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... Ten normal, mature and common quails were used to study in detail the gross anatomy, histochemical and surface ultrastructural characteristics of the nasal cavity. The relationship between the structure and function of the nasal cavity also were assessed. The quail nasal cavity was divided into the vestibule, nasal cavity proper and fundus. The nasal cavity began rostrally by two slit‐like externa ...
autumn; beak; body weight; linear models; microstructure; population structure; squid; South China Sea
Abstract:
... This study aimed to explore the feasibility of using an upper beak microstructure to estimate the age of purpleback flying squid (Sthenoteuthis oualaniensis). From these microstructures, the age and growth of squid caught from January to March and May to August in 2018, 2019, and 2020 in the waters surrounding the Xisha Islands in the South China Sea were determined. We found three typical growth ...
... In some plants and animals, microtubules attach across the length of the chromosome in mitosis, forming a holocentromere instead of a single centromeric locus. A new study in Cell shows that in the holocentric beak sedge Rhynchospora, holocentromeres also impact genomic architecture, epigenome organization, and karyotype evolution. ...
... Intraspecific recurrent selection in V. vinifera is an effective method for breeding of high quality, disease-, cold-, and drought-resistance grapes. Exploring the optimal treatment methods for grape (V. vinifera) seeds can help to accelerate the process of intraspecific recurrent selection and improve breeding efficiency. In this study, seeds of six V. vinifera varieties were used as experimental ...
... Outbreaks of short beak dwarf syndrome caused by novel goose parvovirus (NGPV) have been prevalent in China since 2015, resulting in a high mortality rate of ducks. Herein we evaluated differences between two NGPV strains: Muscovy duck‐origin (AH190917‐RP: MD17) and Cherry Valley duck‐origin (JS191021‐RP: CVD21) NGPV. Both of them showed certain level of pathogenicity to primary duck embryo fibrob ...
... Yeonsan Ogye (OGYE; Gallus gallus domesticus) is a rare indigenous chicken breed that inhabits the Korean Peninsula. This breed has completely black coloring, including plumage, skin, eyes, beak, and internal organs. Despite these unique morphological characteristics, the population of OGYE has declined without in-depth research into their genome research. Therefore, this study aimed to compare th ...
... The red-crowned crane (Grus japonensis) is a critically endangered species. Three-dimensional–printed prosthetic beaks made of titanium alloy and polyether ether ketone (PEEK) were used to repair the beak of a red-crowned crane that had a complete fracture of the anterior maxillary bone and rhinotheca. The physical properties and stability of the prostheses and changes in the crane's behaviors aft ...
... This study compared welfare assessment results in aviary flocks using 3 approaches: 1) A novel Aviary Transect method, 2) AssureWel, and 3) the Norwegian farm advisors’ NorWel method. The Aviary Transect time requirement, interobserver reliability, and within- and across-house sensitivity to detect welfare indicators were also evaluated. The study was conducted on 6 randomly chosen commercial whit ...
... Echidnas are commonly known as ‘spiny ant-eaters’, but long-beaked echidnas (Zaglossus spp.) do not eat ants, whereas short-beaked echidnas (Tachyglossus aculeatus) eat other invertebrates as well as ants. The differences in skull morphology between short- and long-beaked echidnas are related to the differences in their diets, and I tested the hypothesis that there would be differences in beak len ...
Passeriformes; aggression; applied ecology; beak; body size; population density
Abstract:
... Multidimensional approaches examining complex trait-niche relationships are crucial to understand community assembly. This is particularly important across habitat transformation gradients because specialists are progressively substituted by generalists and, despite increasing functional homogenization, in both specialist and generalist communities niche partitioning is apparent. Here, in line wit ...
... Injurious pecking, commonly controlled by beak trimming (BT), is a widespread issue in laying hens associated with thwarted foraging. This controlled study compared the effect in intact and beak-trimmed pullets of providing pecking pans to eight treatment flocks from six weeks of age. Flocks (mean size 6843) comprised eight British Blacktail, six Lohmann Brown and two Bovans Brown. All young birds ...
... The influence of infrared beak trimming at hatch (IRBT) and the inclusion of oat hulls (OH) in the diet on growth performance, feed preference, exploratory pecking behavior, and gastrointestinal tract (GIT) development, was studied in brown-egg pullets from 0 to 15 wk of age. The experimental design was completely randomized with 4 treatments arranged as a 2 × 2 factorial with IRBT (sham vs. treat ...
... In the traditional feeding pattern of geese, the feed trough will be placed on the ground for a long time and hurts the living environment. This research aimed to investigate the effect of 4 different feed trough positioning heights on growth performance, blood parameters, feed loss, water consumption, feeding environment, and behavior of geese and determine the optimal trough positioning height f ...
... The epitypification of the Linnaean name Crepis bursifolia is discussed. An illustration from Boccone's Museo di piante rare della Sicilia, Malta, Corsica, Italia, Piemonte, e Germania was correctly designated as lectotype by Jiménez López & al. in 2013 according to Art. 7.11 of the ICN. However, this image lacks some of the important characters required for a critical identification of the specie ...
... Beaks are among the few hard parts of coleoid cephalopods and are informative for species identification. Although mandible shape has been shown to be adaptive in many vertebrate taxa, it has been suggested that the shape of coleoid beaks does not bear any ecological signal. Yet, previous studies only explored beak shape in 2D and none have provided an in‐depth investigation of the potential relat ...
... We performed a laboratory experiment on caged, domesticated Australian Zebra Finches (Taeniopygia guttata castanotis) to assess the effects of antimicrobial treatment applied to birds' plumage on the feather microbial loads of breeding pairs and their associated reproductive performance. Treatments included an experimental group that experienced frequent misting with a broad-spectrum antimicrobial ...
... Kidney bean (Phaseolus vulgaris L.), also known as common bean, dry bean, or French bean, is one of the most valuable and highly nutritious legume crops cultivated and consumed worldwide (Blair et al. 2012; Choudhary et al. 2018). It is an important edible food and one of the most economically important vegetable crops in China. It is widely grown in Heilongjiang Province in China. In July 2020, l ...
... China is one of the largest markets for pecan (Carya illinoinensis) consumption in the world, and pecan production in China has increased since 2008 (Zhang et al. 2015). From July to September 2019 and 2020, leaf black spot was observed on several pecan cultivars, including Pawnee, Burkett, Kiowa, and Western Schley, in the germplasm in Liuhe County, Nanjing, Jiangsu Province, China. Disease incid ...
... Ophiopogon japonicus (L. f.) Ker-Gawl, a traditional Chinese medicinal plant, is widely cultured in China. The root of O. japonicus is used as the main ingredient in many prescriptions. It is rich in chemical components for steroidal saponins, homoisoflavonoids, and polysaccharides, which have various pharmacological activities, such as cardiovascular protection, anti-inflammation, and antidiabete ...
... Boxelder (Acer negundo) is a tree native to North America. In Europe it is considered a dangerous invasive species, and assigned to the highest (fourth) category of environmental hazard (Tokarska-Guzik et al. 2012). The tree can threaten a wide range of ecosystems and compete with the native flora. Shoot dieback was observed on 20% of boxelder in July 2018 and 2019 in Bryzgiel (N53°59.963′ E23°04. ...
... Orychophragmus violaceus, belonging to the Brassicaceae family, is widely grown in many provinces of China as an ornamental plant and also as a green manure crop. In December 2019, field investigations showed that a leaf spot disease occurred on O. violaceus in three fields with 50 to 80% incidence (50 plants in each field were investigated) in Huize City, Yunnan Province of China. Infected leaves ...
... Fan columbine (Aquilegia flabellata), in the Ranunculaceae family, is used both in mixed borders for gardening and for cut flower production. During spring 2021, 3-month-old potted plants of A. flabellata growing in a glasshouse of the Agroinnova Centre (Grugliasco, Torino province, Northern Italy), showed irregular, brown discolorations spread over a large part of the leaf surface and petioles an ...
Miocene epoch; Mucuna; basins; beak; biogeography; center of diversity; fossils; paleobotany; palynology; phylogeny; tropics; Vietnam
Abstract:
... The genus Mucuna Adans. (Papilionoideae, Fabaceae) contains approximately 105 extant species. It is widely distributed in pantropical areas, with its center of diversity located in Asia. Recent molecular phylogenetic analyses investigated the historical biogeography of the genus; however, a lack of fossil evidence has limited a fuller understanding of the genus. Here, we present the first macrofos ...
Sonia Kleindorfer; Diane Colombelli‐Négrel; Lauren K. Common; Jody A. O'Connor; Katharina J. Peters; Andrew C. Katsis; Rachael Y. Dudaniec; Frank J. Sulloway; Nicolas M. Adreani
Geospiza; abnormal development; adulthood; adults; bark; beak; blood; body condition; insectivores; instars; keratin; leaves; nose; parasitism; phenotype; trees
Abstract:
... The avian beak is a key morphological trait used for foraging. If parasites alter beak shape, we may expect changes in host foraging behaviour. Larvae of the avian vampire fly Philornis downsi cause naris enlargement in Darwin's finch nestlings when first and second instar larvae consume keratin, blood and tissue from inside the beak of the developing host. This naris malformation persists into ad ...
... Beak color diversity is a broadly occurring phenomenon in birds. Here, we used ducks to identify candidate genes for yellow, black, and spotted beaks. For this, an F₂ population consisting of 275 ducks was genotyped using whole genome resequencing containing 12.6 M single-nucleotide polymorphisms (SNPs) and three beak colors. Genome-wide association studies (GWAS) was used to identify the candidat ...
... Understanding the biogeographical patterns, and evolutionary and environmental drivers, underpinning morphological diversity are key for determining its origins and conservation. Using a comprehensive set of continuous morphological traits extracted from museum collections of 8353 bird species, including geometric morphometric beak shape data, we find that avian morphological diversity is unevenly ...
... The present study aims to investigate the gross morphological structure of the tongue of the khaki Campbell duck at different postnatal ages. The ducks were from four age groups (A total of 25 ducks): day one (1), one (1) month, two (2) months, three (3) months, and four (4) months, having five ducks in each group. The tongues were collected immediately after the ethical killing of the birds for g ...
... Duck short beak and dwarfism syndrome (SBDS) is a viral infectious disease caused by novel goose parvovirus (NGPV), which has been responsible for serious economic losses to the Chinese duck industry in recent years. Currently, there is no effective vaccine against this disease. In this study, we developed an inactivated virus vaccine candidate for SBDS based on NGPV strain DS15 isolated from a du ...
... Darwin's finches, with the primary diversity in the shape and size of their beaks, represent an excellent model system to study speciation and adaptive evolution. It is generally held that evolution depends on the natural selection of heritable phenotypic variations originating from the genetic mutations. However, it is now increasingly evident that epigenetic transgenerational inheritance of phen ...
... Scopulariopsis brevicaulis, a soil saprophyte, is the most common dermatomycotic mould and causes deep fungal infection. Ten canaries died in a flock of 200 and, at necropsy, S. brevicaulis was isolated from lung and beak samples. Macroscopically, the colonies were flat, velvety or powdery, white, tan, dark brown, grey or black. Microscopically, the isolated fungus had hyaline and septate hyphae, ...
... Tussilago farfara is of vital medical value. A new leaf spot disease was observed on T. farfara leaves, in Dingxi, Gansu Province, China, in October 2019. In order to research the pathogen, the diseased samples were collected for isolation and identification. The isolate KD3 was verified by pathogenicity test, as the pathogen causing the T. farfara leaf spot disease. Its morphological characterist ...
... In many songbird species, young birds learn their song from adult conspecifics. Like much animal communication, birdsong is multimodal: singing is accompanied by beak and body movements. We hypothesized that these visual cues could enhance vocal learning thus partly explaining the reduced learning from unimodal audio playbacks compared to multimodal live social tutoring observed in many birdsong s ...
Mariana Díaz-Santana-Iturrios; Viridiana Zepeda-Benitez; Renata Pacheco-Ovando; Claudio F. Cornejo; José Miguel Cerda; César Augusto Salinas-Zavala; Jasmín Granados-Amores
... Cephalopods have upper and lower chitinous beaks, and their shape can be used to identify species. However, the morphological attributes of beaks are commonly obtained from sources that contain little information on shape, compromising the determination of taxa. Thus, in this study, we used geometric morphometrics to analyze inter-specific differences in beak shape of six octopus species from the ...
Pedro G. Blendinger; Tobias N. Rojas; Andrés F. Ramírez‐Mejía; Irene M. A. Bender; Silvia Lomáscolo; Julieta Magro; M. Gabriela Núñez Montellano; Román A. Ruggera; Mariana Valoy; Mariano Ordano
beak; birds; ecology; energy intake; food handling; food intake; fruits; geometry; models; nutrient balance; nutrient content; Andes region
Abstract:
... According to diet‐regulation hypotheses, animals select food to regulate the intake of macronutrients or maximise energy feeding efficiency. Specifically, the nutrient balance model proposes that foraging is primarily a process of balancing multiple nutrients to achieve a nutritional intake target, while the energy maximisation model proposes that foraging aims to maximise energy. Here, we evaluat ...
... Panax japonicus C. A. Mey., known as Japanese ginseng or “Zhujieshen” in China, is a perennial medicinal herb (family Araliaceae) native to China and is widely grown in many provinces including Hubei, Hunan, and Sichuan. In recent years, cultivation of Japanese ginseng has increased tremendously in China because of its high value. Its root is widely used in traditional Chinese medicine for the tre ...
... Beak and feather disease virus (BFDV) infects domestic and wild psittacine species and is able to cause progressive beak, claw and feather malformation and necrosis. In addition to having an impact on the health and welfare of domesticated birds, BFDV represents a significant threat to wild endangered species. Understanding the epidemiology, dynamics, viral migration rate, interaction between wild ...
... Early blight (EB) is a destructive disease affecting potato and tomato plants in Russia, caused by a heterogeneous group of plant pathogenic Alternaria fungi. The current species delimitation in Alternaria sect. Porri with medium to large conidia and a long (filamentous) beak is based on molecular data. In this study, the ITS, GAPDH, RPB2, TEF1, and Alt a 1 gene regions were analyzed in 41 large-s ...
... 1. Within a triennial project, 34 layer flocks with untrimmed beaks were examined regularly throughout the laying period to broaden knowledge on the occurrence and development of severe feather pecking and cannibalism, as well as on factors influencing this non-desirable behaviour. 2. Flocks involved 850 to 27,183 hens of seven different genetics, kept in a barn or on free-range systems. Damage to ...
Wei-Cheng Li; Jian Huang; Lin-Lin Chen; Robert A. Spicer; Shu-Feng Li; Jia Liu; Yi Gao; Fei-Xiang Wu; Alex Farnsworth; Paul J. Valdes; Zhe-Kun Zhou; Tao Su
... Podocarpium is an extinct genus in Fabaceae with rich fossil records in Eurasia dating back to the Eocene. However, the diversification and biogeographic histories of Podocarpium are poorly known due to a lack of fossils in some key regions, such as the Tibetan Plateau, an area recently shown to be crucial for floristic exchanges worldwide in the geological past. Here, we describe well-preserved f ...
... The welfare of laying hens in cage systems is of increasing concern. Represented by the European Union’s ‘End the Cage Age’ initiative, more and more countries have advocated cage-free farming. China, an important country for poultry farming and consumption in the world, is highly dependent on cage systems and lacks confidence in alternative (e.g., free-range) systems. In this context, using China ...
... The present study was conducted with an objective to assess the prevalence and incidence of tomato early blight disease at different locations in five districts of Tamilnadu, India during 2016. The growth characters and pathogenic variability among the isolates of Alternaria solani were recorded. The survey revealed that the per cent disease index ranged from 12.52 to 34.72 per cent among five tom ...
... Several countries and regions have regulations in place to provide standards for the welfare of production animals, which have implications for breeding, management and trade. In the chicken egg production industry, the welfare impacts of this are not well understood. In the past decades, free-range systems were widely used for local chicken breeds in poultry industry in China, but their use has g ...
beak; body weight; broiler breeders; cannibalism; decline; mortality; research
Abstract:
... There is pressure to ban the practice of using beak treatment in laying hens and with this comes the need to find viable alternatives. Natural beak blunting by the inclusion of abrasive materials in the feeder has been suggested as an alternative, but its applicability to leghorn pullets and laying hens is not fully understood. This study investigated if a specialized feeding system that has been ...
... This report describes the use of synthetic acrylic resin prostheses in five birds with rhinothecal fracture. Satisfactory biomechanical and clinical results were obtained in all cases, enabling early return to function of the beak. The patients, a roadside hawk (Rupornis magnirostris; case 1), a cockatiel (Nymphicus hollandicus; case 2), two turquoise-fronted parrots (Amazona aestiva; cases 3 and ...
Anseriform dependoparvovirus 1; agglutination; beak; ducklings; dwarfing; fluorescent antibody technique; latex; neutralization; polyacrylamide gel electrophoresis; progeny; protein synthesis; transmission electron microscopy; vaccines; viruses
Abstract:
... Duckling short beak and dwarfism syndrome virus (SBDSV), an emerging goose parvovirus, has caused short beak and dwarfism syndrome (SBDS) in Chinese duck flocks since 2015. Presently, there is no commercial vaccine against SBDS. In the present study, a virus‐like particle (VLP)‐based candidate vaccine was developed against this disease. A baculovirus expression system was used to express the SBDSV ...
... Members of the genus Circovirus with the family Circoviridae are responsible for fatal diseases that can affect mammals and birds. Beak and feather disease virus (BFDV) is responsible for fatal diseases that could affect birds, causing the psittacine beak and feather disease. The current study discovered a new Circovirus from feces of laboratory rabbits and name it RabCV, which shows close relatio ...
... Episodic pulses in morphological diversification are a prominent feature of evolutionary history, driven by factors that remain widely disputed. Resolving this question has proved challenging because comprehensive species‐level data are generally unavailable at sufficient scale. Combining global phylogenetic and morphological data for birds, we show that pulses of diversification in lineages and t ...
... This study aimed to determine the effects of infrared beak treatment on the behavior and welfare of male and female turkeys reared to 12 wk of age. To do this, poults (236 males and 324 females) were assigned to one of 2 beak treatments: infrared beak treated on day of hatch (IR) or sham untreated control (C). Data collected included heterophil/lymphocyte (H/L) ratio, pecking force, feather cover, ...
... Controlling injurious pecking in commercial turkeys remains a significant challenge to producers and the industry. Infrared beak treatment is an effective method of controlling injurious pecking in chickens; however, the effects of infrared beak treatment on turkey performance are still largely unknown. Two experiments were conducted to determine the impact of infrared beak treatment on the beak l ...
beak; birds; data collection; meta-analysis; species richness; temperate zones
Abstract:
... Where is evolution fastest? The biotic interactions hypothesis proposes that greater species richness creates more ecological opportunity, driving faster evolution at low latitudes, whereas the ‘empty niches’ hypothesis proposes that ecological opportunity is greater where diversity is low, spurring faster evolution at high latitudes. We tested these contrasting predictions by analysing rates of b ...
... Modern commercial layer breeds represent the culmination of ~7000 years of natural genetic selection. This selection was driven in former times by a combination of genetic-shift and -drift events, that led to chickens being favoured as domesticated species for meat and egg production. More recently, in the early 20th century, the concept of hybrid vigour was discovered and accelerated the natural ...
... Derzsy’s disease and Muscovy duck parvovirus disease have become common diseases in waterfowl culture in the world and their potential to cause harm has risen. The causative agents are goose parvovirus (GPV) and Muscovy duck parvovirus (MDPV), which can provoke similar clinical symptoms and high mortality and morbidity rates. In recent years, duck short beak and dwarfism syndrome has been prevalen ...
... Amygdalus triloba (Rosaceae; previously Prunus triloba) is a deciduous, flowering shrub that is widely used in the greening and beautification of lawns, parks, and courtyards in China. In late May 2019, a leaf spot disease of A. triloba was observed on approximately 35% of plants in the Xinjiang Alaer city (40°33′20′′N, 81°17′19′′E). The disease symptoms began as small, suborbicular, brown spots o ...
... Psittacine beak and feather disease (PBFD), caused by beak and feather disease virus (BFDV) is a highly contagious disease in wild and captive psittacine populations and has an almost global presence. However, the BFDV infection in Saudi Arabia remains largely unknown. In the present study, we report the full genome sequence of BFDV strains from Saudi Arabia and its genetic diversity. The complete ...
... Spontaneous droplet transport without mass loss has great potential applications in the fields of energy and biotechnology, but it remains challenging due to the difficulty in obtaining a sufficient driving force for the transport while suppressing droplet mass loss. Learning from the slippery peristome of Nepenthes alata and wedge topology of a shorebird beak that can spontaneously feed water aga ...
... Despite the intensive genetic selection in modern poultry, variability of domestic fowl phenotypes has remained, especially in breeds adapted to local conditions. The relevance of this variability to the chicken outdoor ranging activities remains unknown. The aim of this study was to investigate if external features were associated with the ranging frequency of the 48 female chickens from each of ...
... Keratoacanthoma is a common cutaneous neoplasia in humans that most often occurs on sun exposed sites and is considered a rapidly growing pseudomalignancy, resembling squamous cell carcinoma.Beak keratoacanthomas were diagnosed in two birds from two different households: in a 10-year-old male and in a 1-year-old male budgerigar (Melopsittacus undulatus). The main clinical findings in both birds we ...
... The effect of fruit removal and passage through the digestive tract of frugivorous birds on seed germination has been mostly studied in species that swallow the whole fruit without mandibulating (“gulpers”), and defecate or regurgitate seeds without pulp away from the maternal plant. Functional groups with other fruit-handling methods, while often quantitatively important in removing fruits, are p ...
Candida krusei; Passer domesticus; adults; beak; body condition; body weight; fungi; hemoglobin; juveniles; mycoses; rural areas; tail; urban population
Abstract:
... Mycoses of wild birds are rarely addressed in scientific research. We tested the hypothesis that urban populations of House Sparrow Passer domesticus, which in many cities showed downward trends in their number and are characterized by lower body mass and poorer body condition, would be more frequently colonized by fungi. To evaluate the degree of bird colonization by fungi, swabs were taken from ...
... Hornbills (Bucorvidae and Bucerotidae) are among the most recognizable groups of birds. Their large, curved beak topped by a casque is their most obvious feature. Here, we describe the earliest fossil of a hornbill, and more precisely a Bucerotidae, from the early Miocene of Napak, Uganda. This fossil is a proximal part of a maxilla that can be tentatively assigned to the genus Tockus and which at ...
... Understanding of ecosystem structure and functioning requires detailed knowledge about plant–animal interactions, especially when keystone species are involved. The recent consideration of parrots as legitimate seed dispersers has widened the range of mechanisms influencing the life cycle of many plant species. We examined the interactions between the burrowing parrot Cyanoliseus patagonus and two ...
Ceropegia; beak; corolla; gypsum; lakes; new species; Ethiopia; Kenya
Abstract:
... The new species Ceropegia longirostris Thulin, M.G.Gilbert & Kaariye is described, illustrated and mapped. It is known from two localities, one on gypsum in the Somali National Regional State (Ogaden) in southeastern Ethiopia and one, based on a photographic record, from just east of Lake Turkana in northwestern Kenya. The new species is a member of C. sect. Phalaena H.Huber, and is distinctive by ...
... The loss of agrobiodiversity is a topic of global impact. On a local scale, Lombardy, in the Alpine macro-Region, has lost more than 78% of its plant agrobiodiversity. Only four maize (Zea mays L. subsp. mays) landraces of Lombardy are registered in the European Register of Conservation Varieties. However, there are other maize landraces in Lombardy such as “Mais delle Fiorine”, which was characte ...
algorithms; animal health; beak; body length; body weight; chest; decision support systems; prediction; regression analysis; silver; South Africa
Abstract:
... In animal breeding, more considerable attention is drawn to reveal the relationship between live body weight and morphological traits in identifying breed and species standards. The aim of this study was to predict live body weight from morphological characteristics in the Hy-line silver brown commercial layer and indigenous Potchefstroom Koekoek breed, native to South African. In the prediction o ...
Euplectes; beak; birds; cognition; nests; problem solving
Abstract:
... Few avian species use tools in the wild. Yet, several birds build nests of great complexity and many aspects of tool use may also apply to nest building. It has long been hypothesised that tool use may select for specialised cognitive adaptations or even general cognitive skills. This might similarly pertain to species that build complex nests. In this study, we investigated the problem-solving ca ...
... Determination of the chick embryonic developmental period at which embryonic mortalities occur could help in establishing the cause of such mortalities. The late stage of embryonic development has particular importance due to its dramatic effect on life after hatching. This study was conducted to investigate the occurrence, frequency and bacterial isolates from dead-in-shell chick embryos in North ...
... We report a severe case of rhinothecal cryptococcoma in a 13-year-old female African Grey Parrot (Psittacus erithacus). The bird was born and bred in captivity in Portugal. The beak was deformed and showed several round soft masses, and microscopic examination revealed the presence of cells suggestive for Cryptococcus. Phenotypic and molecular analyses identified the obtained yeast culture as C. b ...
... Beak trimming is used in the egg industry to prevent mortality from cannibalism and minimise injurious pecking, vent pecking, aggressive pecking at the head and all forms of feather pecking, although the practice does not completely reduce the damage. There are alternatives to beak trimming, but they have not been reliable in preventing injurious pecking. However, beak trimming should not be used ...
... Botryomycosis is a chronic bacterial infection of the skin and viscera caused by nonbranching bacteria such as Staphylococcus spp. It results in the formation of chronic, suppurative and often granulomatous lesions that may resemble multiple abscesses. It has been diagnosed worldwide in both humans and animals. It is a rare disease, usually requiring surgical excision combined with long‐term antib ...
White Leghorn; beak; geometry; morphometry; phenotypic variation
Abstract:
... Beak treatment is an effective method of reducing the damage inflicted by severe feather pecking (SFP) but there is significant pressure to eliminate these treatments and rely solely on alternative strategies. Substantial variation in beak shape exists within non-beak treated layer flocks and beak shape appears to be heritable. There is the potential to use this pre-existing variation and genetica ...
Antonio González Ariza; Ander Arando Arbulu; José Manuel León Jurado; Francisco Javier Navas González; Juan Vicente Delgado Bermejo; María Esperanza Camacho Vallejo
... This study aimed to develop a tool to perform the morphological characterization of Sureña and Utrerana breeds, two endangered autochthonous breeds ascribed to the Mediterranean trunk of Spanish autochthonous hens and their varieties (n = 608; 473 females and 135 males). Kruskal–Wallis H test reported sex dimorphism pieces of evidence (p < 0.05 at least). Multicollinearity analysis reported (varia ...
... Duck circovirus (DuCV) is widespread across the world and causes feather disorders in young ducks. It was identified as the causative pathogen of duck beak atrophy and dwarfism syndrome and primary sclerosing cholangitis. In this study, we aimed to establish a TaqMan-based real-time PCR assay to detect DuCV. The primers and probe were designed based on the conserved region of the DuCV Rep gene. Af ...
Emberiza schoeniclus; beak; carbon; demographic statistics; ecological differentiation; habitat preferences; habitats; lakes; ornithology; population structure; stable isotopes; wetlands; winter; Austria
Abstract:
... Migrating species and populations are affected by conditions existing across large geographical scales. The degree to which populations mix at stop-over sites and wintering grounds is variable and can involve important fitness consequences. Thus, the link between breeding and wintering grounds and seasonal shifts in population structure are important to understand population demographics, local ad ...
... Animals have encountered novel foods at points throughout history, due to factors such as range expansions and niche shifts driven by competition. One of the first challenges presented by novel foods is how to eat them. Mouthpart morphology is thus critical during the process of host shifts. Developmental plasticity in mouthparts is one potential mechanism that may allow animals to tolerate new fo ...
Beak and feather disease virus; Psittaciformes; beak; biodiversity; disease surveillance; genome; haplotypes; monitoring; parakeets; parrots; phylogeny; single-stranded DNA; time series analysis; Mauritius
Abstract:
... Emerging infectious diseases (EIDs) are key contributors to the current global biodiversity crisis. Psittaciformes (parrots) are one of the most vulnerable avian taxa and psittacine beak and feather disease (PBFD) is the most common viral disease in wild parrots. PBFD is caused by the beak and feather disease virus (BFDV), which belongs to the Circoviridae family and comprises a circular, single-s ...
... The aim of the experiment was to investigate the use and effect of a new beak-abrasive material not yet examined on mortality of non-beak trimmed laying hens of different genotypes housed in an alternative pen. The study was performed on 636 females belonging to three genotypes of Bábolna TETRA Ltd. (a1 = commercial brown layer hybrid (C); a2 = purebred male line offspring group (maternal); a3 = p ...
... Severe feather pecking (SFP) is a major animal welfare problem in layers. It results in pain and injuries in the affected animal. It was the aim of this study to gain insight into the actual pecking behavior of laying hens kept on commercial farms with flock sizes common in practice. We observed aggressive pecking and SFP in non-beak-trimmed and beak-trimmed flocks of laying hens and investigated ...
... Fig (Ficus carica L.) is among the earliest and widely cultivated fruit trees in the world due to its easy adaptation to diverse climates (Solomon et al. 2006). In July 2020, a rot disease was observed on multiple orchards located in Faisalabad, a region of Punjab Province. The symptoms appeared as light brown, circular to oval, and water-soaked lesions (4 to 8 mm in diameter). In more advanced st ...
... Little millet (LM) is a minor cereal crop grown in the Indian subcontinent. During October 2018, dark brown, circular to oval necrotic spots surrounded by concentric rings were observed on the upper leaf surface of the LM (cv. VS-13) grown in the fields of the University of Agricultural Sciences, Bengaluru, India (13.0784°N, 77.5793°E). As the disease progressed, infected leaves became blighted. D ...
... Oat (Avena sativa L.) is an important cereal crop grown worldwide primarily for food and animal feed. In November 2019, a leaf spot disease was observed on the oat plants at Mandya (12.5218° N, 76.8951° E), Karnataka, India. The disease incidence on plants was ranged between 43 and 57%. Initially, the symptoms appeared on leaves as small dark-brown spots surrounded by a yellow halo and later turne ...
... Sweet viburnum (Viburnum odoratissimum [L.] Ker Gawl) is an evergreen shrub mainly cultivated along roadsides in urban landscapes and in parks and residential areas. A foliar disease occurred on ∼40% of sweet viburnum plants near Anhui Grand Theater, Anhui Province, China, in June 2019. Early symptoms appeared as small brown spots 2 to 3 mm in length on the leaves. Spots developed on the upper, mi ...
... Sugarcane (Saccharum officinarum L.) is the main sugar crop in China. Yunnan is the second largest sugarcane production province in China. In December 2018, leaf blight was first observed on almost every leaf of sugarcane ‘Huanan 54-11’, ‘Baimei’, and ‘Chongan’ in Kaiyuan (103.27° E, 23.72° N), Yunnan. In October 2019, during our survey in the field in Lingcang (100.08° E, 23.88° N), Yunnan, this ...
... Sonchus asper (spiny sowthistle), belonging to the Asteraceae, is a problematic weed in grain crops, orchards, and turf (Cho et al. 2019). In April 2016, about 90% of the S. asper plants infesting a pear orchard had symptoms with black spots densely distributed on the leaves and stems in Da Yang Town, Luyang District, Hefei, Anhui (N 31°55′43″, E 117°11′40″). The foliar lesions were mostly circula ...
... Oat (Avena sativa) is an annual gramineous crop, which contains a source of soluble dietary fiber, β-glucan, unsaturated fatty acids, vitamins, minerals, phenolic acids, and avenanthramides. It widely cultivated in cool and semiarid areas in northern China (Li et al. 2017). In July 2018, a severe leaf spot infection was observed in the Forage Germplasm Nursery (31°17′22″N, 103°40′15″E, 2,885 m ele ...
... Farfugium japonicum (L.) Kitam (with the common name leopard plant) is known as a garden and medicinal herb, and it belongs to the family Asteraceae. In May 2019, a leaf spot disease was observed on the upper leaf surface of F. japonicum in Changsha city, Hunan province, China. More than 98% of the F. japonicum plants were infected in a garden of Donghu district (28°13′ N; 112°56′ E). Leaf symptom ...
... Dandelion (Taraxacum mongolicum) is a perennial herb of the family Asteraceae with a high edible and medicinal value, and it is widely grown at medium and low altitudes in China. In July 2019, purple spot of dandelion was found in a field near Harbin City, Heilongjiang province, China. The disease incidence regionally reached 95% in fields with yield losses between 10 and 20%, seriously reducing t ...
... Nowadays, microstructural and ultrastructural analysis of organs of the avian beak cavity points to new aspects of adaptation to food intake through the various feeding groups. These data should undoubtedly be considered in the time of mass production of compound feed in poultry, when many studies analyze the optimal size of food particles and their doses. Galliformes possess complex mechanisms of ...
beak; color; cultivars; fruit quality; fruit weight; genetic analysis; heritability; mangoes; mesocarp; statistical models; texture
Abstract:
... A key strategy to improve fruit quality and consumer appeal in mangoes is to breed trait improvements into new cultivars. There are several key fruit quality traits in mango. Knowledge of the heritability and relationship among these traits is important for breeding success. This paper implements a linear mixed model analysis including paternal information for analysis of 13 important fruit qualit ...
... Recently, a novel duck-origin goose parvovirus (N-GPV) was reported to cause short beak and dwarfism syndrome in ducks. In this study, we performed complete genome sequencing and analyzed three different duck-derived parvoviruses that infected different breeds of ducks. Phylogenetic trees based on gene sequences indicated that they were classical goose parvovirus (C-GPV), Muscovy duck parvovirus ( ...
... The harvesting of Onion Grass (Romulea rosea) corms by flocks of Sulphur‐crested Cockatoo (Cacatua galerita) is well known. Individual birds and large flocks feed on the weed in pastures, grasslands and recreational turf. Flocks of Sulphur‐crested Cockatoo were observed feeding on Onion Grass at seven sites along the Maribyrnong River at Keilor, Victoria. Flock size and feeding habits were noted, ...
Hannah Joy Kriesell; Thierry Aubin; Víctor Planas-Bielsa; Quentin Schull; Francesco Bonadonna; Clément Cornec; Yvon Le Maho; Laura Troudet; Céline Le Bohec
Aptenodytes patagonicus; acoustics; adults; beak; color; courtship; ears; energy; life history; physiological state; plumage; reproductive success; sexual maturity; sexual selection
Abstract:
... Reproductive success can improve with experience, which increases with age in many long-lived species. Signals that provide reliable information about age are therefore of importance for mate choice and consequently are under sexual selection. In birds, these are often vocal signals as well as visual signals in the form of plumage coloration. King penguins, Aptenodytes patagonicus, are sexually mo ...
... Hydroxyapatite (HAp) powder was produced from chicken (femur and beak) and fishbone wastes and used as a green adsorbent to decrease Cd²⁺ from aqueous media. The HAp powder was generated at 900 °C and characterized using physicochemical techniques. Chicken femur’ HAp (16.72 m²/g) had a higher surface compared to chicken beak and fishbone ones. The solution pH was the most important parameter in re ...
Anelloviridae; Gulo gulo; Porcine circovirus; Porcine circovirus-3; beak; circular DNA; dead animals; evolution; forests; genome; infection; mammals; prey species; single-stranded DNA; Montana; Northern European region
Abstract:
... Viruses in the families Circoviridae and Anelloviridae have circular single-stranded DNA genomes and have been identified in various animal species. Some members of the Circoviridae family such as beak and feather disease and porcine circovirus have been found to cause disease in their host animals. Anelloviruses on the other hand have not been identified to cause disease in their hosts but are hi ...
... Stress and lameness negatively affect the health, production, and welfare of broilers. Bacterial chondronecrosis with osteomyelitis (BCO) is a leading cause of stress and lameness in commercial broilers. External changes in skin temperature related to changes in blood flow can be detected with infrared thermography (IRT), offering a noninvasive tool to assess the health of animals. This study comp ...
... The effects of an injectable anesthesia with 0.05 mg/kg medetomidine, 5 mg/kg ketamine, and 0.5 mg/kg butorphanol administered together intramuscularly were evaluated in 22 captive Humboldt penguins (Spheniscus humboldti, 10 male and 12 female), with a mean age of 8.5 ± 8.23 years. The birds fasted for18–24 hours prior to the procedure. Induction was followed by 4 distinct progressive responses of ...
... A fundamental aspect of evolutionary biology is natural selection on trait variation. Classically, selection has been estimated primarily on external morphological traits such as beak size and coloration, or on easily assayable physiological traits such as heat‐tolerance. As technologies and methods improved, evolutionary biologists began examining selection on molecular traits such as protein seq ...
El Nino; La Nina; Ommastrephes bartramii; beak; body size; climate; climate change; geometry; maturity stage; morphometry; phenotypic plasticity; squid; Pacific Ocean
Abstract:
... Oceanic squids are typical species that sensitive to the environment change. Previous studies on oceanic squids mainly focus on its annually fluctuated abundance under the background of climate change. The changes of individual morphological sizes, including body and beak, have been observed in recent years. In this study, Ommastrephes bartramii, an important cephalopod species in North Pacific Oc ...
... Hybridization increases genetic variation, hence hybrid species may have greater evolutionary potential once their admixed genomes have stabilized and incompatibilities have been purged. Yet, little is known about how such hybrid lineages evolve at the genomic level following their formation, in particular their adaptive potential. Here we investigate how the Italian sparrow (Passer italiae), a ho ...
... Birds use song for several goals as defending territory, alerting a partner to the presence of a predator, or wooing a female for breeding. This study aims to identify the morphometric parameters which determine the variability of the number of syllables in the “sexy” songs of yellow-fronted canary. For this purpose, sixteen morphometric parameters were measured among 170 yellow-fronted canaries c ...
... A novel duck picornavirus, designated as duck/AH15/CHN/2015, was isolated and identified from Cherry Valley ducks with short beak and dwarfism syndrome in 2015 in Anhui province of China. Duck/AH15/CHN/2015 has the highest degree of amino acid sequence identity (approximately 43 %) with duck hepatitis A viruses (DHAV) Complete genome analysis revealed that duck/AH15/CHN/2015 possesses a typical pi ...