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You searched for: Publication Year 2019 Remove constraint Publication Year: 2019 Subject beak Remove constraint Subject: beak
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1. Adaptive management assists reintroduction as higher tides threaten an endangered salt marsh plant

Author:
Gregory B. Noe; Meghan Q.N. Fellows; Lorraine Parsons; Janelle West; John Callaway; Sally Trnka; Mark Wegener; Joy Zedler
Source:
Restoration ecology 2019 v.27 no.4 pp. 750-757
ISSN:
1061-2971
Subject:
Chloropyron maritimum subsp. maritimum; adaptive management; annuals; beak; bees; birds; canopy; case studies; conservation areas; desalination; germination; global warming; grasses; indigenous species; introduced plants; littoral zone; monitoring; parasitism; perennials; pollinators; rain; regression analysis; reproduction; roots; salt marsh plants; salt marshes; temperature; tides; upland soils; California
Abstract:
... In theory, extirpated plant species can be reintroduced and managed to restore sustainable populations. However, few reintroduced plants are known to persist for more than a few years. Our adaptive‐management case study illustrates how we restored the endangered hemiparasitic annual plant, Chloropyron maritimum subsp. maritimum (salt marsh bird's beak), to Sweetwater Marsh, San Diego Bay National ...
DOI:
10.1111/rec.12934

2. Anatomical Descriptions of The Nasal Cavity of The Aquatic and Non-Aquatic Birds

Author:
Fatma Madkour
Source:
SVU- International Journal of Veterinary Sciences 2019 v.2 no.2 pp. 101-110
ISSN:
2535-1877
Subject:
beak; doves; ducks; geese; nasal cavity; quails
Abstract:
... This study attested the anatomical and morphometrical descriptions of the nasal cavity in duck, goose as the aquatic birds and quail, dove as the non-aquatic birds. This study elucidated in the aquatic birds that the nasal cavity remarkable increased in width caudally and had relatively larger nasal conchae and greater of the middle nasal concha than the non-aquatic birds. The nostrils without ope ...
DOI:
10.21608/SVU.2019.14982.1022

3. Beak abnormality hinders provisioning ability and reduces body condition of a female House Wren (Troglodytes aedon)

Author:
Christine J. Hodges; Dylan M. Poorboy; Beth M. Weber; Charles F. Thompson
Source:
Wilson journal of ornithology 2019 v.131 no.1 pp. 128-134
ISSN:
1559-4491
Subject:
Troglodytes aedon; beak; body condition; breeding season; clutch size; females; nestlings; nests; progeny; rearing; wild birds
Abstract:
... Beak abnormalities have been reported in a wide range of species but typically affect only a small portion (<1%) of wild bird populations. Most research has focused on the prevalence, morphology, and causes of beak deformities, resulting in relatively little information on the consequences of these deformities for individual birds. Birds with abnormal beaks likely struggle to feed themselves, a si ...
DOI:
10.1676/18-50
PubMed:
31105481
PubMed Central:
PMC6519477

4. Beak morphology predicts apparent survival of crossbills: due to selective survival or selective dispersal?

Author:
David Gómez‐Blanco; Simone Santoro; Antoni Borrás; Josep Cabrera; Juan Carlos Senar; Pim Edelaar
Source:
Journal of avian biology 2019 v.50 no.12 pp. -
ISSN:
0908-8857
Subject:
Loxia curvirostra; Pinus uncinata; beak; conifers; food intake; forests; immigration; mark-recapture studies; models; mortality; natural selection; Northern European region
Abstract:
... Dozens of morphologically differentiated populations, subspecies and species of crossbills (genus Loxia) exist. It has been suggested that this divergence is due to variation in the conifer cones that each population specialises upon, requiring a specific beak size to efficiently separate the cone scales. If so, apparent survival should depend on beak size. To test this hypothesis, we undertook mu ...
DOI:
10.1111/jav.02107

5. Behavior influences range limits and patterns of coexistence across an elevational gradient in tropical birds

Author:
Benjamin G. Freeman; Joseph A. Tobias; Dolph Schluter
Source:
Ecography 2019 v.42 no.11 pp. 1832-1840
ISSN:
0906-7590
Subject:
aggression; beak; interspecific competition; territoriality; tropical birds; Peru
Abstract:
... Does competition influence patterns of coexistence between closely related taxa? Here we address this question by analyzing patterns of range overlap between related species of birds (‘sister pairs’) co‐occurring on a tropical elevational gradient. We explicitly contrast the behavioral dimension of interspecific competition (interference competition) with similarity in resource acquisition traits ...
DOI:
10.1111/ecog.04606

6. Closed Reduction of a Rostroparasphenopalatal Luxation in a Red-crowned Parakeet (Cyanoramphus novaezelandiae)

Author:
Julie A. Hébert
Source:
Journal of avian medicine and surgery 2019 v.33 no.3 pp. 285-288
ISSN:
1082-6742
Subject:
Cyanoramphus novaezelandiae; beak; parakeets; radiography
Abstract:
... A 1-year-old red-crowned parakeet (Cyanoramphus novaezelandiae) was presented with an acute onset of hyperprotraction of the upper beak and an inability to return the beak to its normal position. With the abnormal beak position, the bird was unable to eat. Standard radiographic images of the head supported a diagnosis of a rostroparasphenopalatal luxation. The luxation was reduced with a 23-gauge ...
DOI:
10.1647/1082-6742-33.3.285

7. Comparison of whole embryonic development in the duck (Anas platyrhynchos) and goose (Anser cygnoides) with the chicken (Gallus gallus)

Author:
Shanshan Li; Shibin Bai; Xia Qin; Junpeng Zhang; David M. Irwin; Shuyi Zhang; Zhe Wang
Source:
Poultry science 2019 v.98 no.8 pp. 3278-3291
ISSN:
0032-5791
Subject:
Anser cygnoides; Gallus gallus; beak; chickens; ducks; embryogenesis; geese; hindlimbs; waterfowl
Abstract:
... Embryos from aquatic birds are the primary models for the study of flipper development. While some staging of early embryogenesis in duck have been studied, characterization of the stages of the entire embryonic development period in water birds has not been described. This study aimed to establish a comparison of complete morphological development staging for ducks (Anas platyrhynchos) and geese ...
DOI:
10.3382/ps/pez133

8. Detection and Molecular Characterization of Two Genotypes of Goose Parvoviruses Isolated from Growing Period Geese and Cherry Valley Ducks in China

Author:
Delong Li; Ludan Zhang; Sihuai Chen; Jiulomg Gu; Mengjian Ding; Jixiang Li
Source:
Avian diseases 2019 v.63 no.3 pp. 411-419
ISSN:
0005-2086
Subject:
Anseriform dependoparvovirus 1; amino acids; beak; dwarfing; genetic variation; industry; mules; pathogens; phylogeny; sequence alignment; terminal repeat sequences; trees; virulence; viruses; waterfowl; China
Abstract:
... Goose parvovirus (GPV) is the etiologic pathogen of Derzsy's disease, causing great economic losses in the waterfowl industry. A novel GPV-related virus (NGPV), which caused short beak and dwarfism syndrome, has occurred in China since 2015. In this study, two GPV strains (RC45 and RC70) were isolated from diseased growing period geese (45 days old and 70 days old), and one NGPV strain GXN45 was i ...
DOI:
10.1637/12015-121818-Reg.1

9. Detection of Avian Bornavirus in Wild and Captive Passeriformes in Brazil

Author:
Natalia A. Philadelpho; Yamê M. Davies; Marta B. Guimarães; Luis F. Nuñez; Claudete S. Astolfi-Ferreira; Silvana H. Santander Parra; Dennis Rubbenstroth; Antonio J. Piantino Ferreira
Source:
Avian diseases 2019 v.63 no.2 pp. 294-297
ISSN:
0005-2086
Subject:
Bornavirus; Serinus canaria; Sicalis flaveola; anorexia; beak; canaries; death; phylogeny; reverse transcriptase polymerase chain reaction; sequence analysis; serotypes; surveys; wild birds; Austria; Brazil; Germany; Hungary
Abstract:
... Avian bornaviruses (ABVs) are the causative agents of proventricular dilatation disease (PDD), a fatal neurologic disease considered to be a major threat to psittacine bird populations. We performed a reverse transcription PCR survey to detect the presence of canary avian bornavirus (CnBV) in birds of order Passeriformes related to different clinical manifestations, such as sudden death, neurologi ...
DOI:
10.1637/11847-041718-Reg.1

10. Differential proteomic analysis to identify proteins associated with beak deformity in chickens

Author:
Yanyan Sun; Nian Liu; Hao Bai; Yunlei Li; Fuguang Xue; Jianhua Ye; Hui Ma; He En; Jilan Chen
Source:
Poultry science 2019 v.98 no.4 pp. 1833-1841
ISSN:
0032-5791
Subject:
Western blotting; abnormal development; beak; biochemical pathways; bone density; calcium; cartilage; cation exchange chromatography; chicken breeds; drinking; gene expression regulation; gene ontology; genes; lipoprotein lipase; peptidylprolyl isomerase; protein synthesis; proteins; proteomics; roosters; tandem mass spectrometry
Abstract:
... The beak is the dominant avian facial feature, and beak deformity occurs in 0.5 to 2.5% of some indigenous chicken breeds, resulting in difficulties when eating, drinking, and performing natural behaviors. Previous studies on beak deformity focused largely on candidate molecules associated with skeletogenic development, providing insight into the molecular and genetic underpinnings of beak deformi ...
DOI:
10.3382/ps/pey519

11. Diversity of phenotypic characteristics of White Tailed-Yellow Chicken populations reared under free range system in Phitsanulok Province, Thailand

Author:
SUPHAWADEE YAEMKONG; TUAN NGUYEN NGOC
Source:
Biodiversitas 2019 v.20 no.5 pp. -
ISSN:
2085-4722
Subject:
beak; body length; body weight; chickens; color; descriptive statistics; males; neck; phenotype; phenotypic variation; plumage; tail; Thailand
Abstract:
... Yaemkong S, Tuan NN. 2019. Diversity of phenotypic characteristics of White Tailed-Yellow Chicken populations reared under free-range system in Phitsanulok Province, Thailand. Biodiversitas 20: 1264-1273. The objective of this study was to evaluate phenotypic diversity of White tail-yellow chickens in Mueang District, Phitsanulok, Thailand. A total of 200 male chickens from the purposive samples w ...
DOI:
10.13057/biodiv/d200517

12. Do beak volume and bite force influence the song structure of sympatric species of seedeaters (Thraupidae: Sporophila)?

Author:
N. S. Porzio; M. Repenning; C. S. Fontana
Source:
Emu 2019 v.119 no.1 pp. 71-78
ISSN:
1448-5540
Subject:
Neotropics; Thraupidae; acoustics; beak; body size; sexual selection; songbirds; sympatry
Abstract:
... Song structure can be constrained by morphological characters such as beak size. Studies have shown that songbirds with larger beaks produce songs with a lower frequency, narrower frequency range and lower note rates than birds with smaller beaks. We tested whether beak volume and bite force constrain song parameters in three Neotropical seedeaters that show a gradient of beak size and force (Spor ...
DOI:
10.1080/01584197.2018.1535833

13. Effect of selenium yeast supplementation on growth performance, feed utilization, lipid profile, liver and intestine histological changes, and economic benefit in meagre, Argyrosomus regius, fingerlings

Author:
Hala Saber Khalil; Abdallah Tageldein Mansour; Ashraf Mohamed Abdelsameé Goda; Eglal Ali Omar
Source:
Aquaculture 2019 v.501 pp. 135-143
ISSN:
0044-8486
Subject:
Argyrosomus regius; absorption; aquariums; beak; blood lipids; cost effectiveness; diet; dose response; economic evaluation; feed conversion; feed intake; feed prices; financial economics; fingerlings; growth performance; histology; intestines; juveniles; kidneys; lipid composition; liver; low density lipoprotein cholesterol; muscles; protein content; selenium; yeasts
Abstract:
... This study was conducted to determine the effects of selenium (Se)-yeast supplementation on the growth, survival, nutrient utilization, plasma lipid profile, economic benefit, and histological alterations of liver and intestine of meagre, Argyrosomus regius, fingerlings (3.20 ± 0.17 g). Four treatments (three replicates each in 100 × 40 × 30 cm aquaria) included a control group (not supplemented w ...
DOI:
10.1016/j.aquaculture.2018.11.018

14. Ethnomedicinal use of vultures by traditional medicinal practitioners in Ghana

Author:
Maxwell K Boakye; Edward D Wiafe; Meyir Y Ziekah
Source:
Ostrich 2019 v.90 no.2 pp. 111-118
ISSN:
1727-947X
Subject:
beak; bones; brain; claws; diabetes; feathers; headache; humans; ingredients; questionnaires; rheumatoid arthritis; therapeutics; traditional medicine; vultures; Ghana
Abstract:
... Vultures form an important ingredient used by traditional medicinal practitioners for the preparation of their therapeutic remedies. The aim of this study was to determine the vulture body parts used for alleviating human ailments by traditional medicinal practitioners in Ghana. Data on the vulture body parts used and human ailments used to alleviate were collected from 28 traditional medicinal pr ...
DOI:
10.2989/00306525.2019.1578834

15. Evolution of Beak Size and Song Constraints in Neotropical Seedeaters (Thraupidae: Sporophila)

Author:
Natália S. Porzio; Márcio Repenning; Carla S. Fontana
Source:
Acta ornithologica 2019 v.53 no.2 pp. 173-180
ISSN:
0001-6454
Subject:
Neotropics; Thraupidae; acoustics; animal communication; beak; birds; body size; models; phylogeny; prediction
Abstract:
... Many traits influence birdsong diversity. Patterns observed in the acoustic parameters can be a result of morphological constraint and can also be explained by phylogenetic relationships. Understanding morphologic mechanisms that can act on song structure might account how they can catalyze speciation and how they evolve in lineages sort. We analyzed the evolution of beak volume and song constrain ...
DOI:
10.3161/00016454AO2018.53.2.007

16. Feather pecking in laying hens housed in free-range or furnished-cage systems on French farms

Author:
J. Coton; M. Guinebretière; V. Guesdon; G. Chiron; C. Mindus; A. Laravoire; G. Pauthier; L. Balaine; M. Descamps; L. Bignon; A. Huneau-Salaün; V. Michel
Source:
British poultry science 2019 v.60 no.6 pp. 617-627
ISSN:
1466-1799
Subject:
animal welfare; beak; beak trimming; cages; cannibalism; farmers; farms; feather pecking; flocks; free range husbandry; genotype; laying hens; lighting; pecking; poultry housing; risk factors; France
Abstract:
... 1. Beak trimming is currently used in France to avoid the negative consequences of severe feather pecking (SFP). However, this practice is controversial in terms of animal welfare, and forbidden in some European countries. 2. This study aimed to assess the prevalence of SFP in French laying hen farms, to describe how farmers manage this behavioural disorder and to better understand the risk factor ...
DOI:
10.1080/00071668.2019.1639137

17. Feed particle selection and nutrient intake altered by pecking stone consumption and beak length in free-range laying hens

Author:
Zafar Iqbal; Kelly Drake; Robert A. Swick; Rider A. Perez-Maldonado; Isabelle Ruhnke
Source:
Animal nutrition 2019 v.5 no.2 pp. 140-147
ISSN:
2405-6383
Subject:
beak; diet; farms; feed intake; feeding behavior; flocks; innervation; laying hens; mash; nutrient intake; nutrients; particle size; pecking; phosphorus; regression analysis
Abstract:
... The present study investigated the effects of pecking stones on feeding behaviour of hens from 16 to 46 weeks of age. Eighteen flocks of Hy-Line Brown hens were housed in 2 commercial free-range housing systems. Farm A housed 10 flocks of beak trimmed (infrared beak treatment) hens in fixed sheds. Farm B housed 8 flocks of hens with intact beaks in mobile sheds. On each farm, flocks were equally a ...
DOI:
10.1016/j.aninu.2018.05.003
PubMed:
31193914
PubMed Central:
PMC6544746

18. First Report of Alternaria alternata Causing Leaf Spot on Digitalis purpurea in Italy

Author:
A. Garibaldi; G. Gilardi; S. Matic; M. L. Gullino
Source:
Plant disease 2019 v.103 no.7 pp. 1770
ISSN:
0191-2917
Subject:
Alternaria alternata; Digitalis purpurea; Scrophulariaceae; beak; conidia; conidiophores; fungal diseases of plants; gardens; genes; genomics; greenhouses; leaf spot; leaves; mycelium; necrosis; pathogenicity; plant pathogenic fungi; ribosomal DNA; spraying; streptomycin; sulfates; summer; temperature; tissues; tubulin; Italy
Abstract:
... Digitalis purpurea (family Scrophulariaceae) is a biennial species used in low maintenance gardens. In summer 2018, extensive leaf necrosis infected 30 to 50% out of 100 D. purpurea plants grown in a private garden near Biella (northern Italy) at temperatures between 18 and 25°C. The initial symptoms appeared as small, light brown, circular spots on the leaves, subsequently expanding to irregular ...
DOI:
10.1094/PDIS-11-18-2110-PDN

19. First Report of Alternaria alternata Causing Leaf Spot on Rumex crispus in Uruguay

Author:
T. E. Kaspary; M. A. García; S. Stewart; G. Casaroto; R. F. Ramos; C. Bellé
Source:
Plant disease 2019 v.103 no.8 pp. 2139
ISSN:
0191-2917
Subject:
Alternaria alternata; DNA; DNA-directed RNA polymerase; Rumex crispus; alternative hosts; beak; conidia; conidiophores; crops; ethanol; fungi; genes; glyceraldehyde-3-phosphate dehydrogenase; grasslands; hyphae; leaf spot; leaves; mycelium; nutrients; nutritive value; pathogenicity; peptide elongation factors; weeds; Uruguay
Abstract:
... Rumex crispus L. (curled dock), a member of the family Polygonaceae, is considered an important weed in grasslands and crops (Hejcman et al. 2012). Curled dock decreases yield and nutritive value of different species by competition for space, water, and nutrients (Zaller 2004). In addition, it may be an alternative host of pests and diseases of crops (Abbasi et al. 2018). In October 2018, R. crisp ...
DOI:
10.1094/PDIS-03-19-0590-PDN

20. First Report of Alternaria alternata Causing Leaf Spot on Spinach (Spinacia oleracea) in Italy

Author:
G. Gilardi; S. Matic; M. L. Gullino; A. Garibaldi
Source:
Plant disease 2019 v.103 no.8 pp. 2133
ISSN:
0191-2917
Subject:
Alternaria alternata; Spinacia oleracea; beak; color; conidia; cultivars; disease severity; foliar diseases; fresh market; genes; genomics; greenhouses; histones; leaf spot; leaves; loci; pathogenicity; piedmont; polygalacturonase; ribosomal DNA; sequence analysis; spinach; spraying; streptomycin; sulfates; tissues; tubulin; China; India; Italy; Poland; Saudi Arabia
Abstract:
... Spinach (Spinacia oleracea L.) is widely cultivated in many countries and is affected by a complex of foliar diseases (Correll et al. 1994). During March 2018, disease symptoms were observed on 15 to 30% of leaves of 90-day-old spinach cultivar Matador plants grown for the fresh market, at a density of 80 to 90 plants/m², in an open field of approximately 0.5 ha in Cuneo province in Piedmont, nort ...
DOI:
10.1094/PDIS-01-19-0086-PDN