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... To explore the environmental adaptation strategies of high-altitude breeding birds to alpine regions, we studied the breeding ecology of the Snow Partridge (Lerwa lerwa) in the Qinghai-Tibet Plateau. Incubation behavior was determined using data loggers in Basu County (2018) and Cuona County (2019), in the Tibet Autonomous Region, China. We monitored seven Snow Partridge nests; clutch sizes ranged ...
eggmasses, etc ; Eupelmus; Mantidae; Monodontomerus obscurus; fauna; parasitism; parasitoids; Iran; Show all 8 Subjects
Abstract:
... In total 23 oothecae of seven species of mantids from six genera Bolivaria Stål, 1877 (Rivetinidae), Elaea Stål, 1877 (Gonypetidae), Empusa Illiger, 1798 (Empusidae), Hierodula Burmeister, 1838 (Mantidae), Holaptilon Beier, 1964 (Gonypetidae), Iris Saussure, 1869 (Eremiaphilidae) were collected. About 69% of collected oothecae of mantids were parasitized by the Hymenoptera families, Torymidae and ...
eggmasses, etc ; Trichoptera; adults; animal ecology; climate; insects; instars; larvae; streams; Show all 9 Subjects
Abstract:
... In organisms with complex life cycles, the various stages occupy different habitats creating demographically open populations. The dynamics of these populations will depend on the occurrence and timing of stochastic influences relative to demographic density dependence, but understanding of these fundamentals, especially in the face of climate warming, has been hampered by the difficulty of empiri ...
eggmasses, etc ; Haemaphysalis; acarology; adults; egg incubation; eggs; females; livestock; ticks; wildlife; South Asia; Show all 11 Subjects
Abstract:
... Haemaphysalis (Kaiseriana) bispinosa is one of the widest–spread tick species in Southern Asia vectoring pathogens to wildlife and livestock animals. Understanding biological parameters of this species is of great importance, particularly when setting control plans or for epidemiological studies under laboratory conditions. The aim of this study was to figure out the biological aspects of H. (K.) ...
eggmasses, etc ; Physella acuta; antidepressants; aquatic animals; environment; fluoxetine; freshwater; morphometry; reproductive performance; snails; Show all 10 Subjects
Abstract:
... Contamination of the environment by pharmaceutical pollutants poses an increasingly critical threat to aquatic ecosystems around the world. This is particularly true of psychoactive compounds, such as antidepressant drugs, which have become ubiquitous contaminants and have been demonstrated to modify aquatic animal behaviours at very low concentrations (i.e. ng/L). Despite raising risks to the hyd ...
eggmasses, etc ; Halyomorpha halys; Trissolcus; biological control; eggs; fruits; mortality; multiparasitism; parasitoids; sympatry; East Asia; Italy; Show all 12 Subjects
Abstract:
... The egg parasitoids Trissolcus japonicus (Ashmead) and Trissolcus mitsukurii (Ashmead) (Hymenoptera: Scelionidae) are the most effective biocontrol agents of the invasive agricultural pest Halyomorpha halys (Stål) (Heteroptera: Pentatomidae) in its native range (east Asia). Trissolcus japonicus and T. mitsukurii are sympatric in the native areas. In northern Italy, where H. halys is a major pest o ...
eggmasses, etc ; Careproctus; courtship; females; fins; males; marine fish; reproductive behavior; solar radiation; spermatozoa; Pacific Ocean; Show all 11 Subjects
Abstract:
... The reproductive biology of deep-sea fishes is largely unknown because of the difficulty of behavioral observations in this environment. In this study, the reproductive behavior of the deep-sea snailfish, Careproctus pellucidus, which lives at depths > 200 m, was observed in an aquarium. Fishes were collected at a depth of approximately 300 m in the North Pacific Ocean (36°70′N; 141°00′E) in July ...
... The Diamondback Squid Thysanoteuthis rhombus is a globally distributed deep-sea species, one of only a few oegopsid nektonic cephalopods in which planktonic egg masses are well known. Here, we report three new T. rhombus egg masses found in the Bay Islands, Honduras, in 2020. Using the egg trace method, these egg masses provide one of the first indications that T. rhombus adults occur and spawn, a ...
eggmasses, etc ; Dendrolimus pini; Pinus sylvestris; adults; body size; fecundity; females; larvae; pests; phenotype; progeny; pupae; Show all 12 Subjects
Abstract:
... The pine‐tree lappet moth, Dendrolimus pini (L.) (Lepidoptera: Lasiocampidae), is a pest whose natural range mostly follows that of its host, Scots pine, Pinus sylvestris L. (Pinaceae). Under natural conditions, we observed differences in larval body size, pointing to different rates of their growth and development. This study aimed to check whether differences in egg mass can differentiate the gr ...
... With the first detection of incidence of S. frugiperda on maize under field conditions, the rearing and studying of life cycle has been started. Under Manipur conditions, the adult male and female have a longevity of 32 - 40 and 29 - 34 days, respectively. The female can lay an around 1700 - 2000 eggs in its lifespan with an egg mass of 180 - 200. Larva undergo 6 instars with the larval period of ...
... We report the first large-scale augmentative biological control project carried out in Europe against Halyomorpha halys (Stål) (Hemiptera: Pentatomidae) using the native egg parasitoid Anastatus bifasciatus (Geoffroy) (Hymenoptera: Eupelmidae). During summer 2020, a total of 325,000 adults of A. bifasciatus were released at a rate of 1000 individuals/ha of orchard in 11 sites in Trentino-Alto Adig ...
eggmasses, etc ; Nezara viridula; Ooencyrtus; Trissolcus basalis; biological pest control; clutch size; eggs; interspecific competition; parasitoids; tomatoes; Show all 10 Subjects
Abstract:
... BACKGROUND: Interspecific competition in insect parasitoids is an important ecological phenomenon that has relevant implications for biological pest control. To date, interspecific intrinsic (=larval) competition has been intensively studied, while investigations on extrinsic (=adult) competition have often lagged behind. In this study we examined the role played by parasitoid reproductive traits ...
... The aim of this study was to determine the effect of two types of packaging on the change in quality indicators of pasteurised liquid egg mass. Traditionally, the shelf-life of pasteurised liquid egg mass is up to 28 days. The increase in shelf-life would increase the exportation options of this product. The liquid egg mass was pasteurised on the equipment Ovobel AR56SH; the pasteurisation process ...
... Root-knot nematode (Meloidogyne incognita) is an important endoparasite affecting vegetable crops. This nematode is polyphagous and has a wide host range, okra being a major host. All commercial okra cultivars are susceptible to root-knot nematode resulting in substantial yield loss. Keeping this in view, an attempt was made to screen Abelmoschus gene pool comprising okra (Abelmoschus esculentus: ...
eggmasses, etc ; blood serum; body weight; eggs; estradiol; feed intake; gene expression; genes; luteinizing hormone; melatonin; prolactin; China; Show all 12 Subjects
Abstract:
... Melanopsin, a key light sensitive pigment, plays an important role in the regulation of bio-rhythm and photo-adaptation in poultry. This study aimed to investigate the effects of different lighting regimes on performance, pineal melanopsin expression and melatonin content in a native chicken, Beijing You Chicken (BYC) aged from 19 to 34 wk. A total of 900 nineteen-wk-old BYC female chicken having ...
... BACKGROUND: Striacosta albicosta Smith (Lepidoptera: Noctuidae) is a primary pest of corn, Zea mays L., in the Great Lakes region, causing yield loss and exacerbating mycotoxin contamination of grain. Foliar insecticides are currently used to manage S. albicosta; however, the toxicity and residual activity of these insecticides against S. albicosta are unknown. Laboratory and field bioassays were ...
eggmasses, etc ; body weight; claws; color; feed intake; gait; genotype; heart; keel bone; liver; pancreas; plumage; riboflavin; spleen; Show all 14 Subjects
Abstract:
... Data from breeder hens and chicks are particularly critical for the development of vitamin B2 recommendations for organic poultry. To test safe thresholds of supplementation, 100 breeder hens (Hubbard JA 57 K) and ten cockerels were allocated to ten housing groups, with each receiving supplementation of either 4.0 (treatment CON) or 2.5 mg (treatment RED) riboflavin per kg feed. After 15 weeks of ...
eggmasses, etc ; body weight; bone health; diet; egg production; egg shell; egg weight; feed conversion; femur; hens; liver; nutrient density; Show all 12 Subjects
Abstract:
... The effect of hen size and diet nutrient density during early lay on egg production (EP) at 24 and 69 wk of age (WOA) and late lay egg quality and hen health was evaluated. Based on bodyweight (BW) at 18 WOA ISA Brown hens were assigned as heavier (HW; n = 120) or lighter weight (LW; n =120). Sixty birds from each BW group were fed an early-lay diet of higher nutrient density (HND), or lower nutri ...
... The study was designed to investigate productivity parameters, egg quality and the cost effectiveness of feeding laying hens with diets where ground wheat was replaced with varying levels of whole hybrid rye grain cv. Brasetto. A total of 396 Hy-Line Brown hens at 34 weeks of age were allocated to three treatment groups with 66 replicates (cages) of two hens each, and were fed isocaloric and isoni ...
... Formulations of the entomopathogenic fungus Beauveria bassiana (Hypocreales: Cordycipitaceae) were tested under field conditions against the bovine tick adults Rhipicephalus microplus (Acari: Ixodidae). Formulations were prepared for each fungal isolate consisting of 10⁸ conidia.mL⁻¹, 10% avocado oil and either of Ballista® or Break-thru® as an adjuvant sprayed on tick-infested cows. The following ...