Results 61 to 70 of about 28,607 (286)
Gonadal development in scorpion mud‐turtles, Kinosternon scorpioides, in a controlled environment
The Anatomical Record, EarlyView.Stage 20 was identified as the critical point for gonadal differentiation in Kinosternon scorpioides, providing key insights into sex determination. These findings enhance conservation strategies by supporting reproductive management and population viability in both in situ and ex situ programs. Abstract Research on gonadal development including sexual
Brenda Braga +4 more
wiley +1 more source
Results of Epidemiological Monitoring Bird Flu in Kyrgyz Republic
Эпидемиология и вакцинопрофилактика, 2016 The results of the study with modern molecular genetic research methods the circulation in the Kyrgyzstan territory avian flu virus in waterfowl and humans.
K. T. Kasymbekova +3 more
doaj +1 more source
Aquatic Bird Bornavirus 1 in Wild Geese, Denmark [PDF]
Emerging Infectious Diseases, 2015 To investigate aquatic bird bornavirus 1 in Europe, we examined 333 brains from hunter-killed geese in Denmark in 2014. Seven samples were positive by reverse transcription PCR and were 98.2%-99.8% identical; they were also 97.4%-98.1% identical to reference strains of aquatic bird bornavirus 1 from geese in North America.
Thomsen, Anders F +5 more
openaire +4 more sources
Do seasonally fluctuating aquatic subsidies influence the distribution pattern of birds between riparian and upland forests? [PDF]
, 2007 Seasonal fluctuation of allochthonous subsidies influences food web structure and dynamics in recipient communities. This study investigated whether aquatic subsidies influence the dynamics of insectivorous birds in entire catchment.
Murakami, Masashi +3 more
core +1 more source
The Anatomical Record, EarlyView.Abstract Tyrannosaurus is viewed as a model organism in vertebrate paleontology, with numerous studies analyzing its feeding biomechanics. Nonetheless, the evolution of this feeding performance has been under‐addressed in Tyrannosauroidea, especially in basal tyrannosauroids. Here we used muscle‐force reconstruction and finite element analysis (FEA) to
Evan Johnson‐Ransom +4 more
wiley +1 more source
Frontiers in Microbiology, 2023 Subtype H10 avian influenza viruses (AIV) are distributed worldwide in wild aquatic birds, and can infect humans and several other mammalian species. In the present study, we investigated the naturally mutated PB2 gene in A/aquatic bird/South Korea/SW1 ...
Mark Zanin +13 more
doaj +1 more source
AQUATIC LOCOMOTION IN BIRDS – BIOMECHANICS, MORPHOMETRICS, AND EVOLUTION
, 2021 The entire diversity of life on earth exists in air or water. Whether an organism lives in air or water provides the most fundamental description of its physical world and establishes an organism’s ecological niche on the most essential level.
Lapansky, Anthony Barrett
core
Osteohistology of two phorusrhacids reveals uninterrupted growth strategy
The Anatomical Record, EarlyView.Abstract Phorusrhacidae were apex predators that primarily dominated South America ecosystems for at least 40 million years with their imposing size and predatory lifestyle—yet some aspects of their biology remain poorly understood. Osteohistology is a tool for understanding growth dynamics and biomechanical adaptations.
Lotta Dreyer +2 more
wiley +1 more source
The Anatomical Record, EarlyView.Abstract Differences in skull and tooth morphology, stomach contents, and estimated bite force between medium‐to‐large sized (≥100 kg) predatory theropod dinosaurs have long been suspected to correlate with differences in their diets and dietary guilds (e.g., hypercarnivory, piscivory).
Cassius Morrison +9 more
wiley +1 more source
Acta Biológica Colombiana, 2019 Neotropical amphibians play important roles as preys and predators in freshwater and terrestrial ecosystems. The subfamily Pseudinae includes small and medium-sized frogs within three genera representing 13 valid species.
Paulo Landgref Filho +6 more
doaj +1 more source