Results 91 to 100 of about 380,752 (346)

Estimation of the populations status and habitat conditions of Anseriformes in the State Nature Reserve «Gydansky» (Russia) using ultralight aviation

open access: yesNature Conservation Research: Заповедная наука, 2018
The Gydan Peninsula is one of the least explored and inaccessible Arctic regions in both the Yamalo-Nenetsky Autonomous Okrug and Russia as a whole. In 2016–2017 we conducted a survey of the Gydansky State Nature Reserve and adjacent areas, counted and ...
Sofia B. Rozenfeld   +6 more
doaj   +1 more source

Influence of housing systems on duck behavior and welfare

open access: yesJournal of Advanced Veterinary and Animal Research, 2020
Objective: This experiment was conducted to assess the effects of the housing system on the welfare and growth performance of the Muscovy duck. Materials and methods: A total number of 48 Muscovy duck aged 3-week old were divided randomly into two groups
Shereen El Abdel-Hamid   +4 more
semanticscholar   +1 more source

The spread of non‐native species

open access: yesBiological Reviews, EarlyView.
ABSTRACT The global redistribution of species through human agency is one of the defining ecological signatures of the Anthropocene, with biological invasions reshaping biodiversity patterns, ecosystem processes and services, and species interactions globally.
Phillip J. Haubrock   +16 more
wiley   +1 more source

A Conceptual Model for Spatial Grain Size Variability on the Surface of and within Beaches

open access: yesJournal of Marine Science and Engineering, 2016
Grain size on the surface of natural beaches has been observed to vary spatially and temporally with morphology and wave energy. The stratigraphy of the beach at Duck, North Carolina, USA was examined using 36 vibracores (~1–1.5 m long) collected along a
Edith Gallagher   +4 more
doaj   +1 more source

High-mobility group box 1 protein (HMGB1) from Cherry Valley duck mediates signaling pathways and antiviral activity

open access: yesVeterinary Research, 2020
High-mobility group box 1 protein (HMGB1) shows endogenous damage-associated molecular patterns (DAMPs) and is also an early warning protein that activates the body’s innate immune system.
Xiaolan Hou   +11 more
semanticscholar   +1 more source

Beyond mammals: the evolution of chewing and other forms of oropharyngeal food processing in vertebrates

open access: yesBiological Reviews, EarlyView.
ABSTRACT Oropharyngeal food processing exhibits a remarkable diversity among vertebrates, reflecting the evolution of specialised ‘processing centres’ associated with the mandibular, hyoid, and branchial arches. Although studies have detailed various food‐processing strategies and mechanisms across vertebrates, a coherent and comprehensive terminology ...
Daniel Schwarz   +6 more
wiley   +1 more source

Genetic characterization of duck Tembusu virus in Thailand, 2015-2017: Identification of a novel cluster.

open access: yesTransboundary and Emerging Diseases, 2019
Duck Tembusu virus (DTMUV) infected cases have increasingly been observed in several duck farms in Thailand since its first report in 2013. However, information on the genetic characteristic of DTMUVs recently circulating in ducks in Thailand is limited.
Patchareeporn Ninvilai   +4 more
semanticscholar   +1 more source

A comprehensive embryonic staging series of the turtle Trachemys scripta

open access: yesDevelopmental Dynamics, EarlyView.
Abstract Background Turtles hold a unique place in vertebrate evolutionary history, making them critical assets in embryology research. Yet, they remain understudied as potential model organisms in the field. Here, to support experimental manipulations with turtle embryos, we have created a complete normal table of development for comprehensive ...
Christina M. Noravian   +6 more
wiley   +1 more source

Analysis of the Genetic Diversity and Origin of Some Chinese Domestic Duck Breeds

open access: yesJournal of Integrative Agriculture, 2014
Twelve fluorescence-labeled microsatellite markers were used to analyze the genetic diversity of 12 domestic duck breeds and 2 wild duck breeds to determine the relationship and origin of Chinese domestic duck breeds.
Yang ZHANG   +9 more
doaj   +1 more source

The Philippine Duck Industry: Issues and Research Needs [PDF]

open access: yes
The Philippine duck industry is dominated by balut (partially hatched embryos) production and by smallholder production that accounted for more than 75 percent of the total duck production.
Chang, Hui-Shung (Christie)   +1 more
core   +1 more source

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