Results 61 to 70 of about 39,281 (265)
Oogenesis and germinal bed morphology of the brown anole (A. sagrei)
Developmental Dynamics, EarlyView.Abstract Background The brown anole is a model species of the genus Anolis, a squamate (encompassing lizards and snakes) group widely studied in evolutionary, behavioral, and developmental biology. Full genome annotation, the establishment of gene editing techniques, and comprehensive description of reproductive tract morphology and embryogenesis in ...
Bonnie K. Kircher +12 more
wiley +1 more source
Egg quality, fatty acids profile, and hatchability of broiler breeders fed diets supplemented with Conjugated Linoleic Acid (CLA) [PDF]
Ciência e AgrotecnologiaConjugated linoleic acid (CLA) refers to a group of positional and geometric isomers of linoleic acid. Hens fed a diet supplemented with CLA exhibit increased levels of saturated fatty acids, which may influence the quality characteristics of eggs and ...
Poliana Carneiro Martins +5 more
doaj +1 more source
Environmental Toxicology and Chemistry, EarlyView.Abstract There is increasing concern regarding pollutants disrupting the vertebrate thyroid hormone (TH) system, which is crucial for development. Thus, identification of TH system–disrupting chemicals (THSDCs) is an important requirement in the Organisation for Economic Co‐operation and Development (OECD) testing framework.
Lisa Gölz +9 more
wiley +1 more source
FACTORS CONTRIBUTING TO YOLK RETENTION IN POULTRY: A REVIEW [PDF]
Pakistan Veterinary Journal, 2004 Yolk retention and yolk sac infection is considered as an important cause of death in chicken as well as in guinea fowl, duck, turkey, quail and goose.
K. A. Khan, S. A. Khan, A. Aslam, M. Rabbani1 and M.Y. Tipu
doaj
Mixed Germ Cell Tumor with Extensive Yolk Sac Tumor Elements in the Frontal Lobe of an Adult
Case Reports in Surgery, 2012 Intracranial nongerminomatous germ cell tumors (NGGCTs) in unusual locations are extremely rare. Here, we report a case of a yolk sac tumor in the frontal lobe in a middle-aged patient.
Toshihide Takahashi +6 more
doaj +1 more source
Global Change Biology Communications, EarlyView.Embryos are particularly sensitive to thermal challenge. Antarctic fish embryos raised at projected Southern Ocean temperatures hatch during the winter, have a high incidence of morphological abnormalities, have shorter body lengths, and express genes indicative of cellular stress.
Margaret Streeter +6 more
wiley +1 more source
Primary yolk sac tumor of seminal vesicle: a case report and literature review
World Journal of Surgical Oncology, 2012 Background Yolk sac tumor (endodermal sinus tumor) is a rare malignant germ cell tumor arising in the testis or ovary. Extragonadal yolk sac tumor is even rarer and has only been described in case reports.
Yao Xu-Dong +3 more
doaj +1 more source
Tagging Very Small Fish: Two Effective and Low Impact Methods
Journal of Experimental Zoology Part A: Ecological and Integrative Physiology, EarlyView.ABSTRACT Identifying individuals over time and across contexts is essential in many scientific fields. There are a variety of well‐established methods for uniquely marking individuals (e.g., visible implant elastomer, barcodes, paint). However, for some species, life history stages, and/or experiments, existing methods are not sufficient.
Deijah D. Bradley +4 more
wiley +1 more source
Journal of Experimental Zoology Part A: Ecological and Integrative Physiology, EarlyView.ABSTRACT Depletion of dissolved oxygen (DO; hypoxia) and its influence on sensitive fauna and vulnerable life stages is an emerging concern in lotic freshwater ecosystems. A species particularly vulnerable to hypoxia is the Eastern Hellbender—a large‐bodied, fully aquatic salamander which relies on cutaneous respiration and has evolved to thrive in ...
Holly A. Funkhouser +3 more
wiley +1 more source