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Gonadotropins and Growth Hormone Family Characterization in an Endangered Siluriform Species, Steindachneridion parahybae (Pimelodidae): Relationship With Annual Reproductive Cycle and Induced Spawning in Captivity
(Wiley, 2015-09)
The aim of this study was to identify and characterize pituitary cells of Steindachneridion parahybae females in captivity, highlighting the possible relationship with reproductive disorders at this level, since this species ...
Somatotrophic and thyroid hormones around the onset of lay in broiler breeders under different conditions
(Akademiai Kiado, 2002-01-01)
Somatotrophic and thyroid hormones were determined around the onset of reproduction in broiler breeders reared in two different housing systems [dark, close-sided house (CH) and conventional, open-sided house (OH)]. In ...
Somatotrophic and thyroid hormones around the onset of lay in broiler breeders under different conditions
(Akademiai Kiado, 2002-01-01)
Somatotrophic and thyroid hormones were determined around the onset of reproduction in broiler breeders reared in two different housing systems [dark, close-sided house (CH) and conventional, open-sided house (OH)]. In ...
Neuropeptide and steroid hormone mediators of neuroendocrine regulation
(2018-01-01)
To maintain the health and well-being of all mammals, numerous aspects of physiology are controlled by neuroendocrine mechanisms. These mechanisms ultimately enable communication between neurones and glands throughout the ...
Hormone Levels and Ultrasound Evaluation of Caiman latirostris (Crocodylia, Alligatoridae) Ovulation
(Brazilian Society of Herpetology, 2015-04)
Although there is much information available about reproduction in Caiman latirostris, knowledge related to steroid hormone levels and follicle development for wild adult females is still lacking. In this study we monitored ...
Thyroid hormone actions on male reproductive system of teleost fish
(2018-09-01)
Thyroid hormones (THs) play important roles in the regulation of many biological processes of vertebrates, such as growth, metabolism, morphogenesis and reproduction. An increasing number of studies have been focused on ...
Immunohistochemical study of pituitary cells in wild and captive Salminus hilarii (Characiformes: Characidae) females during the annual reproductive cycle
(SpringerPlus, 2013-09-13)
Freshwater fish that live exclusively in rivers are at particular risk from fragmentation of the aquatic system, mainly the species that migrate upriver for reproduction. That is the case of Salminus hilarii, an important ...
Effects of treatment of the fat body trophocytes of Melipona quadrifasciata anthidioides nurse workers and virgin queens in culture by juvenile hormone III and ecdysterone (20-HE)
(2013-01-01)
The fat body (FB) consists of two types of cells: throphocytes and oenocytes. Throphocytes are related to intermediary metabolism storing lipids, carbohydrates, and proteins while oenocytes play role in the lipids and ...
Reproductive performance, metabolic and hormonal profiles of Santa Inês ewes in winter and summer under tropical conditions
(2015-03-01)
The study aimed to evaluate the reproductive, metabolic and hormonal profiles of Santa Inês ewes during winter and summer in the tropical climate of Rio de Janeiro State, Brazil. The ewes (n = 16) were prepared for induction ...