Web8 de jan. de 2010 · Indeed, Cyp17a1 could participate in the shift from E2 to maturation-inducing steroid production observed in fish and amphibians during late oogenesis [40, 75]. In addition, Cyp17a1 could also participate in the production of androgens that have been evidenced to play important roles during late oogenesis in both amphibians and fish … Web1 de jul. de 2009 · Teleost fishes also produce two unique progestogens often referred to as the maturation inducing steroids (MIS): 17,20β-dihydroxy-4-pregnen-3-one (DHP) and …
Transcription factor Sox3 is required for oogenesis in the teleost …
Websimilar in different fish species. The ovaries of the fishes have been classified into three types according to the pattern of the oocyte development (Selman and Wallace, 1989). … WebThe adult ovary was examined in a freshwater crayfish, Procambarus clarkii, to clarify the ovarian structure and the mode of oogenesis. A Y-shaped ovary consisting of a pair of anterior ovarian sacs and a single posterior ovarian sac was located in the cephalothorax, on the dorsal side of the stomach. An oviduct connected each of the posterior ends of … is field service part of customer service
Ovary Maturatıon Stages and Histological Investigation of Ovary …
Web7 de jan. de 2024 · In fish, little is known about inhibin structure and endocrine regulation despite its immense importance in reproduction of female mammals. This review focuses on recent advances in the field of inhibins in fish with special emphasis on its structure, receptor interaction, mechanisms of action and its physiological role of in the oogenesis … Web9 de fev. de 2010 · Data on the hydration of oocytes in teleost fishes during maturation stimulated by gonadotropic or steroid hormones in vivo and in vitro are reviewed. The cause of hydration, its dynamics, and some mechanisms ensuring uptake of water and ions by the oocyte are considered. Download to read the full article text. Web10 de dez. de 2024 · Pronounced disruptions in oogenesis were observed through histological and ultrastructure investigations in insects collected ... Lotfy NM, Hassanein MA, et al. (2011) Evaluation of DNA damage in fish and aquatic insects induced by environmental pollutants in river Nile. World Applied Sciences Journal 14: 1085–1090. … ryobi scroll saw sc164vs