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Female germ cell renewal during the annual reproductive cycle in Ostariophysians fish
(2013-03-01)
The objective was to characterize female germ cell renewal during the annual reproductive cycle in two species of ostariophysian fish with distinct reproductive strategies: a siluriform, Pimelodus maculatus, in which oocyte ...
Gonadal morphology and difference in reproductive development of two isolated populations of Astyanax rivularis (Teleostei, Characidae)
(2021-01-01)
Individuals of the same species may present different reproductive tactics depending on the environment in which they develop and mature. The present study aimed to define the gonadal development phases of males and females ...
Epigenetic modifications and their roles in animal reproduction.
(In: SENEDA , M. M.; SILVA-SANTOS, K. C.; MARINHO, L. S. R. (Ed.). Biotechnology of animal reproduction. New York: Nova Science Publishers, Inc., 2016. (Recent trends in biotechnology). p. 315-341., 2016)
Reproductive disorders in female rats after prenatal exposure to betamethasone
(2017-09-01)
Betamethasone is the drug of choice for antenatal treatment, promoting fetal lung maturation and decreasing mortality. Previous studies in rats reported male programming and alteration in sperm parameters and sexual behavior ...
The Epididymis as a Target for Toxicants
(2017-12-15)
The epididymis is the organ in which sperm mature by developing the capacity for progressive motion and fertilizing ability. There is evidence that sperm quality in humans and other animals has diminished, in parallel with ...
Extracellular vesicles and its advances in female reproduction
(2018-01-01)
Intercellular communication is an essential mechanism for development and maintenance of multicellular organisms. Extracellular vesicles (EVs) were recently described as new players in the intercellular communication. EVs ...
Reproductive biology of the rock shrimp Sicyonia dorsalis (Decapoda: Penaeoidea) from the southeastern coast of Brazil
(Int Science Services/balaban Publishers, 2008-12-01)
Sicyonia dorsalis is not commercially exploited in Brazil, but it forms a critical link in marine food chains by converting detritus food sources into microorganism biomass that is available for higher trophic levels. We ...
Dwarf gynes in Nannotrigona testaceicornis (Apidae, Meliponinae, Trigonini). Behaviour, exocrine gland morphology and reproductive status
(1997-05-01)
The behaviour and morphology of dwarf gynes produced in worker-sized cells of normal colonies in Nannotrigona testaceicornis (Meliponinae, Trigonini) were studied. The behaviour of these dwarf virgin queens was the same ...