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	Provedor de dados BABT (2) Rev. Ciênc. Agron. (1) Autor Silva,José Roberto Feitosa (3) Garcia,Tatiane Martins (1) Linhares,Jussiara Candeira Spíndola (1) Mota,Suetônio Bastos (1) Passos Neto,Oscar Pacheco (1) Santos,André Bezerra dos (1) Mais... Palavra-chave "Andada" (1) 17α-ethinylestradiol (1) 17β-estradiol (1) Brachyura (1) Courtship (1) Emerging pollutants (1) Estuary (1) Goniopsis cruentata (1) Mating (1) Maturation (1) Oreochromis niloticus (1) Reproduction (1) Seasonality (1) Spermatophore (1) Testis (1) Vas deferens (1) Mais... Tipo do documento Info:eu-repo/semantics/article (3) Ano 2019 (1) 2012 (1) 2006 (1) País Brazil (3) Idioma Inglês (3)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 3 Primeira ... 1 ... Última Action of two endocrine disrupters on the sexual differenciation of Nile tilapia Rev. Ciênc. Agron. Passos Neto,Oscar Pacheco; Santos,André Bezerra dos; Silva,José Roberto Feitosa; Mota,Suetônio Bastos. ABSTRACT Endocrine disruptors are exogenous substances that can impair one or more functions of the endocrine system and cause adverse effects to the health of an intact organism. The main goal of this study was to evaluate the effect of the endocrine disruptors 17β-estradiol (E2) and 17α-ethinyl estradiol (EE2) on the sexual differentiation of Nile tilapia during spawning. Six treatments and one control with three replications, totalizing 21 experimental units, were assessed in a completely randomized design. Hormones were dosed at concentrations of 250, 500, and 1,000 ng L−1 (treatments E2-250, E2-500, E2-1,000, EE2-250, EE2-500, and EE2-1,000). Exposure to hormones occurred during the first 28 days of life. After this period, water was completely... Tipo: Info:eu-repo/semantics/article Palavras-chave: Emerging pollutants; Oreochromis niloticus; 17α-ethinylestradiol; 17β-estradiol. Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902019000300402 Reproductive behavior of the mangrove crab Ucides cordatus (Crustacea; Brachyura; Ucididae) BABT Linhares,Jussiara Candeira Spíndola; Silva,José Roberto Feitosa. The aim of the present work was to study the reproductive behavior of the mangrove crab (Ucides cordatus) in the estuary of the Igaraçú River (Piauí, Brazil). Courtship and mating were observed in December 2007 and in January-March 2009. The most frequently observed reproductive behavior was the transference of eggs onto the abdomen of the female. Some disputes between males and some copulations were observed. The males mated with more than one female each night and all mating activity occurred at night. The establishment of a closed season coinciding with the mating season represented an effective strategy for the preservation of the species when the socioeconomic situation of the community of gatherers was taken into account. Tipo: Info:eu-repo/semantics/article Palavras-chave: Courtship; Mating; Maturation; Estuary; "Andada"; Seasonality. Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132012000600014 Testis and vas deferens morphology of the red-clawed mangrove tree crab (Goniopsis cruentata) (Latreille, 1803) BABT Garcia,Tatiane Martins; Silva,José Roberto Feitosa. The present study describes the structure of the testes and vas deferens of the red-clawed mangrove tree crab, Goniopsis cruentata. Testes and vas deferens were fixed with cold Bouin's solution and submitted to histological routine examinations. Light microscopy showed the testis to be divided into three regions: anterior, containing the germinal zone; intermediary, including the collecting duct; and posterior. The vas deferens, which was continuous with the testes, could be divided into two regions: one corresponding to the expansions and another lined by cubical epithelium, collagenous fibers and a circular layer of muscle cells and containing the androgenic gland. Spermatophores were observed in both vas deferens regions suggesting that they... Tipo: Info:eu-repo/semantics/article Palavras-chave: Brachyura; Goniopsis cruentata; Reproduction; Spermatophore; Testis; Vas deferens. Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132006000300019 Registros recuperados: 3 Primeira ... 1 ... Última

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