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	Provedor de dados Zoologia (2) Biota Neotropica (1) Autor Santos,Gilmar Bastos (3) Bazzoli,Nilo (2) Callisto,Marcos (1) Hojo,Renê Eiji Souza (1) Hughes,Robert M. (1) Kaufmann,Philip Robert (1) Martins,Isabela (1) Molozzi,Joseline (1) Rizzo,Elizete (1) Sanches,Barbara (1) Santos,José Enemir dos (1) Mais... Palavra-chave Spawning (2) Bioindicators (1) Environmental quality (1) Gonadal maturation (1) Gonads (1) Physical habitat (1) Pimelodidae (1) Reproduction (1) Reservoirs (1) Sexual dimorphism (1) Sexual maturation (1) Water quality (1) Mais... Tipo do documento Info:eu-repo/semantics/article (3) Ano 2015 (1) 2004 (2) País Brazil (3) Idioma Inglês (3)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 3 Primeira ... 1 ... Última Reproductive biology of Moenkhausia intermedia (Eigenmann) (Pisces, Characiformes) in Itumbiara Reservoir, Goiás, Brazil Zoologia Hojo,Renê Eiji Souza; Santos,Gilmar Bastos; Bazzoli,Nilo. To study the reproductive biology of Moenkhausia intermedia (Eigenmann, 1908) in Itumbiara reservoir, Paranaíba river, Goiás, Brazil, a total of 301 specimens (237 females and 64 males) were captured quaterly from January to December 1993. The gonadosomatic index of females and males were related to morphologic variations of the gonads in different reproductive cycle stages (RCS). Analysis of RCS frequency and variations in the gonadosomatic index showed that M. intermedia reproduces during the whole year with fractional spawning. The smallest standard length at advanced maturity stage was estimated as 6.6 cm for females and 6.0 cm for males. The stomach repletion and coelomic fat indexes of both sexes reached peak values in the rest stage, suggesting that... Tipo: Info:eu-repo/semantics/article Palavras-chave: Gonads; Reproduction; Sexual dimorphism; Sexual maturation; Spawning. Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752004000300015 Reproduction of the catfish Iheringichthys labrosus (Lütken) (Pisces, Siluriformes) in Furnas reservoir, Minas Gerais, Brazil Zoologia Santos,José Enemir dos; Bazzoli,Nilo; Rizzo,Elizete; Santos,Gilmar Bastos. The reproductive biology of Iheringichthys labrosus (Lütken, 1874) was studied in Furnas reservoir, Minas Gerais, Brazil. The fishes, 323 males and 817 females, were captured bimonthly from August 1993 to July 1994 by using gill nets with 3-10 cm mesh size. Gonadal maturation of the specimens was analyzed through macro and microscopical characteristics of the gonads. The secretory activity of the tubules of the caudal region of the testis was analyzed during the maturational testicular cycle. Females and males were in reproductive activity throughout the year in the reservoir. The peak of advanced maturation/mature stages occurred from October to January and of spawned/spent from February to May. The spawning of I. labrosus was identified as fractional or... Tipo: Info:eu-repo/semantics/article Palavras-chave: Gonadal maturation; Pimelodidae; Spawning. Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752004000200006 Ecological assessment of a southeastern Brazil reservoir Biota Neotropica Martins,Isabela; Sanches,Barbara; Kaufmann,Philip Robert; Hughes,Robert M.; Santos,Gilmar Bastos; Molozzi,Joseline; Callisto,Marcos. Reservoirs are artificial ecosystems with multiple functions having direct and indirect benefits to humans; however, they also cause ecological changes and influence the composition and structure of aquatic biota. Our objectives were to: (1) assess the environmental condition of Nova Ponte Reservoir, Minas Gerais state, southeastern Brazil; and (2) determine how the aquatic biota respond to disturbances. A total of 40 sites in the littoral zone of the reservoir were sampled to characterize physical and chemical habitat, land use, and benthic macroinvertebrate and fish assemblages. The predominant type of land cover near the reservoir was natural vegetation. A total of 29 fish species and 39 macroinvertebrate taxa were collected, including eight alien... Tipo: Info:eu-repo/semantics/article Palavras-chave: Reservoirs; Water quality; Bioindicators; Physical habitat; Environmental quality. Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032015000100103 Registros recuperados: 3 Primeira ... 1 ... Última

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