Reproductive biology of the armored catfish Neoplecostomus microps in a coastal Atlantic Forest stream, southeastern Brazil

Alves, Víctor de Carvalho; Brito, Marcelo Fulgêncio Guedes de; Caramaschi, Erica Pellegrini

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Campo DC	Valor	Lengua/Idioma
dc.contributor.author	Alves, Víctor de Carvalho	-
dc.contributor.author	Brito, Marcelo Fulgêncio Guedes de	-
dc.contributor.author	Caramaschi, Erica Pellegrini	-
dc.date.accessioned	2020-01-24T17:20:06Z	-
dc.date.available	2020-01-24T17:20:06Z	-
dc.date.issued	2019	-
dc.identifier.citation	ALVES, V. de C.; BRITO, M. F. G. de; CARAMASCHI, E. P. Reproductive biology of the armored catfish Neoplecostomus microps in a coastal Atlantic Forest stream, southeastern Brazil. Aquatic Biology, v. 28, p. 45-53, 2019. DOI: https://doi.org/10.3354/ab00706. Disponível em: https://www.int-res.com/abstracts/ab/v28/p45-53/. Acesso em: 24 jan. 2020.	pt_BR
dc.identifier.issn	1864-7790	-
dc.identifier.uri	http://ri.ufs.br/jspui/handle/riufs/12631	-
dc.language	eng	pt_BR
dc.publisher	Inter-Research	pt_BR
dc.relation.ispartof	Aquatic Biology	pt_BR
dc.subject	Biologia reprodutiva	por
dc.subject	Mata Atlântica	por
dc.subject	Neoplecostomus microps	eng
dc.subject	Armored catfish	eng
dc.subject	Reproductive biology	eng
dc.subject	Atlantic forest stream	eng
dc.subject	Macaé river	eng
dc.title	Reproductive biology of the armored catfish Neoplecostomus microps in a coastal Atlantic Forest stream, southeastern Brazil	pt_BR
dc.type	Artigo	pt_BR
dc.identifier.license	Creative Commons Atribuição 4.0 Internacional (CC BY 4.0)	pt_BR
dc.description.resumo	This work aims to analyze reproductive attributes of the species Neoplecostomus microps (Steindachner, 1877), a well-known species of the catfish family Loricariidae but little con - templated in ecological studies. We describe the reproductive behavior of the species and compare the patterns identified in 2 different basins. The specimens (117 males and 102 females), collected in the Macaé River, did not present a bias in sex ratio during the year. In the largest length classes, males predominated and attained earlier maturity than females. The length−weight relationship showed positive allometric growth for both sexes. The variation of the gonadosomatic index and frequency of maturation stages indicated a reproductive period of 4 to 6 mo, starting in September and reaching a peak in November. The mean absolute fecundity was 43.83 (SD = 7.62) oocytes, ranging from 32 to 55 oocytes. The frequency distribution of oocyte diameter of mature ovaries revealed 3 clutches, suggesting batch spawning. A prolonged reproductive period, low fecundity, large eggs, possible parental care, and repeated spawns recorded for N. microps suggest a strategy that maximizes parental fitness. The population structure and reproductive characteristics of this species indicate a tendency toward equilibrium. The early maturation in females in the Macaé River population may favor a more rapid replacement of juveniles in the population as a response to the unstable environmental conditions that the population experiences in the rainy season.	pt_BR
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