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Tipo de Documento:	Artigo
Título :	Reproductive biology of the armored catfish Neoplecostomus microps in a coastal Atlantic Forest stream, southeastern Brazil
Autor :	Alves, Víctor de Carvalho Brito, Marcelo Fulgêncio Guedes de Caramaschi, Erica Pellegrini
Fecha de publicación :	2019
Resumen:	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.
Palabras clave :	Biologia reprodutiva Mata Atlântica Neoplecostomus microps Armored catfish Reproductive biology Atlantic forest stream Macaé river
ISSN :	1864-7790
Es parte de:	Aquatic Biology
Idioma :	eng
Institución / Editorial :	Inter-Research
Citación :	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.
License:	Creative Commons Atribuição 4.0 Internacional (CC BY 4.0)
URI :	http://ri.ufs.br/jspui/handle/riufs/12631
Aparece en las colecciones:	DBI - Artigos de periódicos PPEC - Artigos de periódicos

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