Reproduction of Hypoptopoma inexspectatum (Holmberg, 1893) (Siluriformes, Loricariidae) in the Southern Pantanal Floodplain, Upper Paraguay River Basin, Brazil.
| Autor: | Pereira MJ; Programa de Pós-graduação em Recursos Naturais - PGRN, Universidade Estadual de Mato Grosso do Sul - UEMS, Rod. Dourados Itahum, Km 12, CEP 79804-970, Dourados, MS, Brasil., Viana LF; Programa de Pós-graduação em Recursos Naturais - PGRN, Universidade Estadual de Mato Grosso do Sul - UEMS, Rod. Dourados Itahum, Km 12, CEP 79804-970, Dourados, MS, Brasil., Sais MHB; Curso de Graduação em Ciências Biológicas, Unidade Universitária de Dourados, Universidade Estadual de Mato Grosso do Sul - UEMS, Rod. Dourados Itahum, Km 12, CEP 79804-970, Dourados, MS, Brasil., Súarez YR; Laboratório de Ecologia, Centro de Estudos em Recursos Naturais, Universidade Estadual de Mato Grosso do Sul - UEMS, Rod. Dourados Itahum, Km 12, CEP 79804-970, Dourados, MS, Brasil. |
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| Jazyk: | angličtina |
| Zdroj: | Brazilian journal of biology = Revista brasleira de biologia [Braz J Biol] 2021 Mar-May; Vol. 81 (2), pp. 326-334. |
| DOI: | 10.1590/1519-6984.225352 |
| Abstrakt: | This work aimed to describe the reproductive biology of Hypoptopoma inexspectatum in southern Pantanal. A total of 538 individuals were sampled and analyzed from February 2009 through January 2011 in southern Pantanal. We did not observe differences in sex-ratio, and both sexes presented positive allometric length/weight relationship (LWR). Reproduction occurs mainly from January to February. Females reached first maturation (L50) with 37.80 mm and males with 45.80 mm. Absolute fecundity is estimated in mean=177.43 (sd±127.06) oocytes and relative fecundity in 3.12 (sd±2.23) oocytes/mg. Fecundity is positively correlated with standard length (Spearman r= 0.43; p=0.013), and total spawning is a used spawning strategy for H. inexspectatum. |
| Databáze: | MEDLINE |
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