Please use this identifier to cite or link to this item:
metadata.artigo.dc.title: Reproductive biology and egg production of Hyalella Longistila (Amphipoda: Hyalellidae), a freshwater amphipod in southeastern Brazil
metadata.artigo.dc.creator: Bastos-Pereira, Rafaela
Bueno, Alessandra Angélica de Pádua
metadata.artigo.dc.subject: Fecundity
Pairing success
Reproductive strategies
Reproductive success
Size-assortative mating
metadata.artigo.dc.publisher: The Crustacean Society
metadata.artigo.dc.identifier.citation: BASTOS-PEREIRA, R.; BUENO, A. A. de P. Reproductive biology and egg production of Hyalella Longistila (Amphipoda: Hyalellidae), a freshwater amphipod in southeastern Brazil. Journal of Crustacean Biology, Woods Hole, v. 36, n. 5, p. 724–730, Sept. 2016.
metadata.artigo.dc.description.abstract: The reproductive biology of Hyalella longistila (Faxon, 1876), a freshwater amphipod found in streams in southeastern Brazil, was investigated. We assessed body-size relationships between paired and unpaired males and females as well as the egg stage, fecundity, relationship between number of eggs and their stage, number of eggs and female size, and pairing and reproductive success. A positive Spearman rank correlation was observed between the cephalothorax length (CL) of paired males and females. The mean CL of paired males and females was positively related, indicating a size-assortative mating. The mean fecundity was 12.88±2.00 eggs per female, with peaks in August 2012 and September 2012, with 16.82 and 15.08 eggs per female, respectively. The developmental stage and the number of eggs found on the brood pouch were negatively correlated, indicating that as the embryo developed, fewer eggs remained in the egg pouch (marsupium). Higher values for male pairing success were observed for size classes between 0.59 and 0.67mm , and both sexes presented higher values for reproductive success between 0.63 and 0.68mm . Our results could support conservation practices or even studies using such amphipods as model organisms.
metadata.artigo.dc.language: en_US
Appears in Collections:DBI - Artigos publicados em periódicos

Files in This Item:
There are no files associated with this item.

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.