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Sexual maturity, fecundity, and embryo loss in the pontoniine shrimp Cuapetes americanus (Kingsley, 1878) (Decapoda: Palaemonidae) in Bahía de la Ascensión, Quintana Roo, Mexico

Sexual maturity, fecundity, and embryo loss in the pontoniine shrimp Cuapetes americanus... Cuapetes americanus (Kingsley, 1878) is distributed along the Atlantic coast of the Americas, from North Carolina and Bermuda to São Paulo, Brazil and the West Indies. The present goal was to conduct a comparative study of reproductive aspects of C. americanus : size at sexual maturity, fecundity, and embryo loss. Specimens were obtained from Bahía de la Ascensión, Quintana Roo, Mexico in November 2000 ( n = 345 ) and November 2001 ( n = 156 ). Samples were collected with a marsh net on Thalassia testudinum -meadows. The average size of the specimens was significantly different between the two dates, with larger females in 2001 (2.46 ± 0.47 mm CL) than in 2000 (2.20 ± 0.23 mm CL). The size at which females reached sexual maturity was 2.01 ± 0.24 mm CL in 2000, and 2.39 ± 0.51 mm CL in 2001. The embryos were categorized in three embryonic stages. Average fecundity at the first stage of development was higher in specimens collected in 2001 (74 ± 57) than in 2000 (47 ± 21). On both sampling dates, fecundity increased with female size but also varied among females of the same size group. Embryos were significantly larger in 2000 than in 2001 (0.034 mm 3 and 0.028 mm 3 , respectively). The maximum increase of embryo volume (78.5%) and brood loss (27.5%) with developmental stage was seen in 2001. The differences between the sampling dates and from others populations of this species from different localities suggested an apparent plasticity of the reproductive traits of C. americanus . http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Crustacean Biology Brill

Sexual maturity, fecundity, and embryo loss in the pontoniine shrimp Cuapetes americanus (Kingsley, 1878) (Decapoda: Palaemonidae) in Bahía de la Ascensión, Quintana Roo, Mexico

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References (75)

Publisher
Brill
Copyright
Copyright 2014 by The Crustacean Society. Published by Brill NV, Leiden.
Subject
Ecology
ISSN
0278-0372
eISSN
1937-240X
DOI
10.1163/1937240X-00002235
Publisher site
See Article on Publisher Site

Abstract

Cuapetes americanus (Kingsley, 1878) is distributed along the Atlantic coast of the Americas, from North Carolina and Bermuda to São Paulo, Brazil and the West Indies. The present goal was to conduct a comparative study of reproductive aspects of C. americanus : size at sexual maturity, fecundity, and embryo loss. Specimens were obtained from Bahía de la Ascensión, Quintana Roo, Mexico in November 2000 ( n = 345 ) and November 2001 ( n = 156 ). Samples were collected with a marsh net on Thalassia testudinum -meadows. The average size of the specimens was significantly different between the two dates, with larger females in 2001 (2.46 ± 0.47 mm CL) than in 2000 (2.20 ± 0.23 mm CL). The size at which females reached sexual maturity was 2.01 ± 0.24 mm CL in 2000, and 2.39 ± 0.51 mm CL in 2001. The embryos were categorized in three embryonic stages. Average fecundity at the first stage of development was higher in specimens collected in 2001 (74 ± 57) than in 2000 (47 ± 21). On both sampling dates, fecundity increased with female size but also varied among females of the same size group. Embryos were significantly larger in 2000 than in 2001 (0.034 mm 3 and 0.028 mm 3 , respectively). The maximum increase of embryo volume (78.5%) and brood loss (27.5%) with developmental stage was seen in 2001. The differences between the sampling dates and from others populations of this species from different localities suggested an apparent plasticity of the reproductive traits of C. americanus .

Journal

Journal of Crustacean BiologyBrill

Published: Jan 1, 2014

Keywords: Cuapetes americanus ; embryo loss; fecundity; Mexican Caribbean; Palaemonidae

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