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Embryo production in the sponge-dwelling snapping shrimp Synalpheusapioceros (Decapoda, Alpheidae) from Bocas del Toro, Panama.

Rebolledo AP, Wehrtmann IS, Felder DL, Mantelatto FL - Zookeys (2014)

Bottom Line: Compared to Synalpheus species with abbreviated or direct development, Synalpheusapioceros produced substantially smaller embryos; however, Synalpheusapioceros seems to have a prolonged larval phase with at least five zoeal stages, which may explain the combination of relatively small and numerous embryos.We did not find nonviable, minute, chalky embryos, previously reported for Synalpheusapioceros specimens obtained from the northwestern Gulf of Mexico, which supports the hypothesis that the production of this type of embryos may be a physiological response of this warm-water species to the temperature decrease near to its latitudinal range limit.Abstract available from the publisher.

View Article: PubMed Central - HTML - PubMed

Affiliation: Unidad de Investigación Pesquera y Acuicultura (UNIP) of the Centro de Investigación en Ciencias del Mar y Limnología (CIMAR), Universidad de Costa Rica, 11501-2060 San José, Costa Rica.

ABSTRACT
Caridean shrimps of the genus Synalpheus are abundant and widely distributed in tropical and subtropical regions, but knowledge of their reproductive biology remains scarce. We report reproductive traits of Synalpheusapioceros from Bocas del Toro, Panama, based on collections in August 2011. The 46 ovigerous females that were analyzed ranged in size from 3.8 to 7.4 mm in carapace length. Fecundity varied between 8 and 310 embryos and increased with female size. Females invested 18.6 ± 10.3% of their body weight in Embryo production. Embryo volume increased considerably (77.2%) during embryogenesis, likely representing water uptake near the end of incubation period. Compared to Synalpheus species with abbreviated or direct development, Synalpheusapioceros produced substantially smaller embryos; however, Synalpheusapioceros seems to have a prolonged larval phase with at least five zoeal stages, which may explain the combination of relatively small and numerous embryos. We did not find nonviable, minute, chalky embryos, previously reported for Synalpheusapioceros specimens obtained from the northwestern Gulf of Mexico, which supports the hypothesis that the production of this type of embryos may be a physiological response of this warm-water species to the temperature decrease near to its latitudinal range limit.

No MeSH data available.


Related in: MedlinePlus

Relation between carapace length and fecundity of Synalpheusapioceros females carrying stage I embryos, Bocas del Toro, Panama.
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Figure 2: Relation between carapace length and fecundity of Synalpheusapioceros females carrying stage I embryos, Bocas del Toro, Panama.

Mentions: Fecundity in Stage I ranged from 8 to 310, and increased with female size (Pearson’s correlation, r = 0.68, p < 0.05) (Fig. 2). Females within the same size-class presented different number of embryos (Fig. 2 and Table 1). Energy invested in embryo production by the females was not related to female size (Pearson’s correlation, r = 0.26, p > 0.05). The embryo mass comprised on average 18.6 ± 10.3% (4.8–40.1%) of the dry body weight of the females.


Embryo production in the sponge-dwelling snapping shrimp Synalpheusapioceros (Decapoda, Alpheidae) from Bocas del Toro, Panama.

Rebolledo AP, Wehrtmann IS, Felder DL, Mantelatto FL - Zookeys (2014)

Relation between carapace length and fecundity of Synalpheusapioceros females carrying stage I embryos, Bocas del Toro, Panama.
© Copyright Policy - creative-commons-attribution
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4283373&req=5

Figure 2: Relation between carapace length and fecundity of Synalpheusapioceros females carrying stage I embryos, Bocas del Toro, Panama.
Mentions: Fecundity in Stage I ranged from 8 to 310, and increased with female size (Pearson’s correlation, r = 0.68, p < 0.05) (Fig. 2). Females within the same size-class presented different number of embryos (Fig. 2 and Table 1). Energy invested in embryo production by the females was not related to female size (Pearson’s correlation, r = 0.26, p > 0.05). The embryo mass comprised on average 18.6 ± 10.3% (4.8–40.1%) of the dry body weight of the females.

Bottom Line: Compared to Synalpheus species with abbreviated or direct development, Synalpheusapioceros produced substantially smaller embryos; however, Synalpheusapioceros seems to have a prolonged larval phase with at least five zoeal stages, which may explain the combination of relatively small and numerous embryos.We did not find nonviable, minute, chalky embryos, previously reported for Synalpheusapioceros specimens obtained from the northwestern Gulf of Mexico, which supports the hypothesis that the production of this type of embryos may be a physiological response of this warm-water species to the temperature decrease near to its latitudinal range limit.Abstract available from the publisher.

View Article: PubMed Central - HTML - PubMed

Affiliation: Unidad de Investigación Pesquera y Acuicultura (UNIP) of the Centro de Investigación en Ciencias del Mar y Limnología (CIMAR), Universidad de Costa Rica, 11501-2060 San José, Costa Rica.

ABSTRACT
Caridean shrimps of the genus Synalpheus are abundant and widely distributed in tropical and subtropical regions, but knowledge of their reproductive biology remains scarce. We report reproductive traits of Synalpheusapioceros from Bocas del Toro, Panama, based on collections in August 2011. The 46 ovigerous females that were analyzed ranged in size from 3.8 to 7.4 mm in carapace length. Fecundity varied between 8 and 310 embryos and increased with female size. Females invested 18.6 ± 10.3% of their body weight in Embryo production. Embryo volume increased considerably (77.2%) during embryogenesis, likely representing water uptake near the end of incubation period. Compared to Synalpheus species with abbreviated or direct development, Synalpheusapioceros produced substantially smaller embryos; however, Synalpheusapioceros seems to have a prolonged larval phase with at least five zoeal stages, which may explain the combination of relatively small and numerous embryos. We did not find nonviable, minute, chalky embryos, previously reported for Synalpheusapioceros specimens obtained from the northwestern Gulf of Mexico, which supports the hypothesis that the production of this type of embryos may be a physiological response of this warm-water species to the temperature decrease near to its latitudinal range limit.

No MeSH data available.


Related in: MedlinePlus