Breeding and heterosexual pairing in the snapping shrimp Alpheus estuariensis (Caridea: Alpheidae) in a tropical bay in northeastern Brazil

Costa-Souza, Ana Carla; Rocha, Sérgio Schwarz da; Almeida, Alexandre Oliveira

doi:10.1163/1937240x-00002258

Cited by 21 publications

(25 citation statements)

References 46 publications

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“…In S. carvachoi, a weak positive correlation was observed between fecundity and female size (CL). This result differs from what has been observed in most of studies on caridean shrimps (Balasundaram & Pandian, 1982;Bauer, 1991;Corey & Reid, 1991;Anger & Moreira, 1998, Pavanelli et al, 2008, 2010Costa-Souza et al, 2014;Rebolledo et al, 2014;Pescinelli et al, 2016). A positive correlation between fecundity and SW (sternite width), and between fecundity and PW (width of the pleura of the second abdominal somite) was observed.…”

Section: Discussioncontrasting

confidence: 93%

“…Although the mean volume of embryos in stage III was relatively higher than in stage II, this difference was not statistically significant. The embryos increased 93% in volume, which may be considered a relatively high increase compared to the observed in some species of Alpheus, such as A. carlae Anker, 2012[as A. armillatus (H. Milne Edwards, 1834] (64.3%; see Pavanelli et al, 2008), A. estuariensis (45.4%; see Costa-Souza et al, 2014), A. brasileiro Anker, 2012 (35.4%;see Pescinelli et al, 2016), and Synalpheus apioceros Coutière, 1909(77.2%, see Rebolledo et al, 2014. On the other hand, the increase in embryo size is relatively smaller compared to Betaeus emarginatus H. Milne Edwards, 1837 (116.2%; see Lardies & Wehrtmann, 1997) and B. truncatus from the Guanaqueros, Chile (94.4%; see Lardies & Wehrtmann, 2001).…”

Section: Discussionmentioning

confidence: 78%

“…The increase in embryo volume and the concomitant embryo loss along the embryo development have also been observed in carideans (Balasundaram & Pandian, 1982;Corey & Reid, 1991;Anger & Moreira, 1998). Within the family Alpheidae, this has been seen in species of the genus Alpheus Fabricius, 1798 (Fernández-Muñoz & García-Raso, 1987;Bauer, 1991;Corey & Reid, 1991;Wehrtmann & Graeve, 1998;Atkinson et al, 2003;Pavanelli et al, 2008Pavanelli et al, , 2010Harikrishnan et al, 2010;Costa-Souza et al, 2014;Pescinelli et al, 2016;Soledade et al, 2017), Betaeus Dana, 1852 (Lardies & Wehrtmann, 1997, 2001 and Synalpheus Spence Bate, 1888 (Corey & Reid, 1991;Hernáez et al, 2010;Rebolledo et al, 2014).…”

Section: Introductionmentioning

confidence: 89%

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Fecundity, embryo size and embryo loss in the estuarine shrimp Salmoneus carvachoi Anker, 2007 (Crustacea: Alpheidae) from a tidal mudflat in northeastern Brazil

et al. 2018

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Studies on fecundity and embryo size have been frequently used to infer about the reproductive potential, embryogenesis, and the energy investment in embryo production in crustaceans. These parameters are relevant to the knowledge of life-history and diversity of reproductive strategies developed by this group. This study addressed the embryo production by the estuarine shrimp Salmoneus carvachoi Anker, 2007, a poorly known caridean shrimp. We investigated whether there was (1) a correlation between fecundity and carapace length, (2) an increase in embryo volume along the embryonic development, and (3) loss of embryos along development. In addition, we investigated whether the esternite length and height and width of the pleura of the second abdominal somite were good predictors of fecundity. A total of 53 embryo-carrying individuals were collected in December 2016 and February 2017 in a tidal mudflat from the estuary of the Paripe River, Ilha de Itamaracá, Pernambuco, Brazil. The carapace length ranged from 3.23 to 4.64 mm (3.78 ± 0.26 mm). Among those, 25 individuals had embryos in initial stage, 5 in intermediate stage and 15 in final stage. Fecundity ranged from 14 to 67 (33.65 ± 12.51 embryos) and was weakly correlated with carapace length. However, fecundity was strongly correlated with the width of the second sternite and width of the pleura of the second abdominal somite. Embryo volume increased markedly (93%) from the initial to the final stage of development. This increase might be due to water uptake to facilitate the membrane rupture at the onset of larvae hatching. There was significant loss of embryos only between the initial and intermediate stage. Future studies on the embryo production by other species of Salmoneus Holthuis, 1955 are necessary to understand and compare these aspects of reproductive biology.

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Section: Discussioncontrasting

confidence: 93%

Section: Discussionmentioning

confidence: 78%

Section: Introductionmentioning

confidence: 89%

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Fecundity, embryo size and embryo loss in the estuarine shrimp Salmoneus carvachoi Anker, 2007 (Crustacea: Alpheidae) from a tidal mudflat in northeastern Brazil

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“…Females collected in the reproductive season were also larger in body size than those collected in the nonreproductive season, as well as having proportionally smaller claws. Female fecundity increases with female body size in Alpheid snapping shrimp (Corey & Reid, 1991;Costa-Souza, Rocha, Bezerra, & Almeida, 2014;Knowlton, 1980;Pavanelli, Mossolin, & Mantelatto, 2008,2010), suggesting that differential investment in growth of body size over claw size would be advantageous to females, especially coming into the reproductive season. Costs associated with reproduction may also limit investment in claw size during the reproductive season.…”

Section: Discussionmentioning

confidence: 99%

It takes two: Seasonal variation in sexually dimorphic weaponry results from divergent changes in males and females

Heuring

Hughes

2019

Ecology and Evolution

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Sexually dimorphic weaponry often results from intrasexual selection, and weapon size can vary seasonally when costs of bearing the weapon exceed the benefits outside of the reproductive season. Weapons can also be favored in competition over nonreproductive resources such as food or shelter, and if such nonreproductive competition occurs year‐round, weapons may be less likely to vary seasonally. In snapping shrimp ( Alpheus angulosus ), both sexes have an enlarged snapping claw (a potentially deadly weapon), and males of many species have larger claws than females, although females are more aggressive. This contrasting sexual dimorphism (larger weaponry in males, higher aggression in females) raises the question of whether weaponry and aggression are favored by the same mechanisms in males and females. We used field data to determine whether either sex shows seasonal variation in claw size such as described above. We found sexual dimorphism increased during the reproductive season due to opposing changes in both male and female claw size. Males had larger claws during the reproductive season than during the nonreproductive season, a pattern consistent with sexual selection. Females, however, had larger claws during the nonreproductive season than during the reproductive season—a previously unknown pattern of variation in weapon size. The observed changes in female weapon size suggest a trade‐off between claw growth and reproduction in the reproductive season, with investment in claw growth primarily in the nonreproductive season. Sexually dimorphic weaponry in snapping shrimp, then, varies seasonally due to sex differences in seasonal patterns of investment in claw growth, suggesting claws may be advantageous for both sexes but in different contexts. Thus, understanding sexual dimorphisms through the lens of one sex yields an incomplete understanding of the factors favoring their evolution.

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“…Pavanelli et al (2010) studied the effects of environmental conditions on the reproductive performance of different populations of Alpheus nuttingi (Schmitt, 1924). Costa-Souza et al (2014) studied the reproductive biology and heterosexual pairing of Alpheus estuariensis Christoffersen, 1984. Pescinelli, Davanso et al (2017Pescinelli, Pantaleão et al 2017), studied fecundity, social monogamy and described the early larval stages of Alpheus brasileiro Anker, 2012. Alpheus brasileiro belongs to the A. armillatus species complex and is endemic to the Brazilian coast.…”

Section: Introductionmentioning

confidence: 99%

Population structure, relative growth and morphological sexual maturity of the snapping shrimp Alpheus brasileiro Anker, 2012 (Caridea: Alpheidae) from the south-eastern coast of Brazil

Pescinelli

Almeida

Costa

2018

Marine Biology Research

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The present study investigated the population structure of the snapping shrimp Alpheus brasileiro. We tested the hypotheses that the sex ratio of the population differs from the expected 1:1 and that the growth pattern differs between adults and juveniles and between sexes. Reproductive period, juvenile recruitment and morphological sexual maturity were estimated. Samples were collected in two periods. The first sampling occurred bimonthly from March 2013 to January 2014. The second sampling occurred monthly from April 2015 to March 2016. The population structure was determined based on the size-frequency distribution of different demographic categories. To analyse the relative growth, we measured the second pleuron length, major cheliped propodus length, major cheliped propodus width, major cheliped propodus height, appendix interna length, appendix masculina length. The results showed that the sex ratio did not differ from 1:1 (male:female). Reproduction and juvenile recruitment were continuous throughout the study period. The analysis of relative growth confirmed the hypothesis that males and females, and juveniles and adults, have different growth patterns, indicating distinct strategies of energy allocation. The estimated carapace length at the onset of morphological sexual maturity was 4.9 mm in males and 4.7 mm in females. The results obtained in this study are probably related to the monogamous social behaviour of A. brasileiro. Monogamy can influence demographic parameters such as sex ratio and the size at which males and females reach morphological sexual maturity.

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Breeding and heterosexual pairing in the snapping shrimp Alpheus estuariensis (Caridea: Alpheidae) in a tropical bay in northeastern Brazil

Cited by 21 publications

References 46 publications

Fecundity, embryo size and embryo loss in the estuarine shrimp Salmoneus carvachoi Anker, 2007 (Crustacea: Alpheidae) from a tidal mudflat in northeastern Brazil

Fecundity, embryo size and embryo loss in the estuarine shrimp Salmoneus carvachoi Anker, 2007 (Crustacea: Alpheidae) from a tidal mudflat in northeastern Brazil

It takes two: Seasonal variation in sexually dimorphic weaponry results from divergent changes in males and females

Population structure, relative growth and morphological sexual maturity of the snapping shrimp Alpheus brasileiro Anker, 2012 (Caridea: Alpheidae) from the south-eastern coast of Brazil

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