Reproductive pattern comparison of Uca thayeri Rathbun, 1900 and U. uruguayensis Nobili, 1901 (Crustacea, Decapoda, Ocypodidae)

Costa, Tânia Márcia; Silva, Stella Maris Januário; Negreiros-Fransozo, Maria Lúcia

doi:10.1590/s1516-89132006000100014

Cited by 29 publications

(24 citation statements)

References 16 publications

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“…Although the population studied in Samborombón Bay has a high density (César et al, 2005), the fact of having collected a low number of ovigerous females could be due to a differential behaviour during this incubation period. Costa et al (2006) captured the ovigerous females very deep in their burrows and suggested that this species would not feed during this period. On the other hand, U. uruguayensis presented continuous reproduction throughout the year in the north limit of its distribution (Brazil), while in the south (the population here studied in Samborombón Bay and the one studied by Spivak et al, 1991 Table 2.…”

Section: Discussionmentioning

confidence: 99%

“…Thus, in the Uca species from intertidal brackish environments, such as U. triangularis (Milne-Edwards, 1873), U. annulipes (Milne-Edwards, 1837) and U. rapax (Smith, 1870), fecundity varied among 3390, 6400 and 28500 eggs/brood respectively, being their average sizes 9.6, 11.3 and 15.8 mm of carapace width (Thurman, 1985). On the other hand, the population of U.uruguayensis studied by Costa et al (2006) in Ubatuba, Brazil, presented a lower fecundity (mean fecundity: 1883 ± 490 eggs) than the population here studied, which is related to the smaller size in the ovigerous females captured (C.W = 6.6 ± 0.8 mm).…”

Section: Uca Uruguayensismentioning

confidence: 99%

“…The reproductive aspects and fecundity in brachyurans from the Neotropical region has been treated for different families, among them Portunidae (Mantelatto and Fransozo, 1997), Grapsidae and Varunidae (Spivak et al, 1996;Luppi et al, 1997;Conde et al, 2000;Leme, 2002Leme, , 2004, and Ocypodidae (Spivak et al, 1991;Costa et al, 2006). These papers refer mostly to Brazil and the Mar Chiquita Lagoon (Argentina).…”

Section: Introductionmentioning

confidence: 99%

“…These papers refer mostly to Brazil and the Mar Chiquita Lagoon (Argentina). From them it can be appreciated that reproductive aspects are adaptive processes intimately related with environmental conditions, such as latitude, temperature, larval food availability, giving a single species a continuous reproduction in tropical areas of its distribution and a seasonal one in the temperate zones (Spivak et al, 1991;César et al, 2005;Costa et al, 2006). Dana, 1851 (Varunidae) and Uca uruguayensis (Nobili, 1901) (Ocypodidae) are two endemic species of crabs recorded in the template biogeographic region of the southwestern Atlantic Ocean.…”

Section: Introductionmentioning

confidence: 99%

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Fecundity of Uca uruguayensis and Chasmagnathus granulatus (Decapoda, Brachyura) from the "Refugio de Vida Silvestre" Bahía Samborombón, Argentina

2007

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The aim of the present work conducted at the Refugio de Vida Silvestre Bahía Samborombón is to analyse the most relevant aspects of the fecundity of Chasmagnathus granulatus and Uca uruguayensis. Samplings were carried out from March 2001 to February 2003. Ovigerous females of U. uruguayensis (N = 13) and C. granulatus (N = 25) were found during spring and summer, their sizes (CW) varied from 9.1 to 11.7 mm for the former species and from 22.8 to 32.4 mm for the latter. The egg diameter in U. uruguayensis ranged from 245 to 260 µm for embryos in the early stage of development and from 250 to 345 µm for those in mid-developmental stage, while in C. granulatus from 250 to 345 µm and from 260 to 365 µm respectively. Fecundity varied from 1126 to 6745 eggs/brood in U. uruguayensis and 15688-57418 eggs/brood in C. granulatus. For those females with broods in mid-developmental stage, several relationships were made. For U. uruguayensis the best correlation coefficients were obtained for the relationships: female weight vs. egg mass weight and carapace width vs. egg mass weight; for C. granulatus the best association was obtained between female size and the egg number and the egg mass weight.Keywords: fecundity, Uca uruguayensis, Chasmagnathus granulatus, Argentina. Fecundidade deUca uruguayensis e Chasmagnathus granulatus (Decapoda, Brachyura) no "Refúgio de Vida Silvestre" Bahía Samborombón, Argentina Resumo O objetivo do presente trabalho foi analisar os aspectos mais relevantes da fecundidade de Chasmagnathus granulatus e Uca uruguayensis no Refúgio da Vida Silvestre Bahia Samborombón. As amostragens foram realizadas de março de 2001 a fevereiro de 2003. As fêmeas ovígeras de U. uruguayensis (N = 13) e de C. granulatus (N = 25) foram capturadas na primavera e verão. A largura da carapaça (LC) de U. uruguayensis variou de 9.1 a 11.7 mm, e de 22.8 a 32.4 mm para C. granulatus. O diâmetro dos ovos de U. uruguayensis variou de 245 a 260 µm para embriões em estágio de desenvolvimento inicial e de 250 a 345 µm para aqueles em estágio intermediário; para C. granulatus as variações foram de 250 a 345 µm e de 260 a 365 µm, respectivamente. A fecundidade de U. uruguayensis variou de 1126 a 6745 ovos/desova e para C. granulatus de 15688 a 57418 ovos/desova. Para as fêmeas com massa de ovos em estágio de desenvolvimento intermediário foram efetuadas várias relações: para U. uruguayensis os melhores coeficientes de correlação foram obtidos nas relações: peso da fêmea vs. peso da massa de ovos, e largura da carapaça vs. peso da massa de ovos. Para C. granulatus, a melhor associação foi obtida entre o número de ovos e o peso da massa de ovos.

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Section: Discussionmentioning

confidence: 99%

Section: Uca Uruguayensismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Fecundity of Uca uruguayensis and Chasmagnathus granulatus (Decapoda, Brachyura) from the "Refugio de Vida Silvestre" Bahía Samborombón, Argentina

2007

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“…Only a few aspects of their population biology and the occurrence of parasites have been reported (Spivak et al, 1991;Costa et al, 2006). The present study compared SOM between two populations of U. uruguayensis from different geographical regions (Brazil and Argentina).…”

Section: Introductionmentioning

confidence: 88%

Comparison of body size, relative growth and size at onset sexual maturity ofUca uruguayensis(Crustacea: Decapoda: Ocypodidae) from different latitudes in the south-western Atlantic

et al. 2012

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Some crustaceans show variations of their reproductive biology within their geographical distribution, and knowledge about such variations is important for the comprehension of their reproductive adaptations. This study compared two populations of the fiddler crab Uca uruguayensis from two locations on the south-western Atlantic coast: Ubatuba Bay, São Paulo, Brazil and Samborombón Bay, Buenos Aires, Argentina. The population features analysed were the body size variation (carapace width ¼ CW) and the size at the onset of sexual maturity (SOM) in order to test the hypothesis that the size at SOM, should be the same in relative terms (RSOM), independently of the latitudinal position. In the Brazilian population the CW ranged from 4.18 to 11.60 mm for males and 3.90 to 9.80 mm for females, and in the Argentinean population from 3.60 to 14.10 mm for males and 2.85 to 12.00 mm for females. In the Brazilian population the SOM was 7.1 (RSOM ¼ 0.58) and 5.9 mm CW (RSOM ¼ 0.57) for males and females, respectively, and in the Argentinean population it was 7.0 (RSOM ¼ 0.42) and 6.75 mm CW (RSOM ¼ 0.53) for males and females, respectively. This fact is probably related to a great plasticity in the life history features of Uca uruguayensis under different environmental conditions.

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Comparative Burrow Architectures of Resident Fiddler Crabs (Ocypodidae) in Indian Sundarban Mangroves to Assess Their Suitability as Bioturbating Agents

Sen

Homechaudhuri

2016

Proc Zool Soc

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Reproductive pattern comparison of Uca thayeri Rathbun, 1900 and U. uruguayensis Nobili, 1901 (Crustacea, Decapoda, Ocypodidae)

Abstract: ABSTRACT

Cited by 29 publications

References 16 publications

Fecundity of Uca uruguayensis and Chasmagnathus granulatus (Decapoda, Brachyura) from the "Refugio de Vida Silvestre" Bahía Samborombón, Argentina

Fecundity of Uca uruguayensis and Chasmagnathus granulatus (Decapoda, Brachyura) from the "Refugio de Vida Silvestre" Bahía Samborombón, Argentina

Comparison of body size, relative growth and size at onset sexual maturity ofUca uruguayensis(Crustacea: Decapoda: Ocypodidae) from different latitudes in the south-western Atlantic

Comparative Burrow Architectures of Resident Fiddler Crabs (Ocypodidae) in Indian Sundarban Mangroves to Assess Their Suitability as Bioturbating Agents

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