Size at morphological maturity of Ucides cordatus (Linnaeus, 1763) (Brachyura, Ocypodidae) in the Laranjeiras Bay, Southern Brazil

Dalabona, Glaucia; Silva, Jayme de Loyola e; Pinheiro, Marcelo Antônio Amaro

doi:10.1590/s1516-89132005000100018

Cited by 35 publications

(35 citation statements)

References 23 publications

(30 reference statements)

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“…The same growth pattern was observed for the other males' chelar variable; however, the chelae length was more evident, similar to data for the portunid Arenaeus cribrarius, analyzed by Pinheiro and Fransozo (1993) and U. cordatus by Dalabona et al (2005). According to Dalabona et al (2005), the major and minor males chelae show a different pattern in allometric growth rates.…”

Section: Discussionsupporting

confidence: 81%

“…However, these authors did not subject this biometric relationship data to statistical analyses that could recognize differences in allometric growth between the developmental phases. Dalabona et al (2005) studied this biometric relationship for this species, but were not observed a difference in growth rates during the ontogeny. This pattern was registered by these authors, probably due to the reduced number of individuals used in their biometric regression analyses.…”

Section: Discussionmentioning

confidence: 97%

“…According to Dalabona et al (2005), the major and minor males chelae show a different pattern in allometric growth rates. The major chela had the same allometry rates throughout the ontogeny, which was observed in the present study.…”

Section: Discussionmentioning

confidence: 99%

“…The biometric studies of U. cordatus have emphasized dimorphism of the chelae (Santos and Garcia-Mendes, 1982), or allometric growth of the carapace (Branco, 1993). Recently, Dalabona et al (2005) described the relative growth of this species from a mangrove area on southern Brazilian coast. Ontogeny in brachyurans is marked by morphological changes related to sex and puberty, which were first observed by Huxley (1924Huxley ( , 1950.…”

Section: Introductionmentioning

confidence: 99%

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Relative growth of the mangrove crab Ucides cordatus (Linnaeus, 1763) (Crustacea, Brachyura, Ocypodidae) at Iguape, São Paulo, Brazil

Pinheiro

Hattori

2006

Braz. arch. biol. technol.

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Section: Discussionsupporting

confidence: 81%

Section: Discussionmentioning

confidence: 97%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Relative growth of the mangrove crab Ucides cordatus (Linnaeus, 1763) (Crustacea, Brachyura, Ocypodidae) at Iguape, São Paulo, Brazil

Pinheiro

Hattori

2006

Braz. arch. biol. technol.

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“…Vários trabalhos têm sido realizados sobre diferentes aspectos da biologia da espécie, como o desenvolvimento larval (RODRIGUES & HEBLING, 1989), reprodução (MOTA ALVES, 1975;IVO & VASCONCELOS, 2000;HATTORI & PINHEIRO, 2003;PINHEIRO et al, 2003;DALABONA et al, 2005), fisiologia (MOTA ALVES & MADEIRA, 1980;HARRIS & SANTOS, 2000), ecologia (OLIVEIRA, 1946;MAIA & PENNA, 1982), bioecologia (ALCÂNTARA FILHO, 1978;COSTA, 1979;CASTRO, 1986;BRANCO, 1993;BLANKENSTEYN et al, 1995) e crescimento .…”

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Crescimento somático do caranguejo-uçá Ucides cordatus (Crustacea, Brachyura, Ocypodidae) em laboratório

Lima

Oshiro

2006

Iheringia, Sér. Zool.

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ABSTRACT. Somatic growth of the mangrove crab Ucides cordatus (Crustacea, Brachyura, Ocypodidae) in laboratory. In crustaceans, size increase occurs only immediately after molting when the animal is in the soft-shelled condition. The growth of Ucides cordatus (Linnaeus, 1763) was observed in laboratory, through its occurrence of molt, percentual increment of size and intermolt period. The study was realized from October/2000 to March/2002 and a total of 91 crabs (15 males, 33 females and 43 juveniles) were sampled in Itacuruçá -Coroa Grande mangrove, State of Rio de Janeiro, Brazil. The animals were maintained in two types of containers: adult crabs were kept in containers of 1000 l capacity, during eighteen months; while the juveniles were kept in plastic containers of 20 l capacity during eight months. The crabs were maintained in flowing seawater and fed on frozen leaves of Rhizophora mangle (L.) (Rhizophoraceae) and Laguncularia racemosa (Gaertn.) (Combretaceae), twice a week. The carapace width ranged from 50.1 to 70.0 mm in males, 40.2 to 80.0 mm to females and 1.1 to 40.1 mm to juveniles. The survival rate of the specimens studied was of 46.7% for males, 39.4% for females after eighteen months and 67.4% for juveniles after eight months. The males and females molted up to three times during the experiment, while the juveniles molted up twice. Molts occurred between August and April, showing more frequency during spring and summer. The increment of carapace width decreased with size, with mean was 2.21 ± 1.39% for males, 1.28 ± 0.84% for females and 2.89 ± 2.13% for juveniles. The relationship between the percentual increment and the carapace width can be expressed by the equation IM = -0.0707LC + 4.645 (r 2 = 0.40). The intermolt period was 191 ± 140 days for males, 216 ± 76.2 days for females and 54 ± 1.41 days for juveniles. The percentual increment of size was statistically significant (p<0,05) when compared males and females, and adults and juveniles.KEYWORDS. Somatic growth, crab, molting, increment, intermolt period.RESUMO. Em crustáceos, o aumento de tamanho ocorre imediatamente após a muda, quando o animal está com a carapaça mole. O crescimento de Ucides cordatus (Linnaeus, 1763) foi observado em laboratório, através da ocorrência de muda, incremento de muda e período de intermuda. O estudo foi realizado durante os meses de outubro/2000 a março/2002 e um total de 91 caranguejos (15 machos, 33 fêmeas e 43 juvenis) foi coletado no manguezal de Itacuruçá -Coroa Grande, Estado do Rio de Janeiro, Brasil. Os animais foram mantidos em dois tipos de tanques: os caranguejos adultos foram mantidos em tanques de 1000 l, durante 18 meses, enquanto os juvenis foram mantidos em tanques plásticos de 20 l de capacidade durante oito meses. Os animais foram mantidos em sistema aberto de circulação de água do mar e alimentados duas vezes por semana com folhas de Rhizophora mangle (L.) (Rhizophoraceae) e Laguncularia racemosa (Gaertn.) (Combretaceae). A largura da carapaça variou entre 50,1 a 70,0 mm nos machos, 40,2...

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Seasonal variations in the biochemical composition and reproductive cycle of the ghost crab Ocypode quadrata (Fabricius, 1787) in Southern Brazil

et al. 2010

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The ghost crab, Ocypode quadrata, is found on sandy beaches from the United States to Southern Brazil. Because there is still little information about the metabolism and reproduction of O. quadrata on the southern coast of Brazil, the objectives of this study were to (i) evaluate the effect of seasonal variations on the carbohydrate, lipid, and protein metabolism of O. quadrata at Rondinha Beach, a beach with high anthropogenic activity, and to compare it with data from Siriú Beach, which has less human activity; and (ii) describe the effect of seasonal variations on the histological characteristics of male and female gonads, in order to assess the reproductive capacity of the crabs. The gonads of male crabs showed no significant variations in the gonadosomatic index (GSI) and glycogen levels; however, histological analysis of the testes revealed that they are mature in the summer. In females, the GSI and glycogen values are higher in summer, concomitantly with the presence of mature oocytes. These results suggest that the reproductive peak of O. quadrata occurs in summer. The seasonal analysis of the biochemical parameters, as well as comparison with Siriú Beach, demonstrated that the ghost crabs of Rondinha Beach have a different pattern of metabolism than those of Siriú. This difference may be a consequence of differences in the environmental conditions as well as in the anthropogenic pressures, such as vehicle traffic and the increase in human population at the beach in summer.

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Size at morphological maturity of Ucides cordatus (Linnaeus, 1763) (Brachyura, Ocypodidae) in the Laranjeiras Bay, Southern Brazil

Abstract: ABSTRACT

Cited by 35 publications

References 23 publications

Relative growth of the mangrove crab Ucides cordatus (Linnaeus, 1763) (Crustacea, Brachyura, Ocypodidae) at Iguape, São Paulo, Brazil

Relative growth of the mangrove crab Ucides cordatus (Linnaeus, 1763) (Crustacea, Brachyura, Ocypodidae) at Iguape, São Paulo, Brazil

Crescimento somático do caranguejo-uçá Ucides cordatus (Crustacea, Brachyura, Ocypodidae) em laboratório

Seasonal variations in the biochemical composition and reproductive cycle of the ghost crab Ocypode quadrata (Fabricius, 1787) in Southern Brazil

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