Comparação do crescimento entre Callinectes sapidus (Crustacea, Decapoda, Portunidae) coletados em campo e mantidos em condições contoladas

Rodrigues, Marcos Alaniz; D’Incao, Fernando

doi:10.1590/s0073-47212008000300012

Cited by 13 publications

(7 citation statements)

References 10 publications

(5 reference statements)

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“…This species is sympatric with C. danae and attains a greater CW (16.2 cm, according to Rodrigues and D´Incao, 2008). Thus, the minimum CW for C. danae can be lower than 12.0 cm, but the fisherman must be skilled to distinguish between the two species of swimming crabs.…”

Section: Discussionmentioning

confidence: 99%

Sexual maturity and reproductive period of the swimming blue crab Callinectes danae Smith, 1869 (Brachyura: Portunidae) from Guaratuba Bay, Paraná State, southern Brazil

et al. 2013

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-This work aims to estimate the average size at the onset of morphological and physiological sexual maturity and the reproductive period of Callinectes danae. Specimens were captured from a shrimp fishing boat equipped with a trawl net from March 2009 to February 2010. After sorting, crabs were sexed, and the following morphometric dimensions were measured: carapace width (CW), length and height of the major (MAP and HMAP), and the minor cheliped propodus (MIP and HMIP) for both sexes, and the abdominal width for females (AW). The onset of morphological maturity was estimated with the REGRANS program, in which the inflection point is calculated. The size at the onset of physiological maturity was determined by logistic regressions fitted to the relationships between the percentages of juvenile and adult individuals of each CW. A total of 893 individuals were sampled. Of these individuals, 389 were males, 472 non-ovigerous females, and 32 ovigerous females. The CW ranged from 19.81 to 117.17 mm for males, 19.91 to 113.11 mm for non-ovigerous females, and 70.55 to 88.60 mm for ovigerous females. Morphological sexual maturity was attained at 86.47 mm CW (males) and 67.87 mm CW (females). The size at the onset of physiological maturity was calculated to be 86.50 mm CW (males) and 67.00 mm CW (females). Due to the closeness of these values, both techniques were deemed suitable for determination of the onset of sexual maturity in C. danae. This species reproduces throughout the year, but reproduction is more intense during the winter. Mature males are present throughout the year. Data from this investigation will help resource managers to develop strategies that will ensure a sustainable harvest of this important species of swimming crab in southern Brazil.

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“…A hypothesis for the difference between the increase per molt of wild and reared C. danae individuals could be that that the reared individuals were subjected to space limitations, reproductive activity restrictions and contacts with other specimens. In addition, Rodrigues and D'Incao () mentioned that older reared crabs were smaller due to the stress suffered by captivity; Luppi et al. () reported that growth curves for reared individuals yielded an underestimation of the actual maximum size of Chasmagnathus granulatus ; and González‐Gurriarán et al.…”

Section: Discussionmentioning

confidence: 99%

Comparative study of the molting cycle of wild and reared swimming crabs Callinectes danae (Crustacea: Portunidae)

2013

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Specimens of Callinectes danae Smith 1869 were caught in northeastern Brazil (2178 males, 2031 females); of these, 24 males and 24 females were reared for 6 months. Water temperature (T) and salinity (S) showed a significant effect on the average ecdysis in wild crab (l), with a model obtained that was: l = exp(À0.12268T + 0.06148S)/(1 + exp(À0.12268T + 0.06148S)). Size at morphometric maturity was significantly larger for wild males and females (9.45 and 8.38 cm, respectively) than for reared individuals (8.95 and 7.93 cm). Females of sizes above CW 50 (carapace width at maturation) showed an increased ecdysis activity, whereas males showed a decrease in ecdysis frequency in sizes over CW 50 . Five and six molts were observed for females and males, respectively, in both wild and reared crabs; the modal classes of the reared crabs were shifted to smaller sizes. In reared females the terminal-pubertal molt occurred at 107 days of age and at 148 days, on average, in males. The intermolt period varied from 8 to 41 days and increased with age.U.S.

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“…Nauplius, 29: e2021001 discussion Maximum longevity was estimated at 3.5 years. At first, this estimate could be considered high as larger brachyurans living in the same estuary have lower maximum longevities (Neohelice granulata (Dana, 1851), 2 years, maximum CW 38 and 27.2 mm for males and females); Callinectes sapidus Rathbun, 1896, 3 years, maximum CW 136.30 and 132.70 mm for males and females) (D'Incao et al, 1993;Rodrigues and D'Incao, 2008). The average lifespan of brachyurans was estimated at 5.6 years, with a general trend of the largest species having the longest life spans, while the smallest species have lifespans between one and two years (Vogt, 2019), which suggests R. harrisii has indeed a longer maximum longevity than expected.…”

Section: Growth and Mortality Of Rhithropanopeus Harrisiimentioning

confidence: 99%

Individual growth and mortality of Rhithropanopeus harrisii (Decapoda: Panopeidae) in the estuarine region of Patos Lagoon, Southern Brazil

Rodrigues

Fonseca

2021

Nauplius

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The present investigation aimed to estimate the individual growth and mortality of an invasive species found in the estuarine region of Patos Lagoon (Southern Brazil). For 20 months crabs were sampled, and in the laboratory specimens of Rhithropanopeus harrisii (Gould, 1841) were measured (carapace width, CW, and weight). Carapace width data was utilized for a modal progression analysis and to estimate the individual growth curve (von Bertalanffy growth model), and a size-converted catch curve. Von Bertalanffy parameters estimated were CW ∞ = 16.92 mm and k = 1.28 year-1. Maximum longevity was estimated at 3.5 years. Instantaneous total mortality was estimated at 2.17 ± 0.30 year-1. It has been suggested that longevity may be explained by a low predation impact on R. harrisii, which, as a consequence, may lead to slow individual growth of this species in the estuarine region of Patos Lagoon.

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“…The pink shrimp Farfantepenaeus paulensis (Pérez Farfante, 1967) and the blue crab Callinectes sapidus Rathbun, 1896 are estuarine during part of their life cycle, i.e., post-larvae and juvenile pink shrimp and the stages of zoea, megalopa, juvenile and adult of the blue crab (Hines et al, 1987;Bulger et al, 1995;D'Incao, 1991;Costa et al, 2008;Rodrigues and D'Incao, 2008;Vieira and Calazans, 2010;Rodrigues and D'Incao, 2014). The entry of these organisms into estuaries follows the patterns observed in other species of penaeids and also blue crabs from other coastal regions (D'Incao, 1991;Lhomme, 1992;Bulger et al, 1995;Epifanio, 2007;Cházaro-Olvera et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Habitat selection of the pink shrimp Farfantepenaeus paulensis and the blue crab Callinectes sapidus in an estuary in southern Brazil: influence of salinity and submerged seagrass meadows

et al. 2014

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-This study was conducted in two estuarine inlets (Saco da Mangueira and Saco do Arraial) at the Patos Lagoon estuary, southern Brazil. The changes in relative abundance and size of post-larvae and juvenile shrimp Farfantepenaeus paulensis and juvenile blue crab Callinectes sapidus were compared, considering the influence of salinity and the presence of submerged seagrass meadows. The analyses were performed using generalized linear models (GLM) for abundance variations and ANOVA for variations on the size of individuals. The pink shrimp was more abundant at Saco da Mangueira, in seagrass meadows and areas of higher salinity. The blue crab was more abundant at Saco do Arraial and in lower levels of salinity. The importance of submerged vegetation for the blue crab lies in a preference of smaller crabs of the species for the seagrass meadows. It has been shown that these species choose different habitats in the estuary, and both the salinity and the presence of submerged seagrass meadows influence the selection of habitat.

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“…É uma espécie eurialina hiperosmorreguladora que habita os estuários e regiões oceânicas adjacentes em fundos lamosos e arenosos, sendo mais frequentemente encontrados em até 35 m de profundidade (WilliamS, 1974). A longevidade do siri-azul na Lagoa dos Patos foi estimada em 3,45 anos (fêmeas) e 3,50 anos (machos) (roDrigueS & D'incao, 2008). De acordo com WilliamS (1984), os indivíduos realizam de 18 a 22 mudas durante a vida.…”

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Modelagem de ocorrência e densidade de juvenis de Callinectes sapidus (Decapoda, Portunidae) em dois estuários do Rio Grande do Sul, com dados zero-inflacionados

Martins

Rodrigues

Kinas

2014

Iheringia, Sér. Zool.

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ABSTRACT. Occurrence and density modeling of juvenile Callinectes sapidus (Decapoda, Portunidae) in two estuaries in Rio Grande do Sul state, with zero-inflated data. Zero-inflated counting data of juvenile blue crabs (Callinectes sapidus Rathbun, 1896) collected in two estuaries of Rio Grande do Sul are the object of the present study. These data led to the formulation of hierarchical models that quantify the effect of categorical covariates months and location on the probability of occurrence and density of these populations, taking imperfect detection into account. Nonhierarchical models were also developed for comparison. A Bayesian approach was adopted for estimating model parameters using the Markov Chain Monte Carlo (MCMC) simulation technique. Model comparison was performed according to the Deviance Information Criterion (DIC). Hierarchical models resulted in better fits than conventional ones, mitigated the problem of excess zeros and allowed for simultaneous analysis of the probability of occurrence and the density of juvenile blue crab. The probability of occurrence of Class 2 juveniles in the Lagoa dos Patos estuary increases at larger distance from the mouth while in Tramandaí the occurrence is more likely for intermediate distances. In both estuaries the occurrence is more likely in the summer and winter months. Regarding density of Class 2 juveniles, there is marked variation among the months of the year; and is overall higher in the Tramandaí estuary. KEYWORDS.Blue crab, abundance, Bayesian inference, hierarchical models, stochastic simulation. RESUMO. Dados de contagem de juvenis de siri-azul (Callinectes sapidus Rathbun, 1896) coletados em dois estuários do Rio Grande do Sul sãoobjeto do presente estudo. Por se encontrarem zero-inflacionados, esses dados motivaram a formulação de modelos hierárquicos, que quantificam o efeito das covariáveis categóricas mês e local sobre a probabilidade de ocorrência e densidade dessas populações, levando em conta a detecção imperfeita. Foram também desenvolvidos modelos não-hierárquicos para comparação. Uma abordagem Bayesiana foi adotada para a estimação dos parâmetros dos modelos por simulação Monte Carlo com Cadeias de Markov (MCMC). A comparação entre modelos foi feita com o Critério de Informação da Deviância (DIC). Os modelos hierárquicos apresentaram ajustes melhores que os modelos convencionais, mitigaram o problema do excesso de zeros e permitiram analisar simultaneamente as probabilidades de ocorrência e a densidade de juvenis de siri-azul. No estuário da Lagoa dos Patos, a probabilidade de ocorrência de juvenis na Classe 2 aumenta com a distância da desembocadura, enquanto em Tramandaí os pontos intermediários apresentam as maiores probabilidades. Em ambos os estuários a ocorrência é mais provável nos meses de verão e de inverno. A densidade de juvenis da Classe 2 apresenta marcada variação em relação aos meses do ano sendo, em geral, maior no estuário de Tramandaí. PALAVRAS-CHAVE.Siri-azul, abundância, modelos hierárquicos, inferência Bayesiana, si...

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Comparação do crescimento entre Callinectes sapidus (Crustacea, Decapoda, Portunidae) coletados em campo e mantidos em condições contoladas

Cited by 13 publications

References 10 publications

Sexual maturity and reproductive period of the swimming blue crab Callinectes danae Smith, 1869 (Brachyura: Portunidae) from Guaratuba Bay, Paraná State, southern Brazil

Comparative study of the molting cycle of wild and reared swimming crabs Callinectes danae (Crustacea: Portunidae)

Individual growth and mortality of Rhithropanopeus harrisii (Decapoda: Panopeidae) in the estuarine region of Patos Lagoon, Southern Brazil

Habitat selection of the pink shrimp Farfantepenaeus paulensis and the blue crab Callinectes sapidus in an estuary in southern Brazil: influence of salinity and submerged seagrass meadows

Modelagem de ocorrência e densidade de juvenis de Callinectes sapidus (Decapoda, Portunidae) em dois estuários do Rio Grande do Sul, com dados zero-inflacionados

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