Latitudinal Variation in Population Structure and Reproductive Pattern of the Endemic South American Shrimp Artemesia Longinaris (Decapoda: Penaeoidea)

Castilho, Antônio Leão; Gavio, María Andrea; Costa, Rogério Caetano da; Boschi, Enrique E.; Bauer, Rayniond T.; Fransozo, Adílson

doi:10.1651/s-2788.1

Cited by 86 publications

(83 citation statements)

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“…Based on the results found in this study and on the comparison with the studies mentioned above, the hypothesis proposed by Bauer (1992) and corroborated by Castilho et al (2007a) cannot be confirmed. These authors state that the body size and sexual maturity of females are smaller in tropical regions and increase toward higher latitudes (temperate regions).…”

Section: Discussioncontrasting

confidence: 79%

“…The region of Macaé is located near an upwelling area, which reduces the average annual temperature to values lower than those found by Castilho et al (2007aCastilho et al ( , b, 2008 in tropical and subtropical regions like São Paulo State coast. Such parameter is probably the reason why the recorded CL values in this study were higher than the ones found in São Paulo State coast, and similar to the ones from the Argentinean coast.…”

Section: Discussionmentioning

confidence: 73%

“…The values were higher than those found by Castilho et al (2007b), Costa et al (2010) and Dumont and D'Incao (2008), in the latitudes of 23° S, 27° S and 32° S, respectively. However, at higher latitudes of South American (Argentina) those values become higher again, according to Castilho et al (2007a) (37° S) and Boschi and Mistakidis (1966) (43° S) (Table 3).…”

Section: Discussionmentioning

confidence: 94%

“…Moreover, A. longinaris was characterized by sexual dimorphism according to size, considering that females showed larger lengths than males. According to Boschi (1969b) and Gab-Alla et al (1990), differences in body size regarding sexes are a general rule among penaeid shrimps, because larger females may be under selective pressure to increase egg production Castilho et al, 2008) Bauer (1992) and Castilho et al (2007a) suggest that the life style, size at sexual maturity, growth and longevity in penaeids vary according to the structuring of environmental factors in each latitudinal gradient mostly influenced by water temperature, nutrient availability, and consequently the oceanic primary productivity. The proposed pattern is that as latitude increases, reproductive periodicity tends to decrease, and size at sexual maturity and longevity tends to increase.…”

Section: Discussionmentioning

confidence: 99%

“…Furthermore, one of the main aims of reproductive ecology studies of benthic invertebrates is to evaluate the tendencies of geographical and temporal variations on the reproductive and juvenile recruitment activity (Bauer, 1992;Costa and Fransozo, 2004). These studies are essential to implement sustainable fishery techniques, especially because reproductive patterns can differ according to distinct environmental conditions among geographical latitudes (Bauer, 1992;Castilho et al, 2007a).…”

Section: Introductionmentioning

confidence: 99%

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Population biology of the commercially exploited shrimp Artemesia longinaris (Decapoda: Penaeidae) in an upwelling region in the Western Atlantic: comparisons at different latitudes

et al. 2015

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This study characterized the population biology of the dendrobranchiate penaeid shrimp Artemesia longinaris Spence Bate, 1888, focusing on population structure, sexual maturity, reproductive period and recruitment, and comparing reproductive parameters of a different populations along western South Atlantic..Samples were collected monthly from March, 2008 to February, 2010 in Macaé, northern coast of Rio de Janeiro State, Brazil, a region influenced by the Cabo Frio upwelling. There was a significantly higher percentage of females and with larger sizes than males. Both carapace length and sexual maturity in Macaé were similar to the dimensions found in populations in the South of the continent (Argentina). Reproductive females were present in all months, with main peaks during winter and summer. Recruitment was also continuous, with peaks, usually one to two months after the appearance of reproductive females, after the reduction of the bottom temperature values of water. These data suggest that November to January would be the appropriate months for legal off-season, due to the higher intensity of spawning females and juveniles during this period. A comparação latitudinal dos parâmetros reprodutivos, não confirma o paradigma de que tamanho do corpo e a maturidade sexual das fêmeas são menores em regiões tropicais e aumentam em direção às maiores latitudes, reforçando a hipótese da influência e importância da ACAS na dinâmica reprodutiva de A. longinaris na região The results of this study contribute to the understanding of the biology of A. longinaris, and could also be a reference to monitor this important fishery resource and consequent legal off-season. Furthermore, this population located at the northern limit of the species distribution is a source of highly relevant comparison for population studies in other areas.Keywords: Dendrobranchiata, sex ratio, recruitment, reproductive biology, shrimp fishery. Biologia populacional do camarão explorado comercialmente

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Section: Discussioncontrasting

confidence: 79%

Section: Discussionmentioning

confidence: 73%