Reproductive cycle of seabob shrimp<i>Xiphopenaeus kroyeri</i>(Crustacea, Penaeidea) from the northeast coast of Brazil

Lopes, Danilo Francisco Corrêa; Lucena‐Frédou, Flávia; Silva, Emanuell; Calazans, Nathalia; Peixoto, Sílvio

doi:10.1080/07924259.2017.1311951

Cited by 14 publications

(26 citation statements)

References 14 publications

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“…Also, a high degree of temporal overlap between both species and study areas is evident. Similar temporal dynamics were found for the seabob (Almeida et al, 2012;Lopes et al, 2017) and white shrimp (Santos et al, 2020) along the Brazilian coastline.…”

Section: Reproduction Dynamics and Its Interactions With Climatic Variabilitysupporting

confidence: 78%

Seasonal rainfall influences reproduction and recruitment of tropical penaeid shrimps: Implications to fisheries management

Barros

Júnior

Oliveira

et al. 2022

Fisheries Oceanography

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Here, we present results from a study conducted in two major shrimp fishing grounds in the Northeastern Brazil Marine Ecoregion (NBME) that determined reproductive dynamics of the penaeid shrimps Xiphopenaeus kroyeri and Penaeus schmitti. We aimed to verify if the current closed season is appropriate and untangle the environmental drivers that control their dynamics. The periods of recruitment and reproduction of both species overlap significantly, with a major spawning peak taking place in the dry season and recruitment in the wet season. The recruitment process in both species seem to be indirectly controlled by the onset of the rainfall season, which triggers an increase in primary productivity. This indirect effect also appears to affect growth increments positively. Our results suggest that both species evolved to recruit in the wet and spawn at the dry season as mechanisms to maximize reproductive fitness. They also highlight the possible negative influence of climate change in tropical shrimp stocks and that the current local regulations must be adjusted to better protect them from overfishing. Therefore, we present multiple possibilities to the closed fishing season (CFS) addressed to local decision-makers and reinforce that environmental parameters and effects of environmental changes should be considered when planning management measures.

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Section: Reproduction Dynamics and Its Interactions With Climatic Variabilitysupporting

confidence: 78%

Seasonal rainfall influences reproduction and recruitment of tropical penaeid shrimps: Implications to fisheries management

Barros

Júnior

Oliveira

et al. 2022

Fisheries Oceanography

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“…The reproductive condition of females was determined by macroscopic observation of the gonads, with the ovaries classified in respect with colour and size as previously indicated by several authors (Bauer & Lin, 1994; Nakagaki & Negreiros-Fransozo, 1998; Costa & Fransozo, 2004; Castilho et al , 2007a; Campos et al , 2009; Lopes et al , 2017). Females were classified into four development stages, according to their ovary development level: female with immature gonads (Stage I), with fine, transparent and small ovaries; females with spent gonads (Stage II), with transparent ovaries, but carapace length longer than the smallest Stage IV female; females with developing gonads (Stage III), with light green ovaries; females with developed gonads (Stage IV), with dark green, easily visible and voluminous ovaries.…”

Section: Methodsmentioning

confidence: 99%

Growth and population structure of the seabob shrimp Xiphopenaeus kroyeri (Decapoda: Penaeidae) on the continental shelf of Sergipe, Brazil

et al. 2018

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This study evaluated the population structure, growth and longevity of Xiphopenaeus kroyeri in the State of Sergipe. The obtained data were compared with other populations on a latitudinal scale in order to evaluate whether the latitudinal paradigm applies to this species. Shrimp sampling took place monthly from September 2013 to August 2014, in nine stations distributed at 5, 15 and 30 m depths, using a shrimp fishery boat equipped with a ‘double rig’ net. Sexual maturity was estimated by the logistic function y = a/(1 + b*exp(-cx)), and the sex ratio was analysed with the Chi-square test. The individual growth rate was estimated using the von Bertalanffy model, and the longevity was estimated by the inverse form of this formula. A total of 6418 (3457 females and 2961 males) was analysed. The size at onset of sexual maturity was 12 mm of carapace length (CL) for males and 12.5 mm CL for females. The total sex ratio did not differ from the expected (1:1). Males exhibited higher growth coefficients (k) and smaller asymptotic growth (CC∞ = 28.74 mm, k = 0.0081 day−1) than females (CC∞ = 30.79 mm, k = 0.0058 day−1). The estimated longevity (years) was 1.55 for males and 2.15 for females. No evident latitudinal pattern was observed regarding the size at onset of sexual maturity or the growth parameters for X. kroyeri. The information found, besides contributing to the knowledge about the biology of this shrimp, can also clarify hypotheses presented in relation to the latitudinal paradigm along the Brazilian coast.

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“…It is possible that the rainy season is able to influence peaks (Hoarau, 2018;Hoffman & Negreiros-Fransozo, 2010). Galvão and Bueno (2000) found out higher abundance of ovigerous females of A. scabra in the months that registrated the higher temperatures, while Lopes, Frédou, Silva, Calazans and Peixoto (2017) reported positive correlation between the percentage of mature females and temperature in the species Xiphopenaeus kroyeri Heller 1862, suggesting that this abiotic factor does influence reproductive peaks in caridean prawns. In this study, a different pattern was observed, which consisted in a higher abundance of ovigerous females in the months with lower temperatures.…”

Section: Discussionmentioning

confidence: 98%

Population biology and sexual dimorphism in the freshwater prawn Atya scabra (Decapoda: Atyidae) in the De Contas River, Bahia, Brazil

Barros

Calado

Santos

et al. 2020

RBT

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Abstract. Introduction: Crustaceans have economic and ecological importance and the role of caridean crustaceans in lentic environments is crucial to maintain the trophic structure. The species Atya scabra is occasionally associated with fisheries, especially in Northeast and Northern Brazil. Objective: To determine the population structure, reproductive period, patterns of growth and distribution of size classes among sexes in a population of the prawn A. scabra in the De Contas River, Bahia, Brazil. Methods: Individuals were sampled in a period of one year by passing sieves through marginal vegetation and using dragnets. In the laboratory, we recorded the sex of the individuals and measured them using a pachymeter with 0.001 mm precision. The dimensions measured were CL (carapace length), TL (total length) and CW (carapace width). In order to analyze data, linear models for the relationships CL × CW were constructed and the type of allometry for each sex was determined. Individuals were grouped into size classes of 5 mm intervals. A chi-square test (χ2) was used to test deviation from the 1:1 sex ratio. The proportion of ovigerous females was registered for each month to determine the breeding period. Results: A total of 517 individuals were collected, 328 were males and 186 females of which 169 were ovigerous. Males showed a polymodal distribution in size classes and were significantly larger than females, which presented a unimodal distribution in size classes. The observed growth patterns demonstrated that both sexes present negative allometry. However, sexual dimorphism was detected when comparing the growth parameters. Ovigerous females were sampled the entire year and size-frequency data demonstrated that recruitment also occurs throughout the year, which allowed us to classify their reproduction as continuous. Conclusions: Our data is essential to draw sustainable fishery management strategies. We suggest a minimum capture size of 70 mm and capture restrictions from May to August. Key words: ecology; freshwater; limnology; conservation; morphometry.

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Reproductive cycle of seabob shrimpXiphopenaeus kroyeri(Crustacea, Penaeidea) from the northeast coast of Brazil

Cited by 14 publications

References 14 publications

Seasonal rainfall influences reproduction and recruitment of tropical penaeid shrimps: Implications to fisheries management

Seasonal rainfall influences reproduction and recruitment of tropical penaeid shrimps: Implications to fisheries management

Growth and population structure of the seabob shrimp Xiphopenaeus kroyeri (Decapoda: Penaeidae) on the continental shelf of Sergipe, Brazil

Population biology and sexual dimorphism in the freshwater prawn Atya scabra (Decapoda: Atyidae) in the De Contas River, Bahia, Brazil

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