Isolation and characterization of microsatellites in three overexploited penaeid shrimp species along the Brazilian coastline

Francisco, Ana Karina de; Pinheiro, Allysson Pontes; Silva, Thiago Buosi; Galetti, Pedro Manoel

doi:10.1007/s10592-008-9570-9

Cited by 9 publications

(7 citation statements)

References 15 publications

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“…The relative long larval period reported for this species (~16 d; Fransozo et al 2009b) supports the idea of considerable connectivity among distantly located populations hundreds and thousands of km apart. The study of meso-scale oceanographic processes (Cowen et al 2000) and the phylogeography of Xiphopenaeus kroyeri along the Brazilian coast (Voloch & Solé-Cava 2005, Gusmão et al 2006, Francisco et al 2009) might help to reveal the extent of connectivity among populations, that in turn, will help guide the establishment of sound management strategies in this widely distributed species. …”

Section: Reproductive Biology and Recruitment In An Mpamentioning

confidence: 99%

Reproductive biology and recruitment of Xiphopenaeus kroyeri in a marine protected area in the Western Atlantic: implications for resource management

Almeida¹,

Baeza²,

Fransozo³

et al. 2012

Aquat. Biol.

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The potential of a recently established marine protected area (MPA) in the Western Atlantic, Brazil, as a 'seed production' and nursery ground for Xiphopenaeus kroyeri, an intensively exploited penaeid shrimp, was investigated in an attempt to reveal any future benefit of this new MPA to adjacent populations experiencing heavy exploitation. Overall, we observed that males and females >12 and 20 mm carapace length, respectively, contributed the most to reproduction in the studied population. Reproductive activity of X. kroyeri was continuous at the MPA; 2 annual reproductive peaks were recorded from March to April and from November to December, which were followed by recruitment events occurring from March to April 2009 and November 2009. Sediment, temperature, and algae and plant biomass floating near the bottom were relevant in driving reproductive activity and recruitment in X. kroyeri. The high reproductive potential of the studied population and the occurrence of abundant juveniles throughout the sampling area, indicating the existence of a nursery ground within the region, suggest that this MPA might provide important benefits in the near future. We argue in favor of future long-term studies on the larval dispersion, reproductive biology and ecology of X. kroyeri in MPAs and non-MPAs to construct a base for future management of this species and to aid stock recovery in fishing areas that are heavily exploited. KEY WORDS: Marine protected area · Xiphopenaeus kroyeri · Size at first maturity · Reproductive potential · Nursery ground · Environmental parameters · Stock recoveryResale or republication not permitted without written consent of the publisher Aquat Biol 17: 57-69, 2012 from 6 000 t in the 1960s to 42 787 t in the 2000s (FAO 2011). From 1960 to 2009, 513 785 t (~51%) of the total global catch (1 013 993 t) was extracted from the Brazilian coast (FAO 2011).In the northern, northeastern, southeastern and southern regions of the Brazilian coast, which were described by Matsuura (1995) as the major fishing grounds, the seabob shrimp is heavily exploited by trawl fishing boats (Vasconcellos et al. 2007(Vasconcellos et al. , 2011. Vasconcellos et al. (2007) collected information about the status of stocks of Xiphopenaeus kroyeri based on the analysis of time-series landings by artisan fisheries during the period 1980 to 2002. These authors categorized the status of this shrimp as underexploited in the northern region, moderately exploited in the northeastern region, and overexploited in the southeastern and southern regions of Brazil. Furthermore, X. kroyeri is classified as overfished by the Brazilian government because of the high capture rates of specimens from most or all size/ age classes throughout the range of distribution of this species along the coast of Brazil (Ministry of the Environment, Normative Instruction 5, 21 May 2004).Due to overexploitation in the southeastern and southern regions, the stocks of Xiphopenaeus kroyeri have presented a continuous decrease in landings since th...

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Section: Reproductive Biology and Recruitment In An Mpamentioning

confidence: 99%

Reproductive biology and recruitment of Xiphopenaeus kroyeri in a marine protected area in the Western Atlantic: implications for resource management

Almeida¹,

Baeza²,

Fransozo³

et al. 2012

Aquat. Biol.

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“…Its fishing yields are declining and, in some regions, it is considered to be an overfished species already (Geo Brasil, 2002;MMA & IBAMA, 2008;Francisco et al, 2009). Thus, this work presents information about this species' growth and recruitment in coastal waters of Rio de Janeiro State, southeastern Brazil, in order to evaluate this fishing resource and the current fishing regulation, which is designed to maintain the shrimp populations at sustainable levels of exploitation by commercial fisheries.…”

Section: Introductionmentioning

confidence: 99%

Growth and Recruitment of the Atlantic Seabob Shrimp, Xiphopenaeus kroyeri (Heller, 1862) (Decapoda, Penaeidae), on the Coast of Rio De Janeiro, Southeastern Brazil

Jardim

Fernandes

Beneditto

et al. 2011

Crustac

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The objective of this study was to analyse the population growth of the Atlantic seabob shrimp, Xiphopenaeus kroyeri (Heller, 1862) and to establish its recruitment period in the northern part of the State of Rio de Janeiro, southeastern Brazil. Monthly samples of the species were collected over four years (2005-06, 2006-07, 2008-09, and 2009-10) through local artisanal fishery. The size of males and females varied from 25.0 to 134.0 mm and 33.0 to 146.0 mm in total length, 6.0 to 30.0 mm and 5.0 to 33.0 mm in carapace length, and 0.3 to 13.8 g and 0.2 to 17.4 g in weight, respectively. The total weight-length relationship was adjusted with the equations W = 0.000008TL 2.9038 (R 2 = 0.9446) (males) and W = 0.000002TL 3.1719 (R 2 = 0.9499) (females). The Von Bertalanffy growth function TL t = TL ∞ (1 − exp −k(t−t 0 ) ) was applied to the data, and the average asymptotic lengths (TL ∞ ) and growth rates (k) were 134.4 ± 6.2 mm and 1.93 ± 0.3 mm for males, and 148.8 ± 3.6 mm and 1.65 ± 0.05 mm for females. The species' average longevity was 2.5 years for males and 2.8 years for females. Males are considered mature when their reach a total length of 66.0 mm and a carapace length of 12.0 mm, while females mature with 109.0 mm total length and 22.0 mm carapace length. In general, the species' recruitment occurred from June to August and from January to May, which partially supports the current legislation to maintain this fishery resource in the region. RESUMOO objetivo deste estudo foi analisar o crescimento populacional do camarão sete barbas, Xiphopenaeus kroyeri (Heller, 1862), capturado no norte do Rio de Janeiro, Brasil, e inferir sobre o período de recrutamento na região. As amostras mensais da espécie foram obtidas durante quatro anos (machos e fêmeas variou de 25,0 a 134,0 mm e 33,0 a 146,0 mm em comprimento total, 6,0 a 30,0 mm e 5,0 a 33,0 mm em comprimento da carapaça e 0,3 a 13,8 g e 0,2 a 17,4 g em peso, respectivamente. A relação entre peso e comprimento total foi ajustada através das equações P = 0,000008CT 2,9038 (R 2 = 0,9446) (machos) e P = 0,000002CT 3,1719 (R 2 = 0,9499) (fêmeas). A função de crescimento de Von Bertalanffy: CT t = CT ∞ (1 − exp −k(t−t 0 ) ) foi aplicada aos dados e a média do comprimento assintótico (CT ∞ ) e da taxa de crescimento (k) no período de estudo foi 134,4 ± 6,2 mm e 1,93 ± 0,3 mm (machos) e 148,8 ± 3,6 mm e 1,65 ± 0,05 (fêmeas). A longevidade média da espécie foi estimada em 2,5 anos para machos e 2,8 anos para fêmeas. Os machos atingem a primeira maturação gonadal com 66,0 mm de comprimento total e 12,0 mm de comprimento da carapaça, enquanto as fêmeas maturam com 109,0 mm e 22,0 mm, respectivamente. Em geral, o recrutamento da espécie ocorreu de junho a agosto e de janeiro a maio, e está em conformidade parcial com a atual legislação de proteção deste recurso pesqueiro na região.

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“…Uncertain identifications and a cryptic species of Xiphopenaeus may also account for the finding that juvenile X. kroyeri recruit to estuaries yearround in the western Atlantic (Fransozo et al, 2000;Castro et al, 2005). The fact that X. kroyeri and R. constrictus are currently considered overfished off Brazil (de Francisco et al, 2008) indicates a need to re-assess stocks because exploitation patterns differ and populations depend on the annual supply of new recruits for replenishment. If populations are recruitment limited, climate and other environmental changes that can affect the survival, dispersal and recruitment pathways of ELS may impact adversely stock dynamics and necessitate different management strategies, which emphasize the need to re-examine the abundance and distribution of ELS and the importance of accurate identifications.…”

Section: Resultsmentioning

confidence: 99%

“…Xiphopenaeus kroyeri occurs from North Carolina to southern Brazil and supports a small commercial fishery in the northern Gulf of Mexico (Fig. 1), but it is heavily fished from Guyana through southern Brazil and is currently considered over-exploited (Castro et al, 2005;Gusmao et al, 2006;de Francisco et al, 2008). A cryptic species of Xiphopenaeus Smith, 1869, occurs off Central andSouth America (Gusmao et al, 2006), but only X. kroyeri is currently recognized (McLaughlin et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

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Misidentification of mysis stages of Xiphopenaeus kroyeri (Heller, 1862) and Rimapenaeus Pérez-Farfante and Kensley, 1997 (Decapoda: Penaeidae) in the western Atlantic

Ditty

Salas

2012

Journal of Crustacean Biology

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Studies in the western Atlantic have relied primarily on the key of Cook (1966) to identify and discriminate early life stages (ELS) of Xiphopenaeus kroyeri (Heller, 1862) and Rimapenaeus spp. Pérez-Farfante and Kensley, 1997, even though larvae had not been reared successfully past the zoea phase at that time. We surveyed the penaeid literature for descriptions of reared mysis stages of X. kroyeri and Rimapenaeus, compared characters with those of Cook (1966), and found that Cook had reversed illustrations and criteria to discriminate taxa. We also examined plankton-collected mysis stages and identified new characters and previously unrecognized differences between taxa. Mysis stages of X. kroyeri have a slender median spine laterally near the posterior margin of pleomere five, not those of Rimapenaeus, although some early first myses of Rimapenaeus may have a vestigial spine laterally on pleomere five. Rimapenaeus has single dorsomedian spines on pleomeres four through six with the spine on pleomeres five and six >40% (usually about 50%) of fifth pleomere length as measured along the dorsal midline. Rimapenaeus lacks a pterygiostomial spine, although a spine on the distal margin of the developing antennal peduncle near the ventrolateral border of the carapace can be confused with a pterygiostomial spine. Xiphopenaeus kroyeri has a pterygiostomial spine and single dorsomedian spines on pleomeres four through six with the spine on pleomeres five and six <35% (usually about 25%) of fifth pleomere length. Xiphopenaeus kroyeri also has a gap about the width of one spine between the longest and adjacent outer pairs of furcal spines along the posterior margin of the telson, whereas Rimapenaeus has contiguous furcal spines. Differences in spine length dorsally on pleomeres five and six, and the presence or absence of a pterygiostomial spine should be used to discriminate taxa because the low hepatic spine and median spine laterally on pleomere five can be difficult to detect in X. kroyeri, even with a biological stain applied. Likely misidentification of mysis stages and possible overexploitation of X. kroyeri and Rimapenaeus spp. stocks in the western Atlantic emphasizes the need to reassess information on ELS and the necessity of accurate identifications.

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Isolation and characterization of microsatellites in three overexploited penaeid shrimp species along the Brazilian coastline

Cited by 9 publications

References 15 publications

Reproductive biology and recruitment of Xiphopenaeus kroyeri in a marine protected area in the Western Atlantic: implications for resource management

Reproductive biology and recruitment of Xiphopenaeus kroyeri in a marine protected area in the Western Atlantic: implications for resource management

Growth and Recruitment of the Atlantic Seabob Shrimp, Xiphopenaeus kroyeri (Heller, 1862) (Decapoda, Penaeidae), on the Coast of Rio De Janeiro, Southeastern Brazil

Misidentification of mysis stages of Xiphopenaeus kroyeri (Heller, 1862) and Rimapenaeus Pérez-Farfante and Kensley, 1997 (Decapoda: Penaeidae) in the western Atlantic

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