Age and growth of the blacknose shark, Carcharhinus acronotus (Poey, 1860) off the northeastern Brazilian Coast

Barreto, Rodrigo; Lessa, Rosângela; Hazin, Fábio Hissa Vieira; Santana, Francisco

doi:10.1016/j.fishres.2011.04.003

Cited by 27 publications

(21 citation statements)

References 25 publications

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“…Therefore, the shapes and AIC values can be very close or equal. Similar results have been previously described using the general model of Richards or Schnute vs. different growth submodels (Rogers-Bennett et al 2007, Flores et al 2010, Shelton et al 2006, Barreto et al 2011. The literature shows that for the multi-model inference approach applied to individual growth, it is not unusual that different candidate growth models yield equal values of AIC (Rogers-Bennett et al 2007, Flores et al 2010, Helidoniotis et al 2011).…”

Section: Discussionsupporting

confidence: 82%

“…The literature shows that for the multi-model inference approach applied to individual growth, it is not unusual that different candidate growth models yield equal values of AIC (Rogers-Bennett et al 2007, Flores et al 2010, Helidoniotis et al 2011). Several studies also have shown that the AIC estimates of the candidate growth models were very close; the magnitude of the change can be < 0.1 (Araya & Cubillos 2006, Shelton et al 2006, Farrell et al 2010, Barreto et al 2011, Grist et al 2011, Mercier et al 2011, Shuman et al 2011. Markaida et al (2005), using mark-recapture data of D. gigas, showed that the daily growth rate diminishes for older individuals; their study analyzed squid between 46 and 80.7 cm ML, and the daily growth rate changed from 1.5 to 1.0 mm d −1…”

Section: Discussionmentioning

confidence: 94%

“…In our study, the asymptotic growth model identified for D. gigas was based on multimodel inference; this approach is accepted for age and growth modeling as the best statistical procedure for model selection. This approach has been used in age and growth studies of other taxa, such as echinoderms (Shelton et al 2006, Flores et al 2010, fish (Araya & Cubillos 2006, Alp et al 2011, Barreto et al 2011), crustaceans (Montgomery et al 2010) and other mollusks (Rogers-Bennett et al 2007, Cruz-Vásquez et al 2012.…”

Section: Discussionmentioning

confidence: 99%

See 2 more Smart Citations

Growth model selection for the jumbo squid Dosidicus gigas from the Gulf of California, Mexico

Zepeda-Benitez¹,

Morales-Bojórquez

López‐Martínez³

et al. 2014

Aquat. Biol.

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Section: Discussionsupporting

confidence: 82%

Section: Discussionmentioning

confidence: 94%

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Growth model selection for the jumbo squid Dosidicus gigas from the Gulf of California, Mexico

Zepeda-Benitez¹,

Morales-Bojórquez

López‐Martínez³

et al. 2014

Aquat. Biol.

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“…Unfortunately, timely and regional reproductive information is rare for many elasmobranch species throughout the world. Even more rare are reproductive studies that also estimate the ages of elasmobranchs; most age-at-maturity estimates are back-calculated using the von Bertalanffy (von Bertalanffy 1938) equation for size at maturity (Casey et al 1985;Carlson et al 2006;Barreto et al 2011).…”

mentioning

confidence: 99%

Reproduction of the Blacktip Shark in the Gulf of Mexico

Baremore

Passerotti

2013

Mar Coast Fish

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Reproductive and age data were collected for Blacktip Sharks Carcharhinus limbatus in the Gulf of Mexico from fishery‐dependent and ‐independent sources from 2006 to 2011 for stock assessment. A total of 757 Blacktip Sharks were sampled for reproductive analysis (399 females, 358 males), of which 741 were aged. Additional length and age data from a previous age and growth study on Blacktip Sharks in the Gulf of Mexico (207 females, 161 males) were incorporated into the size‐ and age‐at‐maturity analyses. The results indicated that Blacktip Sharks in the Gulf of Mexico have a synchronous, seasonal reproductive cycle and that females exhibit a biennial ovarian cycle. Male and female mating and parturition peaked from March to May. Length at 50% maturity was estimated to be 105.8 and 119.2 cm FL for males and females, respectively, while age at 50% maturity was calculated as 4.8 and 6.3 years. Near‐term pups averaged 38 cm FL, and gestation was approximately 12 months. Litter size was 4.5 pups per female, and fecundity was found to increase with both maternal size and age. Maternal body size—but not age—had a positive influence on offspring fitness. This represents the first comprehensive reproductive study of Blacktip Sharks in the Gulf of Mexico. Received October 1, 2012; accepted December 5, 2012

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“…Studies in recent years using a multiple model approach have, however, established that alternative models may be more appropriate in some shark species Barreto et al, 2011;Geraghty et al, 2014). Therefore an information-theoretic, multi-model inference (MMI) approach was used (Burnham and Anderson, 2001;Harry et al, 2013) to determine the most appropriate growth model for G. cuvier in eastern Australian waters.…”

Section: Growth Modellingmentioning

confidence: 99%

The biology and ecology of the tiger shark (Galeocerdo cuvier) on the east coast of Australia

Holmes¹

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The tiger shark (Galeocerdo cuvier) (Péron and Lesueur 1822) is the largest of the carcharhinids, with a circumglobal distribution in both tropical and warm temperate coastal and pelagic waters. In the western Pacific, G. cuvier movements are wide-ranging, encompassing the east coast of Australia and south Pacific Islands.Throughout the region, G. cuvier is exposed to a range of commercial, recreational, artisanal and illegal foreign fishery impacts, as both a target and by-product species.Listed as 'near threatened' on the International Union for Conservation of Nature (IUCN) Red List, suitable long term species-specific catch, catch rate and biological data are seldom available for large shark species like G. cuvier, particularly where historical commercial fishery logbook reporting has been poor.Shark control programs targeting large sharks along Australia's east coast have been in operation for over 60 years, using relatively standardised fishing gear in nearshore waters all year round, with historical catch and effort data recorded by shark contractors. Historical catch, catch rate and biological data collected through the Queensland Shark Control Program (QSCP) since 1993 were investigated, which revealed significant declines (p < 0.05) in catch rates of G. cuvier at some tropical and all sub-tropical locations along the Queensland coast. Significant temporal declines in the average size of G. cuvier also occurred at four of the nine locations analysed (p < 0.05), which could be indicative of fishing reducing abundance in these areas. Interannual variability in catches at each location was considerable and warranted careful interpretation with respect to estimating population abundance from these data.Investigation into the spatial and temporal movements of tiger sharks, and how their abundances fluctuate in relation to environmental influences, provided a basis for determining the factors driving this variability.Tiger shark movements were recorded using PAT Mk-10 and SPOT5 electronic tags to investigate G. cuvier spatial dynamics, site fidelity and habitat use off the east coast of Australia. Of the 18 tags deployed, 15 recorded information on depth and/or temperature, and horizontal movements, with tracking times ranging between four and 408 days. Horizontal movements were characterised by combinations of resident and transient behaviour that coincided with seasonal changes in water temperature, with summer migrations from sub-tropical Queensland waters to the southern temperate iii waters of New South Wales (NSW) to exploit the seasonally warm and prey abundant waters. While the majority of movement activity was focused around the continental slope, large-scale migration was evident with one individual moving from offshore Sydney, Australia, to New Caledonia (≈ 1800 km) in 48 days. Periods of tiger shark residency outside of Australia's fisheries management zones highlighted the potential vulnerability of the species to unregulated fisheries, and the importance of crossjurisdictional arrangemen...

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Age and growth of the blacknose shark, Carcharhinus acronotus (Poey, 1860) off the northeastern Brazilian Coast

Cited by 27 publications

References 25 publications

Growth model selection for the jumbo squid Dosidicus gigas from the Gulf of California, Mexico

Growth model selection for the jumbo squid Dosidicus gigas from the Gulf of California, Mexico

Reproduction of the Blacktip Shark in the Gulf of Mexico

The biology and ecology of the tiger shark (Galeocerdo cuvier) on the east coast of Australia

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