Growth of spotted ragged-tooth sharks<i>Carcharias taurus</i>(Rafinesque) in captivity

Govender, A.; Kistnasamy, N.; Elst, R. P. Van Der

doi:10.2989/025776191784287718

Cited by 12 publications

(4 citation statements)

References 3 publications

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“…These ages are close to the maximum documented ages of sand tiger sharks in captivity. Govender et al (1991) reported a male that had been in captivity at an aquarium in Durban, South Africa for 16 years, and there is currently a 20-year-old female (as of 2002) at the National Aquarium in Baltimore, MD, USA (A. Henningsen, personal communication). Branstetter and Musick (1994) estimated longevity at 30-35 years by extrapolating their von Bertalanffy curves generated from back-calculated data.…”

Section: Discussionmentioning

confidence: 95%

A re-examination of the age and growth of sand tiger sharks, Carcharias taurus, in the western North Atlantic: the importance of ageing protocols and use of multiple back-calculation techniques

2006

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Age and growth estimates for sand tiger sharks, Carcharias taurus, in the western North Atlantic were derived from 96 vertebral centra collected from sharks ranging from 94 to 277 cm total length (TL), and compared to previously published age and growth data. The oldest female and male sand tiger sharks aged in this study were 17 and 15 years of age, respectively. von Bertalanffy growth parameters derived from vertebral length-at-age data are L ¥ = 295.8 cm TL, k = 0.11 year -1 , and t 0 = -4.2 years for females, and L ¥ = 249.5 cm TL, k = 0.16 year -1 , and t 0 = -3.4 years for males. Sexual maturity is estimated to be 9-10 years for females and 6-7 years for males. Weight-to-length relationships determined for female and male sand tiger sharks in the western North Atlantic are; W = 1.3 · 10 -4 · L 2.4 (r 2 = 0.84, n = 55) and W = 9.0 · 10 -5 · L 2.5 (r 2 = 0.84, n = 47), respectively, and 7.9 · 10 -5 · L 2.5 (r 2 = 0.84) for the sexes combined. Our results show sand tigers possess a slower rate of growth than previously thought. This information is crucial for accurately assessing this population's ability to recover, and further justifies the need for this species to be fully protected.

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Section: Discussionmentioning

confidence: 95%

A re-examination of the age and growth of sand tiger sharks, Carcharias taurus, in the western North Atlantic: the importance of ageing protocols and use of multiple back-calculation techniques

2006

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“…), indicating that, at least anecdotally, young sharks likely grow faster than larger individuals. Nevertheless, the growth rate of sharks in captivity may differ from those in the wild, with evidence that sharks in captivity can grow faster than those in the wild (Carrier & Luer, 1990; Govender et al ., 1991). Even though the sharks used in this study were exposed to natural coastal sea water, they were within a sea‐cage, where the combination of being fed and presumably a relatively low energy expenditure because of restricted mobility may have influenced their growth rates (Goldman, 2005).…”

Section: Discussionmentioning

confidence: 99%

Age and growth of the tropical oviparous shark, Chiloscyllium punctatum in Indonesian waters

Fahmi

Kurniawan

Tibbetts

et al. 2021

Journal of Fish Biology

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The brown‐banded bamboo shark, Chiloscyllium punctatum, is the most common shark caught in coastal commercial fisheries throughout Southeast Asia, yet there is a lack of the life‐history information necessary for reliable stock assessments. The authors estimated growth rates and age at maturity using analysis of growth bands in vertebral centra. They trialled four different techniques to enhance the visibility and improve identification of the putative annual growth bands necessary for age estimation. The authors found that the burn method on whole vertebral centra provided the most readable and consistent results for age analysis. The logistic model was chosen as the best‐fit growth model for age estimation of 330 individual C. punctatum from Indonesia. Several age verification methods, including marginal increment ratio and length‐frequency analysis, were performed with the support of age validation through the use of calcein‐labelled vertebrae from two sharks maintained in captivity. This study found that C. punctatum from Indonesian waters is a fast‐growing species that can grow up to 18 cm year−1, reach an estimated maximum total length of 1 m, mature at c. 6.5 years and live for up to 14 years.

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“…Growth in wild and captive bonnethead shark, Sphyrna tiburo, were the same (Carlson and Parsons 1997). Available growth data for the sandtiger shark (Carcharias taurus) suggested that growth in captivity was slower than that in the field (Govender et al 1991;Branstetter and Musick 1994). Comparison of growth in captivity and in the wild ought to be done cautiously because captive growth is affected by the activity level, which depends on the community make-up and stocking density in the tank (Mohan 1996).…”

Section: Comparison Of Growth In Captivity and In The Wildmentioning

confidence: 99%

Captive biology of the pelagic stingray, Dasyatis violacea (Bonaparte, 1832)

Mollet¹,

Ezcurra²,

O’Sullivan³

2002

Mar. Freshwater Res.

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Pelagic stingrays, Dasyatis violacea, were collected in southern California in summer–autumn 1994–97. The smallest, 40–45 cm disc width (DW) and 2 kg, were estimated to approach age two. In captive growth and feeding experiments from March 1995 to August 2000, the largest male reached 68 cm DW and 12 kg at estimated age 7 years, and the largest female reached 96 cm DW and 49 kg at estimated age 9 years. The growth data could be fitted with both Gompertz and von Bertalanffy growth functions, but the former produced more reasonable values for size at birth, maximum size, and longevity. Consumption of squid was 6–7% of body mass (BM) per day for juveniles 2 years old and decreased to 1.25% BM day–1 for adults. Food intake for adults was seasonal, with 2 cycles per year with a maximum of ~2.0% and a minimum of 1.0–0.5% BM day–1 from July to October 1998. The data for gross conversion efficiency (K1, based on energy values), collected at 20°C with daily feeding to satiation, could be fitted with a linear regression in the estimated mean age range of 3–6 years (K1 = 0.37 – 0.055 Age).

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Growth of spotted ragged-tooth sharksCarcharias taurus(Rafinesque) in captivity

Cited by 12 publications

References 3 publications

A re-examination of the age and growth of sand tiger sharks, Carcharias taurus, in the western North Atlantic: the importance of ageing protocols and use of multiple back-calculation techniques

A re-examination of the age and growth of sand tiger sharks, Carcharias taurus, in the western North Atlantic: the importance of ageing protocols and use of multiple back-calculation techniques

Age and growth of the tropical oviparous shark, Chiloscyllium punctatum in Indonesian waters

Captive biology of the pelagic stingray, Dasyatis violacea (Bonaparte, 1832)

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