Captive gummy sharks, <i>Mustelus antarcticus</i>, form hypermineralised bands in their vertebrae during winter

Officer, Rick; Day, Rob; Clement, John G.; Brown, Lauren

doi:10.1139/f97-157

Cited by 16 publications

(11 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…This individual was not approaching asymptotic W D , and a previously derived W D and mass relationship for N. kuhlii (Pierce et al , 2009) implies that the mass of this individual was c. 50% of expected maxima. Therefore, it seems unlikely that the lack of growth or band deposition in this individual resulted from determinate growth (Francis et al , 2007) although individual growth rates in elasmobranchs can be highly variable (Officer et al , 1997). Calcein has not been previously shown to inhibit growth or cause negative physiological effects at the low dosages used in this study (Gelsleichter et al , 1997; McAuley et al , 2006), although physical tags have been shown to retard growth in some shark studies (Kohler & Turner, 2001).…”

Section: Discussionmentioning

confidence: 99%

Validated annual band‐pair periodicity and growth parameters of blue‐spotted maskray Neotrygon kuhlii from south‐east Queensland, Australia

Pierce

Bennett

2009

Journal of Fish Biology

View full text Add to dashboard Cite

Age and growth parameters were derived for blue-spotted maskray Neotrygon kuhlii from Moreton Bay in subtropical eastern Australia. Maximum age estimates of 13 and 10 years were obtained from female (n = 76) and male (n = 44) N. kuhlii, respectively. Estimated ages at maturity for 50% of females and males were 6.32 and 3.95 years, respectively. A three-parameter power function provided the best statistical fit to size at age data in both sexes, providing parameter estimates of y(0) = 163.13, a = 58.52 and b = 0.58 for females and y(0) = 165.13, a = 59.02 and b = 0.54 in males. The two-parameter von Bertalanffy growth function was used to estimate biological parameters based on disc width (W(D)) for both female (W(Dinfinity) = 465.81 mm, K = 0.13 year(-1), b = 0.63) and male N. kuhlii (W(Dinfinity) = 385.19 mm, K = 0.20 year(-1), b = 0.54). Annual band-pair deposition was observed in three calcein-injected N. kuhlii after periods of liberty ranging from 631 to 1081 days. Centrum edge analysis indicated that annual band-pair formation was generally consistent within this population, with translucent bands formed over spring and summer and opaque bands formed in autumn and winter. Individual growth rates obtained from tagged specimens were similar to power function growth predictions. These results support previous characterizations of this common trawl by-catch species as comparatively resilient to non-targeted catches, although higher catch rates outside Australia infer a need for cautious management.

show abstract

Section: Discussionmentioning

confidence: 99%

Validated annual band‐pair periodicity and growth parameters of blue‐spotted maskray Neotrygon kuhlii from south‐east Queensland, Australia

Pierce

Bennett

2009

Journal of Fish Biology

View full text Add to dashboard Cite

show abstract

“…Cailliet and Goldman (2004) stated that ''the most commonly distinguishable banding pattern in sectioned centra when viewed microscopically is one of wide bands separated by distinct narrow bands,'' and also that the ''terms opaque and translucent are commonly used to describe these bands.'' An additional characterization of chondrichthyan growth bands was applied by Officer et al (1996Officer et al ( , 1997 based upon their relative extent of mineralization; these were identified as ''hypermineralized bands. ''…”

Section: Calcified Structures and Terminology Used For Chondrichthyanmentioning

confidence: 99%

“…These fine rings have rarely been reported in chondrichthyans. Officer et al (1996Officer et al ( , 1997 identified these features as ''minor increments'' or ''fine check marks'' in gummy, Mustelus antarcticus, and school shark, Galeorhinus galeus, vertebrae, and similar rings were found in vertebral centra of the blue stingray, Dasyatis chrysonota (Cowley 1997), smooth hound, M. mustelus (Goosen and Smale 1997), and sandtiger sharks, Carcharias taurus ).…”

Section: Calcified Structures and Terminology Used For Chondrichthyanmentioning

confidence: 99%

Age and growth studies of chondrichthyan fishes: the need for consistency in terminology, verification, validation, and growth function fitting

et al. 2006

View full text Add to dashboard Cite

Validated age and growth estimates are important for constructing age-structured population dynamic models of chondrichthyan fishes, especially those which are exploited. We review age and growth studies of chondrichthyan fishes, using 28 recent studies to identify areas where improvements can be made in describing the characteristics of ageing structures (both traditional and novel) utilized to estimate ages of sharks, rays, and chimaeras. The topics identified that need consistency include the: (1) terminology used to describe growth features; (2) methods used to both verify and validate age estimates from chondrichthyan calcified structures, especially edge and marginal increment analyses; and (3) the functions used to produce and describe growth parameters, stressing the incorporation of size at birth (L 0 ) and multiple functions to characterize growth characteristics, age at maturity and longevity.

show abstract

“…Two readers counted the white, hyper-mineralised vertebral bands (Officer et al 1997), in un-enhanced digital images obtained from X-rayed sections (Fig. 2).…”

Section: Age and Growthmentioning

confidence: 99%

“…Nothing is known about the timing of band deposition or the seasonality of hatching from the egg case in rough and smooth skates (though hypermineralised bands are laid down during winter in Mustelus antarcticus (Officer et al 1997)). We therefore did not assign a theoretical birthday for skate ageing.…”

Section: Age and Growthmentioning

confidence: 99%

Age, growth, and sexual maturity of two New Zealand endemic skates,Dipturus nasutusandD. innominatus

Francis¹,

Maolagáin

Stevens

2001

New Zealand Journal of Marine and Freshwater Research

View full text Add to dashboard Cite

Rough and smooth skates (Dipturus nasutus (Banks 1841) and/), innominatus (Garrick & Paul 1974)) were aged by counting growth bands on X-rays of thick sections of vertebral centra. Band counts were imprecise, but there was no betweenreader bias. Age estimates were not validated. The oldest rough skate was 9 years old, but few were more than 6 years old. Females may live longer than males. The combined sexes von Bertalanffy growth curve was L r = 91.3 (1 -e -0.16 [ t + 1.20 ]). Half the males matured by c. 52 cm pelvic length (PL) and 4 years, and females by 59 cm PL and 6 years. The oldest smooth skate in the sample was 24 years, but longevity probably exceeds that. Females appear to live longer than males. The combined sexes von Bertalanffy growth curve was: L t = 150.5 (1 -e -0.095[t + 1.06] ). Half the males matured by c. 93 cm PL and 8 years, and females by 112 cm PL and 13 years. Smooth skate are late maturing and long-lived relative to other skates, whereas rough skate are early maturing with a moderate life span.

show abstract

Captive gummy sharks, Mustelus antarcticus, form hypermineralised bands in their vertebrae during winter

Cited by 16 publications

References 25 publications

Validated annual band‐pair periodicity and growth parameters of blue‐spotted maskray Neotrygon kuhlii from south‐east Queensland, Australia

Validated annual band‐pair periodicity and growth parameters of blue‐spotted maskray Neotrygon kuhlii from south‐east Queensland, Australia

Age and growth studies of chondrichthyan fishes: the need for consistency in terminology, verification, validation, and growth function fitting

Age, growth, and sexual maturity of two New Zealand endemic skates,Dipturus nasutusandD. innominatus

Contact Info

Product

Resources

About