Age and growth of Sarpa salpa (Pisces: Sparidae) off the east coast of South Africa

Walt, B.A. van der; Beckley, L.E.

doi:10.1016/s0165-7836(97)00021-0

Cited by 29 publications

(15 citation statements)

References 34 publications

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“…In this study, marginal increment analysis and oxytetracycline labelling were used to validate age estimates, and showed strong evidence that one opaque increment is deposited annually. These results are consistent with results from other South African sparid species, which have also been shown to deposit one opaque increment annually (Coetzee & Baird 1981;Buxton & Clarke 1986;1989;Buxton 1993, van der Walt & Beckley 1997Chale-Matsau et al 2001).…”

Section: Discussionsupporting

confidence: 92%

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Age and growth of the estuarine-dependent sparidAcanthopagrus berdain northern KwaZulu-Natal, South Africa

et al. 2003

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Ages were estimated for the tropical sparid, Acanthopagrus berda, caught in northern KwaZulu-Natal estuaries. Whole otoliths were used in the age determination. Age estimates were validated by marginal increment analysis and oxytetracycline labelling, which indicated that opaque deposition occurs primarily from September to November each year. The reproducibility of age estimates was described by a coefficient of variation of 10%. The von Bertalanffy growth curve was found to best describe the growth of A. berda. The parameters of the von Bertalanffy growth curve indicated that A. berda in northern KwaZulu-Natal is a slowgrowing species, capable of reaching at least 16 years of age. Longevity of the species, coupled with sex change, late maturation and estuarine dependency, give cause for concern for the continued sustainable utilization of this species.

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Section: Discussionsupporting

confidence: 92%

“…Failure of this test means that application of other statistical tests have lower power. This problem has also been encountered by Smale & Punt (1991) and van der Walt & Beckley (1997) for other sparids.…”

Section: Discussionmentioning

confidence: 80%

Age and growth of the estuarine-dependent sparidAcanthopagrus berdain northern KwaZulu-Natal, South Africa

et al. 2003

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“…In sparid species, age determination has often proved difficult as a consequence of the phenomenon of stacking of growth zones towards the otolith edge, especially in older fish Clarke, 1991, 1992;Smale and Punt, 1991;van der Walt and Beckley, 1997). However, in the striped seabream off the Canary Islands, the translucency of the otoliths allowed age to be determined with relative ease.…”

Section: Discussionmentioning

confidence: 99%

Determination of age and growth of the striped seabream <i>Lithognathus mormyrus</i> (Sparidae), in the Canary archipelago by otolith readings and backcalculation

Pajuelo¹,

Lorenzo²,

Méndez³

et al. 2002

Sci. Mar.

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SUMMARY:The age and growth of the striped seabream Lithognathus mormyrus caught off the Canary Islands (centraleast Atlantic) from January to December 1999 were studied. A total of 496 individuals, ranging in size between 113 and 350 mm total length, were examined. Otoliths clearly showed the ring pattern common to teleost fishes. One year's growth was made up of one opaque and one translucent ring. The opaque ring was deposited during the summer months and the translucent one during the winter months. Fish aged 0-8 years old were found. The von Bertalanffy growth parameters for all fish were: L ∞ =427 mm, k=0.19 year -1 , and t 0 =1.46 year. The otolith readings for estimating age and growth were confirmed by using the backcalculation method.

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“…The oldest age estimate obtained in this study was seven years for females with a 33 cm TL. The growth performance of salema in the Mediterranean (φ = 2.59), estimated using the φ index of Munro and Pauly (1983), showed a growth rate dissimilar to those reported from South Africa (φ = 4.44: Van der Walt and Beckley, 1997), and the Canarian Archipelago (φ = 2.68: Mendez-Villamil et al, 2001). In the latter area salema seems to reach a larger length-at-age than in the Mediterranean.…”

mentioning

confidence: 80%

“…There are no data available on its growth for the Mediterranean population. The only studies on growth were made in the Canary Islands (MendezVillamil et al, 2001), and in the eastern South African waters (Van der Walt and Beckley, 1997).…”

Section: Introductionmentioning

confidence: 99%

Observations on the reproductive cycle, age and growth of the salema, <em>Sarpa salpa</em> (Osteichthyes: Sparidae) along the western central coast of Italy

Criscoli¹,

Colloca²,

Carpentieri³

et al. 2006

Sci. Mar.

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SUMMARY:The sexual maturation and the growth of the salema, Sarpa salpa (Linnaeus, 1758), along the Italian Mediterranean coast (central Italy), were studied in fish (n = 105) killed incidentally by underwater explosions during the construction of Civitavecchia harbour in 1999 and specimens collected with trammel nets (n = 339). This species is characterized by a protandric hermaphroditism and the sex change process occurs between 24 and 31 cm TL corresponding to a wide range of ages (3-7 years). Size at maturity (L 50 ) was 19.5 cm, at which almost all the individuals were males. Two distinct spawning periods were observed: one in spring, from March to May, and the other in autumn, from the end of September to November. During the first year, compensatory growth occurred in the individuals born in the two periods. An annual regular pattern of ring deposition was identified in the otoliths: the translucent ring was laid down during the winter months, while the opaque ring was formed during the summer months. Back-calculated lengths at age were used to estimate the parameters of the Von Bertalanffy growth equation which were: L ∞ = 37.27 cm, K = 0.27 year -1 and t 0 = -0.53 year. Salema showed isometric growth (b = 3.04; P = 0.84; t = 0.19).Keywords: reproduction, protandrous, lengths-at-age, otoliths.RESUMEN: PATRÓN REPRODUCTIVO Y CARACTERÍSTICAS DE LA POBLACIÓN DE LA SALEMA, SARPA SALPA (OSTEICHTHYES: SPARIDAE) EN EL MAR MEDITERRÁNEO. -La maduración sexual y crecimiento de Sarpa salpa (Linnaeus, 1758) en las costas del Mediterráneo italiano (Italia central) fueron estudiadas a partir de la recolecta de ejemplares muertos accidentalmente (n = 105) como consecuencia de las explosiones submarinas acaecidas durante la construcción del puerto de Civitavecchia en 1999, así como de ejemplares recolectados mediante redes de arrastre (n = 339). Esta especie se caracteriza por un hermafroditismo protándrico, ocurriendo el proceso de cambio sexual entre los 24 y 31 cm TL, los cuales corresponden a un amplio rango de edades (3-7 años). La talla de maduración (L 50 ) fue de 19,5 cm, siendo la casi la totalidad de los individuos eran de sexo masculino. Se observaron dos períodos diferentes de reproducción: uno en primavera, de marzo a mayo y otro en otoño, de finales de septiembre a noviembre. Se observó, durante el primer año, un crecimiento compensatorio ocurrido entre los individuos nacidos en los dos períodos. Se identificó en los otolitos un modelo anual y regular de deposición de anillos. Se observó el depósito de un anillo translúcido durante los meses invernales, mientras que otro opaco se formó durante los meses de verano. Las composición por edades y tallas retrocalculadas se utilizaron para estimar los parámetros de la ecuación de crecimiento de Von Bertalanffy, es decir: L ∞ = 37,27 cm, K = 0,27 año -1 y t 0 = -0,53 año. S. salpa demostró un crecimiento isométrico (b = 3,04; P = 0,84; t = 0,19).

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Age and growth of Sarpa salpa (Pisces: Sparidae) off the east coast of South Africa

Cited by 29 publications

References 34 publications

Age and growth of the estuarine-dependent sparidAcanthopagrus berdain northern KwaZulu-Natal, South Africa

Age and growth of the estuarine-dependent sparidAcanthopagrus berdain northern KwaZulu-Natal, South Africa

Determination of age and growth of the striped seabream <i>Lithognathus mormyrus</i> (Sparidae), in the Canary archipelago by otolith readings and backcalculation

Observations on the reproductive cycle, age and growth of the salema, <em>Sarpa salpa</em> (Osteichthyes: Sparidae) along the western central coast of Italy

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