Age estimation and growth of the zebra seabream Diplodus cervinus cervinus (Lowe, 1838) on the Canary Islands shelf (Central-east Atlantic)

Pajuelo, José G.; Nespereira, José María Lorenzo; Domínguez-Seoane, Rosa

doi:10.1016/s0165-7836(02)00249-7

Cited by 9 publications

(5 citation statements)

References 13 publications

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“…The evidence currently available suggests that a seasonal temperature difference of 6°C might be sufficient to cause ring formation (Morales‐Nin and Ralston, 1990). Similar findings have been recorded in other studies carried out in the Canarian archipelago on other sparid species such as P. pagrus , Spondyliosoma cantharus , Pagellus acarne , Diplodus sargus and D. cervinus (Pajuelo and Lorenzo, 1996, 1999, 2000, 2002, 2003).…”

Section: Discussionsupporting

confidence: 91%

Life history of the red-banded seabream Pagrus auriga (Sparidae) from the coasts of the Canarian archipelago

et al. 2006

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Red-banded seabream Pagrus auriga (N ¼ 615) were caught off the Canary Islands from January 2003 to December 2004. Total length ranged from 120 to 780 mm. The species was characterized by protogynous hermaphroditism. The male : female ratio was in favour of females (1 : 8.2). The reproductive season extended from September to February, with a peak in spawning activity in October-November. Fifty percentage maturity was reached at 387 mm total length by females and 533 mm by males. The length-weight relationship for all individuals was described by the parameters: a ¼ 0.0086 and b ¼ 3.014, when length is given in mm and weight in grams. Otolith age readings indicated that the population consists of 19 age groups, including a very high proportion of individuals between 0 and 7 years old. Growth analysis reveals that the species is slow-growing and relatively long lived (18 years). The von Bertalanffy growth parameters for the entire population were: L ¥ ¼ 803 mm, k ¼ 0.081 year )1 and t 0 ¼ )2.17 year. Growth differed between males and females. The instantaneous rate of natural mortality for all fish was: M ¼ 0.164 year )1 .

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Section: Discussionsupporting

confidence: 91%

Life history of the red-banded seabream Pagrus auriga (Sparidae) from the coasts of the Canarian archipelago

et al. 2006

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“…Marginal zone analysis also shows that hyaline deposition, which is representative of discontinuous or slow growth, coincides with the winter spawning season of the species. Similar findings have been reported in the Canary Islands for other Diplodus species, including D. annularis (Pajuelo and Lorenzo, 2001), Diplodus cervinus cervinus (Pajuelo and Lorenzo, 2003a), D. sargus cadenati (Pajuelo and Lorenzo, 2002), and Diplodus vulgaris (Pajuelo and Lorenzo, 2003b).…”

Section: Discussionsupporting

confidence: 88%

“…This rise in water temperature could introduce changes in the metabolic activity of the individuals during spring and summer and could be the main factor responsible for opaque zone deposition. Pajuelo and Lorenzo (2001, 2002, 2003a, 2004, Buxton (1993, 1996) and Mann and Buxton (1997) also found that the opaque rings formation in the otoliths of different Diplodus species takes place during the rapid growth season. The available data suggest that the increase in seawater temperature affects the physiology of otolith growth of the Diplodus species and results in the formation of the annulus.…”

Section: Discussionmentioning

confidence: 90%

Age and growth of the sharpsnout seabream Diplodus puntazzo (Cetti, 1777) inhabiting the Canarian archipelago, estimated by reading otoliths and by backcalculation

et al. 2006

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“…It has been suggested that the southern Angolan and South African populations of D. hottentotus flanking this distribution break may be isolated by the cold‐water marine biogeographic barrier formed by the Benguela Current (Floeter et al, ). Several studies have been conducted on the life history of D. cervinus from the Canary Islands (Pajuelo et al, , b), Algeria (Derbal & Kara, ; Benchalel et al ., ), South Africa (Mann & Buxton, , , ) and Angola (Winkler et al, , b). While there are significant differences between the life history parameters of the northern Atlantic & Mediterranean populations and the Angolan & South African populations, this could be due to sampling biases and the use of suspect aging and sexual‐pattern determination techniques.…”

Section: Introductionmentioning

confidence: 99%

Integrated genetic and morphological data support eco‐evolutionary divergence of Angolan and South African populations of Diplodus hottentotus

Gwilliam

Winkler

Potts

et al. 2018

Journal of Fish Biology

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The genus Diplodus presents multiple cases of taxonomic conjecture. Among these the D. cervinus complex was previously described as comprising three subspecies that are now regarded as separate species: Diplodus cervinus, Diplodus hottentotus and Diplodus omanensis. Diplodus hottentotus exhibits a clear break in its distribution around the Benguela Current system, prompting speculation that Angolan and South African populations flanking this area may be isolated and warrant formal taxonomic distinction. This study reports the first integrated genetic [mitochondrial (mt)DNA and nuclear microsatellite] and morphological (morphometric, meristic and colouration) study to assess patterns of divergence between populations in the two regions. High levels of cytonuclear divergence between the populations support a prolonged period of genetic isolation, with the sharing of only one mtDNA haplotype (12 haplotypes were fully sorted between regions) attributed to retention of ancestral polymorphism. Fish from the two regions were significantly differentiated at a number of morphometric (69·5%) and meristic (46%) characters. In addition, Angolan and South African fish exhibited reciprocally diagnostic colouration patterns that were more similar to Mediterranean and Indian Ocean congeners, respectively. Based on the congruent genetic and phenotypic diversity we suggest that the use of hottentotus, whether for full species or subspecies status, should be restricted to South African D. cervinus to reflect their status as a distinct species-like unit, while the relationship between Angolan and Atlantic-Mediterranean D. cervinus will require further demo-genetic analysis. This study highlights the utility of integrated genetic and morphological approaches to assess taxonomic diversity within the biogeographically dynamic Benguela Current region.

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Age estimation and growth of the zebra seabream Diplodus cervinus cervinus (Lowe, 1838) on the Canary Islands shelf (Central-east Atlantic)

Cited by 9 publications

References 13 publications

Life history of the red-banded seabream Pagrus auriga (Sparidae) from the coasts of the Canarian archipelago

Life history of the red-banded seabream Pagrus auriga (Sparidae) from the coasts of the Canarian archipelago

Age and growth of the sharpsnout seabream Diplodus puntazzo (Cetti, 1777) inhabiting the Canarian archipelago, estimated by reading otoliths and by backcalculation

Integrated genetic and morphological data support eco‐evolutionary divergence of Angolan and South African populations of Diplodus hottentotus

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