Reproductive biology and growth of the yellowbelly rockcod<i>Epinephelus marginatus</i>(Serranidae) from South-East Africa

Fennessy, S.T.

doi:10.2989/18142320609504128

Cited by 31 publications

(31 citation statements)

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“…Based on the total body length (33.7 cm), the specimen was identified to be approximately 16 months old when captured on the 11 th June 2012. Therefore, the hatching month was back-calculated to January 2011, which coincided with summer months and the main spawning period in South Africa (Fennessy, 2006). This provides a likely range for the spawning period of the specimen from October 2010 to March 2011.…”

Section: Resultsmentioning

confidence: 99%

“…The size of the specimen from Réunion (Supplementary Data S1) was 28.4 and 33.7 mm for the standard and the total length respectively. The total length was used to determine possible age of the specimen according to a von Bertalanffy growth model previously obtained for the species in South Africa (Fennessy, 2006). The hatching date of the captured specimen was then back-calculated using the age and the capture date (11 June 2012).…”

Section: Sample Collection and Ageing Of Specimenmentioning

confidence: 99%

“…Epinephelus marginatus (Lowe, 1834; Serranidae) is a protogynous hermaphrodite species (Fennessy, 2006) distributed in disjunct habitats throughout the Mediterranean Sea, the Atlantic Ocean (South America, Northeast Atlantic and Angola) and limited ranges from South Africa to southern Mozambique and in Oman (Heemstra & Heemstra, 2004). This species has a pelagic larval duration of approximately 20-30 days (Spedicato et al, 1998;Macpherson & Raventos, 2006) which allows dispersal through ocean currents before recruitment (Maggio et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

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Investigating the origin of vagrant dusky groupers, Epinephelus marginatus (Lowe, 1834), in coastal waters of Réunion Island

Reid

Crochelet

Bloomer

et al. 2016

Molecular Phylogenetics and Evolution

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Section: Resultsmentioning

confidence: 99%

Section: Sample Collection and Ageing Of Specimenmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Investigating the origin of vagrant dusky groupers, Epinephelus marginatus (Lowe, 1834), in coastal waters of Réunion Island

Reid

Crochelet

Bloomer

et al. 2016

Molecular Phylogenetics and Evolution

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“…Some of its biological features such as sedentary and territorial behavior (La Mesa et al, 2002), low growth rate, late maturation and protogynous hermaphrodite mode of reproduction (Fennessy, 2006) make this species particularly vulnerable to anthropogenic threats such as fishery. Accordingly, overexploitation from commercial fishing is considered the primary threat affecting this species (Cornish & Harmelin-Vivien, 2004).…”

Section: Introductionmentioning

confidence: 99%

“…Prior research on the biological and ecological aspects of the dusky grouper M. marginata has been concentrated on populations of the Mediterranean (Marino et al, 2001;Reñones et al, 2002;Linde et al, 2004) and the African western coast (Fennessy, 2006). In Brazil, although have been recorded in São Paulo and Rio de Janeiro States (Begossi & Silvano, 2008), previous studies have been focused on populations of Santa Catarina State, where the dusky grouper is commonly found in reefs and coastal rocky bottoms (Bertoncini et al, 2003, Gerhardinger et al, 2006Machado et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

Diet and feeding strategy of the dusky grouper Mycteroperca marginata (Actinopterygii: Epinephelidae) in a man-made rocky habitat in southern Brazil

et al. 2011

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The dusky grouper (Mycteroperca marginata) is a marine species usually associated with rocky bottoms and reefs. The present work investigated the diet and feeding strategy of a dusky grouper population inhabiting a 4.5 km long pair of rocky jetties located in the mouth of Patos Lagoon estuary. No prior research has been conducted in such man-made habitat and the current study provides a basis for comparative studies on the diet of the dusky grouper populations inhabiting natural vs. manmade rocky habitats. Similarly with previous studies on natural substrates, crabs and fishes were the main food categories consumed (%IRI = 85.1 and %IRI = 12.6, respectively), whereas shrimps and mollusks had lower importance in the diet (%IRI = 1.9 and 0.4, respectively). As previously reported for dusky grouper populations inhabiting reefs and rocky bottoms, the present work revealed conspicuous size related dietary shifts. Blue crabs and fishes become increasingly important food items in the diet of larger individuals (> 500 mm, TL). Finally, it was found that the studied dusky population has a generalist feeding strategy with a high between-individual variation in prey consumption. Such strategy remained similar across the size increment of the species. Our findings suggest that man-made rocky substrates provide suitable feeding grounds for the dusky grouper in southern Brazil and could be used as an additional tool in the conservation efforts of this endangered species.A garoupa-verdadeira (Mycteroperca marginata) é uma espécie marinha geralmente associada a fundos rochosos e recifes. O presente trabalho investiga a dieta e estratégia alimentar de uma população da garoupa-verdadeira que habita um longo (4,5 km) par de molhes de pedra na desembocadura do estuário da laguna dos Patos, sul do Brasil. Não há trabalhos anteriores realizados nesse tipo de habitat construído pelo homem e este trabalho fornece uma base de comparação com estudos de dieta de outras populações da garoupa-verdadeira ocorrendo em habitats naturais. De modo similar ao encontrado em estudos prévios realizados em substratos naturais, caranguejos e peixes foram as principais categorias de alimento consumidas (%IRI = 85,1 e %IRI = 12,6, respectivamente), enquanto camarões e moluscos tiveram menor importância na dieta (%IRI = 1,9 e %IRI = 0,4, respectivamente). Como reportado anteriormente para populações de garoupa-verdadeira que habitam recifes e fundos rochosos, o presente trabalho revelou marcadas mudanças na dieta em função do tamanho da espécie. Siri-azul e peixes tornam-se gradativamente mais importantes na dieta de indivíduos maiores (> 500 mm de comprimento total, CT). Finalmente, foi observado que a população de garoupa-verdadeira teve uma estratégia alimentar generalista com uma elevada variação entre indivíduos no consumo de presas. Essa estratégia permaneceu similar ao longo do aumento em tamanho da espécie. Os resultados do presente trabalho sugerem que substratos rochosos estabelecidos pelo homem propiciam locais de alimentação adequados para a ...

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Grouping groupers in the Mediterranean: Ecological baselines revealed by ancient proteins

Winter,

de Kock,

Mackie

et al. 2023

Ecology and Evolution

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Marine historical ecology provides a means to establish baselines to inform current fisheries management. Groupers (Epinephelidae) are key species for fisheries in the Mediterranean, which have been heavily overfished. Species abundance and distribution prior to the 20th century in the Mediterranean remains poorly known. To reconstruct the past biogeography of Mediterranean groupers, we investigated whether Zooarchaeology by Mass Spectrometry (ZooMS) can be used for identifying intra‐genus grouper bones to species level. We discovered 22 novel, species‐specific ZooMS biomarkers for groupers. Applying these biomarkers to Kinet Höyük, a Mediterranean archaeological site, demonstrated 4000 years of regional Epinephelus aeneus dominance and resiliency through millennia of fishing pressures, habitat degradation and climatic changes. Combining ZooMS identifications with catch size reconstructions revealed the Epinephelus aeneus capacity for growing 30 cm larger than hitherto documented, revising the maximum Total Length from 120 to 150 cm. Our results provide ecological baselines for a key Mediterranean fishery which could be leveraged to define and assess conservation targets.

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Reproductive biology and growth of the yellowbelly rockcodEpinephelus marginatus(Serranidae) from South-East Africa

Cited by 31 publications

References 0 publications

Investigating the origin of vagrant dusky groupers, Epinephelus marginatus (Lowe, 1834), in coastal waters of Réunion Island

Investigating the origin of vagrant dusky groupers, Epinephelus marginatus (Lowe, 1834), in coastal waters of Réunion Island

Diet and feeding strategy of the dusky grouper Mycteroperca marginata (Actinopterygii: Epinephelidae) in a man-made rocky habitat in southern Brazil

Grouping groupers in the Mediterranean: Ecological baselines revealed by ancient proteins

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