Multiple effects of harvesting on populations of the purple sea urchin paracentrotus lividus in north Portugal

Bertocci, Iacopo; Machado, Inês Ribeiro; Freitas, Cristiano; Domínguez, Rula; Sousa-Pinto, Isabel; Gonçalves, Maycon S. S.; Gaspar, Miguel B.

doi:10.1016/j.fishres.2013.10.010

Cited by 57 publications

(45 citation statements)

References 46 publications

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“…In Portugal, sea urchin harvesting is performed all over the coast, with export primarily to Spanish and French markets (Bertocci, Blanco, Franco, Fernández‐Boo, & Arenas, ; Bertocci et al., ; Boudouresque & Verlaque, ; Domínguez et al., ). Harvesting occurs mainly between December and April, when the gonads reach higher volume, and better texture and flavor (Fernández, ).…”

Section: Introductionmentioning

confidence: 99%

Reproductive cycle of the commercially harvested sea urchin (Paracentrotus lividus) along the western coast of Portugal

Machado

Moura

Pereira

et al. 2019

Invertebrate Biology

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Harvested populations of the sea urchin (Paracentrotus lividus) from the northwestern (Carreço) and southwestern (Aljezur) coasts of Portugal were surveyed to describe the species reproductive cycle and assess possible relationships with geographical location and seawater temperature. Individuals were sampled monthly to analyze gonad histology, mean gonadal index (GI), and gonadosomatic index (GSI) during 2 consecutive years (November 2010–November 2012). Both populations presented an annual reproductive cycle, with synchronous gonad maturation and gamete release between sexes. Gonad maturation occurred throughout autumn–winter, followed by a single but prolonged spawning season during spring–summer. The duration of the spawning season displayed a latitudinal gradient likely related to the north–south increasing trend in seawater temperature, with the northwestern population (Carreço) exhibiting a shorter spawning period compared to the southwestern population (Aljezur). The timing and duration of the spawning season was compared with several populations throughout the distributional range of P. lividus in the Atlantic Ocean and Mediterranean Sea. In the population from Carreço, the size at first sexual maturity (test diameter = 35.9 mm) was considerably smaller than the minimum conservation reference size (MCRS) of 50 mm test diameter legally established for P. lividus. This study confirms that sustainable exploitation depends on harvesters’ awareness of and compliance with the MCRS and provides useful information for the eventual establishment of a closed season in the harvesting of P. lividus.

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Section: Introductionmentioning

confidence: 99%

Reproductive cycle of the commercially harvested sea urchin (Paracentrotus lividus) along the western coast of Portugal

Machado

Moura

Pereira

et al. 2019

Invertebrate Biology

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“…Among the edible species of sea urchin, Paracentrotus lividus (Lamarck, 1816) is highly appreciated by consumers, due to its high roe content. However, this species is threatened by intense capture pressure, which has reduced wild stocks (Bertocci et al., ; FAO, ; Ouréns, Naya, & Freire, ), although the increase in sea water temperature due to climate change has probably contributed to the collapse of P. lividus in the Mediterranean Sea (Yeruham, Rilov, Shpigel, & Abelson, ). This situation has long called for conservation measures.…”

Section: Introductionmentioning

confidence: 99%

Gonad quality of sea urchin Paracentrotus lividus cultured in an offshore pilot-scale trial on the south-east Italian coast

et al. 2018

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A pilot project aimed at testing roe enhancement strategies based on offshore Paracentrotus lividus cultures was conducted off the south‐east coast of Italy (Apulia Region). Adult sea urchins were reared in sea cages located 700 m offshore at a depth of 12 m for 3 months. The animals were fed once a week on two formulated diets, prepared mixing nutrients with agar 20 g/Kg and differing only in terms of the protein source: anchovy flour (Diet A) or krill flour (Diet K). At the end of the rearing trial, the gonad somatic index of sea urchins fed on formulated diets significantly exceeded that of wild sea urchins. Total FAA content in the gonads of wild sea urchins and Diet A‐fed sea urchins was similar, whereas in Diet K‐fed sea urchins it was significantly higher. In terms of fatty acids, the gonads contained SFAs, MUFAs and PUFAs. In visual and sensory assessment of gonads by panel test and electronic nose, the gonads of reared sea urchins were rated as being of better size, while no differences were recorded for coloration, taste and odour. This study shows that under these experimental conditions, commercial‐grade Paracentrotus lividus roe enhancement can be achieved after 3 months in sea cages.

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“…), but is also produced in other countries (Barnes and Crook ; Bertocci et al . ). Furthermore, because they are frequently found in shallow waters, purple sea urchins are also subjected to recreational fishing (Gianguzza et al .…”

Section: Introductionmentioning

confidence: 97%

Faecal contamination of echinoderms: first report of heavy Escherichia coli loading of sea urchins from a natural growing area

Bouchoucha

Piquet

Chavanon

et al. 2016

Letters in Applied Microbiology

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The European regulation requires competent authorities to monitor the sanitary status of shellfish, including live echinoderms, through faecal indicator organisms. In the French Mediterranean, sea urchin production is significant. Until now, as no data showed significant E. coli contamination levels, no monitoring programs focused on this species. This study demonstrates that sea urchins are more vulnerable to faecal contamination than previously hypothesized, especially during heavy rainfall. In consequence, the European authority general approach to microbiological management of shellfish should be applied to sea urchins.

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Multiple effects of harvesting on populations of the purple sea urchin paracentrotus lividus in north Portugal

Cited by 57 publications

References 46 publications

Reproductive cycle of the commercially harvested sea urchin (Paracentrotus lividus) along the western coast of Portugal

Reproductive cycle of the commercially harvested sea urchin (Paracentrotus lividus) along the western coast of Portugal

Gonad quality of sea urchin Paracentrotus lividus cultured in an offshore pilot-scale trial on the south-east Italian coast

Faecal contamination of echinoderms: first report of heavy Escherichia coli loading of sea urchins from a natural growing area

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