Natural diet of the pink spiny lobster, Palinurus mauritanicus (Malacostraca, Decapoda, Palinuridae), from the Algerian west coast
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Abstract
The pink spiny lobster, Palinurus mauritanicus Gruvel, 1911 is a target species of commercial fisheries along the Algerian west coast. To better understand the natural diet of a population of P. mauritanicus, a study was conducted between June 2021 and May 2022, which aimed to compare the consumed food items based on sex, seasonality, and body size. This approach involved analysing stomach contents and determining ingested prey, with seasonal sampling conducted at three main fishing ports (Béni Saf, Bouzedjar and Oran). The results showed that fish (in general “Pisces”, but only Osteichthyes retrieved) (46.42%), Crustacea (34.28%), Annelida Polychaeta (23.33%), and Mollusca (18.57%) were the major components of the lobster’s diet. Echinodermata (8.57%), Porifera (2.38%) and Bryozoa (0.95%) were classified as minor groups. We also showed that sex and season affected the prey items consumed by the lobster. Based on the vacuity index, the pink spiny lobster was found to be feeding intensively in spring and decreasingly so in summer, autumn and winter. These results indicate that the pink spiny lobster is to be characterized as an omnivorous generalist and opportunist.
Résumé
La langouste rose Palinurus mauritanicus Gruvel, 1911 est une espèce cible des pêcheries commerciales le long de la côte ouest algérienne. Pour mieux comprendre son régime alimentaire naturel, une étude a été menée entre juin 2021 et mai 2022, visant à comparer les aliments consommés en fonction du sexe, des saisons et de la taille corporelle. Cette approche se base sur l’analyse du contenu stomacal et la détermination des proies ingérées, suite à un échantillonnage saisonnier réalisé dans trois principaux ports de pêche (Béni Saf, Bouzedjar et Oran). Les résultats ont montré que les poissons (seulement Osteichthyes retrouvés) (46,42%), les crustacés (34,28%), les annélides polychètes (23,33%) et les mollusques (18,57%) constituent les principales composantes du régime alimentaire de la langouste rose. Les échinodermes (8,57%), les spongiaires (2,38%) et les bryozoaires (0,95%) constituent des proies accidentelles. L’étude a montré que le sexe et la saison affectaient les proies consommées. L’indice de vacuité a démontré que la langouste rose se nourrit intensément au printemps et de moins en moins en été, en automne et en hiver. Ces résultats indiquent que la langouste rose est un omnivore opportuniste.
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Baaloudj, A., S. Ouarab, A. Kerfouf, M. Bouriach, A. Hussein, A. C. Hammana & H. N. Djeneba, 2020. Use of macro invertebrates to assess the quality of Seybouse River (north-east of Algeria). Ukr. J. Ecol., 10(4): 60-66.
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Benallal, A. M., A. Baaloudj, A. Kerfouf, M. A. Bouzidi & K. Belhadj Tahar, 2020. Natural diet of deep-water rose shrimp in the Beni-Saf Bay (western Algeria). Ukr. J. Ecol., 10: 109-115.
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Bensahla Talet, L., A. Bensahla Talet & Z. Boutiba, 2016. Some population characteristics of the pink spiny lobster, Palinurus mauritanicus Gruvel, 1911 caught in the Béni-Saf Bay (western Algeria). Ege J. Fish. Aquat. Sci., 33: 7-11. DOI:10.12714/egejfas.2016.33.1.02.
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| All Time | Past 365 days | Past 30 Days | |
|---|---|---|---|
| Abstract Views | 813 | 606 | 37 |
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Natural diet of the pink spiny lobster, Palinurus mauritanicus (Malacostraca, Decapoda, Palinuridae), from the Algerian west coast
In: CrustaceanaSearch for other papers by Affef Baaloudj in
Current site
Google Scholar
PubMed
Search for other papers by Ahmed Kerfouf in
Current site
Google Scholar
PubMed
Abstract
The pink spiny lobster, Palinurus mauritanicus Gruvel, 1911 is a target species of commercial fisheries along the Algerian west coast. To better understand the natural diet of a population of P. mauritanicus, a study was conducted between June 2021 and May 2022, which aimed to compare the consumed food items based on sex, seasonality, and body size. This approach involved analysing stomach contents and determining ingested prey, with seasonal sampling conducted at three main fishing ports (Béni Saf, Bouzedjar and Oran). The results showed that fish (in general “Pisces”, but only Osteichthyes retrieved) (46.42%), Crustacea (34.28%), Annelida Polychaeta (23.33%), and Mollusca (18.57%) were the major components of the lobster’s diet. Echinodermata (8.57%), Porifera (2.38%) and Bryozoa (0.95%) were classified as minor groups. We also showed that sex and season affected the prey items consumed by the lobster. Based on the vacuity index, the pink spiny lobster was found to be feeding intensively in spring and decreasingly so in summer, autumn and winter. These results indicate that the pink spiny lobster is to be characterized as an omnivorous generalist and opportunist.
Résumé
La langouste rose Palinurus mauritanicus Gruvel, 1911 est une espèce cible des pêcheries commerciales le long de la côte ouest algérienne. Pour mieux comprendre son régime alimentaire naturel, une étude a été menée entre juin 2021 et mai 2022, visant à comparer les aliments consommés en fonction du sexe, des saisons et de la taille corporelle. Cette approche se base sur l’analyse du contenu stomacal et la détermination des proies ingérées, suite à un échantillonnage saisonnier réalisé dans trois principaux ports de pêche (Béni Saf, Bouzedjar et Oran). Les résultats ont montré que les poissons (seulement Osteichthyes retrouvés) (46,42%), les crustacés (34,28%), les annélides polychètes (23,33%) et les mollusques (18,57%) constituent les principales composantes du régime alimentaire de la langouste rose. Les échinodermes (8,57%), les spongiaires (2,38%) et les bryozoaires (0,95%) constituent des proies accidentelles. L’étude a montré que le sexe et la saison affectaient les proies consommées. L’indice de vacuité a démontré que la langouste rose se nourrit intensément au printemps et de moins en moins en été, en automne et en hiver. Ces résultats indiquent que la langouste rose est un omnivore opportuniste.
| All Time | Past 365 days | Past 30 Days | |
|---|---|---|---|
| Abstract Views | 813 | 606 | 37 |
| Full Text Views | 10 | 7 | 3 |
| PDF Views & Downloads | 16 | 3 | 0 |
