Spiny lobster predation of barrens‐forming sea urchins is not limited by body size, but may be overstated
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Le résumé fourni par la source
Abstract Worldwide, lobsters are considered key predators that control urchin populations. It has been widely reported that lobster size plays a significant role in the size of urchins they feed on, as does the size of the urchin. Generally, it is thought that small palinurid “spiny” lobsters measuring less than 120 mm carapace length (CL) are morphologically incapable of eating urchins, while large lobsters are voracious predators. Urchin size is expected to affect predation with larger urchins of greater than 90 mm test diameter (TD) presenting the most difficult prey. These generalities, however, have not been quantitatively tested for the eastern spiny lobster Sagmariasus verreauxi and recently the accepted size paradigm for lobsters eating urchins has come into question. The aim of this study was to assess whether lobster predation on urchins would differ with urchin size or species, or the size of lobster. Our results indicate that S. verreauxi does not fit the common lobster patterns regarding urchin predation. There were generally low rates of predation and a significant negative relationship between feeding and both lobster size and urchin size. We found that small lobsters were capable urchin predators with a higher likelihood of eating urchins than larger lobsters, which were more reluctant predators. While we did find the expected effect of smaller urchins being significantly more vulnerable prey, there was none of the expected size limitations for small lobsters eating large urchins and predation did not differ between urchin species, indicating that this was a general pattern. Overall, we observed low rates of predation, suggesting that either S. verreauxi may not be a key urchin predator like other lobster species elsewhere, or that small lobsters are underestimated as urchin predators in temperate marine ecosystems.
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Le contrôle bibliographique ouvert
DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.
- Titre Crossref
- Spiny lobster predation of barrens‐forming sea urchins is not limited by body size, but may be overstated
- Date Crossref
- 01/08/2024
- Éditeur
- Wiley
- Type
- journal-article
Ce recoupement confirme des métadonnées liées au DOI. Il ne confirme ni la méthode ni les conclusions de l’étude, et il ne compte pas comme une seconde source scientifique indépendante.
Où se fait cette recherche
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Hunter Water pays non établi dans la noticeInstitution
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University of Wollongong pays non établi dans la noticeUniversité ou école supérieure
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New South Wales Department of Primary Industries pays non établi dans la noticeOrganisme public
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School of Environmental and Life Sciences pays non établi dans la noticeUniversité ou école supérieure
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Fisheries Research pays non établi dans la noticeInstitution
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School of Earth pays non établi dans la noticeUniversité ou école supérieure
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Port Stephens Fisheries Institute pays non établi dans la noticeStructure de recherche
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Deceased pays non établi dans la noticeInstitution
Hunter Water, University of Wollongong et New South Wales Department of Primary Industries, avec 5 autres affiliations.
Une affiliation ne permet pas de déduire la nationalité d’un auteur.