La base de ressources documentaires de l'IRD
Publications des scientifiques de l'IRD
Lin M. L., Caruso F., Liu M. M., Lek S., Li K., Gozlan Rodolphe, Li S. H. (2020). Food risk trade-off in the Indo-Pacific humpback dolphin : an exploratory case study. Aquatic Conservation : Marine and Freshwater Ecosystems, [Early Access], [8 p.]. ISSN 1052-7613
| Titre | Food risk trade-off in the Indo-Pacific humpback dolphin : an exploratory case study |
| Année de publication | 2020 |
| Type de document | Article référencé dans le Web of Science WOS:000508641000001 |
| Auteurs | Lin M. L., Caruso F., Liu M. M., Lek S., Li K., Gozlan Rodolphe, Li S. H. |
| Source | Aquatic Conservation : Marine and Freshwater Ecosystems, 2020, [Early Access], p. [8 p.]. p. [8 p.] ISSN 1052-7613 |
| Résumé | Based on optimal foraging theory, animals are expected to maximize foraging benefits whilst minimizing risks. Despite risking being subjected to anthropogenic impacts such as water contamination, marine traffic, and underwater noise, estuaries have been identified as the preferred habitat of the Indo-Pacific humpback dolphin (Sousa chinensis, IPHD). However, it remains unclear why this vulnerable species favours such risky habitats. Here, an exploratory case study in Zhanjiang estuary, China, was conducted to test the hypothesis that IPHDs select estuarine habitats as a trade-off that maximizes foraging opportunities whilst minimizing the risk of mortality. The results showed that IPHDs accept greater mortality risks for higher food rewards but select habitats with lower risks when food rewards are similar between two locations. Although this type of information is important for underpinning models for individual dolphins, its principal role is to show environmental protection agencies why IPHDs favour estuaries despite the increased mortality risks. Habitat conservation plans should carefully consider prey stocks, possibly through the presence of marine protected areas near estuaries, as local overfishing may lead vulnerable cetacean populations to take greater risks. |
| Plan de classement | Ecologie, systèmes aquatiques [036] ; Limnologie biologique / Océanographie biologique [034] ; Ressources halieutiques [040] |
| Descr. géo. | CHINE ; ZHANJIANG ESTUAIRE ; PACIFIQUE |
| Localisation | Fonds IRD [F B010077813] |
| Identifiant IRD | fdi:010077813 |
| Lien permanent | http://www.documentation.ird.fr/hor/fdi:010077813 |
Export des données
Disponibilité des documents
fichier PDF téléchargeable
lien chez l'éditeur
en accès réservé
en libre accès sur HAL
Accès aux documents originaux :
- IRD France Nord
Centre de documentation
32 avenue Henri Varagnat
F 93143 Bondy cedex - documentation.bondy@ird.fr
|
Accès direct Espace intranet IST (accès réservé) |
Services Horizon |
Centres de documentation |