The costs and healing rates of minor injuries in neonatal reef sharks
2025
Debaere, Shamil | Weideli, Ornella | Daly, Ryan | Milanesi, Elena | Trujillo, José | Bouyoucos, Ian | Mourier, Johann | Chin, Andrew | Planes, Serge | de Boeck, Gudrun | Rummer, Jodie | University of Antwerp (UA) | School of marine and tropical biology (Townsville, Australie) ; James Cook University (JCU) | Centre de recherches insulaires et observatoire de l'environnement (CRIOBE) ; Université de Perpignan Via Domitia (UPVD)-École Pratique des Hautes Études (EPHE) ; Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Centre National de la Recherche Scientifique (CNRS) | D'Arros Research Centre, Save Our Seas Foundation (SOSF-DRC) | SOUTH AFRICAN INSTITUTE FOR AQUATIC BIODIVERSITY GRAHAMSTOWN ZAFic Biodiversity, Grahamstown South-Africa ; Partenaires IRSTEA ; Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA) | Oceanographic research institute (ORI) | Department of Earth and Environmental Sciences [Milano] ; Università degli Studi di Milano-Bicocca = University of Milano-Bicocca (UNIMIB) | Department of Marine Sciences [Dunedin] ; University of Otago [Dunedin, Nouvelle-Zélande] | ARC Centre of Excellence for Coral Reef Studies (CoralCoE) ; James Cook University (JCU) | MARine Biodiversity Exploitation and Conservation - MARBEC (UMR MARBEC) ; Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM) | Centre for Sustainable Tropical Fisheries and Aquaculture ; James Cook University (JCU) | Laboratoire d'Excellence CORAIL (LabEX CORAIL) ; Institut de Recherche pour le Développement (IRD)-Université des Antilles et de la Guyane (UAG)-École des hautes études en sciences sociales (EHESS)-École Pratique des Hautes Études (EPHE) ; Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de La Réunion (UR)-Université de la Polynésie Française (UPF)-Université de la Nouvelle-Calédonie (UNC)-Institut d'écologie et environnement-Université des Antilles (UA)
International audience
Mostrar más [+] Menos [-]Inglés. Elasmobranch fishes (i.e., sharks, skates, and rays) exhibit remarkable wound‐healing capabilities and consistently maintain a high capacity for tissue regeneration throughout their lives. This high capacity for wound healing may be particularly important for neonatal elasmobranchs that are still developing their immune system. However, little is known about the costs associated with wound healing and the potential influence of environmental variables or life history. In this study, we explore (1) the impact of minor, external injuries on the growth and body condition of neonatal blacktip reef ( Carcharhinus melanopterus ) and sicklefin lemon ( Negaprion acutidens ) sharks using a long‐term fisheries‐independent dataset from Moorea, French Polynesia, (2) the influence of ambient temperature on healing rates in neonatal blacktip reef sharks at two experimental temperatures (25°C and 29°C), and (3) variations in umbilical wound‐healing rates between blacktip reef and sicklefin lemon sharks using an additional long‐term dataset from St. Joseph Atoll, Seychelles. We found no impact of minor, external injuries on growth and body condition in neonatal blacktip reef and sicklefin lemon sharks, accelerated umbilical wound healing in neonatal blacktip reef sharks exposed to elevated ambient temperatures, and distinct umbilical wound‐healing rates between neonatal blacktip reef and sicklefin lemon sharks. Enhancing our understanding of sharks' healing capabilities and the influence of environmental factors on this process is crucial for informing handling practices aimed at improving post‐release survival rates of captured sharks under current and future oceanic conditions.
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