caa a22 4500 606228349 CHVBK 20210128101203.0 cr unu---uuuuu 210128e20150201xx s 000 0 eng 10.1007/s10641-014-0303-2 doi (NATIONALLICENCE)springer-10.1007/s10641-014-0303-2 Mass-settlement of the Indian ocean black-tip grouper Epinephelus oceanicus (Lacepède, 1802) in a shallow volcanic habitat following a tropical storm [Elektronische Daten] [Mathieu Pinault, Jean-Pascal Quod, René Galzin] The active selection of recent volcanic habitats by juvenile fish following a cyclone could explain the unusual mass-settlement of the Indian Ocean blacktip grouper Epinephelus oceanicus observed on 25 May 2006, few weeks after tropical storm Diwa on the latest lava flows of the Piton de la Fournaise volcano at Reunion Island. Following a cyclonic depression, shallow underwater habitats are devoid of resident fishes, including predators, favouring juvenile fish survival. Otherwise, the recent origin of the volcanic habitats, which vary in age, could facilitate the spatial segregation of adult and juvenile fish on the lava flows, reducing intraspecific competition and adult aggression toward juveniles. Regional characteristics of larval recruitment could also contribute to the infrequency of the described event; the isolated situation of the island would be expected to result in an average density of fish post-larvae 0.25% to 1% of that seen on some reefs in the Pacific. The supposed origin of juvenile groupers in the neighbouring island of Mauritius should encourage Reunionese managers to look beyond their own jurisdictions to adopt a collaborative approach to conservation of the entire connected network. Springer Science+Business Media Dordrecht, 2014 Cyclone nationallicence Volcanic habitat nationallicence Post-larval recruitment nationallicence Spatial segregation nationallicence Habitat selection nationallicence Connectivity nationallicence Pinault Mathieu USR 3278 CNRS-EPHE, CRIOBE & CBETM, University of Perpignan, 66860, Perpignan, France aut Quod Jean-Pascal Agency for Marine Research and Exploitation (ARVAM), Cyroi, La Technopole, 2 rue Maxime Rivière, 97490, Sainte-Clotilde Reunion Island, France aut Galzin René USR 3278 CNRS-EPHE, CRIOBE & CBETM, University of Perpignan, 66860, Perpignan, France aut Environmental Biology of Fishes Springer Netherlands 98/2(2015-02-01), 705-711 0378-1909 98:2<705 2015 98 10641 https://doi.org/10.1007/s10641-014-0303-2 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 brief-communication jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10641-014-0303-2 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Pinault Mathieu USR 3278 CNRS-EPHE, CRIOBE & CBETM, University of Perpignan, 66860, Perpignan, France aut NATIONALLICENCE 700 1- Quod Jean-Pascal Agency for Marine Research and Exploitation (ARVAM), Cyroi, La Technopole, 2 rue Maxime Rivière, 97490, Sainte-Clotilde Reunion Island, France aut NATIONALLICENCE 700 1- Galzin René USR 3278 CNRS-EPHE, CRIOBE & CBETM, University of Perpignan, 66860, Perpignan, France aut NATIONALLICENCE 773 0- Environmental Biology of Fishes Springer Netherlands 98/2(2015-02-01), 705-711 0378-1909 98:2<705 2015 98 10641