First record of Siganus randalli (Teleost, Siganidae) in New Caledonia, and comments on its diet

Type Article
Date 2016-12
Language English
Author(s) Moleana Thibaud1, 3, 4, Della Patrona Luc2, Meziane Tarik3, Letourneur Yves1
Affiliation(s) 1 : Laboratoire LIVE et LABEX « Corail », Université de la Nouvelle-Calédonie, BP R4, Nouméa 98851, New Caledonia
2 : Ifremer LEAD-NC, 101 Promenade Roger Laroque, Nouméa BP 2059, 98846, New Caledonia.
3 : UMR BOREA 7208, MNHN/CNRS/UPMC/IRD, 61 rue Buffon, Paris Cedex 5 CP 53, 75231, France
4 : Aqualagon SARL, BP 2525 Mont-Dore, Nouméa 98800, New Caledonia.
Source Marine Biodiversity Records (1755-2672) (Springer Nature), 2016-12 , Vol. 9 , N. 81 , P. 1-5
DOI 10.1186/s41200-016-0082-x
Keyword(s) Variegated rabbitfish, Diet, Stomach content, Isotope, SW pacific
Abstract Background

Most of the 29 Siganidae species are widely distributed through the Indo-Pacific area. In New Caledonia, these family was represented by 12 species. The present report is the first record of Siganus randalli in New Caledonian waters and provide information on its diet.

Three specimens of Siganus randalli were caught in shallow mangrove waters of the southern part of New Caledonia. Their stomach contents and isotopic signatures (carbon and nitrogen) were analyzed and compared to others siganids species.
Results and conclusion

This note provides the most southerly record of the rabbitfish Siganus randalli, which extends its distribution range by 1200 km southward and 1300 km southwest. The data on its diet, when compared with other co-occurring or more reef-associated siganid species, provide information on feeding processes and ecological functions associated with its mangrove habitat.
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