Reproductive biology of 58 fish species around La Réunion Island (Western Indian Ocean): first sexual maturity and spawning period

Type Article
Date 2024
Language English
Author(s) Mahe KeligORCID1, Taconet Julien1, 2, Brisset Blandine2, Gentil Claire2, Aumond Yoann2, Evano Hugues2, Wambergue Louis2, Elleboode Romain1, Rungassamie Tévamie3, Roos DavidORCID2
Affiliation(s) 1 : Unité HMMN, IFREMER, Laboratory of Fisheries, Boulogne-sur-Mer 62321, France
2 : Délégation Océan Indien, IFREMER Institute, La Réunion 97822, France
3 : Réserve Naturelle Marine de La Réunion, La Réunion 97822, France
Source Journal of Animal Reproduction and Biotechnology (2671-4663) (he Korean Society of Animal Reproduction and Biotechnology.), 2024 , Vol. 39 , N. 1 , P. 31-39
DOI 10.12750/JARB.39.1.31
Keyword(s) gonad observation, reproduction period, reproductive maturity stages, size at the first sexual maturity
Abstract

Background:

The biological information of fish, which include reproduction, is the prerequisite and the basis for the assessment of fisheries.

Methods:

The aim of this work was to know the reproductive biology with the first sexual maturity (TL50) and the spawning period for 58 mainly fish species in the waters around La Réunion Island (Western Indian Ocean). Twenty families belonging to the Actinopterygii were represented (acanthuridae, berycidae, bramidae, carangidae, cirrhitidae, gempylidae, holocentridae, kyphosidae, labridae, lethrinidae,  lutjanidae, malacanthidae, monacanthidae, mullidae, polymixiidae, pomacentridae, scaridae, scorpaenidae, serranidae, sparidae; 56 species; n = 9,751) and two families belonging to the Elasmobranchii (squalidae, centrophoridae; 2 species; n = 781) were sampled.

Between 2014 and 2022, 10,532 individuals were sampled covering the maximum months number to follow the reproduction periods of these species.

Results:

TL50 for the males and the females, respectively, ranged from 103.9 cm (Acanthurus triostegus ) to 1,119.3 cm (Thyrsitoides marleyi ) and from 111.7 cm (A. triostegus ) to 613.1 cm (Centrophorus moluccensis ). The reproduction period could be very different between the species from the very tight peak to a large peak covered all months.

Conclusions:

Most species breed between October and March but it was not the trend for all species around La Réunion Island.
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How to cite 

Mahe Kelig, Taconet Julien, Brisset Blandine, Gentil Claire, Aumond Yoann, Evano Hugues, Wambergue Louis, Elleboode Romain, Rungassamie Tévamie, Roos David (2024). Reproductive biology of 58 fish species around La Réunion Island (Western Indian Ocean): first sexual maturity and spawning period. Journal of Animal Reproduction and Biotechnology, 39(1), 31-39. Publisher's official version : https://doi.org/10.12750/JARB.39.1.31 , Open Access version : https://archimer.ifremer.fr/doc/00885/99683/