Horizon / Plein textes La base de ressources documentaires de l'IRD

IRD

Publications des scientifiques de l'IRD

Van Wynsberge S., Andréfouët Serge, Gaertner-Mazouni N., Wabnitz C. C. C., Menoud M., Le Moullac G., Levy P., Gilbert A., Remoissenet G. (2017). Growth, survival and reproduction of the giant clama Tridacna maxima (Roding 1798, Bivalvia) in two contrasting lagoons in French Polynesia. Plos One, 12 (1), e0170565 [20 p.]. ISSN 1932-6203

Fichier PDF disponible http://horizon.documentation.ird.fr/exl-doc/pleins_textes/divers17-03/010069309.pdf

Lien direct chez l'éditeur doi:10.1371/journal.pone.0170565

Titre
Growth, survival and reproduction of the giant clama Tridacna maxima (Roding 1798, Bivalvia) in two contrasting lagoons in French Polynesia
Année de publication2017
Type de documentArticle référencé dans le Web of Science WOS:000396160500028
AuteursVan Wynsberge S., Andréfouët Serge, Gaertner-Mazouni N., Wabnitz C. C. C., Menoud M., Le Moullac G., Levy P., Gilbert A., Remoissenet G.
SourcePlos One, 2017, 12 (1), p. e0170565 [20 p.]. p. e0170565 [20 p.] ISSN 1932-6203
RésuméShell growth, reproduction, and natural mortality of the giant clam Tridacna maxima were characterized over a two-year-period in the lagoon of the high island of Tubuai (Austral Archipelago) and in the semi-closed lagoon of Tatakoto (Tuamotu Archipelago) in French Polynesia. We also recorded temperature, water level, tidal slope, tidal range, and mean wave height in both lagoons. Lower lagoon aperture and exposure to oceanic swells at Tatakoto than at Tubuai was responsible for lower lagoon water renewal, as well as higher variability in temperature and water level at Tatakoto across the studied period. These different environmental conditions had an impact on giant clams. Firstly, spawning events in the lagoon of Tatakoto, detected by gonad maturity indices in June and July 2014, were timed with high oceanic water inflow and a decrease in lagoon water temperature. Secondly, temperature explained differences in shell growth rates between seasons and lagoons, generating different growth curves for the two sites. Thirdly, local mortality rates were also found to likely be related to water renewal patterns. In conclusion, our study suggests that reef aperture and lagoon water renewal rates play an integral role in giant clam life history, with significant differences in rates of shell growth, mortality and fertility found between open versus semi-closed atoll lagoons in coral reef ecosystems.
Plan de classementRessources halieutiques [040] ; Ecologie, systèmes aquatiques [036]
Descr. géo.POLYNESIE FRANCAISE
LocalisationFonds IRD [F B010069309]
Identifiant IRDfdi:010069309
Lien permanenthttp://www.documentation.ird.fr/hor/fdi:010069309

Export des données

Disponibilité des documents

Télechargment fichier PDF téléchargeable

Lien sur le Web lien chez l'éditeur

Accès réservé en accès réservé

HAL en libre accès sur HAL


Accès aux documents originaux :

Accès direct

Bureau du chercheur

Site de la documentation

Espace intranet IST (accès réservé)

Suivi des publications IRD (accès réservé)

Mentions légales

Services Horizon

Poser une question

Consulter l'aide en ligne

Déposer une publication (accès réservé)

S'abonner au flux RSS

Voir les tableaux chronologiques et thématiques

Centres de documentation

Bondy

Montpellier (centre IRD)

Montpellier (MSE)

Nouméa

Papeete

Niamey

Ouagadougou

Tunis

La Paz

Quito