Sarpédonti V. auteur aut IRD Ponton Dominique auteur aut IRD Chong Ving Ching auteur aut IRD text journalArticle eng text/pdf reformatted digital access The morphology of the digestive system was usefull to distinguish the larvae of Stolephorus baganensis and Thryssa kammalensis before the full development of their dorsal and anal fins. The relative positions of these fins, the length of the anal fin, and body depth, were good criteria for identifying individuals greater than 10.0 mm Ls. For both species, the relative growth of the ten morphometric characters studied was best explained by linear piecewise regressions indicating inflection in allometry at specific standard lengths. Most of these sudden changes in growth rate occurred between 6.9 and 10.0 mm Ls for S. baganensis and between 5.8 to 8.9 mm Ls for T. kammalensis. Double-centred principal component analysis (PCA) confirmed important changes in the external morphology of both species during this transition period. Prior to this period, the main parameters characterizing the global morphological changes of both species were the length and position of dorsal and anal fins whereas they were body depth and eye diameter (only in S. baganensis) for larger specimens. Complete development of scales did not appear as a suitable criterion to define the end of the larval period, which, instead, was set at the size at which larvae presented an adult-like pigmentation (respectively 35.0 mm Ls and 55.0 mm Ls in S. baganensis and T. kammalensis). (Résumé d'auteur) specialized POISSON MARIN MORPHOLOGIE ONTOGENESE CROISSANCE ALLOMETRIE LARVE ANALYSE EN COMPOSANTES PRINCIPALES DISTRIBUTION SPATIALE HABITAT ESTUAIRE ZONE TROPICALE MELANESIE 034BIOVER01 56 1460-1476 2000 0022-1112 https://www.documentation.ird.fr/hor/fdi:010022307 10.1006/jfbi.2000.1273 0022-1112 [F B010022307] https://www.documentation.ird.fr/hor/fdi:010022307 https://horizon.documentation.ird.fr/exl-doc/pleins_textes/pleins_textes_7/b_fdi_55-56/010022307.pdf IRD - Base Horizon / Pleins textes 2000-08-02 2018-07-10 fdi:010022307 fre