Comparison of morphometric characteristics of otolith for ten Clupeid species of the Persian Gulf

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Abstract

Morphometric comparison of sagitta otolith in 10 clupeid species of the Persian Gulf and Oman
Sea including Anodontostoma chacunda, Dussumieria acuta, Dussumieria elopsoides, Ilisha
megaloptera, Ilisha melastoma, Nematolosa nasus, Sardinella gibbosa, Sardinella longiceps,
Sardinella sindensis and Tenualosa ilisha), was conducted during 2007-2008. We found no significant
differences in morphology and morphometry of the left and right otoliths except for A. chacunda and
N. nasus. For the latter species the left sagitta otoliths were used. Investigation of otolith
morphometric characteristics (length, breadth, weight, perimeter, area, and number of scallops) was
also conducted which showed perimeter and number of scallops were the most effective individual
otolith characteristics for distinguishing between species. The study indicated that sagitta otoliths have
particular morphometric characteristics which are useful in identification of these species.
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