Diversity of Otolith Morphology in Nuchequula nuchalis (Temminck and Schlegel, 1845) Larvae and Juveniles Collected in the Tien Yen Estuary, Northern Vietnam

Authors

  • TA THI THUY Hanoi Metropolitan University, 98 Duong Quang Ham, Cau Giay, Hanoi, Vietnam
  • TRAN DUC HAU Faculty of Biology, Hanoi National University of Education (Hanoi, Vietnam), 136 Xuan Thuy, Cau Giay, Hanoi, Vietnam
  • NGUYEN THI THUY DUNG Faculty of Biology, Hanoi National University of Education (Hanoi, Vietnam), 136 Xuan Thuy, Cau Giay, Hanoi, Vietnam
  • TRAN TRUNG THANH Faculty of Biology, Hanoi National University of Education (Hanoi, Vietnam), 136 Xuan Thuy, Cau Giay, Hanoi, Vietnam

Abstract

Otolith morphological changes in Nuchequula nuchalis larvae and juveniles are described based on 87 specimens of 6.3–37.1 mm body length (BL) collected in the Tien Yen estuary, northern Vietnam. The sagittae and asterisci were the largest and the smallest otolith, respectively. Sagittae were oval-shaped, and showed remarkable changes in morphology with growth. As the sagitta grows the margin becomes sinuated, the excisural notch forms as an acute angle, the sulcus becomes deeper, and the rostrum, antirostrum and postrostrum become clearer. The lapilli are mussel shell-shaped and their shape does not change much throughout the developmental period. In this study, the number of rings on the asterisci did not correspond to those on the sagittae and lapilli for larvae of the same size (~ 12 mm BL).

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Published

2017-04-11

How to Cite

[1]
THUY, T.T., HAU, T.D., DUNG, N.T.T. and THANH, T.T. 2017. Diversity of Otolith Morphology in Nuchequula nuchalis (Temminck and Schlegel, 1845) Larvae and Juveniles Collected in the Tien Yen Estuary, Northern Vietnam. Tropical Natural History. 15, 1 (Apr. 2017), 69–79.

Issue

Vol. 15 No. 1 (2015): April

Section

Original Articles

License

Chulalongkorn University. All rights reserved. No part of this publication may be reproduced, translated, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording or otherwise, without prior written permission of the publisher