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Interpretation of otolith microstructure in the early life history stages of two temperate reef wrasses (Labridae)

Citation

Welsford, D, Interpretation of otolith microstructure in the early life history stages of two temperate reef wrasses (Labridae), Marine and Freshwater Research, 54, (1) pp. 69-75. ISSN 1323-1650 (2003) [Refereed Article]

DOI: doi:10.1071/MF02018

Abstract

Notolabrus fucicola and N. tetricus larvae were reared in the laboratory at a constant temperature of 11°C; both species hatched after 4 days. Mortality was high throughout the post-hatching stage, with no N. tetricus surviving beyond 24 hours post-hatching. Notolabrus fucicola late yolk sac larvae showed no clear incremental structure in their sagittal otoliths up to 9 days post-hatch. The radius of the sagittae of these late yolk sac larvae corresponded with the radius of a non-incremental region around the primordium of sagittae taken from post-settlement juveniles of both species captured in the wild. Therefore, it is likely that the first increment is formed at or near yolk sac absorption in these species. Post-settlement juveniles of both species were exposed to oxytetracycline (OTC) and held in aquaria for up to 33 days. Post-OTC increment counts showed that increments were formed daily in the sagittae of both species.

Item Details

Item Type:Refereed Article
Research Division:Biological Sciences
Research Group:Zoology
Research Field:Animal Structure and Function
Objective Division:Environment
Objective Group:Flora, Fauna and Biodiversity
Objective Field:Marine Flora, Fauna and Biodiversity
Author:Welsford, D (Dr Dirk Welsford)
ID Code:28478
Year Published:2003
Web of Science® Times Cited:7
Deposited By:TAFI - Marine Research Laboratory
Deposited On:2003-08-01
Last Modified:2004-04-07
Downloads:0

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