Age, Growth and Sex Ratio of the Azorean Rock-Pool Blenny, Parablennius Sanguinolentus Parvicornis


Santos, Ricardo Serrão, Nash, Richard D.M. and Hawkins, Stephen J. (1995) Age, Growth and Sex Ratio of the Azorean Rock-Pool Blenny, Parablennius Sanguinolentus Parvicornis. Journal of the Marine Biological Association of the United Kingdom, 75, (03), 751-754. (doi:10.1017/S0025315400039175).

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Description/Abstract

The age and population structure of Parablennius sanguinolentus parvicornis (Valenciennes) (Pisces: Blenniidae) from the Azores have been studied. Total length and weight relationships are given for each sex. Age study was based on otoliths readings. The von Bertalanffy growth function was applied to describe the growth in total length with age. At the end of the first year mean (±SD) total length was significantly different in males (7.1 ±1.5 cm) and females (6.1 ±1.2 cm). One-year-old males participate in reproduction as satellites, whereas females do not. The implications of this in early growth rate of the males is discussed. During the two most important months of the reproductive season (i.e. June and July), the sex ratio was significantly biased towards males, particularly in the larger size classes.

Item Type: Article
ISSNs: 0025-3154 (print)
1469-7769 (electronic)
Subjects: G Geography. Anthropology. Recreation > GC Oceanography
Q Science > QH Natural history > QH301 Biology
Divisions: University Structure - Pre August 2011 > School of Ocean & Earth Science (SOC/SOES)
ePrint ID: 188807
Date Deposited: 27 May 2011 14:10
Last Modified: 27 Mar 2014 19:42
URI: http://eprints.soton.ac.uk/id/eprint/188807

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