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- Publisher
- Oxford University Press
- Copyright
- Copyright © 2015 The Malacological Society of London
- ISSN
- 0260-1230
- eISSN
- 1464-3766
- DOI
- 10.1093/mollus/62.3.359
- Publisher site
- See Article on Publisher Site
Abstract
Age composition and growth rates of the squid Loligo vulgaris (Lamark, 1797) were studied by examination of growth increments within statohths of 419 specimens (mantle length, ML, ranging from 32 to 400 mm). The squid were obtained by monthly sampling from the catches of commercial trawls off southern Portugal between March and September, 1993 The total number of growth increments in the mounted and ground statohths was counted using a semi-automatic image analysis system. ML was significantly correlated with both the statolith length, TSL and the number of increments, NI. The female statolith was slightly larger than the male statolith for the same mantle size. Growth rates of individuals showed high variability with an average estimated at 34.6 mm month −1 for males and 33.5 mm month −1 for females. Growth in length between 70 and 280 days was best described by a power function for both sexes. The growth index of the statolith (TSL/NI) decreased with individual growth. This result may be related with the onset of sexual maturation. L. vulgaris hatched throughout the year with two distinct peaks, in spring which is the mam breeding period, and in autumn. The life cycle of the L. vulgaris population on the south Portuguese shelf was completed in one year © The Malacological Society of London « Previous | Next Article » Table of Contents This Article J. Mollus. Stud. (1996) 62 (3): 359-366. doi: 10.1093/mollus/62.3.359 » Abstract Free Full Text (PDF) Free Classifications Articles Services Article metrics Alert me when cited Alert me if corrected Find similar articles Similar articles in Web of Science Add to my archive Download citation Request Permissions Citing Articles Load citing article information Citing articles via CrossRef Citing articles via Scopus Citing articles via Web of Science Citing articles via Google Scholar Google Scholar Articles by BETTENCOURT, V. Articles by GUERRA, A. 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Journal
Journal of Molluscan Studies – Oxford University Press
Published: Aug 26, 1996
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