Age and growth of Jack mackerel Trachurus murphyi in Peru

Authors

  • Teobaldo Dioses Instituto del Mar del Perú (IMARPE), esquina Gamarra y General Valle, S/N Chucuito, Callao, Perú.

DOI:

https://doi.org/10.15381/rpb.v20i1.2618

Keywords:

Age, growth, otoliths, Jack mackerel, Trachurus murphyi, pelagic, Peruvian fishery

Abstract

The age and growth of Jack mackerel Trachurus murphyiNichols 1920 was determined by the reading and measuring annual growth rings from 977 pairs of otoliths from specimens between 3 and 71 cm total length collected within the Peruvian maritime domain during 1978 and part of 1977 and 1979. The validity of the annual marks was confirmed with 50 otolith with 5 marks or annual zones, and also with the analysis of the monthly marginal increment in 240 otoliths of specimens between 35 and 39 cm obtained from July 1977 to June 1979. From the annual rings measurements and their respective retroestimated sizes, the following parameters of the von Bertalanfy ecuation for growth in length and weight were estimated: infinite length (L ∞ ) = 80.77 cm, infinite weight (W∞ ) = 3744.10 g, growth coefficient (k) = 0.155, and theoretical age at length 0 (t 0 ) = –0.356. The estimated parameters suggest that the Peruvian T. murphyi has a faster growth rate than the more southern T. murphyi.

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Published

04/15/2013

Issue

Vol. 20 No. 1 (2013)

Section

BIOLOGY OF JACK MACKEREL (Trachurus murphyi) IN PERU

License

Copyright (c) 2013 Teobaldo Dioses

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This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.

AUTHORS RETAIN THEIR RIGHTS:

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b. Authors retain their right to share, copy, distribute, perform and publicly communicate their article (eg, to place their article in an institutional repository or publish it in a book), with an acknowledgment of its initial publication in the Revista Peruana de Biologia.

c. Authors retain theirs right to make a subsequent publication of their work, to use the article or any part thereof (eg a compilation of his papers, lecture notes, thesis, or a book), always indicating its initial publication in the Revista Peruana de Biologia (the originator of the work, journal, volume, number and date).

How to Cite

Dioses, Teobaldo. 2013. “Age and Growth of Jack Mackerel Trachurus Murphyi in Peru”. Revista Peruana De Biología 20 (1): 045-052. https://doi.org/10.15381/rpb.v20i1.2618.