Scale of gonad maturity stages of Jack mackerel Trachurus murphyi Nichols 1920

Authors

  • Javier Sánchez Instituto del Mar del Perú (IMARPE), esquina Gamarra y General Valle, S/N Chucuito, Callao, Perú.
  • Ángel Perea Instituto del Mar del Perú (IMARPE), esquina Gamarra y General Valle, S/N Chucuito, Callao, Perú.
  • Betsy Buitrón Instituto del Mar del Perú (IMARPE), esquina Gamarra y General Valle, S/N Chucuito, Callao, Perú.
  • Liz Romero Instituto del Mar del Perú (IMARPE), esquina Gamarra y General Valle, S/N Chucuito, Callao, Perú.

DOI:

https://doi.org/10.15381/rpb.v20i1.2617

Keywords:

Jack mackerel, Trachurus murphyi, pelagic, Peruvian fishery, Conservation, fisheries management, legal regulations pelagic

Abstract

This paper describes the macroscopic scale of gonad maturity stages of Jack mackerel Trachurus murphyNichols 1920, validated by microscopic studies, and being used in Peru,. A scale of six maturity stages are identified for females and males, ranging from stage 0 (virgin) to stage V (recovery in females, post-spermiation in males). The gonads of 350 specimens were analyzed. These specimens were collected as part of a pelagic fishery monitoring programme and during pelagic stock assessment surveys between 2006 and 2009. Virgin individuals are classified as stage 0 (virgin), which draws the distinction between (non-reproductive) juveniles and (reproductive) adults in stages I to V. The advantages of using the validated stages of gonad development of Jack mackerel T. murphyiare discussed and are compared to other scales of maturity stages proposed for other species in the same family. The analysis of the microscopic characteristics of the ovaries confirms that Jack mackerel is a batch spawner, which has already been described by other authors.

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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 Javier Sánchez, Ángel Perea, Betsy Buitrón, Liz Romero

Creative Commons License

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

AUTHORS RETAIN THEIR RIGHTS:

a. Authors retain their trade mark rights and patent, and also on any process or procedure described in the article.

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

Sánchez, Javier, Ángel Perea, Betsy Buitrón, and Liz Romero. 2013. “Scale of Gonad Maturity Stages of Jack Mackerel Trachurus Murphyi Nichols 1920”. Revista Peruana De Biología 20 (1): 035-044. https://doi.org/10.15381/rpb.v20i1.2617.