Reproductive cycle of the blue jack mackerel, Trachurus picturatus (Bowdich, 1825), off the Portuguese continental coast

Date 2019
Temporal extent 2010-01 -2016-12
Author(s) Costa Ana MariaORCID1
Affiliation(s) 1 : Instituto Português do Mar e da Atmosfera (IPMA), Av. Doutor Alfredo Magalhães Ramalho, nº 6, 1495-165 Lisbon, Portugal
DOI 10.17882/60664
Publisher SEANOE
Abstract

This work provides for the first time a description of the reproductive biology of Trachurus picturatus in Portuguese continental waters (between 41º 49' and 36º 57' latitude North). Fish samples, a total of 7409 individuals, between 17.8 cm and 44.3 cm total length, were obtained by bottom trawlers operating on the north western coast of Portugal, between January 2010 and December 2016. The observed sex ratio (♂/♀) was 0.56. Gonads were observed macroscopically and the monthly variations in gonadosomatic index, proportion of actively spawning individuals, hepatosomatic index and Fulton’s condition factor were analysed. Lengths at first maturity couldn’t be determined due to the lack of small fish. Our results seem to indicate that the main spawning season of T. picturatus starts in December and extends until April-May, with a peak in March.

Licence CC-BY-ND
Utilisation Data are published without any warranty, express or implied. The user assumes all risk arising from his/her use of data. Data are intended to be research-quality and include estimates of data quality and accuracy, but it is possible that these estimates or the data themselves contain errors. It is the sole responsibility of the user to assess if the data are appropriate for his/her use, and to interpret the data, data quality, and data accuracy accordingly. Authors welcome users to ask questions and report problems.
Acknowledgements The author is grateful to Georgina Correia e Diana Feijó that along the years have performed the biological sampling that made this work possible.
Data
File Size Format Processing Access
64161.csv 243 KB CSV Quality controlled data Open access
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How to cite 

Costa Ana Maria (2019). Reproductive cycle of the blue jack mackerel, Trachurus picturatus (Bowdich, 1825), off the Portuguese continental coast. SEANOE. https://doi.org/10.17882/60664


In addition to properly cite this dataset, it would be appreciated that the following work(s) be cited too, when using this dataset in a publication :


Ana Costa (2019). Reproductive cycle of the blue jack mackerel, Trachurus picturatus (Bowdich, 1825), off the Portuguese continental coast. Accepted in Aquatic Living Resources