Aquat. Living Resour.
Volume 32, 2019
|Number of page(s)||12|
|Published online||15 March 2019|
Age and growth estimates of the jumbo flying squid (Dosidicus gigas) off Peru
Instituto del Mar del Perú, Esquina Gamarra y General Valle s/n,
2 Centro de Investigaciones Biológicas del Noroeste S.C., Av. Instituto Politécnico Nacional 195, Col. Playa Palo de Santa Rita Sur, CP 23096, La Paz, Baja California Sur, México
3 Instituto Nacional de Pesca y Acuacultura-Ensenada, Km 97.5 Carretera Tijuana Ensenada s/n, El Sauzal de Rodríguez, CP 22760, Ensenada, Baja California, México
4 Instituto Nacional de Pesca y Acuacultura-Mazatlán, Avenida Camarón Sábalo S/N, Estero del Yugo, CP 8 2000, Sinaloa, México
* Corresponding author: email@example.com
Handling Editor: David Kaplan
Accepted: 26 February 2019
Mantle length (ML) and age data were analyzed to describe the growth patterns of the flying jumbo squid, Dosidicus gigas, in Peruvian waters. Six non-asymptotic growth models and four asymptotic growth models were fitted. Length-at-age data for males and females were analysed separately to assess the growth pattern. Multi-model inference and Akaike's information criterion were used to identify the best fitting model. For females, the best candidate growth model was the Schnute model with L∞ = 106.96 cm ML (CI 101.23–110.27 cm ML, P < 0.05), age at growth inflection 244.71 days (CI 232.82–284.86 days, P < 0.05), and length at growth inflection 57.26 cm ML (CI 55.42–58.51 cm ML, P < 0.05). The growth pattern in males was best described by a Gompertz growth model with L∞ = 127.58 cm ML (CI 115.27–131.80 cm ML, P < 0.05), t0 = 21.8 (CI 20.06–22.41, P < 0.05), and k = 0.007 (CI 0.006–0.007, P < 0.05). These results contrast with the growth model previously reported for D. gigas in the region, where the growth pattern was identified as non-asymptotic.
Key words: Age / Statoliths / Multi-model inference / Peru
© EDP Sciences 2019
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.