Modelling Early Growth of Totoaba macdonaldi (Teleostei: Sciaenidae) under Laboratory Conditions

The totoaba (Totoaba macdonaldi) is a sciaenid (croaker) fish endemic to the Gulf of California with high commercial importance. Because it was considered at risk of extinction (since 2021 it was reclassified as vulnerable by the IUCN), and aquaculture procedures were developed for restocking and co...

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Bibliographic Details
Published in:Fishes 2023-03, Vol.8 (3), p.155
Main Authors: Curiel-Bernal, Marcelo V., Cisneros-Mata, Miguel Á., Rodríguez-Domínguez, Guillermo, Sánchez-Velasco, Laura, Jiménez-Rosenberg, S. Patricia A., Parés-Sierra, Alejandro, Aragón-Noriega, E. Alberto
Format: Article
Language:English
Subjects:
Age
Aquaculture
Commercial fishing
depensation growth
Eggs
endangered marine fish
Fish
Fisheries
Fishing
Growth models
Juveniles
Laboratory animals
Modelling
multi-model inference
Polyculture (aquaculture)
Salinity
Schnute model
Software
Species extinction
Swimming
Totoaba macdonaldi
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Summary:The totoaba (Totoaba macdonaldi) is a sciaenid (croaker) fish endemic to the Gulf of California with high commercial importance. Because it was considered at risk of extinction (since 2021 it was reclassified as vulnerable by the IUCN), and aquaculture procedures were developed for restocking and commercial purposes. The present study was conducted with the hypothesis that the early stages of totoaba present depensatory individual growth and an observed variance-at-age modelling approach is the best way to parametrize growth. Ten models were tested including asymptotic, non-asymptotic, exponential-like, and power-like curves including a new one that represents a modification of Schnute’s model. The model that best described the growth trajectory of larval and early juveniles of T. macdonaldi in a controlled environment is a sigmoid curve with two inflexions, related to changes in the feeding regime.
ISSN:2410-3888
2410-3888
DOI:10.3390/fishes8030155