Growth and survival model of Pacific bluefin tuna ( Thunnus orientalis ) for capture‐based aquaculture in Mexico

Abstract

Capture‐based aquaculture (CBA) is a strategy to capture wild aquatic organisms for rearing. The most iconic species produced under this scheme are bluefin tunas. In Mexico, CBA of this species is developed with Pacific bluefin tunas (PBFT). The parametrization of a biological production function able to describe biomass dynamics during the production cycle is one of the strategies that can help optimize production. The objective of this study was to explain biomass dynamics in capture‐based Pacific Bluefin tuna aquaculture in Mexican waters through parameterization of a growth and survival model. This study also assessed the impact of uncertain intrinsic CBA variables (i.e. seed weight, number of stocked individuals and sea surface temperature [SST] variability). The model was parameterized with production records of 47 net pens in two production sites (an offshore and an inshore facility) during three cycles. The results suggested that production performance was related to SST given that this factor affected survival, mainly during the first ≈40 days after stocking. The risk analysis showed that stocking during the second half of the fishing season from June to August increased the likelihood of matching or exceeding the Key Performance Indicator (KPI) defined regarding biomass increase per pen.

Sustainable fish production in Egypt: towards strategic management for capture-based aquaculture

“…It can be defined as a practice where wild aquatic organisms are collected for aquaculture. This method allows for bypassing the challenging hatchery stage, distinguishing it from closed aquaculture (Vergara-Solana et al 2019;Pettersen et al 2023). Although CBA has been practiced for many decades, it was only in 2004 that this term was introduced.…”

The First Detection of Kudoa hexapunctata in Farmed Pacific Bluefin Tuna in South Korea, Thunnus orientalis (Temminck and Schlegel, 1844)

“…Because fish and shellfish products have exhibited nutritive benefits and because of the increasing demand for healthy food, the consumption of fish and shellfish products is increasing annually [ 1 , 2 ]. Among fish, tuna has a very high commercial value in many countries [ 3 ]. However, parasitic diseases in fish can cause foodborne diseases in humans, according to the literature, which indicates that Kudoa septempunctata is a potential threat to human health [ 4 , 5 , 6 ].…”