Singh, Ashneel A. and Sakuramoto, Kazumi and Suzuki, Naoki and Kalla, Alok (2018) Climate - related variability and stock - recruitment relationship of the North Pacific albacore tuna. Polish Journal of Natural Sciences, 33 (1). pp. 131-154. ISSN 1643-9953
Preview |
Text
- Published Version
Download (2MB) | Preview |
Abstract
The stock-recruitment relationship is biological in nature and it is evident that one affects the other. However, fish life cycle, growth, abundance and distribution is dependent on a complex relation with various biotic and abiotic variables inclusive of environmental factors. The stock-recruitment relationship and environmental influences was investigated for the North Pacific albacore tuna (Thunnus alalunga). Statistical investigation revealed the presence of different density-dependent effects in the relationships of recruits per spawning biomass (RPS) and recruitment (R) against the female spawning stock biomass (SSB). Significant relationship of R, RPS and SSB were determined with the sea surface temperature (SST), Pacific Decadal Oscillation (PDO) and multivariate El Niño Southern Oscillation (ENSO), with SST being the principal variable. This makes the stock recruitment behavior multidimensional. The results suggest significant influence of the environmental conditions on the stock recruitment relationship of the North Pacific albacore tuna including a possible regime shift.
| Item Type: | Journal Article |
|---|---|
| Uncontrolled Keywords: | recruitment; spawning stock biomass; sea surface temperature; Pacific decadal oscillation; El Niño southern oscillation |
| Subjects: | Q Science > QH Natural history Q Science > QH Natural history > QH301 Biology S Agriculture > SH Aquaculture. Fisheries. Angling |
| Divisions: | School of Agriculture, Geography, Environment, Ocean and Natural Sciences (SAGEONS) |
| Depositing User: | Ashneel Singh |
| Date Deposited: | 28 Jan 2025 03:49 |
| Last Modified: | 28 Jan 2025 03:49 |
| URI: | https://repository.usp.ac.fj/id/eprint/14563 |
Actions (login required)
 |
View Item |