- Title
- Comparative study of skipjack tuna Katsuwonus pelamis (Scombridae) fishery stocks from the South Atlantic and western Indian oceans
- Creator
- Dahlet, Lol I
- Creator
- Downey-Breedt, Nicola
- Creator
- Arce, Gabriel
- Creator
- Sauer, Warwick H H
- Creator
- Gasalla, Maria A
- Date Issued
- 2019
- Date
- 2019
- Type
- text
- Type
- article
- Identifier
- http://hdl.handle.net/10962/123988
- Identifier
- vital:35523
- Identifier
- https://doi.org/10.3989/scimar.04804.22C
- Description
- Temporal and spatial fluctuations in the abundance of oceanic pelagic populations spread geographically around the globe are common (Cushing 1975). The causes of these fluctuations may be exogenous (environmental or anthropogenic) or endogenous to the organism (e.g. ontogenetic drivers) (Ricker 1954). This scenario applies to some tuna stocks, including the skipjack tuna, Katsuwonus pelamis (Linnaeus, 1758), known as bonito-listrado in Brazil, katunkel, or ocean bonito in South Africa, and godhaa (bigger) or kadumas (smaller) skipjack in the Maldives. The skipjack belongs to the family Scombridae and inhabits tropical and subtropical areas of the globe. On average, 85% of skipjack catch occurs in waters warmer than 24°C (Fonteneau 2003). This resource is of particular importance, accounting for 57% of the global industrial tuna catch in 2016, and is mainly processed by the canning industry. Skipjack catches totaled 2.79 million t in 2016 (ISSF 2018), and currently 8.5% of worldwide catches are made by the pole-and line fleet. In Brazil and the Maldives, the resource is well-known. Catches in Brazil were seen to increase until 2014, while in the Maldives, 2006 marked the beginning of a strong and unsettling decline that continued until recent years. Off South Africa, skipjack catches are 1000 to 10000 times lower than those from Brazil and the Maldives, and the highest catches were recorded in 2012.
- Format
- 12 pages
- Format
- Language
- English
- Relation
- Scientia Marina
- Relation
- Dahlet, L.I., Downey-Breedt, N., Arce, G., Sauer, W.H. and Gasalla, M.A., 2019. Comparative study of skipjack tuna Katsuwonus pelamis (Scombridae) fishery stocks from the South Atlantic and western Indian oceans. Scientia Marina, 83(1), pp.19-30.
- Relation
- Scientia Marina volume 83 number 1 19 30 2019 0214-8358
- Rights
- Scientia Marina
- Rights
- Use of this resource is governed by the terms and conditions of the Scientia Marina Open Access Policy Statement (http://scientiamarina.revistas.csic.es/index.php/scientiamarina/about/editorialPolicies#openAccessPolicy)
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Sauer, Warwick H H (Prof)
RU Department of Ichthyology and Fisheries Science
SDG 14. Life Below Water
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