|Scientific Name:||Scomberomorus plurilineatus|
|Species Authority:||Fourmanoir, 1966|
|Taxonomic Notes:||This species has been confused with Scomberomorus lineolatus and with Scomberomorus guttatus (and also one of its junior synonyms Scomberomorus leopardus). The primary source of published biological information is based on observations in Zanzibar as S. lineolatus (Williams 1960).
|Red List Category & Criteria:||Data Deficient ver 3.1|
|Assessor(s):||Collette, B., Di Natale, A., Fox, W., Juan Jorda, M. & Nelson, R.|
|Reviewer(s):||Russell, B. & Polidoro, B.|
This species is found along East Africa, where there has been a suggested 50% decline of unfished biomass in the South Africa portion of its range. However, there is no data from other regions within its range, where fishing pressure is likely to be at least as high as in South Africa. It is listed as Data Deficient. More information on species specific landings and effort is need for this region.
|Range Description:||This species is found in the western Indian Ocean from Seychelles, Kenya and Zanzibar to South Africa and along the west coast of Madagascar.|
Native:Comoros; Kenya; Madagascar; Mozambique; Réunion; Seychelles; South Africa; Tanzania, United Republic of
|FAO Marine Fishing Areas:||
Atlantic – southeast; Indian Ocean – western
|Lower depth limit (metres):||200|
|Range Map:||Click here to open the map viewer and explore range.|
|Population:||This species is seasonally important in Tanzania and Kenya (Collette and Nauen 1983). There is a big sport fishery in South Africa for this species. However, there are no reported landings of this species, as they may be mixed with other Scomberomorus species in some parts of its range.
In South Africa, this species has been reduced by 50% of its unfished biomass and is considered optimally exploited (Chale-Matsau et al. 1999).
|Current Population Trend:||Unknown|
|Habitat and Ecology:||This is a pelagic, oceanodromous, and neritic species. It forms large schools in the Zanzibar Channel from March to September. It feeds mainly on anchovies (Anchoviella sp.), clupeids (Amblygaster sp., Sardinella fimbriata, Sardinella perforata), other small fishes, squids, and mantis shrimps (Williams 1964, Van der Elst and Collette 1984).
In South Africa, 50% maturity for this species is attained at age of two years and a length of 72–74 cm fork length (FL) for males, 76–78 cm for females (Van der Elst and Collette 1984). Longevity is estimated to be six years (Chale-Matsau et al. 1999).
Maximum size is 120 cm FL, 12.5 kg. The all-tackle game fish record is of a 12.5 kg fish caught off Mapelane, Zululand, Natal, South Africa in 1997 (IGFA 2011).
|Movement patterns:||Full Migrant|
|Use and Trade:||This species is fished throughout its range.|
|Major Threat(s):||This is a commercial species which is taken with gillnets. In commercial fisheries in South Africa it is typically an incidental catch. It is very important in the recreational line fishery in South Africa (Van der Elst and Collette 1984, Chale-Matsau et al. 1999). Spearfishermen also take Queen Mackerel in Natal. There are clashing interests between recreational and commercial fishermen over the right to exploit the species in Natal (Van der Elst and Collette 1984). Fishing Fishing effort in Madagascar has more than doubled since 1980 (Laroche and Ramananarivo 1995).|
|Conservation Actions:||Beach-seine netting of this species is prohibited in South Africa because netted shoals comprised only immature fish (Van der Elst and Collette 1984). There is a bag limit of 10 fish per fisher per day in South Africa. The European Union has requested countries to report the catches of this species yearly (PE Const 3620/2/08 11 March 2009) as more information is needed on species specific landings and effort.|
|Citation:||Collette, B., Di Natale, A., Fox, W., Juan Jorda, M. & Nelson, R. 2011. Scomberomorus plurilineatus. The IUCN Red List of Threatened Species 2011: e.T170348A6760962. http://dx.doi.org/10.2305/IUCN.UK.2011-2.RLTS.T170348A6760962.en . Downloaded on 09 October 2015.|
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