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vol.71 issue1MESOPELAGIC FISH CENTROLOPHUS NIGER (GMELIN, 1789) (PISCES: PERCIFORMES) RECORDED IN CHILEAN CONTINENTAL SLOPE WATERS OF SOUTH AMERICAN PLATEUSE OF THE LARVAL MORPHOLOGY IN THE ELUCIDATION OF THE TAXONOMY OF TETRAPHYLLIDEAN MEROCERCOIDS BELONGING TO THE GENUS RHODOBOTHRIUM PREENT IN MOLLUSKS author indexsubject indexarticles search
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Gayana (Concepción)

Print version ISSN 0717-652XOn-line version ISSN 0717-6538

Abstract

ARANIS R, Antonio; MELENDEZ C, Roberto; PEQUENO R, Germán  and  CERNA T, Francisco. SPRATTUS FUEGENSIS IN THE INLAND WATERS OF CHILOE, CHILE (OSTEICHTHYES: CLUPEIFORMES: CLUPEIDAE). Gayana (Concepc.) [online]. 2007, vol.71, n.1, pp.102-113. ISSN 0717-652X.  http://dx.doi.org/10.4067/S0717-65382007000100011.

A specie of Clupeiform which appears in the catch of the artisanal fishing fleet, operating in the inner sea of the southern fjord area of Chiloé, Chile, has been confused with common sardine (Strangomera bentincki) and spanish sardine (Sardinops sagax music) whose geographical distributions in this area delimited its southernmost limit. A morfometric analysis and count of hard structures of six specimens captured on july 2005, coming from the fishing area of Quicaví, Chiloé (42º17'S - 73º22'W) was determined that as Sprattus fuegensis (Jenyns 1842) (fuegian sprat) and this specie would be the only one present hegemonicaly in the catches of the inland sea of Chiloé, in the X administrative Region of Chile. Based on 33 specimens of S. fuegensis catch near the Isla Guar north of Calbuco in October 2005, a brief description of the otoliths was carried out, also a comparison of the longitudinal diameter of the first hyaline ring, among both sardines using the Mann -Withney non parametric test, in the same way the fish length was compared with the otolith diameter of both sardines, using ANCOVA. The present study confirms the presence of S. fuegensis in southern area of the eastern south Pacific with its northern limit of its distribution in the area of the "Seno de Reloncaví". This rediscovery reveals that during the period from march to december 2005, also S. fuegensis sustained an extractive activity for many years ago to date, and has not been reflected officially on the fishery statistics, with artisanal landings about 18,000 ton/year. The fishery of clupeids in inland waters, it is sustained mainly by S. fuegensis, which turns out in an exhaustive evaluation, of the technical works and summary of information of inland waters of Chiloé.

Keywords : Southern sardine; taxonomy; pelagic fishery.

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