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Development of loco seed production at North of Chile

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Development of loco seed production at North of Chile Masatoshi FUTAGAWA September 19, 2016 Our project, between UNAP and regional government of Tarapaca chile, develop mas seed production method of loco ( Concholepas concholepas ) in order to recover loco natural resources from 2013 to 2015. We completed the method that broodstock rearing, maturation and capsule incubation. Hatch-out larvae are produced all year round constantly and over 200 million of hatch-out larvae are released to our coast. Also we produced some larvae which grew more than 130 days after hatch-out with clear water which filtered, disinfect ed by UV and sterilized with autoclave . However, we couldn’t develop mass seed production method.   The mass seed production technology is under studying by decades and aim is not accomplish yet in Chile . Because of the following reasons make hard to achieve. Loco larvae has four month planktonic period (veliger stage) that very long period c...
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DESCRIPCIÓN DE LOS ESTADIOS DE DESARROLLO DE HUEVOS Y LARVAS EN SACO VITELINO DE LA CABRILLA COMÚN (Paralabrax humeralis)

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DESCRIPCIÓN DE LOS ESTADIOS DE DESARROLLO DE HUEVOS Y LARVAS EN SACO VITELINO DE LA CABRILLA COMÚN ( Paralabrax humeralis ) Jessica Pizarro1, Masatoshi Futagawa, German Bueno, Juan Pablo Díaz 1 Facultad Recursos Naturales Renovables. Universidad Arturo Prat. Iquique - Chile. jpizarro@unap.cl INTRODUCCIÓN La cabrilla común Paralabrax humeralis (Valenciennes, 1828) es un serránido que habita en áreas costeras rocoso-arenosas desde Ecuador (3° S) hasta la región austral de Chile (33°10' S). Es una especie valorada para el consumo humano en el mercado nacional   chileno, con tendencias decrecientes de su abundancia desde los 80’ de acuerdo a las estadísticas pesqueras. El conocimiento de los estados tempranos de vida de esta especie (e.g. características morfológicas, desarrollo embrionario, período de incubación) son desconocidos, constituyendo antecedentes importantes para el desarrollo de un proceso de repoblamiento. El objetivo de este estudio fue conocer y descr...
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Marking and tagging for releasing activity Masatoshi FUTAGAWA August 27, 2017 Markers and tags The marking or tagging is essential activity in order to identify the released fish in the field. According to identification, we evaluate the activity such as growth, survival, migration of the fish at field and evaluate economic effect. Thus, it is necessary to announce to public that request to inform catch data about tag code, location and size of fish. ·          Nasal septum defect : Some hatchery made fish shows nasal septum defect, nose holes are connected. The data have to revising by the defect rate of the released fish batch. ·          Plucking fins / spines : Pluck ventral, pectoral fin or spine at dorsal fin. The method does not harm any survival and growth according to the paper . Even so, the mark recover within few years. ...
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