Toshi's work

 M y publication on March 16, 2022. Broodstock Management And The Method To Find The Spawning Temperatures Of Peruvian Rock Seabass Paralabrax Humeralis (Teleostei: Serranidae) Under Captive Condition https://opastonline.com/open-access/broodstock-management-and-the-method-to-find-the-spawning-temperatures-of-peruvian-rock-seabass-paralabrax-humeralis-teleostei-serranidae-under-captive-condition.pdf

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 My publication Early development of the Peruvian rock seabass Paralabrax humeralis (Teleostei: Serranidae): morphological description of the embryonic and yolk-sac larval stages Masatoshi Futagawa, Jessica Pizarro, German Bueno, Juan Pablo Díaz Early development of the Peruvian rock seabass Paralabrax humeralis Submited: 2020-08-18 23:13:12 | Published: 2021-07-04 18:09:44 DOI:

Improvement of seed production by   SISP-B (Semi Intensive Seed Production with Balanidae) Abstract Wild captured cabrilla común ( Paralabrax humeralis ) spawn 19 million eggs and 9 million larvae hatch-out from November 2018 to April 2019. The spawning occurred water temperature 18 to 20 °C mainly. Several SISP （ Semi Intensive Seed Production ） were operated and improved the method. SISP method is different from intensive method as SISP feed natural growing wild copepod instead of rotifer and Artemia that create intensively. Thus SISP not only require several tanks and equipment (pump, filter, UV etc.) but also high level technique and experience. SISP makes anybody produce premium juvenile easily without large investment. Remarkably we found that the larvae eat picoroco nauplius ( Austromegabalanus psittacus ) which nauplius grows bigger and longer than copepod and blue mussel. Also produce picoroco nauplius easier than copepod that collect in coast and just hang in the SISP t

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

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. ·          Anchor / darts tag : The tag has some number and letters, us