Capturing, induced spawning, and first feeding of wild-caught Pseudopimelodus mangurus, an endangered catfish species

ABSTRACT This study aimed to describe a procedure for sampling, reproduction, and first feeding of the Neotropical catfish Pseudopimelodus mangurus, an endangered fish species. Wild adult P. mangurus specimens were collected in the Mogi Guassu River and subsequently induced to spawn in laboratory co...

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Autores principales:	Arashiro,Dilberto Ribeiro, Shigueki Yasui,George, Calado,Leonardo Luiz, Nascimento,Nivaldo Ferreira do, Santos,Silvio Carlos Alves do, Shiguemoto,Gustavo Fonseca, Monzani,Paulo Sérgio, Senhorini,José Augusto
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar 2020
Materias:	Pseudopimelodus mangurus catfish conservation GenBank larvae reproduction
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2020000300440
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spelling	oai:scielo:S0718-560X20200003004402020-07-23Capturing, induced spawning, and first feeding of wild-caught Pseudopimelodus mangurus, an endangered catfish speciesArashiro,Dilberto RibeiroShigueki Yasui,GeorgeCalado,Leonardo LuizNascimento,Nivaldo Ferreira doSantos,Silvio Carlos Alves doShiguemoto,Gustavo FonsecaMonzani,Paulo SérgioSenhorini,José Augusto Pseudopimelodus mangurus catfish conservation GenBank larvae reproduction ABSTRACT This study aimed to describe a procedure for sampling, reproduction, and first feeding of the Neotropical catfish Pseudopimelodus mangurus, an endangered fish species. Wild adult P. mangurus specimens were collected in the Mogi Guassu River and subsequently induced to spawn in laboratory conditions. After hand-stripping, the females, the average weight of the oocytes was 143 ± 1.6 g, with a fecundity of 718 ± 49.8 oocytes g-1. The diameter of the oocytes non-hydrated was 1226.3 ± 47.7 μm to 1761.2 ± 26.4 μm after hydration. The fertilization rates were 98.00 ± 0.63%, and the hatching rate was 68.94 ± 11.83%. The first feeding was made three days post-hatching with six different treatments, in which the best results arose with sequential feeding with Artemia nauplii, Astyanax altiparanae and Prochilodus lineatus larvae. This condition resulted in a final length of 2,012.7 ± 44.8 μm by the 10th day of the experiment, higher survival (65 ± 0.9%) and lower cannibalism rate (14 ± 0.3%). The data obtained in this study is important for the establishment of reproductive biotechniques, mass production of P. mangurus, and future establishment of ex-situ GenBank.info:eu-repo/semantics/openAccessPontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del MarLatin american journal of aquatic research v.48 n.3 20202020-07-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2020000300440en10.3856/vol48-issue3-fulltext-2357
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Pseudopimelodus mangurus catfish conservation GenBank larvae reproduction
spellingShingle	Pseudopimelodus mangurus catfish conservation GenBank larvae reproduction Arashiro,Dilberto Ribeiro Shigueki Yasui,George Calado,Leonardo Luiz Nascimento,Nivaldo Ferreira do Santos,Silvio Carlos Alves do Shiguemoto,Gustavo Fonseca Monzani,Paulo Sérgio Senhorini,José Augusto Capturing, induced spawning, and first feeding of wild-caught Pseudopimelodus mangurus, an endangered catfish species
description	ABSTRACT This study aimed to describe a procedure for sampling, reproduction, and first feeding of the Neotropical catfish Pseudopimelodus mangurus, an endangered fish species. Wild adult P. mangurus specimens were collected in the Mogi Guassu River and subsequently induced to spawn in laboratory conditions. After hand-stripping, the females, the average weight of the oocytes was 143 ± 1.6 g, with a fecundity of 718 ± 49.8 oocytes g-1. The diameter of the oocytes non-hydrated was 1226.3 ± 47.7 μm to 1761.2 ± 26.4 μm after hydration. The fertilization rates were 98.00 ± 0.63%, and the hatching rate was 68.94 ± 11.83%. The first feeding was made three days post-hatching with six different treatments, in which the best results arose with sequential feeding with Artemia nauplii, Astyanax altiparanae and Prochilodus lineatus larvae. This condition resulted in a final length of 2,012.7 ± 44.8 μm by the 10th day of the experiment, higher survival (65 ± 0.9%) and lower cannibalism rate (14 ± 0.3%). The data obtained in this study is important for the establishment of reproductive biotechniques, mass production of P. mangurus, and future establishment of ex-situ GenBank.
author	Arashiro,Dilberto Ribeiro Shigueki Yasui,George Calado,Leonardo Luiz Nascimento,Nivaldo Ferreira do Santos,Silvio Carlos Alves do Shiguemoto,Gustavo Fonseca Monzani,Paulo Sérgio Senhorini,José Augusto
author_facet	Arashiro,Dilberto Ribeiro Shigueki Yasui,George Calado,Leonardo Luiz Nascimento,Nivaldo Ferreira do Santos,Silvio Carlos Alves do Shiguemoto,Gustavo Fonseca Monzani,Paulo Sérgio Senhorini,José Augusto
author_sort	Arashiro,Dilberto Ribeiro
title	Capturing, induced spawning, and first feeding of wild-caught Pseudopimelodus mangurus, an endangered catfish species
title_short	Capturing, induced spawning, and first feeding of wild-caught Pseudopimelodus mangurus, an endangered catfish species
title_full	Capturing, induced spawning, and first feeding of wild-caught Pseudopimelodus mangurus, an endangered catfish species
title_fullStr	Capturing, induced spawning, and first feeding of wild-caught Pseudopimelodus mangurus, an endangered catfish species
title_full_unstemmed	Capturing, induced spawning, and first feeding of wild-caught Pseudopimelodus mangurus, an endangered catfish species
title_sort	capturing, induced spawning, and first feeding of wild-caught pseudopimelodus mangurus, an endangered catfish species
publisher	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar
publishDate	2020
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2020000300440
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Capturing, induced spawning, and first feeding of wild-caught Pseudopimelodus mangurus, an endangered catfish species

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