Early development of the Peruvian rock seabass Paralabrax humeralis (Teleostei: Serranidae): morphological description of the embryonic and yolk-sac larval stages

ABSTRACT Describe the embryonic development of Paralabrax humeralis (Peruvian rock seabass) and the present morphology of its eggs and yolk-sac larvae using the eggs spawned by P. humeralis broodstock in captivity. The spawning occurred naturally and spontaneously in early November 2018. The egg is...

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Autores principales:	Futagawa,Masatoshi, Pizarro,Jessica, Bueno,German, Díaz,Juan Pablo
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar 2021
Materias:	Peruvian rock seabass Paralabrax humeralis Serranidae early life stages reproduction
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2021000300520
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spelling	oai:scielo:S0718-560X20210003005202021-07-27Early development of the Peruvian rock seabass Paralabrax humeralis (Teleostei: Serranidae): morphological description of the embryonic and yolk-sac larval stagesFutagawa,MasatoshiPizarro,JessicaBueno,GermanDíaz,Juan Pablo Peruvian rock seabass Paralabrax humeralis Serranidae early life stages reproduction ABSTRACT Describe the embryonic development of Paralabrax humeralis (Peruvian rock seabass) and the present morphology of its eggs and yolk-sac larvae using the eggs spawned by P. humeralis broodstock in captivity. The spawning occurred naturally and spontaneously in early November 2018. The egg is pelagic and round, with a diameter of 0.98 ± 0.02 mm, an oil globule, and a diameter of 0.2 ± 0.02 mm. Embryonic development started with meroblastic cleavage, reaching the first cleavage stage at 0.4 h post-fertilization (HPF), and reached 64 cells at 2.2 HPF. Blastula period, 128 cells to 30% epiboly, end at 11.3 HPF. Gastrula period, 50% epiboly to 90% epiboly, end at 19.6 HPF. In the organogenesis period, forming Kupffer's vesicle appeared at 22.5 HPF, the separation of the caudal fin from the yolk at 30.3 HPF, and the hatching of the first larvae at 47.9 HPF. Water temperature was kept at 17.2 ± 0.2°C. The yolk-sac larvae measured 2.22 ± 0.1 mm with a pigmentation pattern of pinpoint melanophores, all along with the embryo and xanthophores in the cephalic region, trunk, and caudal region, as well as in the oil globule. The larva takes feeds from three days post-hatch-out.info:eu-repo/semantics/openAccessPontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del MarLatin american journal of aquatic research v.49 n.3 20212021-07-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2021000300520en10.3856/vol49-issue3-fulltext-2631
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Peruvian rock seabass Paralabrax humeralis Serranidae early life stages reproduction
spellingShingle	Peruvian rock seabass Paralabrax humeralis Serranidae early life stages reproduction Futagawa,Masatoshi Pizarro,Jessica Bueno,German Díaz,Juan Pablo Early development of the Peruvian rock seabass Paralabrax humeralis (Teleostei: Serranidae): morphological description of the embryonic and yolk-sac larval stages
description	ABSTRACT Describe the embryonic development of Paralabrax humeralis (Peruvian rock seabass) and the present morphology of its eggs and yolk-sac larvae using the eggs spawned by P. humeralis broodstock in captivity. The spawning occurred naturally and spontaneously in early November 2018. The egg is pelagic and round, with a diameter of 0.98 ± 0.02 mm, an oil globule, and a diameter of 0.2 ± 0.02 mm. Embryonic development started with meroblastic cleavage, reaching the first cleavage stage at 0.4 h post-fertilization (HPF), and reached 64 cells at 2.2 HPF. Blastula period, 128 cells to 30% epiboly, end at 11.3 HPF. Gastrula period, 50% epiboly to 90% epiboly, end at 19.6 HPF. In the organogenesis period, forming Kupffer's vesicle appeared at 22.5 HPF, the separation of the caudal fin from the yolk at 30.3 HPF, and the hatching of the first larvae at 47.9 HPF. Water temperature was kept at 17.2 ± 0.2°C. The yolk-sac larvae measured 2.22 ± 0.1 mm with a pigmentation pattern of pinpoint melanophores, all along with the embryo and xanthophores in the cephalic region, trunk, and caudal region, as well as in the oil globule. The larva takes feeds from three days post-hatch-out.
author	Futagawa,Masatoshi Pizarro,Jessica Bueno,German Díaz,Juan Pablo
author_facet	Futagawa,Masatoshi Pizarro,Jessica Bueno,German Díaz,Juan Pablo
author_sort	Futagawa,Masatoshi
title	Early development of the Peruvian rock seabass Paralabrax humeralis (Teleostei: Serranidae): morphological description of the embryonic and yolk-sac larval stages
title_short	Early development of the Peruvian rock seabass Paralabrax humeralis (Teleostei: Serranidae): morphological description of the embryonic and yolk-sac larval stages
title_full	Early development of the Peruvian rock seabass Paralabrax humeralis (Teleostei: Serranidae): morphological description of the embryonic and yolk-sac larval stages
title_fullStr	Early development of the Peruvian rock seabass Paralabrax humeralis (Teleostei: Serranidae): morphological description of the embryonic and yolk-sac larval stages
title_full_unstemmed	Early development of the Peruvian rock seabass Paralabrax humeralis (Teleostei: Serranidae): morphological description of the embryonic and yolk-sac larval stages
title_sort	early development of the peruvian rock seabass paralabrax humeralis (teleostei: serranidae): morphological description of the embryonic and yolk-sac larval stages
publisher	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar
publishDate	2021
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2021000300520
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Early development of the Peruvian rock seabass Paralabrax humeralis (Teleostei: Serranidae): morphological description of the embryonic and yolk-sac larval stages

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