Effect of the incubation temperature on the embryonic development and hatching time of eggs of the red porgy Pagrus pagrus (Linne, 1758) (Pisces: Sparidae)

Assessment of egg quality at early embryonic stages may be useful predictive criterion to evaluate the potential mass juvenile production in red porgy Pagrus pagrus. The objective of the present study is to describe in detail the embryonic developmental stages in the red porgy and the time taken by...

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Autores principales:	Radonic,Mariela, López,Andrea V, Oka,Masakazu, Aristizábal,Eddie O
Lenguaje:	English
Publicado:	Universidad de Valparaíso. Facultad de Ciencias del Mar 2005
Materias:	marine fish organogenesis egg quality seed production Argentina
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-19572005000200001
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spelling	oai:scielo:S0718-195720050002000012006-03-06Effect of the incubation temperature on the embryonic development and hatching time of eggs of the red porgy Pagrus pagrus (Linne, 1758) (Pisces: Sparidae)Radonic,MarielaLópez,Andrea VOka,MasakazuAristizábal,Eddie O marine fish organogenesis egg quality seed production Argentina Assessment of egg quality at early embryonic stages may be useful predictive criterion to evaluate the potential mass juvenile production in red porgy Pagrus pagrus. The objective of the present study is to describe in detail the embryonic developmental stages in the red porgy and the time taken by larvae to hatch at three incubation temperatures. Fertilized eggs obtained from natural spawnings were incubated at 15, 20 and 25ºC. Photomicrographs of all the embryonic stages were taken at the three temperatures. Cell divisions after fertilization and organ appearance during the embryonic development were identified. The sequence in cellular divisions and appearance of sensory and motor organs were the same for the three temperatures, although the higher the temperature, the faster the stages of development. Hatching time was also determined by the incubation temperature. At 25ºC the completely-formed embryo hatched at approximately 25 h 26 min after fertilization whereas at 20ºC and 15ºC hatching occurred 37 and 60 h post fertilization. Knowledge of the normal embryonic stages, the sequence of cleavages, the egg diameter, the number of oil drops, the timing of organ formation and the hatching rate is a basic requirement for assessing the eggs batches quality during seed mass productioninfo:eu-repo/semantics/openAccessUniversidad de Valparaíso. Facultad de Ciencias del MarRevista de biología marina y oceanografía v.40 n.2 20052005-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-19572005000200001en10.4067/S0718-19572005000200001
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	marine fish organogenesis egg quality seed production Argentina
spellingShingle	marine fish organogenesis egg quality seed production Argentina Radonic,Mariela López,Andrea V Oka,Masakazu Aristizábal,Eddie O Effect of the incubation temperature on the embryonic development and hatching time of eggs of the red porgy Pagrus pagrus (Linne, 1758) (Pisces: Sparidae)
description	Assessment of egg quality at early embryonic stages may be useful predictive criterion to evaluate the potential mass juvenile production in red porgy Pagrus pagrus. The objective of the present study is to describe in detail the embryonic developmental stages in the red porgy and the time taken by larvae to hatch at three incubation temperatures. Fertilized eggs obtained from natural spawnings were incubated at 15, 20 and 25ºC. Photomicrographs of all the embryonic stages were taken at the three temperatures. Cell divisions after fertilization and organ appearance during the embryonic development were identified. The sequence in cellular divisions and appearance of sensory and motor organs were the same for the three temperatures, although the higher the temperature, the faster the stages of development. Hatching time was also determined by the incubation temperature. At 25ºC the completely-formed embryo hatched at approximately 25 h 26 min after fertilization whereas at 20ºC and 15ºC hatching occurred 37 and 60 h post fertilization. Knowledge of the normal embryonic stages, the sequence of cleavages, the egg diameter, the number of oil drops, the timing of organ formation and the hatching rate is a basic requirement for assessing the eggs batches quality during seed mass production
author	Radonic,Mariela López,Andrea V Oka,Masakazu Aristizábal,Eddie O
author_facet	Radonic,Mariela López,Andrea V Oka,Masakazu Aristizábal,Eddie O
author_sort	Radonic,Mariela
title	Effect of the incubation temperature on the embryonic development and hatching time of eggs of the red porgy Pagrus pagrus (Linne, 1758) (Pisces: Sparidae)
title_short	Effect of the incubation temperature on the embryonic development and hatching time of eggs of the red porgy Pagrus pagrus (Linne, 1758) (Pisces: Sparidae)
title_full	Effect of the incubation temperature on the embryonic development and hatching time of eggs of the red porgy Pagrus pagrus (Linne, 1758) (Pisces: Sparidae)
title_fullStr	Effect of the incubation temperature on the embryonic development and hatching time of eggs of the red porgy Pagrus pagrus (Linne, 1758) (Pisces: Sparidae)
title_full_unstemmed	Effect of the incubation temperature on the embryonic development and hatching time of eggs of the red porgy Pagrus pagrus (Linne, 1758) (Pisces: Sparidae)
title_sort	effect of the incubation temperature on the embryonic development and hatching time of eggs of the red porgy pagrus pagrus (linne, 1758) (pisces: sparidae)
publisher	Universidad de Valparaíso. Facultad de Ciencias del Mar
publishDate	2005
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-19572005000200001
work_keys_str_mv	AT radonicmariela effectoftheincubationtemperatureontheembryonicdevelopmentandhatchingtimeofeggsoftheredporgypagruspagruslinne1758piscessparidae AT lopezandreav effectoftheincubationtemperatureontheembryonicdevelopmentandhatchingtimeofeggsoftheredporgypagruspagruslinne1758piscessparidae AT okamasakazu effectoftheincubationtemperatureontheembryonicdevelopmentandhatchingtimeofeggsoftheredporgypagruspagruslinne1758piscessparidae AT aristizabaleddieo effectoftheincubationtemperatureontheembryonicdevelopmentandhatchingtimeofeggsoftheredporgypagruspagruslinne1758piscessparidae
_version_	1714202254655881216

Effect of the incubation temperature on the embryonic development and hatching time of eggs of the red porgy Pagrus pagrus (Linne, 1758) (Pisces: Sparidae)

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