Early life history of three Patagonian zoarcids

Zoarcids are well represented in the intertidal zone of the Patagonian coast. They are typically oviparous with parental care, but so far there is little information on their ontogenetic development. The aim of this study was to describe the early developmental stages of 3 zoarcid species: Iluocoete...

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Autores principales:	Marcinkevicius,Mauro S, Gosztonyi,Atila E
Lenguaje:	English
Publicado:	Universidad de Valparaíso. Facultad de Ciencias del Mar 2013
Materias:	Iluocoetes elongatus Phucocoetes latitans Dadyanos insignis pigmentation lateral line
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-19572013000200008
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spelling	oai:scielo:S0718-195720130002000082013-11-12Early life history of three Patagonian zoarcidsMarcinkevicius,Mauro SGosztonyi,Atila E Iluocoetes elongatus Phucocoetes latitans Dadyanos insignis pigmentation lateral line Zoarcids are well represented in the intertidal zone of the Patagonian coast. They are typically oviparous with parental care, but so far there is little information on their ontogenetic development. The aim of this study was to describe the early developmental stages of 3 zoarcid species: Iluocoetes elongatus, Phucocoetes latitans and Dadyanos insignis. Egg masses were sampled from these 3 species in the intertidal zone of the Ría Deseado estuary (Santa Cruz, Argentina), and placed in suitable aquaria to obtain postlarvae and subsequent stages. Results showed that I. elongatus has the largest eggs of the 3 species with 4.94 mm in diameter, 4.93 mm in D. insignis and 4.20 mm in P. latitans. The postlarvae hatch with a high degree of development (with hatching size of 17.5 mm of standard length (SL) of I. elongatus, 18 mm SL of P. latitans and 22 mm SL of D. insignis), differing from juveniles by the presence of a large yolk sac. The pigmentation pattern fully corresponds to that of adults and during development it becomes increasingly intense. The cephalic portion of the lateral line is also totally developed at hatching time.info:eu-repo/semantics/openAccessUniversidad de Valparaíso. Facultad de Ciencias del MarRevista de biología marina y oceanografía v.48 n.2 20132013-08-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-19572013000200008en10.4067/S0718-19572013000200008
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Iluocoetes elongatus Phucocoetes latitans Dadyanos insignis pigmentation lateral line
spellingShingle	Iluocoetes elongatus Phucocoetes latitans Dadyanos insignis pigmentation lateral line Marcinkevicius,Mauro S Gosztonyi,Atila E Early life history of three Patagonian zoarcids
description	Zoarcids are well represented in the intertidal zone of the Patagonian coast. They are typically oviparous with parental care, but so far there is little information on their ontogenetic development. The aim of this study was to describe the early developmental stages of 3 zoarcid species: Iluocoetes elongatus, Phucocoetes latitans and Dadyanos insignis. Egg masses were sampled from these 3 species in the intertidal zone of the Ría Deseado estuary (Santa Cruz, Argentina), and placed in suitable aquaria to obtain postlarvae and subsequent stages. Results showed that I. elongatus has the largest eggs of the 3 species with 4.94 mm in diameter, 4.93 mm in D. insignis and 4.20 mm in P. latitans. The postlarvae hatch with a high degree of development (with hatching size of 17.5 mm of standard length (SL) of I. elongatus, 18 mm SL of P. latitans and 22 mm SL of D. insignis), differing from juveniles by the presence of a large yolk sac. The pigmentation pattern fully corresponds to that of adults and during development it becomes increasingly intense. The cephalic portion of the lateral line is also totally developed at hatching time.
author	Marcinkevicius,Mauro S Gosztonyi,Atila E
author_facet	Marcinkevicius,Mauro S Gosztonyi,Atila E
author_sort	Marcinkevicius,Mauro S
title	Early life history of three Patagonian zoarcids
title_short	Early life history of three Patagonian zoarcids
title_full	Early life history of three Patagonian zoarcids
title_fullStr	Early life history of three Patagonian zoarcids
title_full_unstemmed	Early life history of three Patagonian zoarcids
title_sort	early life history of three patagonian zoarcids
publisher	Universidad de Valparaíso. Facultad de Ciencias del Mar
publishDate	2013
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-19572013000200008
work_keys_str_mv	AT marcinkeviciusmauros earlylifehistoryofthreepatagonianzoarcids AT gosztonyiatilae earlylifehistoryofthreepatagonianzoarcids
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Early life history of three Patagonian zoarcids

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