Observaciones sobre embriones de larvas y juveniles de la pescadilla (Cynoscion striatus)
Observations on the embrionic and larval development of Cynoscion striatus are presented. The description are made on the basis of material obtained by artificial fertilization. Eggs are pelagic, spherical, 700-840µ in diameter and with single oil globule of 210µ-240µ. The yolk is homogeneous and the chorion has smooth surface. The embryonic development is short and at temperatures of 19°-20°C hatching takes place, 34-36 hours after the fertilization. The larvae at hatching are small, about 2 mm in length and not advanced in their development. The mouth is not functional and the anus is not open. The oil globule is situated in the posterior part of the yolk sac; the position of the anus is close to the posterior end of the yolk sac and the digestice tract forms a straight angle with the anus. The dody and the oil globule are pigmented. The juveniles have a rather deep form of the head and of the body and have their charasteristic pigmentation pattern. The preoperculum is provided with strong spines which disappear entirely in larger specimens.
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Format: | Journal Contribution biblioteca |
Language: | Spanish / Castilian |
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Mar del Plata: Instituto Nacional de Investigación y Desarrollo Pesquero (INIDEP)
1982
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Subjects: | Fish larvae, Embryos, |
Online Access: | http://hdl.handle.net/1834/2045 |
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dig-aquadocs-1834-20452021-05-19T06:23:33Z Observaciones sobre embriones de larvas y juveniles de la pescadilla (Cynoscion striatus) Observations on embryos, larvae and juveniles of (Cynoscion striatus) de Ciechomski, J.D. Cassia, M.C. Fish larvae Embryos Fish larvae Observations on the embrionic and larval development of Cynoscion striatus are presented. The description are made on the basis of material obtained by artificial fertilization. Eggs are pelagic, spherical, 700-840µ in diameter and with single oil globule of 210µ-240µ. The yolk is homogeneous and the chorion has smooth surface. The embryonic development is short and at temperatures of 19°-20°C hatching takes place, 34-36 hours after the fertilization. The larvae at hatching are small, about 2 mm in length and not advanced in their development. The mouth is not functional and the anus is not open. The oil globule is situated in the posterior part of the yolk sac; the position of the anus is close to the posterior end of the yolk sac and the digestice tract forms a straight angle with the anus. The dody and the oil globule are pigmented. The juveniles have a rather deep form of the head and of the body and have their charasteristic pigmentation pattern. The preoperculum is provided with strong spines which disappear entirely in larger specimens. Publisher permission Published Perciformes, Sciaenidae, Cynoscion striatus, pescadilla, larvas de peces, embriones. 2007-11-17T12:58:27Z 2007-11-17T12:58:27Z 1982 Journal Contribution Revista de Investigación y Desarrollo Pesquero, 3. p. 5-15 0325-6375 http://hdl.handle.net/1834/2045 es Mar del Plata: Instituto Nacional de Investigación y Desarrollo Pesquero (INIDEP) |
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Fish larvae Embryos Fish larvae Fish larvae Embryos Fish larvae |
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Fish larvae Embryos Fish larvae Fish larvae Embryos Fish larvae de Ciechomski, J.D. Cassia, M.C. Observaciones sobre embriones de larvas y juveniles de la pescadilla (Cynoscion striatus) |
description |
Observations on the embrionic and larval development of Cynoscion striatus are presented. The description are made on the basis of material obtained by artificial fertilization. Eggs are pelagic, spherical, 700-840µ in diameter and with single oil globule of 210µ-240µ. The yolk is homogeneous and the chorion has smooth surface. The embryonic development is short and at temperatures of 19°-20°C hatching takes place, 34-36 hours after the fertilization. The larvae at hatching are small, about 2 mm in length and not advanced in their development. The mouth is not functional and the anus is not open. The oil globule is situated in the posterior part of the yolk sac; the position of the anus is close to the posterior end of the yolk sac and the digestice tract forms a straight angle with the anus. The dody and the oil globule are pigmented. The juveniles have a rather deep form of the head and of the body and have their charasteristic pigmentation pattern. The preoperculum is provided with strong spines which disappear entirely in larger specimens. |
format |
Journal Contribution |
topic_facet |
Fish larvae Embryos Fish larvae |
author |
de Ciechomski, J.D. Cassia, M.C. |
author_facet |
de Ciechomski, J.D. Cassia, M.C. |
author_sort |
de Ciechomski, J.D. |
title |
Observaciones sobre embriones de larvas y juveniles de la pescadilla (Cynoscion striatus) |
title_short |
Observaciones sobre embriones de larvas y juveniles de la pescadilla (Cynoscion striatus) |
title_full |
Observaciones sobre embriones de larvas y juveniles de la pescadilla (Cynoscion striatus) |
title_fullStr |
Observaciones sobre embriones de larvas y juveniles de la pescadilla (Cynoscion striatus) |
title_full_unstemmed |
Observaciones sobre embriones de larvas y juveniles de la pescadilla (Cynoscion striatus) |
title_sort |
observaciones sobre embriones de larvas y juveniles de la pescadilla (cynoscion striatus) |
publisher |
Mar del Plata: Instituto Nacional de Investigación y Desarrollo Pesquero (INIDEP) |
publishDate |
1982 |
url |
http://hdl.handle.net/1834/2045 |
work_keys_str_mv |
AT deciechomskijd observacionessobreembrionesdelarvasyjuvenilesdelapescadillacynoscionstriatus AT cassiamc observacionessobreembrionesdelarvasyjuvenilesdelapescadillacynoscionstriatus AT deciechomskijd observationsonembryoslarvaeandjuvenilesofcynoscionstriatus AT cassiamc observationsonembryoslarvaeandjuvenilesofcynoscionstriatus |
_version_ |
1756075416563482624 |