Morphological features of the Black Sea turbot (Scophthalmus maeoticus) during the period of embryonic development
Black Sea turbot (hereinafter BST), Scophthalmus maeoticus (Pallas, 1814), is a valuable fish for commercial fishery and promising object of industrial mariculture. Potential fecundity of BST is very high, 3–13 million eggs; however, survival of its progenies during early development in the sea is u...
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A. O. Kovalevsky Institute of Biology of the Southern Seas of RAS
2019
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ftdoajarticles:oai:doaj.org/article:e6093630c77d401facba11075995abb3 2023-05-15T18:41:09+02:00 Morphological features of the Black Sea turbot (Scophthalmus maeoticus) during the period of embryonic development A. N. Khanaychenko V. E. Giragosov 2019-12-01T00:00:00Z https://doi.org/10.21072/mbj.2019.04.4.06 https://doaj.org/article/e6093630c77d401facba11075995abb3 EN RU eng rus A. O. Kovalevsky Institute of Biology of the Southern Seas of RAS https://marine-biology.ru/mbj/article/view/206 https://doaj.org/toc/2499-9768 https://doaj.org/toc/2499-9776 doi:10.21072/mbj.2019.04.4.06 2499-9768 2499-9776 https://doaj.org/article/e6093630c77d401facba11075995abb3 Морской биологический журнал, Vol 4, Iss 4 (2019) Black Sea turbot embryogenesis morphology Scophthalmus maeoticus Biology (General) QH301-705.5 article 2019 ftdoajarticles https://doi.org/10.21072/mbj.2019.04.4.06 2022-12-31T11:19:17Z Black Sea turbot (hereinafter BST), Scophthalmus maeoticus (Pallas, 1814), is a valuable fish for commercial fishery and promising object of industrial mariculture. Potential fecundity of BST is very high, 3–13 million eggs; however, survival of its progenies during early development in the sea is unpredictable and low (mortality is up to 90 %). In nature fertilized pelagic BST eggs rise to the sea surface in 2–3 hours; BST develop in upper waters being part of neuston till hatching. BST on its early stages of development could be considered the most vulnerable as the embryo is exposed to diverse adverse effects. The survival and physiological state of the larvae at hatching till exogenous feeding depend on the norm of morphological characteristics of the embryos during their development. Our aim was to study the norm of the changes in BST morphological characteristics during embryogenesis. Morphological analysis of the BST embryogenesis stages from fertilization till hatching on the basis of detailed study of intact embryos (> 2000 eggs) sampled from different experimental batches incubated under experimental conditions is presented. Digital photos and videos of alive eggs were taken with Canon PowerShot A720 using binocular microscope MBS-10 at magnification 8×4 and under light inverted microscope Nikon Eclipse TS100, equipped with analog camera, at magnification ×4, ×10, and ×40. The morphological features of embryogenesis in BST before and after fertilization, cleavage, blastulation, gastrulation, epiboly, and neurulation and until hatching are presented by photos with detailed description of transforming embryological structures. Fertilized pelagic BST eggs covered by transparent shell vary from (1.26 ± 0.14) to (1.31 ± 0.15) mm in diameter, have homogenously distributed yolk and a single round transparent oil drop of 0.20–0.21 mm, positioned at the top of the yolk. Scale of timing of morphological changes is presented in relative time units (as a time interval from fertilization until the emergence of ... Article in Journal/Newspaper Turbot Directory of Open Access Journals: DOAJ Articles Marine Biological Journal 4 4 62 81 |
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language |
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topic |
Black Sea turbot embryogenesis morphology Scophthalmus maeoticus Biology (General) QH301-705.5 |
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Black Sea turbot embryogenesis morphology Scophthalmus maeoticus Biology (General) QH301-705.5 A. N. Khanaychenko V. E. Giragosov Morphological features of the Black Sea turbot (Scophthalmus maeoticus) during the period of embryonic development |
topic_facet |
Black Sea turbot embryogenesis morphology Scophthalmus maeoticus Biology (General) QH301-705.5 |
description |
Black Sea turbot (hereinafter BST), Scophthalmus maeoticus (Pallas, 1814), is a valuable fish for commercial fishery and promising object of industrial mariculture. Potential fecundity of BST is very high, 3–13 million eggs; however, survival of its progenies during early development in the sea is unpredictable and low (mortality is up to 90 %). In nature fertilized pelagic BST eggs rise to the sea surface in 2–3 hours; BST develop in upper waters being part of neuston till hatching. BST on its early stages of development could be considered the most vulnerable as the embryo is exposed to diverse adverse effects. The survival and physiological state of the larvae at hatching till exogenous feeding depend on the norm of morphological characteristics of the embryos during their development. Our aim was to study the norm of the changes in BST morphological characteristics during embryogenesis. Morphological analysis of the BST embryogenesis stages from fertilization till hatching on the basis of detailed study of intact embryos (> 2000 eggs) sampled from different experimental batches incubated under experimental conditions is presented. Digital photos and videos of alive eggs were taken with Canon PowerShot A720 using binocular microscope MBS-10 at magnification 8×4 and under light inverted microscope Nikon Eclipse TS100, equipped with analog camera, at magnification ×4, ×10, and ×40. The morphological features of embryogenesis in BST before and after fertilization, cleavage, blastulation, gastrulation, epiboly, and neurulation and until hatching are presented by photos with detailed description of transforming embryological structures. Fertilized pelagic BST eggs covered by transparent shell vary from (1.26 ± 0.14) to (1.31 ± 0.15) mm in diameter, have homogenously distributed yolk and a single round transparent oil drop of 0.20–0.21 mm, positioned at the top of the yolk. Scale of timing of morphological changes is presented in relative time units (as a time interval from fertilization until the emergence of ... |
format |
Article in Journal/Newspaper |
author |
A. N. Khanaychenko V. E. Giragosov |
author_facet |
A. N. Khanaychenko V. E. Giragosov |
author_sort |
A. N. Khanaychenko |
title |
Morphological features of the Black Sea turbot (Scophthalmus maeoticus) during the period of embryonic development |
title_short |
Morphological features of the Black Sea turbot (Scophthalmus maeoticus) during the period of embryonic development |
title_full |
Morphological features of the Black Sea turbot (Scophthalmus maeoticus) during the period of embryonic development |
title_fullStr |
Morphological features of the Black Sea turbot (Scophthalmus maeoticus) during the period of embryonic development |
title_full_unstemmed |
Morphological features of the Black Sea turbot (Scophthalmus maeoticus) during the period of embryonic development |
title_sort |
morphological features of the black sea turbot (scophthalmus maeoticus) during the period of embryonic development |
publisher |
A. O. Kovalevsky Institute of Biology of the Southern Seas of RAS |
publishDate |
2019 |
url |
https://doi.org/10.21072/mbj.2019.04.4.06 https://doaj.org/article/e6093630c77d401facba11075995abb3 |
genre |
Turbot |
genre_facet |
Turbot |
op_source |
Морской биологический журнал, Vol 4, Iss 4 (2019) |
op_relation |
https://marine-biology.ru/mbj/article/view/206 https://doaj.org/toc/2499-9768 https://doaj.org/toc/2499-9776 doi:10.21072/mbj.2019.04.4.06 2499-9768 2499-9776 https://doaj.org/article/e6093630c77d401facba11075995abb3 |
op_doi |
https://doi.org/10.21072/mbj.2019.04.4.06 |
container_title |
Marine Biological Journal |
container_volume |
4 |
container_issue |
4 |
container_start_page |
62 |
op_container_end_page |
81 |
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1766230650512211968 |