Morphological and histological studies on the embryonic development of the freshwater prawn, Macrobrachium rosenbergii (Crustacea, Decapoda)
The present work was carried out to describe the embryonic changes during development of the freshwater prawn Macrobrachium rosenbergii based on some morphological and histological features. In addition the biochemical composition of eggs was investigated during the embryonic development of the stud...
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doaj-bc7f6dc2473a4c7984bc04df462511272020-11-24T22:00:04ZengSpringerOpenJournal of Basic and Applied Zoology2090-98962012-05-0165315716510.1016/j.jobaz.2012.01.002Morphological and histological studies on the embryonic development of the freshwater prawn, Macrobrachium rosenbergii (Crustacea, Decapoda)Madlen M. Habashy0Khadiga M. Sharshar1Montaser M.S. Hassan2National Institute of Oceanography and Fisheries, El-Qanater El-Khayria, EgyptZoology Department, Faculty of Science, Tanta University, Tanta, EgyptZoology Department, Faculty of Science, Ain Shams University, Cairo, EgyptThe present work was carried out to describe the embryonic changes during development of the freshwater prawn Macrobrachium rosenbergii based on some morphological and histological features. In addition the biochemical composition of eggs was investigated during the embryonic development of the studied species. Results revealed that eggs of M. rosenbergii completed their development in 20 days at 28.5 ± 0.45 °C. The present investigation showed that primordial germ cells (PGCs) were detected early in the examined embryos. In 6.5 days old embryo, a cluster of PGCs occupied the dorso-medial region behind the yolky portion. In addition, the biochemical data indicated that the protein content was significantly increased, while lipid and carbohydrate contents decreased during the embryonic development. The lowest water content was found in the bright orange eggs and reached its highest level in the deep brown eggs. It was noted that the increase in the water content was correlated with the increase in the egg diameters. It was also concluded that, variations in the biochemical compositions of eggs reflected changes in their morphogenesis during the embryonic development.http://www.sciencedirect.com/science/article/pii/S2090989612000069Freshwater prawn Macrobrachium rosenbergiiEmbryonic developmentBiochemical compositionProteinsLipidsCarbohydrates |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Madlen M. Habashy Khadiga M. Sharshar Montaser M.S. Hassan |
spellingShingle |
Madlen M. Habashy Khadiga M. Sharshar Montaser M.S. Hassan Morphological and histological studies on the embryonic development of the freshwater prawn, Macrobrachium rosenbergii (Crustacea, Decapoda) Journal of Basic and Applied Zoology Freshwater prawn Macrobrachium rosenbergii Embryonic development Biochemical composition Proteins Lipids Carbohydrates |
author_facet |
Madlen M. Habashy Khadiga M. Sharshar Montaser M.S. Hassan |
author_sort |
Madlen M. Habashy |
title |
Morphological and histological studies on the embryonic development of the freshwater prawn, Macrobrachium rosenbergii (Crustacea, Decapoda) |
title_short |
Morphological and histological studies on the embryonic development of the freshwater prawn, Macrobrachium rosenbergii (Crustacea, Decapoda) |
title_full |
Morphological and histological studies on the embryonic development of the freshwater prawn, Macrobrachium rosenbergii (Crustacea, Decapoda) |
title_fullStr |
Morphological and histological studies on the embryonic development of the freshwater prawn, Macrobrachium rosenbergii (Crustacea, Decapoda) |
title_full_unstemmed |
Morphological and histological studies on the embryonic development of the freshwater prawn, Macrobrachium rosenbergii (Crustacea, Decapoda) |
title_sort |
morphological and histological studies on the embryonic development of the freshwater prawn, macrobrachium rosenbergii (crustacea, decapoda) |
publisher |
SpringerOpen |
series |
Journal of Basic and Applied Zoology |
issn |
2090-9896 |
publishDate |
2012-05-01 |
description |
The present work was carried out to describe the embryonic changes during development of the freshwater prawn Macrobrachium rosenbergii based on some morphological and histological features. In addition the biochemical composition of eggs was investigated during the embryonic development of the studied species. Results revealed that eggs of M. rosenbergii completed their development in 20 days at 28.5 ± 0.45 °C. The present investigation showed that primordial germ cells (PGCs) were detected early in the examined embryos. In 6.5 days old embryo, a cluster of PGCs occupied the dorso-medial region behind the yolky portion. In addition, the biochemical data indicated that the protein content was significantly increased, while lipid and carbohydrate contents decreased during the embryonic development. The lowest water content was found in the bright orange eggs and reached its highest level in the deep brown eggs. It was noted that the increase in the water content was correlated with the increase in the egg diameters. It was also concluded that, variations in the biochemical compositions of eggs reflected changes in their morphogenesis during the embryonic development. |
topic |
Freshwater prawn Macrobrachium rosenbergii Embryonic development Biochemical composition Proteins Lipids Carbohydrates |
url |
http://www.sciencedirect.com/science/article/pii/S2090989612000069 |
work_keys_str_mv |
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