Annual variation of the biochemical composition, energy reserves and physiological indices in Mactra stultorum tissues from the Tunisian coasts
The present study assessed the consequences of environmental changes on the biochemical quality and the physiological condition of the whole body and others organs Mactra stultorum collected from the north coast of Tunisia. Significant variations in the biochemical components, PE and CI have shown b...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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International Library of Sciences
2020-07-01
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| Series: | Highlights in BioScience |
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| Online Access: | http://highlightsin.org/index.php/bioscience/article/view/25 |
| _version_ | 1811204111933112320 |
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| author | Imene Chetoui Safa Bejaoui Feriel Ghribi M'hamed El Cafsi |
| author_facet | Imene Chetoui Safa Bejaoui Feriel Ghribi M'hamed El Cafsi |
| author_sort | Imene Chetoui |
| collection | DOAJ |
| description | The present study assessed the consequences of environmental changes on the biochemical quality and the physiological condition of the whole body and others organs Mactra stultorum collected from the north coast of Tunisia. Significant variations in the biochemical components, PE and CI have shown between seasons. The depletion of glycogen in all tissues was recorded during spawning periods (late spring and summer). Lipid accumulation in gonad–visceral mass during the early and late gametogenesis stages was associated with the increase in CI and GSI. However, decreases in lipid and protein contents were recorded in all the tested organs during summer when the animals are in the spawning period, suggesting that clams could accumulate proteins and lipids. Regarding the environmental factors, a negative and a significant correlation was recorded between glycogen, lipid contents and water temperature. Based on these results and as M. stultorum is appreciated by the consumers, we suggest that the harvesting of M. stultorum should be concentrated on February to June when the whole body was characterized by an important amount of the biochemical composition when the seafood is at its highest nutritive value as compared to August to January. Because of its high nutritive value especially it’s richness by some important and essentials fatty acids, M. stultorum seems to be considered as an important commercial species in many countries and in Tunisia particularly. We suggest that harvesting of M. stultorum should be concentrated on the period when the seafood is at its highest nutritive value. survivability rates from malignancy. The greatest variations in the mortality ratios existed within the European countries. |
| first_indexed | 2024-04-12T03:05:49Z |
| format | Article |
| id | doaj.art-1b7bb0dc453c4d548e0d077adff0e188 |
| institution | Directory Open Access Journal |
| issn | 2682-4043 |
| language | English |
| last_indexed | 2024-04-12T03:05:49Z |
| publishDate | 2020-07-01 |
| publisher | International Library of Sciences |
| record_format | Article |
| series | Highlights in BioScience |
| spelling | doaj.art-1b7bb0dc453c4d548e0d077adff0e1882022-12-22T03:50:29ZengInternational Library of SciencesHighlights in BioScience2682-40432020-07-013010.36462/H.BioSci.2021023Annual variation of the biochemical composition, energy reserves and physiological indices in Mactra stultorum tissues from the Tunisian coastsImene Chetoui0Safa Bejaoui1Feriel Ghribi2M'hamed El Cafsi3University of Tunis El Manar, Faculty of Sciences of Tunis, Laboratory of Ecology, Biology and Physiology of aquatic organisms, 2092 TunisUniversity of Tunis El Manar, Faculty of Sciences of Tunis, Laboratory of Ecology, Biology and Physiology of aquatic organisms, 2092 TunisUniversity of Tunis El Manar, Faculty of Sciences of Tunis, Laboratory of Ecology, Biology and Physiology of aquatic organisms, 2092 TunisUniversity of Tunis El Manar, Faculty of Sciences of Tunis, Laboratory of Ecology, Biology and Physiology of aquatic organisms, 2092 TunisThe present study assessed the consequences of environmental changes on the biochemical quality and the physiological condition of the whole body and others organs Mactra stultorum collected from the north coast of Tunisia. Significant variations in the biochemical components, PE and CI have shown between seasons. The depletion of glycogen in all tissues was recorded during spawning periods (late spring and summer). Lipid accumulation in gonad–visceral mass during the early and late gametogenesis stages was associated with the increase in CI and GSI. However, decreases in lipid and protein contents were recorded in all the tested organs during summer when the animals are in the spawning period, suggesting that clams could accumulate proteins and lipids. Regarding the environmental factors, a negative and a significant correlation was recorded between glycogen, lipid contents and water temperature. Based on these results and as M. stultorum is appreciated by the consumers, we suggest that the harvesting of M. stultorum should be concentrated on February to June when the whole body was characterized by an important amount of the biochemical composition when the seafood is at its highest nutritive value as compared to August to January. Because of its high nutritive value especially it’s richness by some important and essentials fatty acids, M. stultorum seems to be considered as an important commercial species in many countries and in Tunisia particularly. We suggest that harvesting of M. stultorum should be concentrated on the period when the seafood is at its highest nutritive value. survivability rates from malignancy. The greatest variations in the mortality ratios existed within the European countries.http://highlightsin.org/index.php/bioscience/article/view/25mactra stultorum, seasonal variations, biochemical composition, percentage edibility, condition index and gonado-somatic index |
| spellingShingle | Imene Chetoui Safa Bejaoui Feriel Ghribi M'hamed El Cafsi Annual variation of the biochemical composition, energy reserves and physiological indices in Mactra stultorum tissues from the Tunisian coasts Highlights in BioScience mactra stultorum, seasonal variations, biochemical composition, percentage edibility, condition index and gonado-somatic index |
| title | Annual variation of the biochemical composition, energy reserves and physiological indices in Mactra stultorum tissues from the Tunisian coasts |
| title_full | Annual variation of the biochemical composition, energy reserves and physiological indices in Mactra stultorum tissues from the Tunisian coasts |
| title_fullStr | Annual variation of the biochemical composition, energy reserves and physiological indices in Mactra stultorum tissues from the Tunisian coasts |
| title_full_unstemmed | Annual variation of the biochemical composition, energy reserves and physiological indices in Mactra stultorum tissues from the Tunisian coasts |
| title_short | Annual variation of the biochemical composition, energy reserves and physiological indices in Mactra stultorum tissues from the Tunisian coasts |
| title_sort | annual variation of the biochemical composition energy reserves and physiological indices in mactra stultorum tissues from the tunisian coasts |
| topic | mactra stultorum, seasonal variations, biochemical composition, percentage edibility, condition index and gonado-somatic index |
| url | http://highlightsin.org/index.php/bioscience/article/view/25 |
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