Assessment of the Seasonal Effects of Heavy Metals on Kuruma Prawn (Marsupenaeus japonicus) and its Impacts on the Ovary and biochemical composition at Abu- Qir Bay | ||||
| Journal of Environmental Studies | ||||
| Volume 37, Issue 1, January 2025, Page 8-22 PDF (1.25 MB) | ||||
| Document Type: High quality original papers | ||||
| DOI: 10.21608/jesj.2024.330555.1096 | ||||
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| Authors | ||||
Shahenaz Magdy Abd Ellah  1; Soheir Salem El Sherif2; Hala Mohamed Abd El Latif3; Ola Salah El Din Nour4
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| 1Department of Biology &Geology,Faculty of Education ,Alexandria University, Egypt. | ||||
| 2Department of Zoology,Faculty of Science ,Alexandria University ,Egypt | ||||
| 3Department of Biology &Geology,Faculty of Education ,Alexandria University , Egypt | ||||
| 4Department of Biology &Geology,Faculty of Education , Alexandria University , Egypt | ||||
| Abstract | ||||
| ABSTRACT The kuruma prawn Marsupenaeus japonicus is considered as one of the luxury seafood in Alexandria, Mediterranean Sea, Egypt. The present study is designed to determine the seasonal bioaccumulation of Zn, Cu, Fe, Pd, Cd and Co in the whole soft tissues as well as in the ovary of M. japonicus collected from Abu-Qir bay. The kuruma prawn accumulates metals in soft tissues and gonads at concentrations exceeding that of seawater. The order of metals bioaccumulation levels was Zn >Fe >Cu >Pb> Cd>Co. Metals in the whole soft tissues as well as the ovary showed seasonal variations. For all metals, the highest concentrations were detected in summer, while the lowest were in winter. Results revealed that only the bioaccumulation levels of Zn and Fe in kuruma prawn were found to be higher than the permissible limits for human consumption. Moreover, the level of the caloric contents of the soft tissues of M. japonicus was evaluated and seasonal variations were recorded. The seasonal total protein contents in the soft tissues of M. japonicus were arranged as followed: summer > spring > autumn > winter. In contrast, the highest content of total carbohydrates and total lipids was in winter, while their lowest content was in summer. The present study extended also to histological studies of the ovary of M. japonicus at different stages of maturation. Several stages of ovarian cycle of maturation recorded marked histopathological alterations. | ||||
| Keywords | ||||
| Keywords: prawn; pollution; histopathological damage | ||||
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