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Egyptian Journal of Aquatic Biology and Fisheries
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Rady, A. (2022). First record of morphological malformations in the blue swimming crab, Portunus segnis (Portunidae: Brachyura) from the Timsah Lake, Suez Canal, Egypt. Egyptian Journal of Aquatic Biology and Fisheries, 26(2), 877-888. doi: 10.21608/ejabf.2022.279078
Ahmed Rady. "First record of morphological malformations in the blue swimming crab, Portunus segnis (Portunidae: Brachyura) from the Timsah Lake, Suez Canal, Egypt". Egyptian Journal of Aquatic Biology and Fisheries, 26, 2, 2022, 877-888. doi: 10.21608/ejabf.2022.279078
Rady, A. (2022). 'First record of morphological malformations in the blue swimming crab, Portunus segnis (Portunidae: Brachyura) from the Timsah Lake, Suez Canal, Egypt', Egyptian Journal of Aquatic Biology and Fisheries, 26(2), pp. 877-888. doi: 10.21608/ejabf.2022.279078
Rady, A. First record of morphological malformations in the blue swimming crab, Portunus segnis (Portunidae: Brachyura) from the Timsah Lake, Suez Canal, Egypt. Egyptian Journal of Aquatic Biology and Fisheries, 2022; 26(2): 877-888. doi: 10.21608/ejabf.2022.279078

First record of morphological malformations in the blue swimming crab, Portunus segnis (Portunidae: Brachyura) from the Timsah Lake, Suez Canal, Egypt

Article 54, Volume 26, Issue 2, March and April 2022, Page 877-888  XML PDF (971.59 K)
Document Type: Original Article
DOI: 10.21608/ejabf.2022.279078
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Author
Ahmed Rady
Abstract
The objective of this study is to document the presence of external morphological malformations in the blue swimming crab Portunus segnis (Forskal, 1775) (= Portunus pelagicus), from the Timsah Lake, Suez Canal. A total of 269 specimens were collected, out of which 28 individuals (19 males and 9 females, 7% and 3.4 % respectively) showed malformations with different percentages in chelipeds, swimming legs, carapace and abdomen. The presence of malformations was different between the sexes. In males, the malformations were observed principally in the chelipeds, while in females were in the chelipeds and swimming legs. The cause of the malformation could be related to wound healing processes after an injury or molting artifacts, and perhaps developmental disorders based on toxic substances.
Keywords
Morphological malformations; chelipeds; swimming legs; carapace
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