Portunus segnis

Portunus segnis
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Subphylum:	Crustacea
Class:	Malacostraca
Order:	Decapoda
Infraorder:	Brachyura
Family:	Portunidae
Genus:	Portunus
Species:	P. segnis
Binomial name
	Portunus segnis; (Forskål, 1775)

Portunus segnis is a species of swimming blue crab which has become invasive in the Mediterranean. It came through the Suez Canal from the Indian Ocean. It reached Tunisian waters in 2014. It has proved very destructive to fish stocks. It is now itself a species profitably fished for.

Tunisian fishermen nickname it "Daesh" after the Islamic State of Iraq and the Levant because of its invasiveness and destructiveness.^[1]

A new fishery to catch them has started.^[2]^[3]

The Portunus segnis diet is seasonally dependent, with crustaceans such as other crabs and shrimps being more prominent in the summer while fishes and mollusks were more common for the fall and winter.^[4] Although the aforementioned animals are the major parts of this species’s diet, studies have identified annelids, cnidarians, plants, and even debris in the stomach of Portunus segnis subjects.^[5]

References[]

^ https://www.google.com/search?client=firefox-b-d&q=portunus+invasive+tunisia Google search
^ https://www.seafoodsource.com/news/supply-trade/tunisia-carthage-crabs-emerging-as-new-source-of-blue-swimming-crab
^ "Tunisia fishermen turn tide to cash in on blue crab menace". phys.org. Retrieved 25 December 2020.
^ Safaie, Mohsen (2016-08-01). "Feeding habits of blue swimming crab Portunus segnis (Forskal, 1775) in the northern coastal waters of Iran". Marine Biodiversity Records. 9 (1): 68. doi:10.1186/s41200-016-0073-y. ISSN 1755-2672. S2CID 5025612.
^ Hamida, Olfa Ben Abdallah-Ben Hadj; Hamida, Nader Ben Hadj; Ammar, Rihab; Chaouch, Houda; Missaoui, Hechmi (September 2019). "Feeding habits of the swimming blue crab Portunus segnis (Forskål, 1775) (Brachyura: Portunidae) in the Mediterranean". Journal of the Marine Biological Association of the United Kingdom. 99 (6): 1343–1351. doi:10.1017/S0025315419000250. ISSN 0025-3154. S2CID 182630761.

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[1] ttps://www.google.com/search?client=firefox-b-d&q=portunus+invasive+tunisia Google search

[2] ttps://www.seafoodsource.com/news/supply-trade/tunisia-carthage-crabs-emerging-as-new-source-of-blue-swimming-crab

[3] "Tunisia fishermen turn tide to cash in on blue crab menace". phys.org. Retrieved 25 December 2020.

[4] Safaie, Mohsen (2016-08-01). "Feeding habits of blue swimming crab Portunus segnis (Forskal, 1775) in the northern coastal waters of Iran". Marine Biodiversity Records. 9 (1): 68. doi:10.1186/s41200-016-0073-y. ISSN 1755-2672. S2CID 5025612.

[5] Hamida, Olfa Ben Abdallah-Ben Hadj; Hamida, Nader Ben Hadj; Ammar, Rihab; Chaouch, Houda; Missaoui, Hechmi (September 2019). "Feeding habits of the swimming blue crab Portunus segnis (Forskål, 1775) (Brachyura: Portunidae) in the Mediterranean". Journal of the Marine Biological Association of the United Kingdom. 99 (6): 1343–1351. doi:10.1017/S0025315419000250. ISSN 0025-3154. S2CID 182630761.

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