ATERGATIS FLORIDUS - (LINNAEUS, 1767)
Arthropoda (Phylum) > Crustacea (Subphylum) > Malacostraca (Class) > Eumalacostraca (Subclass) > Eucarida (Superorder) > Decapoda (Order) > Pleocyemata (Suborder) > Brachyura (Infraorder) > Eubrachyura (Section) > Heterotremata (Subsection) > Xanthoidea (Superfamily) > Xanthidae (Family) > Zosiminae (Subfamily) > Atergatis (Genus)
Floral egg crab, Green egg crab, Shawl crab, Subesubemanjūgani, スベスベマンジュウガニ, 花纹爱洁蟹,
Description
Carapace ovale longitudinalement, convexe, lisse ; bords antéro-latéraux formant une crête, séparés des bords postéro-latéraux par une dent émoussée. Bord supérieur de la pince avec une carène marquée. Bord dorsal des pattescarénées. Couleur vert olive avec de grandes taches irrégulières et symétriques. Carapace : 26x38 – 45x61 mm.
Biologie
Si la plupart des espèces peuvent être consommées sans problème, quelques crustacés toxiques sont à l’origine d’intoxications, parfois mortelles. Atergatis floridus seraient toxiques bien qu’aucun cas d'intoxication ne leur ait encore été attribué. Espèce principalement nocturne.
Espèce ressemblante
Atergatis ocyroe (Herbst, 1801) - Présent dans l'Ouest de l'océan Indien.
Synonyme
Cancer floridus (Linnaeus, 1767)
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Identification
Lateral epibranchial angle of carapace forming an obtuse tooth. Carapace narrow, being 1.4 times as broad as long, its dorsal surface convex and regions fairly well defined; upper inner border of palm sharply crested. Shell size: 26x38 – 45x61 mm.
Description
Carapace length about seven-tenth breadth; its surface of perfectly smooth texture. The crest of the antero-lateral border is sharp and ends at a very distinct tubercle at the lateral epibranchial angle. The front forms with the antero-lateral borders a semicircle. The orbits are rather large, their width being more than one-third that of the front. External maxillipeds free from hair on the surface; the sternum and the surface of all parts of the appendages except the hands are smooth. Chelipeds equal, the upper edge of the merus and hand strongly and sharply carinate; the fingers fluted as usual. Legs with crested edges to the long joints.
Distribution
South east Asia, south to Australia, New Caledonia, east to Hawaii.
Biology
Coral reefs, Hard beaches below low tide mark. It is largely nocturnal. The meat of Atergatis floridus, like that of many related crab species from the family Xanthidae is toxic. The toxins are synthesised by bacteria of the genus Vibrio which live in symbiosis with the crab and the poisons are one similar to those found in puffer fish, i.e. tetrodotoxin, and also saxitoxin which is the primary toxin involved in paralytic shellfish poisoning.
Floral egg crab, Green egg crab, Shawl crab, Subesubemanjūgani, スベスベマンジュウガニ, 花纹爱洁蟹,
Description
Carapace ovale longitudinalement, convexe, lisse ; bords antéro-latéraux formant une crête, séparés des bords postéro-latéraux par une dent émoussée. Bord supérieur de la pince avec une carène marquée. Bord dorsal des pattescarénées. Couleur vert olive avec de grandes taches irrégulières et symétriques. Carapace : 26x38 – 45x61 mm.
Distribution
Sud-Est Asiatique, au Sud, Australie et Nouvelle-Calédonie jusqu'à l'Est vers Hawaï.
Sud-Est Asiatique, au Sud, Australie et Nouvelle-Calédonie jusqu'à l'Est vers Hawaï.
Biologie
Si la plupart des espèces peuvent être consommées sans problème, quelques crustacés toxiques sont à l’origine d’intoxications, parfois mortelles. Atergatis floridus seraient toxiques bien qu’aucun cas d'intoxication ne leur ait encore été attribué. Espèce principalement nocturne.
Espèce ressemblante
Atergatis ocyroe (Herbst, 1801) - Présent dans l'Ouest de l'océan Indien.
Synonyme
Cancer floridus (Linnaeus, 1767)
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Identification
Lateral epibranchial angle of carapace forming an obtuse tooth. Carapace narrow, being 1.4 times as broad as long, its dorsal surface convex and regions fairly well defined; upper inner border of palm sharply crested. Shell size: 26x38 – 45x61 mm.
Description
Carapace length about seven-tenth breadth; its surface of perfectly smooth texture. The crest of the antero-lateral border is sharp and ends at a very distinct tubercle at the lateral epibranchial angle. The front forms with the antero-lateral borders a semicircle. The orbits are rather large, their width being more than one-third that of the front. External maxillipeds free from hair on the surface; the sternum and the surface of all parts of the appendages except the hands are smooth. Chelipeds equal, the upper edge of the merus and hand strongly and sharply carinate; the fingers fluted as usual. Legs with crested edges to the long joints.
Distribution
South east Asia, south to Australia, New Caledonia, east to Hawaii.
Biology
Coral reefs, Hard beaches below low tide mark. It is largely nocturnal. The meat of Atergatis floridus, like that of many related crab species from the family Xanthidae is toxic. The toxins are synthesised by bacteria of the genus Vibrio which live in symbiosis with the crab and the poisons are one similar to those found in puffer fish, i.e. tetrodotoxin, and also saxitoxin which is the primary toxin involved in paralytic shellfish poisoning.
Similar species
Atergatis ocyroe (Herbst, 1801) - Reported from western Indian Ocean.