Biology:Jacquinotia
Jacquinotia is a genus of spider crab that contains one species, Jacquinotia edwardsii.[1] J. edwardsii is the largest crab in New Zealand and is commonly known as the southern spider crab or the giant spider crab.[2][3][4]
Description
Jacquinotia edwardsii has a rough, triangular-knobbed shape carapace, which is dirty white in colour. Males are much larger than females and reach a legspan of up to 100 cm (39 in) and a carapace length up to 20 cm (7.9 in).[4]
Distribution
Jacquinotia edwardsii is found in southern New Zealand, from Mernoo Gap to the Campbell Islands, in the intertidal zone and to a depth of 500 m (1,600 ft).[4] Fossils have been found from the late Pleistocene to the early Pliocene which are referable to J. edwardsii or – for the oldest known specimen – very similar.[5]
Ecology
The maturity size for males is about 110 mm (4.3 in), and 100 mm (3.9 in) for females, but the age for the southern spider crabs are unknown. The larvae start between September and November. Males may consume other shells, while females are detritivores.[4] Jacquinotia edwardsii is commercially fished.[4]
References
- ↑ De Grave, Sammy (22 November 2019). "Jacquinotia Rathbun, 1915". WoRMS. World Register of Marine Species. http://www.marinespecies.org/aphia.php?p=taxdetails&id=439463.
- ↑ Soboil, M.L.; Craig, A. (2008). "Self governance in New Zealand's developmental fisheries: deep-sea crabs". in Townsend, Ralph Edwin. Case Studies in Fisheries Self-governance. FAO Fisheries Technical Paper. Rome: Food and Agriculture Organization of the United Nations.
- ↑ Webber, W. Richard; Wear, Robert G. (1981). "Life history studies on New Zealand Brachyura *5. Larvae of the family Majidae". New Zealand Journal of Marine and Freshwater Research 15 (4): 331–383. doi:10.1080/00288330.1981.9515929.
- ↑ 4.0 4.1 4.2 4.3 4.4 "Crab, Giant Spider". http://www.marinelife.ac.nz/species/874.
- ↑ Yaldwyni, John Cameron; Beu, Alan Glenn (1977). "Appendix 1: The fossil occurrence of Jacquinotia edwardsii". New Zealand Journal of Geology and Geophysics 20 (2): 237–243. doi:10.1080/00288306.1977.10420702. Bibcode: 1977NZJGG..20..237Y.
Wikidata ☰ Q18092479 entry
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