Guinotia dentata

Guinotia dentata, commonly known as cyrique,[2] is a West Indian species of freshwater crab in the family Pseudothelphusidae.[3] They have few predators.[4] They are easily caught[2] and thus are used locally as a food source.[5]

Guinotia dentata
Scientific classification
Kingdom:
Animalia
Phylum:
Arthropoda
Subphylum:
Crustacea
Class:
Malacostraca
Order:
Decapoda
Infraorder:
Brachyura
Family:
Pseudothelphusidae
Genus:
Guinotia
Species:
G. dentata
Binomial name
Guinotia dentata
(Latreille, 1825)
Synonyms[1]
  • Pseudothelphusa tenuipes Pocock, 1889
  • Thelphusa dentata Latreille, 1825

Description

Guinotia dentata is almost oval in shape and the teeth on its carapace are very small. It is a yellow-brown colour and its shell can grow to 65 millimetres (2.6 in) long; it is about 3/5 long as wide.[2][5] The eyestalks are yellow whilst the corneas are black,[2] but they are probably best identifiable by their large yellow claws with straight sharply pointed fingers.[6]

The species sometimes has almost an entire dorsal surface of carapace yellow with submarginal brown.[7]

Its shell has a cervical meandering curve which does not quite touch the edge of the shell. About 24 cubicles are well defined. The forehead is low, excavated and depressed and of uniform height.[8] Its pereiopods are fairly average and its chelae are without prominent, swollen protuberance on outer surface near the base of the fingers.[7]

Distribution and habitat
Guinotia dentata in Dominica

The species is native mostly to Dominica, Guadeloupe, Martinique and Saint Lucia.[9] Its distribution is fragmented because of its presence on multiple islands, but it is plentiful in the regions it inhabits.[9]

Guinotia dentata lives mostly in streams (particularly shady ones)[4] and ponds and may sometimes be seen on land, though it avoids areas that are excessively dry.[3] It has not yet been observed in estuaries.[4] It lives in streams and rives in the highlands of the Lesser Antilles, not including the Virgin Islands.[9][10] They are known to hide under roots of trees, rocks and rotten wood where they dig shallow burrows which are oval in shape.[5][11] They have been spotted at altitudes of 2,850 ft (870 m).[2] They certainly inhabit the Boeri Lake and may inhabit Freshwater Lake.[12]

The largest threat to the species is habitat destruction, and a protected area has been established on Dominica to conserve them.[9]

Reproduction

Reproduction takes place entirely in fresh water, and breeding takes place all year round; there does not seem to be a breeding season.[4] The young undergo direct development, hatching as juveniles, without passing through any larval stages. The females carry the eggs and protect the young[5] who stay with their mother for a period after hatching.[4]

Diet

Guinotia dentata is a mainly carnivorous (though partially herbivorous)[5] animal which sometimes also acts as a scavenger or detritivore.[4] It has been observed to eat minnows, prawns, and aquatic algae-like vegetation.[13]

Taxonomic history

Guinotia dentata was first described in 1825 by Pierre André Latreille.[1] The specific epithet dentata means "toothed" in Latin.[4] In 1965, Gerhard Pretzmann erected the genus Guinotia (a tribute to Danièle Guinot) and made Latreille's species the type species.[14]

References
  1. Peter Davie (2009). "Guinotia dentata (Latreille, 1825)". WoRMS. World Register of Marine Species. Retrieved June 16, 2012.
  2. Kristy Venable (2004). "Photographic Guide to the Freshwater and Terrestrial Crabs of Dominica" (PDF). Texas A&M University. p. 16. Archived from the original (PDF) on August 10, 2014. Retrieved June 17, 2012.
  3. Richard G. Hartnoll (1988). "Biology of the land crabs: an introduction". In Warren W. Burggren; Brian Robert McMahon (eds.). Evolution, systematics, and geographical distribution. Cambridge University Press. pp. 6–54. ISBN 978-0-521-30690-4.
  4. Anne Prouzet & Pierre Noël (2009). "Guinotia dentata (Latreille, 1825)" (in French). DORIS. Retrieved June 17, 2012.
  5. Hans Hillewaert. "Guinotia dentata". BioLib. Retrieved June 16, 2012.
  6. Miculka (2009), p. 5.
  7. Chace & Hobbs (1969), pp. 156–160.
  8. Gilberto Rodriguez (1982). Les crabes d'eau douce d'Amérique. Famille des Pseudothelphusidae (PDF). Faune tropicale (in French). XXII. Paris: ORSTOM. pp. 188–192. ISBN 978-2-7099-0513-8.
  9. N. Cumberlidge (2008). "Guinotia dentata". IUCN Red List of Threatened Species. 2008: e.T134595A3983694. doi:10.2305/IUCN.UK.2008.RLTS.T134595A3983694.en.
  10. Chace & Hobbs (1969), p. 19.
  11. Miculka (2009), p. 7.
  12. Chace & Hobbs (1969), p. 42.
  13. Miculka (2009), p. 13.
  14. Gerhard Pretzmann (1965). "Vorläufiger Bericht über die Familie Pseudothelphusidae" [Preliminary report on the family Pseudothelphusidae] (PDF). Sitzungsberichte der Mathematisch-Naturwissenschaftlichen Klasse der Österreichischen Akademie der Wissenschaften, Wien (in German). 1: 1–11.
Bibliography
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