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Phylum Arthropoda
Subphylum Crustacea
Class Ostracoda
Order Halocyprida
Family Halocyprididae

Deeveya exleyi Kornicker & Iliffe, 1998


Taxonomic Characterization:
The carapace is oval in the lateral view, except for a straight dorsal margin and a slightly concave anterior margin. The right valve has a small tubercle on the dorsal margin near the posterior end. D. exleyi can be distinguished from other Deeveya species by the following characteristics:

  • The adult carapace's length is between 1.75 and 2.2 mm.
  • When the carapace is viewed with transmitted light, there are disks at intersections of the reticule that are wider than the walls of reticulations.
  • The width of distal end of the third joint of the first antenna is twenty-six percent the length of dorsal margin of joint.
  • The first endopodial joint of mandible has six medial bristles.
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Deeveya exleyi

Disposition of Specimen: National Museum of Natural History, Smithsonian Institution, catalog number USNM 194269.

Ecological Classification: Stygobitic

Size: Adult female holotype is 1.83 mm long without processes.

Number of Species in Genus: Seven, all from anchialine caves

Genus Range:

  • Bahamas:
    • Abaco Island: D. styrax Kornicker, 1990 and D. hirpex Kornicker, 1990
    • Eleuthera Island: D. jillae Kornicker & Iliffe, 1989
    • Exuma Cays: D. exleyi Kornicker & Iliffe, 1998
    • Grand Bahama Island: D. styrax Kornicker, 1990 and D. medix Kornicker, 1990
    • South Andros Island: D. bransoni Kornicker & Palmer, 1987
  • Caicos Islands:
    • Providenciales Island: D. spiralis Kornicker & Iliffe, 1985
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Deeveya: genus range

Species Range: Known only from Oven Rock Cave, Great Guana Cay, Exuma Cays, Great Bahama Bank, Bahamas

Closest Related Species: D. medix from Grand Bahama Island

Habitat: Anchialine limestone caves

Ecology: Only the holotype has been collected. It was free-swimming, at a depth of 0-1 m and at a salinity of 35 g/l.

Life History: The specimen contained nine unextruded eggs on the left side of the body.

Evolutionary Origins: The evolutionary origins of troglobitic ostracodes remain undetermined. They may have originated from the deep sea (Iliffe 1990:95; 1991:227-228) or from shallow water crevices (Danielopol, 1990:141; Danielopol et al., 1996:82). These ostracodes may have been in shallow anchialine pools and then migrated to the more stable cave environment (Iliffe in Kornicker & Iliffe, 1998:2). The genera Deeveya Kornicker & Iliffe, 1985 and Spelaeoecia Angel & Iliffe, 1987 comprise the subfamily Deeveyinae Kornicker & Iliffe, 1985. The distribution of this subfamily is restricted to the Caribbean, West Indies, Bermuda, and the Yucatan Peninsula.

Conservation Status: Restricted to a single cave (only the single female holotype has been collected).

References:

  • Danielopol, D.L. 1990. The origin of the anchialine cave fauna - the "deep sea" versus the "shallow water" hypothesis tested against the empirical evidence of the Thaumatocyprididae (Ostracoda). Bijdragen tot de Dierkunde, 60(3/4):137-143, figure 1.
  • Danielopol, D.L., A. Baltanas and G. Bonaduce. 1996. The darkness syndrome in subsurface-shallow and deep-sea dwelling Ostracoda (Crustacea). In: F. Uiblein, J. Ott and M. Stachowitsch, editors, Deep-Sea and Extreme Shallow-Water Habitats: Affinities and Adaptations. Biosystematics and Ecology Series, 11:123-144. Vienna: Austrian Academy of Sciences.
  • Iliffe, T.M. 1990. Crevicular dispersal of marine cave faunas. Memoires de Biospeologie, 17:93-96.
  • Iliffe, T.M. 1991. Anchialine fauna of the Galapagos Islands. In: M.J. James, editor, Galapagos Marine Invertebrates. Pages 209-231. New York: Plenum Press.
  • Kornicker, L.S. and T.M. Iliffe. 1985. Deeveyinae, a new subfamily of Ostracoda (Halocypridiae) from a marine cave on the Turks and Caicos Islands. Proceedings of the Biological Society of Washington, 98(2):476-493, 13 figures.
  • Kornicker, L.S. and T.M. Iliffe. 1989. New Ostracoda (Halocyprida: Thaumatocyprididae and Halocyprididae) from anchialine caves in the Bahamas, Palau and Mexico. Smithsonian Contributions to Zoology, 470:1-47, 22 figures, 8 tables.
  • Kornicker, L.S. and T.M. Iliffe. 1998. Myodocopid Ostracoda (Halocypridina, Cladocopina) from anchialine caves in the Bahamas, Canary Islands, and Mexico. Smithsonian Contributions to Zoology, 599:1-93, 62 figures, 2 maps, 9 tables.
  • Kornicker, L.S. and R.J. Palmer. 1987. Deeveya bransoni, a new species of troglobitic halocyprid ostracode from anchialine caves on South Andros Island, Bahamas (Crustacea: Ostracoda). Proceedings of the Biological Society of Washington, 100:610-623, 6 figures, 1 table.
  • Kornicker, L.S., J. Yager and D. Williams. 1990. Ostracoda (Halocyprididae) from anchialine caves in the Bahamas. Smithsonian Contributions to Zoology, 495:1-51, 30 figures, 4 tables.

Contributor: Louis S. Kornicker, National Museum of Natural History, Washington, DC


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