Bahadzia stocki Holsinger, 1985
Taxonomic Characterization: Amphipod lacking eyes and pigment. B. stocki can be distinguished from other Bahadzia by the following characteristics by:
A key to the genus is presented in Jaume & Wagner, 1998.
Disposition of Specimens: National Museum of Natural History,
Smithsonian Institution; and in the private collection of John Holsinger.
Ecological Classification: Stygobitic
Size: The females' length ranges from 5.0 to 6.5 mm. The male's length was 5.0 mm.
Number of Species in Genus: Nine (8 anchialine and 1 freshwater), all stygobitic
Genus range for Bahadzia
Species Range: Known only from Airport Cave and The Hole,
Providenciales, Turks and Caicos Islands.
Closest Related Species: B. sentimana. The genus Bahadzia is restricted to the West Indies and Mexico. All species are closely related, and it is unclear if they are distinct species or are subspecies (Stock, 1986). The only freshwater species, B. latipalpus, has the most distinct morphology, while the anchialine species more closely resemble each other.
Habitat: Anchialine limestone cave.
Ecology: Collected from the bottom of polyhaline waters (18 ppt), at a depth of 12 to 18 m. The oxygen concentration at this depth is very low, less than 1 ppm.
Life History: All females had setose brood plates and appeared sexually mature. Amphipods do not have larvae or resting stages. These attributes affect their dispersal capacities and thus, contribute to their endemism.
Evolutionary Origins: The genus Bahadzia is phylogenetically with Mayaweckelia and Tuluweckelia. "It may be an ancient relict derived from an early hadziid fauna in the old Tethyan seaway" (Holsinger et al., 1986).
Conservation Status: Restricted to two caves on the island Providenciales.
Contributor: John R. Holsinger, Old Dominion University, Norfolk, VA
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