Coxiella (gastropod)

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Coxiella
Coxiella molesta.jpg
Coxiella molesta
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Bacteria
Kingdom: Pseudomonadati
Phylum: Pseudomonadota
Class: Gammaproteobacteria
Order: Legionellales
Family: Coxiellaceae
Genus: Coxiella
E. A. Smith, 1894 [1]
Species

Coxiella exposita Coxiella glabra Coxiella minima Coxiella striata Coxiella striatula Coxiella pyrrhostoma Coxiella glauerti Coxiella gilesi Coxiella molesta

Contents

Diversity [2]
15 species

Coxiella is a genus of aquatic gastropod mollusks in the family Tomichiidae. These snails that live in saline lakes, and have gills and an operculum.

Distribution

The distribution of genus Coxiella includes Tasmania [2] and Australia: southern Australia, central Australia and northern Queensland. [3]

Species

Davis (1979) [2] recognized 10 species (9 in Australia) and one subrecent species Coxiella badgerensis in Tasmania. [2] However, recent phylogenetic studies have suggested that Coxiella contains at least 15 species with six species currently undescribed [4] . Coxiella is a Gondawana relict with its most recent ancestors from South Africa (Tomichia) and South America (Idiopyrgus) [4] . Coxiella appears have diversified during previous periods of aridification on the Australian continent [5] .

Species within the genus Coxiella include:

subgenus Coxiella

subgenus Coxielladda Iredale & Whitley, 1938 [6]

Ecology

This genus consists of halophilic species which occur in temporal and permanent saline lakes. [3] [7] Recently ecological studies have suggested that although all Coxiella species can tolerate a broad range of salinities that some species can tolerate significantly higher salinities than others [8] .

Coxiella snails are iteroparous. [3] When the saline lake dries out, adults of Coxiella are able to survive. [3]

References

  1. ↑ Smith E. A. (1894). Proceedings of the Malacological Society of London 1: 98.
  2. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Davis G. M. (1979). "The origin and evolution of the gastropod family Pomatiopsidae, with emphasis on the Mekong river Triculinae". Academy of natural Sciences of Philadelphia , Monograph 20: 1-120. ISBN   978-1-4223-1926-0. at Google Books.
  3. 1 2 3 4 Williams W. D. & Mellor M. W. (1991). "Ecology of Coxiella (Mollusca, Gastropoda, Prosobranchia), a snail endemic to Australian salt lakes". Palaeogeography, Palaeoclimatology, Palaeoecology 84(1-4): 339-355. doi : 10.1016/0031-0182(91)90053-T.
  4. 1 2 Lawrie, Angus D'Arcy; Chaplin, Jennifer; Kirkendale, Lisa; Whisson, Corey; Pinder, Adrian; Mlambo, Musa C. (July 2023). "Phylogenetic assessment of the halophilic Australian gastropod Coxiella and South African Tomichia resolves taxonomic uncertainties, uncovers new species and supports a Gondwanan link". Molecular Phylogenetics and Evolution. 184 107810. doi:10.1016/j.ympev.2023.107810.
  5. ↑ Lawrie, Angus D’Arcy; Chaplin, Jennifer; Rahman, Mahabubur; Islam, Md Aminul; Webzell, Kyle (July 2025). "Insights into the recent evolutionary history of salt lake gastropods (Coxiella) in Australia". Hydrobiologia. 852 (13): 3309–3325. doi:10.1007/s10750-025-05813-5. ISSN   0018-8158.
  6. ↑ Iredale T. & Whitley (1938). S. Aust. Nat. 18(4): 66.
  7. ↑ Kameda Y. & Kato M. (2011). "Terrestrial invasion of pomatiopsid gastropods in the heavy-snow region of the Japanese Archipelago". BMC Evolutionary Biology 11: 118. doi : 10.1186/1471-2148-11-118 .
  8. ↑ Lawrie, Angus D’Arcy; Chaplin, Jennifer; Rahman, Mahabubur; Islam, Md. Aminul; Pinder, Adrian (Jan 2024). "Experimental and field evidence suggests extreme salinity tolerances in Coxiella gastropods from Australian salt lakes". Hydrobiologia. 851 (1): 205–221. doi:10.1007/s10750-023-05329-w. ISSN   0018-8158.
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