Coxiella (gastropod)
| Coxiella | |
|---|---|
| Coxiella molesta | |
| Scientific classification | |
| 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 | |
| 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
- † Coxiella badgerensis (Johnston, 1879) - subrecent[2]
- Coxiella exposita Iredale, 1943[2]
- Coxiella glabra MacPherson, 1957[2]
- Coxiella glauertii MacPherson, 1954[2]
- Coxiella minima MacPherson, 1954[2]
- Coxiella molesta Iredale, 1943[2]
- Coxiella pyrrhostoma (Cox, 1868)[2]
- Coxiella striata (Reeve, 1842)[2]
- Coxiella striatula (Menke, 1843) - type species[2]
subgenus Coxielladda Iredale & Whitley, 1938[6]
- Coxiella gilesi (Angas, 1877)[2]
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
- ^ Smith E. A. (1894). Proceedings of the Malacological Society of London 1: 98.
- ^ a b c d e f g h i j k l m n 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.
- ^ a b c d 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.
- ^ a b 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.
- ^ 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.
- ^ Iredale T. & Whitley (1938). S. Aust. Nat. 18(4): 66.
- ^ 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.
- ^ 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.