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Edgbastonia Coreena are also distinctly found in a large unnamed spring, south of the homestead “Coreena” (of related name), roughly 32 km north-east of the outback region of Barcaldine of Queensland.<ref>{{Cite web|last=Queensland|first=Outback|date=2014-11-12|title=Barcaldine {{!}} Outback Queensland|url=https://www.outbackqueensland.com.au/town/barcaldine/|access-date=2021-05-19|language=en-AU}}</ref><ref name=":0" />
Edgbastonia Coreena are also distinctly found in a large unnamed spring, south of the homestead “Coreena” (of related name), roughly 32 km north-east of the outback region of Barcaldine of Queensland.<ref>{{Cite web|last=Queensland|first=Outback|date=2014-11-12|title=Barcaldine {{!}} Outback Queensland|url=https://www.outbackqueensland.com.au/town/barcaldine/|access-date=2021-05-19|language=en-AU}}</ref><ref name=":0" />

== Taxonomy ==
The species accepted name is Edgbastonia Coreena and was formerly termed “Jardinella Coreena”.

It is of the genus (and subgenus) Edgbastonia(Barcaldinia) and part of the Tateidae family. <ref name=":4">{{Cite web|date=1996-08-01|title=Jardinella coreena: Ponder, W.F.|url=http://dx.doi.org/10.2305/iucn.uk.1996.rlts.t10921a3227566.en|access-date=2021-05-28|website=IUCN Red List of Threatened Species}}</ref><ref name=":5">{{Cite journal|last=Stauffer|first=Peter H.|last2=Hendley|first2=James W.|date=1997|title=Creating an effective fact sheet|url=http://dx.doi.org/10.3133/fs00897_1997|journal=Fact Sheet|doi=10.3133/fs00897_1997|issn=2327-6932}}</ref><ref name=":6">{{Cite web|date=1996-08-01|title=Jardinella coreena: Ponder, W.F.|url=http://dx.doi.org/10.2305/iucn.uk.1996.rlts.t10921a3227566.en|access-date=2021-05-28|website=IUCN Red List of Threatened Species}}</ref><ref name="WoRMSD" />

The Tateidae family is a new family of freshwater snail species that was branched from the previously larger variant of Hydrobiidae.<ref>{{Cite journal|last=Rossini|first=Renee A.|last2=Fensham|first2=Rod J.|last3=Walter|first3=Gimme H.|date=2017-12|title=Spatiotemporal variance of environmental conditions in Australian artesian springs affects the distribution and abundance of six endemic snail species|url=http://link.springer.com/10.1007/s10452-017-9633-4|journal=Aquatic Ecology|language=en|volume=51|issue=4|pages=511–529|doi=10.1007/s10452-017-9633-4|issn=1386-2588}}</ref>

It’s superfamily is that of truncatelloidea which is branched from the suborder Rissoidina, of the order littorinimorpha. It is part of the subclass (or infraclass) of Caenogastropoda. '''<ref name=":4" /><ref name=":5" /><ref name=":6" /><ref name="WoRMSD" />'''


== Ecology ==
== Ecology ==

Revision as of 12:50, 28 May 2021

Edgbastonia coreena
Scientific classification
Kingdom:
Animalia
Phylum:
Mollusca
Class:
Gastropoda
(unranked):
clade Caenogastropoda
clade Hypsogastropoda
clade Littorinimorpha
Superfamily:
Truncatelloidea
Family:
Tateidae
Genus:
Edgbastonia
Species:
E. coreena
Binomial name
Edgbastonia coreena
(Ponder & Clark, 1990)
Synonyms
  • Edgbastonia (Barcaldinia) coreena (Ponder & G. A. Clark, 1990)· accepted, alternate representation
  • Jardinella coreena Ponder & G. A. Clark, 1990 (basionym)

Edgbastonia coreena is a species of small freshwater snails which have an operculum, aquatic gastropod mollusks in the family Tateidae.[1]

This species is endemic to Australia and found in Queensland.

Description

Shell

The shell length is considered medium size of 2.61 to 3.09mm length (averaging 2.72mm in Males and 2.84mm in females).[2] Their width ranges from 2.17 to 2.55mm (with males extending means of 2.72mm and females with 2.84mm).[3] This is a significant reduction in size compared to Edgbastonia Corrugata’s (or Jardinella Corrugata’s)  shell length of 3.46 to 4.06mm.[3] As well as a significant size difference to the smaller, related species, Edgbastonia Allanwillsi which has a  length of 2.0 to 2.4mm and a width of 1.5 to 2.0mm.[2]

Edgbastonia Coreena’s general size is relatively middle with medium thickness and appear translucent and pale white.[2] The shell structure adopts a conventional trochiform shape, including a conical spiral with a flat base.[2] This spiral angle of the shell formation can be measured to range 76.58 to 89.9 with males averaging 79.07, a 10  difference to their female counterpart (80.86).[3] In comparison with the closely related species, Edgbastonia Corrugata, their shell is much larger with the similar trochiform structure.[2] Both genders exhibit similar medium thickness and appear white, almost translucent. Their spiral angles vary from 85.96-102.39 , where the mean average between male and female are 91.05 and 93.81, respectively.[3]


Edgbastonia Coreena’s teleoconch has a mean of 2.85 convex whorls.[3] Compared to other species such as the Edgbastonia Allanwillsi which has an average of four whorls, through which the teleoconch (larval shell) adopts a more of  a convex whorl and the upper shell ridges are stripped with visible growth line patterns.[2]Edgbastonia Corrugata conversely, has a teleoconch of 2.7 to 2.9, roughly 3 whorls as well as a convexity ratio of 0.28 to 0.38. The teleoconch is structured, exhibiting distinct axial and rigid growth lines.[2] The opening aperture of the Edgbastonia Corrugata has a length to shell ratio of 0.52 to 0.66 (of which 0.63 for males, and 0.6 for females).[2] The hollow aperture length stretches to 2.33mm and has 2.7, roughly 3 teleoconch whorls on it.[2] Whereas aperture opening of the Edgbastonia Coreena’s shell has a length of 0.52 to 0.56mm (almost identical between genders).[2]

The lip thickness of the Coreena is also of medium thickness and width, contrasting in smoothness to its outer rim which have 15.97 to 28.24 angular spirals of varying rigidity.[3] Whereas Corrugata’s inner lip thickness is narrower and spirals at an angle of 19.29 to 31.88 .[2]

The umbilicus, consistent with its general shell structure is also of medium width (relative to other Jardinella and Edgbastonia species) with width ranging from 0.22 to 0.4mm.[3] Conversely, Corrugata would have its umbilicus at width of 1.2mm.[2]

A Coreena's operculum is pigmented yellow and has a length of 1.22 to 1.4mm which is distanced roughly 3.41mm to the nucleus. [3] This is similar to other species such as with Edgbastonia Corrugata where their operculum is visibly yellowish and pale, with a length of 1.77 to 2.11.[3]

Body

The radula of the Coreena contains central tooth's that consists of averaging 3 to 4 lateral cusp protrusions that are each of ratio length 1.6 to 1.7. [2] A characteristic, mimicked with its neighboring species of Edgbastonia corrugate where its radula has central teeth with 4 lateral cusps 2 pairs of sharp, edged tooth's at the upper edge of the inverted U-shaped concavity.[2] There are 2 pairs of denticles in a Coreena, located at the upper dorsal edge of the U-shaped radula concavity. [2] Cephalic tentacles are triangular in structure and are either unpigmented or blackish grey, generally located on head which are themselves pigmented darkish grey.[2] Conversely, other species such as the Edgbastonia Corrugata has cephalic tentacles located protruding out of the upper dorsal area of the body surface.[2] Their head and foot are both black and darkish grey of colour and the middle-upper area is unpigmented and conversely, filled with cephalic tentacles.[2] However, the coil is pigmented although mostly darkish grey. [2]


The mantle cavity of a Coreena are composed of 25 to 28 filaments, shifted towards the right of apex.[2] It also has an osphradium located near the middle of the gills and respiratory organs.[2] It’s rectum does not arch and is positioned near the edge of body, beside the kidney.[2] Those characteristics are shared with various Edgbastonia species, namely the corrugate with its mantle cavity which also covers the central body  and has 26-28 filaments, apexed at the right and towards the centre of the body.[2] The hypobranchial gland that is below the gills are reduced or absent altogether. (Ponder & Clark, 1990)The rectum is slightly arched and is near the mantle edge.[2] The kidney does not extend forward into the central brain (pallial) roof and positioned near rectum, similar to the Coreena.[2]

Reproductive System

Male

Coreena males have a penial lobe that connects to the penis situated towards the distal part of body.[2] The penial organ is unpigmented and the duct or vas deference, coils once around the prostate gland.[2] Common trait shared with the corrugate where its penial lobe is situated away from the centre of the body and is structured bluntly with a “black zone” appearance at the terminal end of the base that is partially black itself.[2] The vas deferens or sperm transportation ducts coils a few loops across the prostate gland.[2]

Female

Coreena females have an oviduct located near the pallial, area of the brain and this is connected through a muscular vestibule tubule that further joins into the anterior of the capsule gland.[2] Bursal duct is located towards the middle of the anterior of the ovoid copulatrix, that respectively lies near the albumen gland.[2] The oviduct and bursal duct coils separate to the pallial wall. They are coiled in the shape of a U, except slightly more rigid and more bends.[2] This is concurrent with other species such as the Edgbastonia corrugate where its oviduct is located near the pallial and has a ventral channel near the vestibule tube.[2] The tube is extended through a protruding anterior edge of the capsule gland.[2] There are tissue folds that run down the oviduct opening towards the duct and the bursal duct appear from the middle anterior side of the duct which is posterior to the albumen gland. The oviduct is coiled in a plain U shape.[2] 

Distribution

Edgbastonia Coreena are an endemic freshwater gastropod species prevalent across the Great Artesian Basin (GAB). Australia’s GAB is considered the largest artesian basin system in the world.[4] It surround 1.7million square kilometres of land, covering parts of Queensland, New South Wales, South Australia and Northern Territory.[5]

Jardinella species have been found in both the eastern and western side of the Great Dividing Range, with at least 12 species located on the western side of the Great Dividing Range, covering coast of north-east of Queensland. [6] 

Jardinella and Edgbastonia species are concentrated in the north and east of Australia, whereas Fonschoclea and Trochidrobia in Southern Australia.[4] Edgbastonia Coreena, among 11 other Jardinella species has been found in at least four SG springs of Lake Eyre SG of South Australia, and various abundant springs in Queensland, namely Edgbaston Reserve.[4]

Edgbastonia Coreena are also distinctly found in a large unnamed spring, south of the homestead “Coreena” (of related name), roughly 32 km north-east of the outback region of Barcaldine of Queensland.[7][3]

Taxonomy

The species accepted name is Edgbastonia Coreena and was formerly termed “Jardinella Coreena”.

It is of the genus (and subgenus) Edgbastonia(Barcaldinia) and part of the Tateidae family. [8][9][10][1]

The Tateidae family is a new family of freshwater snail species that was branched from the previously larger variant of Hydrobiidae.[11]

It’s superfamily is that of truncatelloidea which is branched from the suborder Rissoidina, of the order littorinimorpha. It is part of the subclass (or infraclass) of Caenogastropoda. [8][9][10][1]

Ecology

Habitat

The GAB covers four of Australia’s states, notably Queensland and South Australia with an abundance of “oasis like” spring environments .[5][4] Freshwater springs located within the dry parts of Queensland and South Australia, rely on the GAB system to supply a constant source of water.[4] Thus, inducing a spring environment sustainable for endemic fauna and flora including freshwater snail species of the Jardinella and Edgbastonia genera, such as the Edgbastonia Coreena.[4]

Behaviour

Edgbastonia Coreena, among other species are isolated due to their geographical disposition and are susceptible to allopatric speciation.[4] Edgobastonia Coreena are found to be monophyletic, common among other neighbouring species, namely Jardinella accuminata, corrugate, edgbastonensis, isolate, jesswiseae, pallida, tumorosa and carnavonensis.[4]

See also

References

  1. ^ a b c MolluscaBase eds. (2021). MolluscaBase. Edgbastonia coreena (Ponder & G. A. Clark, 1990). Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=1341476 on 2021-04-28
  2. ^ a b c d e f g h i j k l m n o p q r s t u v w x y z aa ab ac ad ae af ag ah ai W.F, T., W.-H, R.E, H., R. A. B., PONDER, WILKE, ZHANG, GOLDING, FUKUDA, MASON (2008). "Edgbastonia alanwillsi n. gen & n. sp. (Tateinae: Hydrobiidae s.l.: Rissooidea: Caenogastropoda); a snail from an artesian spring group in western Queensland, Australia, convergent with some Asian Amnicolidae" (PDF). Molluscan Research. 28(2): 89–106.{{cite journal}}: CS1 maint: multiple names: authors list (link)
  3. ^ a b c d e f g h i j Ponder, Winston F.; Clark, G. A. (1990-11-16). "A radiation of hydrobiid snails in threatened artesian springs in western Queensland". Records of the Australian Museum. doi:10.3853/j.0067-1975.42.1990.119. Retrieved 2021-05-19.
  4. ^ a b c d e f g h Perez, Kathryn E.; Ponder, Winston F.; Colgan, Donald J.; Clark, Stephanie A.; Lydeard, Charles (March 2005). "Molecular phylogeny and biogeography of spring-associated hydrobiid snails of the Great Artesian Basin, Australia". Molecular Phylogenetics and Evolution. 34 (3): 545–556. doi:10.1016/j.ympev.2004.11.020.
  5. ^ a b Australia, c\=AU\;o\=Australia Government\;ou\=Geoscience (2014-05-15). "Great Artesian Basin". www.ga.gov.au. Retrieved 2021-05-19.{{cite web}}: CS1 maint: multiple names: authors list (link)
  6. ^ Ponder, Winston F. (1991-12-12). "The eastern seaboard species of Jardinella (Mollusca: Gastropoda: Hydrobiidae), Queensland rainforest-inhabiting freshwater snails derived from the west". Records of the Australian Museum. doi:10.3853/j.0067-1975.43.1991.48. Retrieved 2021-05-28.
  7. ^ Queensland, Outback (2014-11-12). "Barcaldine | Outback Queensland". Retrieved 2021-05-19.
  8. ^ a b "Jardinella coreena: Ponder, W.F." IUCN Red List of Threatened Species. 1996-08-01. Retrieved 2021-05-28.
  9. ^ a b Stauffer, Peter H.; Hendley, James W. (1997). "Creating an effective fact sheet". Fact Sheet. doi:10.3133/fs00897_1997. ISSN 2327-6932.
  10. ^ a b "Jardinella coreena: Ponder, W.F." IUCN Red List of Threatened Species. 1996-08-01. Retrieved 2021-05-28.
  11. ^ Rossini, Renee A.; Fensham, Rod J.; Walter, Gimme H. (2017-12). "Spatiotemporal variance of environmental conditions in Australian artesian springs affects the distribution and abundance of six endemic snail species". Aquatic Ecology. 51 (4): 511–529. doi:10.1007/s10452-017-9633-4. ISSN 1386-2588. {{cite journal}}: Check date values in: |date= (help)

Further reading

Retrieved from "https://en.wikipedia.org/w/index.php?title=Edgbastonia_coreena&oldid=1025597837"