Eatoniella stewartiana

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Eatoniella stewartiana
Eatoniella stewartiana (Ponder, 1965) (AM MA71272).jpg
Holotype of Eatoniella stewartiana from Auckland War Memorial Museum
Scientific classification Red Pencil Icon.png
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Caenogastropoda
Order: Littorinimorpha
Family: Eatoniellidae
Genus: Eatoniella
Species:
E. stewartiana
Binomial name
Eatoniella stewartiana
(Ponder, 1965)
Synonyms [1]
  • Eatoniella (Eatoniella) stewartianaPonder 1965

Eatoniella stewartiana is a species of marine gastropod mollusc in the family Eatoniellidae. [1] First described by Winston Ponder in 1965, it is endemic to the waters of New Zealand.

Contents

Description

Eatoniella stewartiana has an evenly retracted outer lip. The shell is purplish black in colour, with a pale grey/transparent protoconch. [2] The species measures 2mm by 1.15mm. [3]

The species closely resembles Eatoniella kerguelenensis subsp. chiltoni, but can be differentiated by its smaller sizer, thinner, emi-transparent shell and false margined sutures. [2]

Distribution

The species is endemic to New Zealand. [1] The holotype was collected in September 1962 by Elsie Smith on Ocean Beach, Stewart Island, near high tide on Bostrychia red algae. [4] The species is found in the waters of Stewart Island and the south-east of the South Island, living in algae in most of intertidal zone. [2] On the West Coast, the species has been recorded as far north as Haast, [5] and on the east coast as far north as Waikouaiti. [6] The species appears to replace Eatoniella kerguelenensis subsp. chiltoni in Southland and Stewart Island. Both species overlap in range in the Otago Harbour. [2]

Fossil evidence has shown that Eatoniella stewartiana was very common on the coastal terraces near modern-day Kaikōura Peninsula during the Pleistocene era. [7]

Related Research Articles

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<span class="mw-page-title-main">Eatoniellidae</span> Family of gastropods

Eatoniellidae, commonly known as eatoniellids, are a taxonomic family of minute sea snails, marine gastropod molluscs in the superfamily Cingulopsoidea.

Eatoniella kerguelenensis is a species of minute sea snail, a marine gastropod mollusk in the family Eatoniellidae, the eatoniellids.

<i>Eatoniella</i> Genus of gastropods

Eatoniella is a genus of minute sea snails, marine gastropod mollusks in the family Eatoniellidae, the eatoniellids.

<i>Crassitoniella carinata</i> Species of gastropod

Crassitoniella carinata is a species of marine gastropod mollusc in the family Eatoniellidae. It was first described by Winston Ponder in 1965, and it is the type species for the genus Crassitoniella. It is endemic to the waters of New Zealand.

<i>Eatoniella albocolumella</i> Species of gastropod

Eatoniella albocolumella is a species of marine gastropod mollusc in the family Eatoniellidae. It was first described by Winston Ponder in 1965. It is endemic to the waters of New Zealand.

<i>Eatoniella atervisceralis</i> Species of gastropod

Eatoniella atervisceralis is a species of marine gastropod mollusc in the family Eatoniellidae. It was first described by Winston F. Ponder in 1965. It is endemic to the waters of New Zealand.

<i>Eatoniella bathamae</i> Species of gastropod

Eatoniella bathamae is a species of marine gastropod mollusc in the family Eatoniellidae. It was first described by Winston F. Ponder in 1965. It is endemic to the waters of New Zealand.

<i>Eatoniella delli</i> Species of gastropod

Eatoniella delli is a species of marine gastropod mollusc in the family Eatoniellidae. It was first described by Winston F. Ponder in 1965. It is endemic to the waters of New Zealand.

<i>Eatoniella fossa</i> Species of gastropod

Eatoniella fossa is a species of marine gastropod mollusc in the family Eatoniellidae. It was first described by Winston F. Ponder in 1965. It is endemic to the waters of New Zealand.

<i>Eatoniella globosa</i> Species of gastropod

Eatoniella globosa is a species of marine gastropod mollusc in the family Eatoniellidae. It was first described by Winston F. Ponder in 1965. It is endemic to the waters of New Zealand.

<i>Eatoniella fuscosubucula</i> Species of gastropod

Eatoniella fuscosubucula is a species of marine gastropod mollusc in the family Eatoniellidae. It was first described by Winston F. Ponder in 1965. It is endemic to the waters of New Zealand.

<i>Eatoniella latebricola</i> Species of gastropod

Eatoniella latebricola is a species of marine gastropod mollusc in the family Eatoniellidae. It was first described by Winston F. Ponder in 1965. It is endemic to the waters of New Zealand.

<i>Eatoniella mortoni</i> Species of gastropod

Eatoniella mortoni is a species of marine gastropod mollusc in the family Eatoniellidae. First described by Winston Ponder in 1965, it is endemic to the waters of New Zealand. The species has been used to study the effects of ocean acidification, as it is known to thrive in carbon dioxide-rich environments.

<i>Eatoniella notalabia</i> Species of gastropod

Eatoniella notalabia is a species of marine gastropod mollusc in the family Eatoniellidae. It was first described by Winston F. Ponder in 1965. It is endemic to the waters of New Zealand.

<i>Eatoniella perforata</i> Species of gastropod

Eatoniella perforata is a species of marine gastropod mollusc in the family Eatoniellidae. First described by Winston Ponder in 1965, it is endemic to the waters of New Zealand. Compared to most other Eatoniella species of New Zealand, E. perforata is found in relatively deep water.

<i>Eatoniella pullmitra</i> Species of gastropod

Eatoniella pullmitra is a species of marine gastropod mollusc in the family Eatoniellidae. First described by Winston Ponder in 1965, it is endemic to the waters of New Zealand. The species has a preference for living on algae found in the sublittoral zone.

<i>Eatoniella rakiura</i> Species of gastropod

Eatoniella rakiura is a species of marine gastropod mollusc in the family Eatoniellidae. First described by Winston Ponder in 1965, it is endemic to the waters of New Zealand. The first specimens of the species were exclusively found around Stewart Island.

<i>Eatoniella smithae</i> Species of gastropod

Eatoniella smithae is a species of marine gastropod mollusc in the family Eatoniellidae. First described by Winston Ponder in 1965, it is endemic to the waters of New Zealand, and is one of the most common marine species found around Stewart Island.

<i>Eatoniella varicolor</i> Species of gastropod

Eatoniella varicolor is a species of marine gastropod mollusc in the family Eatoniellidae. First described by Winston Ponder in 1965, it is endemic to the waters of New Zealand.

References

  1. 1 2 3 Bieler R, Bouchet P, Gofas S, Marshall B, Rosenberg G, La Perna R, Neubauer TA, Sartori AF, Schneider S, Vos C, ter Poorten JJ, Taylor J, Dijkstra H, Finn J, Bank R, Neubert E, Moretzsohn F, Faber M, Houart R, Picton B, Garcia-Alvarez O, eds. (2022). "Eatoniella stewartiana Ponder, 1965". MolluscaBase. World Register of Marine Species . Retrieved 15 November 2022.
  2. 1 2 3 4 Ponder, W. F. (1965). "The Family Eatoniellidae in New Zealand". Records of the Auckland Institute and Museum. 6: 47–99. ISSN   0067-0464. JSTOR   42906115. Wikidata   Q58676802.
  3. ↑ "Eatoniella stewartiana". New Zealand Mollusca. Retrieved 20 November 2022.
  4. ↑ Blom, Wilma (2022). "Fossil and Recent molluscan types in the Auckland War Memorial Museum. Part 4: Gastropoda (Caenogastropoda – Neocyclotidae to Epitoniidae). [Cyclophoroidea, Cerithioidea, Littorinimorpha]". Records of the Auckland Museum . 56: 39–62. doi:10.32912/ram.2020.55.7. ISSN   2422-8567 . Retrieved 20 October 2022.
  5. ↑ "marine snail, Eatoniella stewartiana Ponder, 1965". Te Papa . Retrieved 19 November 2022.
  6. ↑ "marine snail, Eatoniella stewartiana Ponder, 1965". Te Papa . Retrieved 19 November 2022.
  7. ↑ Ota, Yoko; Pillans, Brad; Berryman, Kelvin; Beu, Alan; Fujimori, Takatoshi; Miyauchi, Takahiro; Berger, Glenn; Beu, A.G.; Climo, F.M. (1 March 1996). "Pleistocene coastal terraces of Kaikoura Peninsula and the Marlborough coast, South Island, New Zealand". New Zealand Journal of Geology and Geophysics. 39 (1): 51–73. doi:10.1080/00288306.1996.9514694. ISSN   0028-8306 . Retrieved 19 November 2022.
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