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Anodonta californiensis

(California Floater)

Interesting Facts

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Common Names

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Common Names in English:

California Floater

Description

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Habitat

Ecology: This is a low elevation species that is found in both lakes and lake-like stream environments (Frest and Johannes 1995).[1].

List of Habitats :

Taxonomy

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Notes

Name Status: Accepted Name .

Last scrutiny: 17-Oct-2001

Recently, Zanatta et al. (2007) supported the monophyly of both Pyganodon and Utterbackia using mutation coding of allozyme data , but also resolved the Eurasian Anodonta cygnea to Pyganodon, Utterbackia, and North American Anodonta. This indicates that futher phylogenetic analysis of the Anodontinae is required including both North American and Eurasian species. Since the time of Call (1884) there has been much confusion regarding the taxonomic status of this and other floaters (Anodonta) of western North America. Isaac Lea (1838) described Anodonta wahlametensis, Anodonta nuttalliana, and Anodonta oregonensis from the same site ("Wahlamet [Willamette River ], near its junction with the Columbia River [Oregon]") all in the same publication . Under the Rule of First Revisor (ICZN ), Call (1884) considered Anodonta nuttalliana to include, as synonyms, Anodonta wahlametensis, Anodonta oregonensis, and Anodonta californiensis. Recent authors (e.g. , Burch 1975, Clarke 1981, Turgeon et al. 1998), however, have considered A. californiensis, A. nuttalliana, and A. oregonensis to be distinct . Some authors even continue to recognize Anodonta wahlamatensis as a distinct species (Frest and Johannes 1995, Taylor 1981, Henderson 1929) while most place it in the synonymy of A. nuttalliana (Burch 1975, Turgeon et al. 1998). Whether A. wahlamatensis should be removed from the synonymy of A. nuttalliana will depend on future anatomical and genetic work on western Anodonta. Considerable taxonomic confusion surrounds this species complex. Mock et al. (2004, 2005) found a lack of resolution (very little nuclear diversity ) in phylogenetic reconstructions of Anodonta (A. californiensis, A. oregonensis, A. wahlamatensis) populations in the Bonneville Basin , Utah, but there was a tendency for the Bonneville Basin Anodonta (tentatively A. californiensis) to cluster with A. oregonensis from the adjacent Lahontan Basin in Nevada. Other taxonomic issues surrounding this and other members of western North American anodontines can be found in Chong et al. (2008).

A list of synonyms for this species can be found on The MUSSEL project web site (Graf and Cummings 2011).[1].

Similar Species

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Members of the genus Anodonta

ZipcodeZoo has pages for 20 species and subspecies in this genus:

A. anatina (Duck Mussel) · A. beringiana (Yukon Floater) · A. californiensis (California Floater) · A. cataracta marginata (Gaspe Floater) · A. couperiana (Barrel Floater) · A. cygnea (Swan Mussel) · A. dejecta (Woebegone Floater) · A. gibbosa (Inflated Floater) · A. grandis (Giant Floater) · A. grandis grandis (Giant Floater) · A. grandis simpsoniana (Giant Floater) · A. heardi (Apalachicola Floater) · A. imbecillis (Paper Pondshell) · A. implicata (Alewife Floater) · A. kennerlyi (Western Floater) · A. nuttalliana (Winged Floater) · A. oregonensis (Oregon Floater) · A. peggyae (Florida Floater) · A. suborbiculata (Flat Floater) · A. wahlametensis (Willamette Papershell)

More Info

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Further Reading

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Notes

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Contributors

Data Sources

Accessed through GBIF Data Portal February 28, 2008:

Identifiers

Footnotes

  1. Cummings, K. & Cordeiro, J. 2011. Anodonta californiensis. In: IUCN 2011. IUCN Red List of Threatened Species. Version 2011.2. <www.iucnredlist.org>. Downloaded on 29 January 2012. [back]
Last Revised: 7/14/2012