A. [3][7], The distribution also includes Mediterranean regions and Africa. [5][6] However, when Physella heterostropha is considered to be a synonym, then the indigenous distribution of the species includes North America. Though we edit our accounts for accuracy, we cannot guarantee all information in those accounts. These snails can adapt to a large range of water conditions - Prefer temperatures of 65F-85F - Can survive a large range of pH levels - Has gills and can breathe underwater Using the changes in the shell length and the body weight of the snails as surrogate, the population growth of the snails was estimated along with longevity and the fecundity schedule. Life history: Physa acuta snails are hermaphrodites capable of self-fertilisation. Taxonomic Checklist: Physa acuta Draparnaud (introduced from Europe or North America). The shells of Physella species have a long and large aperture, a pointed spire, and no operculum. So they are not all bad. [12], This species lives in freshwater rivers, streams, lakes, ponds, and swamps. This species successfully co - exists with other alien gastropods for example with Potamopyrgus antipodarum in many doi: 10.2305 IUCN.UK.2011 - 1.RLTS.T6067A12393869.en. The shells are thin and corneous and rather transparent. Glossary | [7], This article incorporates CC-BY-2.0 text (but not under GFDL) from reference.[7]. 2006 IUCN Red List of Threatened Species. Prior studies have led to conflicting views of how P. acuta populations are connected and genetic diversity is partitioned globally. Haitia acuta. & Perera S. (2010). Physella acuta is a species of small, left-handed or sinistral, air-breathing freshwater snail, an aquatic gastropod mollusk in the family Physidae. Physella heterostropha (Say, 1817)[3] The life span was 193 days with an increased overall growth rate of 0.4 mm/week. Encyclopedia of Life ID: 452902 BioLib taxon ID: 2573 Global Biodiversity Information Facility ID: 5189806 WoRMS-ID for taxa: 234093 iNaturalist taxon ID: 448024 NBN System Key: NHMSYS0001702159 ADW taxon ID: Physella_acuta IRMNG ID: 10599761 Because Physella acuta forages mainly on epiphytic vegetation and on the macrophytes, whereas other gastropods (Planorbis planorbis, Radix ovata) exploit the algal cover or phytobentos on the bottom, competition between Physella acuta and other gastropods appears to be minimal. Egg capsules contained from 20 – … Physella species Physella acuta Name Synonyms Aplecta orbignyi Mazé, 1883 Haitia acuta (Draparnaud, 1805) Physa acuta Draparnaud, 1805 Physa borbornica Férussac, 1827 Physa canariensis Bourguignat, 1856 Physa fuerteventurae Mousson, 1872 The common backswimmer is a native heteropteran insect and a predator of invertebrates and vertebrates, including tadpoles ( Pujol-Buxó et al. Life Span: Up to 3.5 years; Other details: Nocturnal clean-up crew that comes out when the lights go off (They usually burrow under the substrate during the day) - Very hardy! Eggs become embryonated in freshwater over ~2 weeks ; embryonated eggs release miracidia, which invade a suitable snail intermediate host. [7], This species successfully co-exists with other alien gastropods: for example with Potamopyrgus antipodarum in many streams, lakes and ponds in New Zealand and with Lithoglyphus naticoides in the Danube River. Disclaimer: The Animal Diversity Web is an educational resource written largely by and for college students.ADW doesn't cover all species in the world, nor does it include all the latest scientific information about organisms we describe. Behav. 1989, Sloane & Norris 2002, true molluscan gill lost, replaced by various types of secondary gills in some groups, position of eyes relative to tentacles variable, usually at inner bases or at middle of bases, hermaphroditic (simultaneous or protandric), operculum typically absent, present in 2 basal families (one estuarine), mantle cavity modified as pulmonary cavity, radula with many tooth rows (most teeth rather similar), shell coiled, sinistral, spire short to moderate. Physella acuta – a freshwater pulmonate snail with a sinistral coiling shell. An Physella acuta in nahilalakip ha genus nga Physella, ngan familia nga Physidae. Preferred name. In these species the ctendia have both been lost and have been replaced with a kind of lung called a ‘pallial lung’. In addition, Physa acuta, Physa heterostropha (Say, 1817) and Physa integra (Haldeman, 1841) are synonyms of Physella acuta (Draparnaud, 1805). Physella heterostropha halei of the Central and Southern USA, about 1 cm long. Common names include European physa, tadpole snail, bladder snail, and acute bladder snail. Cited 30 April 2007. The sinistral shell of Physella acuta Physidae , common name the bladder snails , is a monophyletic taxonomic family of small air-breathing freshwater snails , aquatic pulmonate gastropod molluscs in the clade Hygrophila . Physa acuta is the most common and widespread freshwater gastropod inhabiting our entire 14-state study area, a title it could probably claim for North America, and quite possibly the world (Dillon et al., 2002). Mortality, weight and size of adults Mortality of Physella acuta did not significantly differ among controls and the VZ treatments in R 1 and R 2. Snails in the family Physidae have shells that are sinistral, which means that if the shell is held with the aperture facing the observer and the spire pointing up, then the aperture is on the left-hand side. 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