| 词条 | Asellus aquaticus |
| 释义 |
| name = Asellus aquaticus | image = Waterlouse (Asellus aquaticus).jpg | image2 = Asellus aquaticus.jpg | regnum = Animalia | phylum = Arthropoda | subphylum = Crustacea | classis = Malacostraca | ordo = Isopoda | familia = Asellidae | genus = Asellus | species = 'A. aquaticus | binomial = Asellus aquaticus | binomial_authority = (Linnaeus, 1758) }} Asellus aquaticus is a freshwater crustacean resembling a woodlouse. It is known by common names including "waterlouse", "aquatic sowbug" and "water hoglouse". EcologyKnown as "cress bugs" to anglers, Asellus aquaticus is common throughout the temperate zone including Europe, Russia, and North America.[1] It is found in rivers, streams and standing water particularly where there are plenty of stones under which it hides although not where the water is strongly acidic.[2] It is a detrivore. Asellus aquaticus is relatively tolerant of a range of pollutants and has been used as an indicator of water quality.[1]Life Cycle and Reproduction'Asellus aquaticus' can breed throughout the year, if the temperature is high enough: they do not breed under cold temperatures. Maturity can be reached in few months under warm summer temperatures, but maturation may take as much as two years in permanently cold water bodies (e.g., high-latitude or mountain waters).[3] Life span varies similarly: from 9 months in South Africa to 20 months in Northern Europe. Females carry eggs in brood pouches underneath their body.[4] Conservation{{Portal|Crustaceans|Arthropods}}A number of subspecies are considered to be endangered including:
References1. ^1 {{cite journal |author=Lorraine Maltby |year=1991 |title=Pollution as a probe of life-history adaptation in Asellus aquaticus (Isopoda) |journal=Oikos |volume=61 |issue=1 |pages=11–18 |jstor=3545402}} {{Taxonbar|from=Q586336}}2. ^{{cite book |author=Brian A. Whitton |year=1982 |title=Rivers, Lakes and Marshes |pages=131 |publisher=Hodder & Stoughton |location=London |isbn=0-340-23155-6}} 3. ^{{cite journal |author=Karen Anna Økland |year=1978 |title=Life history and growth of Asellus aquaticus (L.) in relation to environment in a eutrophic lake in Norway |journal=Hydrobiologia |volume=59 |issue=3 |pages=243–259 |doi=10.1007/BF00036504}} 4. ^{{cite book |author=P. Sterry |year=1997 |title=Complete British Wildlife |pages=212 |publisher=Collins |isbn=0-583-33638-8}} 5. ^{{IUCN2009.2 |assessor=Boris Sket |year=1996 |title=Asellus aquaticus ssp. carniolicus |id=2157 |downloaded=May 15, 2010}} 6. ^{{IUCN2009.2 |assessor=Boris Sket |year=1996 |title=Asellus aquaticus ssp. cavernicolus |id=2158 |downloaded=May 15, 2010}} 7. ^{{IUCN2009.2 |assessor=Boris Sket |year=1996 |title=Asellus aquaticus ssp. cyclobranchialis |id=2159 |downloaded=May 15, 2010}} 5 : Asellota|Freshwater crustaceans of Europe|Freshwater crustaceans of Asia|Freshwater crustaceans of North America|Crustaceans described in 1758 |
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