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Hemimysis anomala is established in the Shannon River Basin District in Ireland
Minchin, D.; Boelens, R. (2010). Hemimysis anomala is established in the Shannon River Basin District in Ireland. Aquat. Invasions 5(Suppl. 1): S71-S78. https://dx.doi.org/10.3391/ai.2010.5.s1.016
In: Aquatic Invasions. Regional Euro-Asian Biological Invasions Centre (REABIC): Helsinki. ISSN 1798-6540; e-ISSN 1818-5487
Peer reviewed article  
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Author keywords
    mysid; Shannon; lake; swarm
Auteurs  Top 
  • Minchin, D.
  • Boelens, R.
Abstract
    The Ponto-Caspian mysid shrimp Hemimysis anomala was found in Ireland for the first time in April 2008. During 2009 it was found throughout most of the Shannon River Navigation (~250km) occurring in swarms at estimated densities of ~6 per litre in shallows and in lower densities at depths of ~20m where its distribution overlaps with the native Mysis salemaai. Broods were found from March to September. It occurs mainly in lakes but small numbers were found at one river site. In summer, shallowwater specimens were found only during the night but in winter could be captured in daytime. It is not known by what means the species arrived in Ireland, or when.
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