Global diversity of inland water cnidarians

Global diversity of inland water cnidarians is low, containing <40 species belonging to phylogenetically distinct groups representing independent invasion events: the common and cosmopolitan hydras (12-15species); the sporadically occurring freshwater medusae (6-16sp.); the Cordylophorinae (2sp.)...

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Bibliographic Details
Main Authors: Jankowski, Thomas, Collins, Allen, Campbell, Richard
Language:English
Published: 2018
Subjects:
Online Access:http://doc.rero.ch/record/321858/files/10750_2007_Article_9001.pdf
Description
Summary:Global diversity of inland water cnidarians is low, containing <40 species belonging to phylogenetically distinct groups representing independent invasion events: the common and cosmopolitan hydras (12-15species); the sporadically occurring freshwater medusae (6-16sp.); the Cordylophorinae (2sp.); the parasitic Polypodium (1sp.); the medusae occurring in saline lakes (4sp.). Freshwater cnidarians inhabit nearly all types of freshwater on all continents (except Antarctica), but only a few species have cosmopolitan distributions. Due to uncertainty in species knowledge, fine scale regions of endemicity are not yet clear