Species and hybrids in the genus Diaphanosoma Fischer, 1850 (Crustacea: Branchiopoda: Cladocera)

摘要

Highlights?Diaphanosomaare ecologically similar toDaphniabut found mostly in the tropics.?We performed an extensive survey of genetic diversity inDiaphanosomain Eurasia.?We revealed the existence of complexes of cryptic species and hybridization events.?No clear ecological or evolutionary pattern is present in the occurrence of hybrids.AbstractCladocerans are well-studied planktonic crustaceans, especially those of the genusDaphniain which interesting evolutionary questions have been addressed on speciation processes. The aim of the present study is to demonstrate that other genera of cladocerans show similar levels of cryptic diversity, intraspecific gene flow, and thus become useful model systems for comparison. In order to do so, we chose the genusDiaphanosoma, widespread in tropical and temperate