e-journal
Phylogenetic relationships within Aglaopheniidae (Cnidaria,Hydrozoa) reveal unexpected generic diversity
Prerequisites for conservation planning are inventories of species, which are often recognised and described using
morphological clues (The House of Lords 2003; The Royal Society 2003; Mace 2004). However, taxa identification
using morphological criteria may be challenging, especially in simple organisms that present few discriminant
synapomorphies and high phenotypic plasticity, such as cnidarians [see Daly et al. (2007) for a review]. Moreover,
molecular phylogenies have shown that a morphological approach is not always representative of the diversity and
phylogenetic relationships between species, genera, families and even higher levels in Cnidaria (e.g. Bridge et al. 1992;Chen et al. 1995; Berntson 1999; Daly et al. 2003; Benzoni et al. 2010; Budd et al. 2010; Brugler et al. 2013; Arrigoni et al. 2014; Kitano et al. 2014). This general problem in Cnidaria also pertains to Hydrozoa, (e.g. Bridge et al. 1992; Schuchert 1993; Bouillon & Boero 2000; Marques & Collins 2004; Leclere et al. 2009; Pe~na Cantero et al.
2009; Cartwright & Nawrocki 2010; Lindner et al. 2011),highlighting the need for a systematic revision of this
cnidarian class.
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