Abstract:
:Darters (Percidae: Etheostomatinae), a species-rich group of North American freshwater fishes, vary in the presence of a premaxillary fraenum, a strip of skin that connects the premaxillary bones to the snout, and it is hypothesized that this trait is a trophic adaptation to particular substrata. Ancestral state reconstructions and analyses of phylogenetic associations between presence of the premaxillary fraenum and preferred stream substratum were conducted in a clade of closely related darters (snubnose darters and allies) that vary in morphology and habitat preferences. The most recent common ancestor of this clade was inferred to possess a fraenum and to inhabit rocky substrata, consistent with previous hypotheses, but a significant correlation between fraenum presence and substratum type across the phylogeny was not found.
journal_name
J Fish Bioljournal_title
Journal of fish biologyauthors
Ciccotto PJ,Mendelson TCdoi
10.1111/jfb.12766subject
Has Abstractpub_date
2015-10-01 00:00:00pages
1090-8issue
4eissn
0022-1112issn
1095-8649journal_volume
87pub_type
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