Abstract:
:The diversity of Hypancistrus species in the Xingu River is remarkable and the variation in color morphs represents a real challenge to taxonomists to delimit species boundaries. One of the most recognizable Hypancistrus complexes is the worm-lined species, known in the aquarium trade as King Tiger Plec in English, Hypancistrus "pão" in Portuguese or under the L-numbers L066 and L333 that represent two melanic pigment pattern phenotypes. To assess the identity of these two phenotypes, we described their karyotypes and sequenced part of the mitochondrial cytochrome oxidase I gene (DNA barcode). These fishes have 52 chromosomes (40 meta-submetacentric and 12 subtelo-acrocentric) and a strong heteromorphism in chromosome pair 21 was observed, which does not correlate with the two phenotypes or sex. DNA barcodes separated the samples analyzed from Hypancistrus zebra and other publicly available sequences of Loricariidae showing no divergence between the two phenotypes. The data set indicates that worm-lined Hypancistrus from the Xingu form a single species with clear chromosomal and melanic pigment pattern polymorphisms.
journal_name
Zebrafishjournal_title
Zebrafishauthors
Cardoso AL,Carvalho HL,Benathar TC,Serrão SM,Nagamachi CY,Pieczarka JC,Sousa LM,Ready JS,Noronha RCdoi
10.1089/zeb.2015.1213subject
Has Abstractpub_date
2016-06-01 00:00:00pages
209-16issue
3eissn
1545-8547issn
1557-8542journal_volume
13pub_type
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