Cross-tissue and cross-species analysis of gene expression in skeletal muscle and electric organ of African weakly-electric fish (Teleostei; Mormyridae)

BMC Genomics
Francesco LamannaRalph Tiedemann

Abstract

African weakly-electric fishes of the family Mormyridae are able to produce and perceive weak electric signals (typically less than one volt in amplitude) owing to the presence of a specialized, muscle-derived electric organ (EO) in their tail region. Such electric signals, also known as Electric Organ Discharges (EODs), are used for objects/prey localization, for the identification of conspecifics, and in social and reproductive behaviour. This feature might have promoted the adaptive radiation of this family by acting as an effective pre-zygotic isolation mechanism. Despite the physiological and evolutionary importance of this trait, the investigation of the genetic basis of its function and modification has so far remained limited. In this study, we aim at: i) identifying constitutive differences in terms of gene expression between electric organ and skeletal muscle (SM) in two mormyrid species of the genus Campylomormyrus: C. compressirostris and C. tshokwe, and ii) exploring cross-specific patterns of gene expression within the two tissues among C. compressirostris, C. tshokwe, and the outgroup species Gnathonemus petersii. Twelve paired-end (100 bp) strand-specific RNA-seq Illumina libraries were sequenced, producing circ...Continue Reading

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Citations

Oct 23, 2016·Journal of Physiology, Paris·William R PitchersJason R Gallant
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Jan 11, 2020·BMC Evolutionary Biology·Mauricio LosillaJason R Gallant
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Datasets Mentioned

BETA
SRP050174

Methods Mentioned

BETA
RNA-Seq
transgenic
dissection
PCR
Chip

Software Mentioned

Cytoscape
Blast
Bioconductor package edgeR
R
FastQC
perl
RSEM
Flexbar
ClueGO
Perl script

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