Journal article
Saccular Transcriptome Profiles of the Seasonal Breeding Plainfin Midshipman Fish (Porichthys notatus), a Teleost with Divergent Sexual Phenotypes
PloS one, Vol.10(11), pp.e0142814-e0142814
2015
Handle:
https://hdl.handle.net/2376/110841
PMCID: PMC4641692
PMID: 26560106
Abstract
Acoustic communication is essential for the reproductive success of the plainfin midshipman fish (Porichthys notatus). During the breeding season, type I males use acoustic cues to advertise nest location to potential mates, creating an audible signal that attracts reproductive females. Type II (sneaker) males also likely use this social acoustic signal to find breeding pairs from which to steal fertilizations. Estrogen-induced changes in the auditory system of breeding females are thought to enhance neural encoding of the advertisement call, and recent anatomical data suggest the saccule (the main auditory end organ) as one possible target for this seasonal modulation. Here we describe saccular transcriptomes from all three sexual phenotypes (females, type I and II males) collected during the breeding season as a first step in understanding the mechanisms underlying sexual phenotype-specific and seasonal differences in auditory function. We used RNA-Seq on the Ion Torrent platform to create a combined transcriptome dataset containing over 79,000 assembled transcripts representing almost 9,000 unique annotated genes. These identified genes include several with known inner ear function and multiple steroid hormone receptors. Transcripts most closely matched to published genomes of nile tilapia and large yellow croaker, inconsistent with the phylogenetic relationship between these species but consistent with the importance of acoustic communication in their life-history strategies. We then compared the RNA-Seq results from the saccules of reproductive females with a separate transcriptome from the non-reproductive female phenotype and found over 700 differentially expressed transcripts, including members of the Wnt and Notch signaling pathways that mediate cell proliferation and hair cell addition in the inner ear. These data constitute a valuable resource for furthering our understanding of the molecular basis for peripheral auditory function as well as a range of future midshipman and cross-species comparative studies of the auditory periphery.
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Details
- Title
- Saccular Transcriptome Profiles of the Seasonal Breeding Plainfin Midshipman Fish (Porichthys notatus), a Teleost with Divergent Sexual Phenotypes
- Creators
- Joshua Faber-Hammond - College of Arts and Sciences, Washington State University, Vancouver, WA, United States of AmericaManoj P Samanta - Systemix Institute, Redmond, WA, United States of AmericaElizabeth A Whitchurch - Department of Biological Sciences, Humboldt State University, Arcata, CA, United States of AmericaDustin Manning - College of Arts and Sciences, Washington State University, Vancouver, WA, United States of AmericaJoseph A Sisneros - Department of Psychology, University of Washington, Seattle, WA, United States of AmericaAllison B Coffin - Department of Integrative Physiology and Neuroscience, Washington State University, Vancouver, WA, United States of America
- Publication Details
- PloS one, Vol.10(11), pp.e0142814-e0142814
- Academic Unit
- Integrative Physiology and Neuroscience, Department of
- Publisher
- United States
- Identifiers
- 99900547020001842
- Language
- English
- Resource Type
- Journal article