Transcriptomic profiling of male European eel ( Anguilla anguilla ) livers at sexual maturity

Churcher, Allison M.; Pujolar, J. M.; Milan, Massimo; Huertas, Mar; Hubbard, Peter C.; Bargelloni, Luca; Patarnello, Tomaso; Marino, Ilaria A. M.; Zane, Lorenzo; Canário, Adelino V. M.

doi:10.1016/j.cbd.2015.07.002

Cited by 7 publications

(16 citation statements)

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“…The 3 0 UTR regions have an important role in post-transcriptional control of gene expression (Hesketh, 2004;Barrett, Fletcher, & Wilton, 2012). Here, polymorphisms found in SULT1B1 and cwf19 gene may thus affect transcription, as was documented for European Eel (SULT6B1 was overexpressed in liver of sexually mature males; Churcher et al, 2015) and Turbot (cwf19 was underexpressed in females; Ribas et al, 2015). Although the functional annotation for these two genes in American lobster is unknown, future work may provide information on the sex determi- Palti et al, 2015;Sutherland et al, 2016).…”

Section: Candidate Genes Involved In Sexual Differentiation In Amermentioning

confidence: 66%

“…These genes were sulfotransferase family cytosolic 1B member 1 (hereafter SULT1B1 ) and pre‐mRNA‐splicing factor cwf19 (hereafter cwf19) and are involved in steroid metabolism and mRNA splicing, respectively. Both genes that were previously reported to influence sex determination in fishes (Devlin & Nagahama, ), namely in European Eel ( Anguilla anguilla; Churcher et al., ) and Turbot ( Scophthalmus maximus; Ribas et al., ).…”

Section: Resultsmentioning

confidence: 98%

“…Steroids play important roles in regulating physiological functions related to reproduction and sex differentiation in fishes (James, ). Sulfotransferase genes, such as SULT1 , are linked to sex determination in house mouse ( Mus musculus ; Dunn, Gleason, & Hartley, ), mussels ( Mytilus galloprovincialis ; Atasaral Şahin et al., ), European Eel ( Anguilla anguilla; Churcher et al., ) and Turbot ( Scophthalmus maximus; Ribas et al., ). For instance, sulfotransferase 6B1‐like gene ( SULT6B1 ) was expressed at higher levels in the livers of sexually mature European Eel males relative to females (Churcher et al., ).…”

Section: Discussionmentioning

confidence: 99%

“…Sulfotransferase genes, such as SULT1 , are linked to sex determination in house mouse ( Mus musculus ; Dunn, Gleason, & Hartley, ), mussels ( Mytilus galloprovincialis ; Atasaral Şahin et al., ), European Eel ( Anguilla anguilla; Churcher et al., ) and Turbot ( Scophthalmus maximus; Ribas et al., ). For instance, sulfotransferase 6B1‐like gene ( SULT6B1 ) was expressed at higher levels in the livers of sexually mature European Eel males relative to females (Churcher et al., ). In addition, one sulfotransferase gene ( hs3st1 l2 ) was associated with differential expression between sexes at sexual maturity in Turbot (Ribas et al., ).…”

Section: Discussionmentioning

confidence: 99%

“…For instance, sulfotransferase 6B1-like gene (SULT6B1) was expressed at higher levels in the livers of sexually mature European Eel males relative to females (Churcher et al, 2015). In addition, one sulfotransferase gene (hs3st1 l2) was associated with differential expression between sexes at sexual maturity in Turbot (Ribas et al, 2015).…”

Section: Candidate Genes Involved In Sexual Differentiation In Amermentioning

confidence: 99%

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Sex matters in massive parallel sequencing: Evidence for biases in genetic parameter estimation and investigation of sex determination systems

et al. 2017

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Using massively parallel sequencing data from two species with different life history traits, American lobster (Homarus americanus) and Arctic Char (Salvelinus alpinus), we highlight how an unbalanced sex ratio in the samples and a few sex-linked markers may lead to false interpretations of population structure and thus to potentially erroneous management recommendations. Here, multivariate analyses revealed two genetic clusters separating samples by sex instead of by expected spatial variation: inshore and offshore locations in lobster, or east and west locations in Arctic Char. To further investigate this, we created several subsamples artificially varying the sex ratio in the inshore/offshore and east/west groups and then demonstrated that significant genetic differentiation could be observed despite panmixia in lobster, and that F values were overestimated in Arctic Char. This pattern was due to 12 and 94 sex-linked markers driving differentiation for lobster and Arctic Char, respectively. Removing sex-linked markers led to nonsignificant genetic structure in lobster and a more accurate estimation of F in Arctic Char. The locations of these markers and putative identities of genes containing or nearby the markers were determined using available transcriptomic and genomic data, and this provided new information related to sex determination in both species. Given that only 9.6% of all marine/diadromous population genomic studies to date have reported sex information, we urge researchers to collect and consider individual sex information. Sex information is therefore relevant for avoiding unexpected biases due to sex-linked markers as well as for improving our knowledge of sex determination systems in nonmodel species.

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Section: Candidate Genes Involved In Sexual Differentiation In Amermentioning

confidence: 66%

Section: Resultsmentioning

confidence: 98%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Candidate Genes Involved In Sexual Differentiation In Amermentioning

confidence: 99%

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Sex matters in massive parallel sequencing: Evidence for biases in genetic parameter estimation and investigation of sex determination systems

et al. 2017

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Investigating Diadromy in Fishes and Its Loss in an -Omics Era

Delgado

Ruzzante

2020

iScience

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Summary Diadromy, the predictable movements of individuals between marine and freshwater environments, is biogeographically and phylogenetically widespread across fishes. Thus, despite the high energetic and potential fitness costs involved in moving between distinct environments, diadromy appears to be an effective life history strategy. Yet, the origin and molecular mechanisms that underpin this migratory behavior are not fully understood. In this review, we aim first to summarize what is known about diadromy in fishes; this includes the phylogenetic relationship among diadromous species, a description of the main hypotheses regarding its origin, and a discussion of the presence of non-migratory populations within diadromous species. Second, we discuss how recent research based on -omics approaches (chiefly genomics, transcriptomics, and epigenomics) is beginning to provide answers to questions on the genetic bases and origin(s) of diadromy. Finally, we suggest future directions for -omics research that can help tackle questions on the evolution of diadromy.

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Characterization of a β2 adrenergic receptor protein precursor in the European eel ( Anguilla anguilla ) and its tissue distribution across silvering

Franzellitti

Kiwan

Valbonesi

et al. 2018

Marine Environmental Research

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Transcriptomic profiling of male European eel ( Anguilla anguilla ) livers at sexual maturity

Cited by 7 publications

References 62 publications

Sex matters in massive parallel sequencing: Evidence for biases in genetic parameter estimation and investigation of sex determination systems

Sex matters in massive parallel sequencing: Evidence for biases in genetic parameter estimation and investigation of sex determination systems

Investigating Diadromy in Fishes and Its Loss in an -Omics Era

Characterization of a β2 adrenergic receptor protein precursor in the European eel ( Anguilla anguilla ) and its tissue distribution across silvering

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