Gutenberg Open Science: Genomic basis of ecological niche divergence among cryptic sister species of non-biting midges

Please use this identifier to cite or link to this item: http://doi.org/10.25358/openscience-7974

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DC Field	Value	Language
dc.contributor.author	Schmidt, Hanno	-
dc.contributor.author	Greshake, Bastian	-
dc.contributor.author	Feldmeyer, Barbara	-
dc.contributor.author	Hankeln, Thomas	-
dc.contributor.author	Pfenninger, Markus	-
dc.date.accessioned	2022-10-13T09:14:04Z	-
dc.date.available	2022-10-13T09:14:04Z	-
dc.date.issued	2013	-
dc.identifier.uri	https://openscience.ub.uni-mainz.de/handle/20.500.12030/7989	-
dc.description.abstract	BACKGROUND There is a lack of understanding the evolutionary forces driving niche segregation of closely related organisms. In addition, pinpointing the genes driving ecological divergence is a key goal in molecular ecology. Here, larval transcriptome sequences obtained by next-generation-sequencing are used to address these issues in a morphologically cryptic sister species pair of non-biting midges (Chironomus riparius and C. piger). RESULTS More than eight thousand orthologous open reading frames were screened for interspecific divergence and intraspecific polymorphisms. Despite a small mean sequence divergence of 1.53% between the sister species, 25.1% of 18,115 observed amino acid substitutions were inferred by α statistics to be driven by positive selection. Applying McDonald-Kreitman tests to 715 alignments of gene orthologues identified eleven (1.5%) genes driven by positive selection. CONCLUSIONS Three candidate genes were identified as potentially responsible for the observed niche segregation concerning nitrite concentration, habitat temperature and water conductivity. Additionally, signs of positive selection in the hydrogen sulfide detoxification pathway were detected, providing a new plausible hypothesis for the species' ecological differentiation. Finally, a divergently selected, nuclear encoded mitochondrial ribosomal protein may contribute to reproductive isolation due to cytonuclear coevolution.	en_GB
dc.description.sponsorship	DFG, Open Access-Publizieren Universität Mainz / Universitätsmedizin	de
dc.language.iso	eng	de
dc.rights	CC BY	*
dc.rights.uri	https://creativecommons.org/licenses/by/2.0/	*
dc.subject.ddc	570 Biowissenschaften	de_DE
dc.subject.ddc	570 Life sciences	en_GB
dc.title	Genomic basis of ecological niche divergence among cryptic sister species of non-biting midges	en_GB
dc.type	Zeitschriftenaufsatz	de
dc.identifier.doi	http://doi.org/10.25358/openscience-7974	-
jgu.type.dinitype	article	en_GB
jgu.type.version	Published version	de
jgu.type.resource	Text	de
jgu.organisation.department	FB 10 Biologie	de
jgu.organisation.number	7970	-
jgu.organisation.name	Johannes Gutenberg-Universität Mainz	-
jgu.rights.accessrights	openAccess	-
jgu.journal.title	BMC genomics	de
jgu.journal.volume	14	de
jgu.pages.alternative	Art. 384	de
jgu.publisher.year	2013	-
jgu.publisher.name	BioMed Central	de
jgu.publisher.place	London	de
jgu.publisher.uri	http://dx.doi.org/10.1186/1471-2164-14-384	de
jgu.publisher.issn	1471-2164	de
jgu.organisation.place	Mainz	-
jgu.subject.ddccode	570	de
opus.date.modified	2018-08-02T09:30:01Z	-
opus.subject.dfgcode	00-000	-
opus.organisation.string	FB 10: Biologie: Institut für Zoologie	de_DE
opus.organisation.string	FB 10: Biologie: Institut für Molekulargenetik, Gentechnologische Sicherheitsforschung und Beratung	de_DE
opus.identifier.opusid	23211	-
opus.institute.number	1003	-
opus.institute.number	1006	-
opus.metadataonly	false	-
opus.type.contenttype	Forschungsbericht	de_DE
opus.type.contenttype	Research Report	en_EN
opus.affiliated	Feldmeyer, Barbara	-
opus.affiliated	Hankeln, Thomas	-
jgu.publisher.doi	10.1186/1471-2164-14-384	de
jgu.organisation.ror	https://ror.org/023b0x485	-
Appears in collections:	DFG-OA-Publizieren (2012 - 2017)

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