caa a22 4500 445845708 CHVBK 20180317145358.0 cr unu---uuuuu 170323e20110501xx s 000 0 eng 10.1007/s10709-010-9525-1 doi (NATIONALLICENCE)springer-10.1007/s10709-010-9525-1 Willett Christopher Department of Biology, University of North Carolina, CB#3280 Coker Hall, 27599-3280, Chapel Hill, NC, USA aut The nature of interactions that contribute to postzygotic reproductive isolation in hybrid copepods [Elektronische Daten] [Christopher Willett] Deleterious interactions within the genome of hybrids can lower fitness and result in postzygotic reproductive isolation. Understanding the genetic basis of these deleterious interactions, known as Dobzhansky-Muller incompatibilities, is the subject of intense current study that seeks to elucidate the nature of these deleterious interactions. Hybrids from crosses of individuals from genetically divergent populations of the intertidal copepod Tigriopus californicus provide a useful model in which to study Dobzhansky-Muller incompatibilities. Studies of the basis of postzygotic reproductive isolation in this species have revealed a number of patterns. First, there is evidence for a breakdown in genomic coadaptation between mtDNA-encoded and nuclear-encoded proteins that can result in a reduction in hybrid fitness in some crosses. It appears from studies of the individual genes involved in these interactions that although this coadaptation could lead to asymmetries between crosses, patterns of genotypic viabilities are not often consistent with simple models of genomic coadaptation. Second, there is a large impact of environmental factors on these deleterious interactions suggesting that they are not strictly intrinsic in nature. Temperature in particular appears to play an important role in determining the nature of these interactions. Finally, deleterious interactions in these hybrid copepods appear to be complex in terms of the number of genetic factors that interact to lead to reductions in hybrid fitness. This complexity may stem from three or more factors that all interact to cause a single incompatibility or the same factor interacting with multiple other factors independently leading to multiple incompatibilities. Springer Science+Business Media B.V., 2010 Speciation nationallicence Hybrid breakdown nationallicence Dobzhansky-Muller incompatibilities nationallicence Tigriopus californicus nationallicence Genomic coadaptation nationallicence Genetica Springer Netherlands 139/5(2011-05-01), 575-588 0016-6707 139:5<575 2011 139 10709 https://doi.org/10.1007/s10709-010-9525-1 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10709-010-9525-1 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Willett Christopher Department of Biology, University of North Carolina, CB#3280 Coker Hall, 27599-3280, Chapel Hill, NC, USA aut NATIONALLICENCE 773 0- Genetica Springer Netherlands 139/5(2011-05-01), 575-588 0016-6707 139:5<575 2011 139 10709 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer