Sequential mate choice and sexual isolation in threespine stickleback species

2012 ◽  
Vol 26 (1) ◽  
pp. 130-140 ◽  
Author(s):  
G. M. Kozak ◽  
M. L. Head ◽  
A. C. R. Lackey ◽  
J. W. Boughman
Keyword(s):  
Mate Choice ◽  
Sexual Isolation ◽  
Threespine Stickleback ◽  
Sequential Mate Choice

scholarly journals The role of copy-number variation in the reinforcement of sexual isolation between the two European subspecies of the house mouse

2020 ◽  
Vol 375 (1806) ◽  
pp. 20190540 ◽  
Author(s):  
Henry L. North ◽  
Pierre Caminade ◽  
Dany Severac ◽  
Khalid Belkhir ◽  
Carole M. Smadja
Keyword(s):  
Mate Choice ◽  
Copy Number Variation ◽  
Reproductive Isolation ◽  
House Mouse ◽  
Copy Number ◽  
Structural Changes ◽  
Sexual Isolation ◽  
Number Variation ◽  
Tandem Duplications

Reinforcement has the potential to generate strong reproductive isolation through the evolution of barrier traits as a response to selection against maladaptive hybridization, but the genetic changes associated with this process remain largely unexplored. Building upon the increasing evidence for a role of structural variants in adaptation and speciation, we addressed the role of copy-number variation in the reinforcement of sexual isolation evidenced between the two European subspecies of the house mouse. We characterized copy-number divergence between populations of Mus musculus musculus that display assortative mate choice, and those that do not, using whole-genome resequencing data. Updating methods to detect deletions and tandem duplications (collectively: copy-number variants, CNVs) in Pool-Seq data, we developed an analytical pipeline dedicated to identifying genomic regions showing the expected pattern of copy-number displacement under a reinforcement scenario. This strategy allowed us to detect 1824 deletions and seven tandem duplications that showed extreme differences in frequency between behavioural classes across replicate comparisons. A subset of 480 deletions and four tandem duplications were specifically associated with the derived trait of assortative mate choice. These ‘Choosiness-associated’ CNVs occur in hundreds of genes. Consistent with our hypothesis, such genes included olfactory receptors potentially involved in the olfactory-based assortative mate choice in this system as well as one gene, Sp110 , that is known to show patterns of differential expression between behavioural classes in an organ used in mate choice—the vomeronasal organ. These results demonstrate that fine-scale structural changes are common and highly variable within species, despite being under-studied, and may be important targets of reinforcing selection in this system and others. This article is part of the theme issue ‘Towards the completion of speciation: the evolution of reproductive isolation beyond the first barriers’.

Male fiddler crabs prefer conspecific females during simultaneous, but not sequential, mate choice

2011 ◽  
Vol 81 (4) ◽  
pp. 775-778 ◽  
Author(s):  
Isobel Booksmythe ◽  
Michael D. Jennions ◽  
Patricia R.Y. Backwell
Keyword(s):  
Mate Choice ◽  
Fiddler Crabs ◽  
Sequential Mate Choice

Density-dependent plasticity of sequential mate choice in a bushcricket (Orthoptera:Tettigoniidae)

2007 ◽  
Vol 55 (2) ◽  
pp. 123 ◽  
Author(s):  
Gerlind U. C. Lehmann
Keyword(s):  
Population Density ◽  
Mate Choice ◽  
High Density ◽  
High Population Density ◽  
Mating Period ◽  
Search Behaviour ◽  
Accessory Glands ◽  
Sequential Mate Choice ◽  
Mate Sampling ◽  
Copulation Attempt

Mate choice is a common phenomenon in animals and several factors have been proposed as being involved in the acceptance or rejection of a partner. I investigated the effect of population density on the mate-sampling behaviour of female Xederra charactus (bushcrickets). In my study, female bushcrickets adjusted the tactic of sequential mate sampling in response to mate density, visiting a series of up to five different males per night. Under low-density conditions, females visited fewer males in a night and were less likely to reject a copulation attempt than females under high-density conditions. Rejection of a male occurred during 29% of copulations in areas of high population density, but during only 8% in areas of low population density. Moreover, at low densities, females were less likely to reject mates later in the night, which can be interpreted as a reaction to the time constraints of a finite nightly mating period. Females in high-density populations also more often chose males with a higher mass of the spermatophore-producing accessory glands. Due to such choice, females might receive a larger nuptial gift at mating. These results are consistent with tactical models of search behaviour in which females adjust their behaviour to the number of potential mates and the length of the mating period.

scholarly journals Sexual isolation with and without ecological isolation in marine isopods J. albifrons and J. praehirsuta

2018 ◽  
Author(s):  
Ambre Ribardière ◽  
Elsa Pabion ◽  
Jérôme Coudret ◽  
Claire Daguin-Thiébaut ◽  
Céline Houbin ◽  
...  
Keyword(s):  
Gene Flow ◽  
Mate Choice ◽  
Free Choice ◽  
First Generation ◽  
Sexual Isolation ◽  
Relative Strength ◽  
Experimental Population ◽  
Species Pair ◽  
Ecological Isolation

AbstractSexual barriers associated with mate choice are nearly always found to be associated with some level of ecological isolation between species. The independence and relative strength of sexual isolation are thus difficult to assess. Here we take advantage of a pair of isopod species (Jaera albifrons and J. praehirsuta) that show sexual isolation and coexist in populations where they share the same microhabitat or not (i.e. without or with ecological isolation). Using no-choice trials and a free-choice experimental population, we estimated the strength of sexual isolation between J. albifrons and J. praehirsuta individuals originating from these different ecological contexts. We found that sexual isolation is strong in presence and absence of ecological isolation, but that it is asymmetric and fails to prevent gene flow entirely. First-generation post-zygotic barriers were low, and there was no sexual isolation within J. praehirsuta across habitats. The J. albifrons / J. praehirsuta species pair thus provides an example where the role of sexual isolation as a barrier to gene flow i) does not depend upon current ecological isolation, ii) seems to have evolved independently of local ecological conditions, but iii) is insufficient to complete speciation entirely on its own.

Adaptive Search and Information Updating in Sequential Mate Choice

1996 ◽  
Vol 148 (1) ◽  
pp. 123-137 ◽  
Author(s):  
V. Mazalov ◽  
N. Perrin ◽  
Y. Dombrovsky
Keyword(s):  
Mate Choice ◽  
Adaptive Search ◽  
Information Updating ◽  
Sequential Mate Choice
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