Microsatellite paternity analysis on captive Lake Malawi cichlids supports reproductive isolation by direct mate choice

1998 ◽  
Vol 7 (11) ◽  
pp. 1605-1610 ◽  
Author(s):  
M. E. KNIGHT ◽  
G. F. TURNER ◽  
C. RICO ◽  
M. J. H. VAN OPPEN ◽  
G. M. HEWITT
Keyword(s):  
Mate Choice ◽  
Reproductive Isolation ◽  
Lake Malawi ◽  
Paternity Analysis

scholarly journals Segregation of Species-Specific Male Attractiveness in F2 Hybrid Lake Malawi Cichlid Fish

2011 ◽  
Vol 2011 ◽  
pp. 1-7 ◽  
Author(s):  
Ola Svensson ◽  
Bernd Egger ◽  
Boye Gricar ◽  
Katie Woodhouse ◽  
Cock van Oosterhout ◽  
...  
Keyword(s):  
Mate Choice ◽  
Reproductive Isolation ◽  
Genetic Model ◽  
Cichlid Fish ◽  
Lake Malawi ◽  
Paternity Analysis ◽  
Colour Pattern ◽  
Male Mating ◽  
Heritable Variation ◽  
Species Specific

Among the huge radiations of haplochromine cichlid fish in Lakes Malawi and Victoria, closely related species are often reproductively isolated via female mate choice although viable fertile hybrids can be produced when females are confined only with heterospecific males. We generated F2 hybrid males from a cross between a pair of closely related sympatric cichlid fish from Lake Malawi. Laboratory mate choice experiments using microsatellite paternity analysis demonstrated that F2 hybrid males differed significantly in their attractiveness to females of the two parental species, indicating heritable variation in traits involved in mate choice that may contribute to reproductive isolation between these species. We found no significant correlation between male mating success and any measurement of male colour pattern. A simple quantitative genetic model of reproductive isolation suggests that there may be as few as two chromosomal regions controlling species-specific attractiveness. We propose that adaptive radiation of Lake Malawi cichlids could be facilitated by the presence of genes with major effects on mate choice and reproductive isolation.

scholarly journals Female and male visually based mate preferences are consistent with reproductive isolation between populations of the Lake Malawi endemic Labeotropheus fuelleborni

2010 ◽  
Vol 56 (1) ◽  
pp. 65-72 ◽  
Author(s):  
Michael J. Pauers ◽  
Timothy J. Ehlinger ◽  
Jeffrey S. McKinnon
Keyword(s):  
Mate Choice ◽  
Reproductive Isolation ◽  
Courtship Behavior ◽  
Dominant Role ◽  
Female Mate Choice ◽  
Lake Malawi ◽  
Mate Preferences ◽  
Visual Signals ◽  
Male Mating ◽  
Haplochromine Cichlids

Abstract Sexual selection via female mate choice is thought to have played a key role in the speciation of haplochromine cichlids, but a dominant role for visual signals in such processes has lately been called into question. In addition, the possible role of male mating preferences in haplochromine speciation has been little studied. We studied patterns of both female and male mate choice, based exclusively on visual signals, in order to evaluate potential reproductive isolation between two populations of the Lake Malawi haplochromine Labeotropheus fuelleborni. In the first experiment, females were allowed to choose between two males, one from the same population and the other allopatric with respect to the female. Females in this experiment responded more frequently to males from their own population. Similarly, the males in these trials displayed more frequently when presented with females of their own population. In the second experiment, a female was allowed to choose between two males, either both from her own population or both allopatric. In these trials, both males and females from the Katale population interacted significantly more frequently in settings in which all three individuals were from the same population (“same-population trios”), and those from the Chipoka population showed a similar trend. Thus, patterns in both male and female courtship behavior suggest that visual signals contribute to at least incipient reproductive isolation between populations of L. fuelleborni.

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’.

scholarly journals Male mate choice via cuticular hydrocarbon pheromones drives reproductive isolation between Drosophila species

Evolution ◽  
2017 ◽  
Vol 72 (1) ◽  
pp. 123-135 ◽  
Author(s):  
Michael P. Shahandeh ◽  
Alison Pischedda ◽  
Thomas L. Turner
Keyword(s):  
Mate Choice ◽  
Reproductive Isolation ◽  
Cuticular Hydrocarbon ◽  
Drosophila Species ◽  
Male Mate Choice ◽  
Male Mate

scholarly journals Coevolution of male and female mate choice can destabilize reproductive isolation

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Thomas G. Aubier ◽  
Hanna Kokko ◽  
Mathieu Joron
Keyword(s):  
Mate Choice ◽  
Reproductive Isolation ◽  
Female Mate Choice ◽  
Male Mate Choice ◽  
Premating Isolation ◽  
Male And Female ◽  
Female Mate ◽  
Female Preferences ◽  
Mutual Mate Choice ◽  
Male Mate

Abstract Sexual interactions play an important role in the evolution of reproductive isolation, with important consequences for speciation. Theoretical studies have focused on the evolution of mate preferences in each sex separately. However, mounting empirical evidence suggests that premating isolation often involves mutual mate choice. Here, using a population genetic model, we investigate how female and male mate choice coevolve under a phenotype matching rule and how this affects reproductive isolation. We show that the evolution of female preferences increases the mating success of males with reciprocal preferences, favouring mutual mate choice. However, the evolution of male preferences weakens indirect selection on female preferences and, with weak genetic drift, the coevolution of female and male mate choice leads to periodic episodes of random mating with increased hybridization (deterministic ‘preference cycling’ triggered by stochasticity). Thus, counterintuitively, the process of establishing premating isolation proves rather fragile if both male and female mate choice contribute to assortative mating.

scholarly journals Contact-Chemosensory Evolution Underlying Reproductive Isolation in Drosophila Species

2020 ◽  
Vol 14 ◽  
Author(s):  
Kosei Sato ◽  
Daisuke Yamamoto
Keyword(s):  
Decision Making ◽  
Mate Choice ◽  
Reproductive Isolation ◽  
Sibling Species ◽  
Related Species ◽  
Main Theme ◽  
Biological Factors ◽  
Premating Isolation ◽  
Closely Related Species ◽  
Neural Activities

The main theme of the review is how changes in pheromone biochemistry and the sensory circuits underlying pheromone detection contribute to mate choice and reproductive isolation. The review focuses primarily on gustatory and non-volatile signals in Drosophila. Premating isolation is prevalent among closely related species. In Drosophila, preference for conspecifics against other species in mate choice underlies premating isolation, and such preference relies on contact chemosensory communications between a female and male along with other biological factors. For example, although D. simulans and D. melanogaster are sibling species that yield hybrids, their premating isolation is maintained primarily by the contrasting effects of 7,11-heptacosadiene (7,11-HD), a predominant female pheromone in D. melanogaster, on males of the two species: it attracts D. melanogaster males and repels D. simulans males. The contrasting preference for 7,11-HD in males of these two species is mainly ascribed to opposite effects of 7,11-HD on neural activities in the courtship decision-making neurons in the male brain: 7,11-HD provokes both excitatory and inhibitory inputs in these neurons and differences in the balance between the two counteracting inputs result in the contrasting preference for 7,11-HD, i.e., attraction in D. melanogaster and repulsion in D. simulans. Introduction of two double bonds is a key step in 7,11-HD biosynthesis and is mediated by the desaturase desatF, which is active in D. melanogaster females but transcriptionally inactivated in D. simulans females. Thus, 7,11-HD biosynthesis diversified in females and 7,11-HD perception diversified in males, yet it remains elusive how concordance of the changes in the two sexes was attained in evolution.

scholarly journals Sexual selection on color and behavior within and between cichlid populations: Implications for speciation

2012 ◽  
Vol 58 (3) ◽  
pp. 475-483 ◽  
Author(s):  
Michael J. Pauers ◽  
Jeffrey S. Mckinnon
Keyword(s):  
Sexual Selection ◽  
Mate Choice ◽  
Reproductive Isolation ◽  
Assortative Mating ◽  
Mate Preferences ◽  
Separate Experiment ◽  
Color Patterns ◽  
Male Behavior ◽  
Female Population ◽  
Different Color

Abstract Sexual selection is widely viewed as playing a central role in haplochromine cichlid speciation. Hypothetically, once divergent mate preferences evolve among populations of these fishes, reproductive isolation follows and the populations begin to behave as different species. Various studies have examined patterns of assortative mating among species and sometimes populations, but few have examined variation in directional preferences, especially among populations of the same species. We investigated mate choice behavior in two populations of Labeotropheus fuelleborni, a Lake Malawi endemic. We test whether mating preferences between populations are based on the same traits and in the same direction as preferences within populations. We examine the potential contributions of two classes of trait, color patterns and behaviors, to reproductive isolation. When females chose between either two males of their own population, or two from another, female preferences were generally similar (for the female population) across the two contexts. Mate choice patterns differed between (female) populations for a measure of color, but only modestly for male behavior. In a separate experiment we simultaneously offered females a male of their own population and a male from a different population. In these trials, females consistently preferred males from their own population, which were also the males that displayed more frequently than their opponents, but not necessarily those with color traits suggested to be most attractive in the previous experiment. Thus directional preferences for chroma and related aspects of color may be important when females are presented with males of otherwise similar phenotypes, but may play little role in mediating assortative mating among populations with substantially different color patterns. A preference for male behavior could play some role in speciation if males preferentially court same-population females, as we have observed for the populations studied herein.

scholarly journals Coevolution of male and female mate choice can destabilize reproductive isolation

2018 ◽  
Author(s):  
Thomas G. Aubier ◽  
Hanna Kokko ◽  
Mathieu Joron
Keyword(s):  
Mate Choice ◽  
Reproductive Isolation ◽  
Female Mate Choice ◽  
Male Mate Choice ◽  
Premating Isolation ◽  
Male And Female ◽  
Female Mate ◽  
Female Preferences ◽  
Mutual Mate Choice ◽  
Male Mate

AbstractSexual interactions play an important role in the evolution of reproductive isolation, with important consequences for speciation. Theoretical studies have focused on the evolution of mate preferences in each sex separately. However, mounting empirical evidence suggests that premating isolation often involves mutual mate choice. Here, using a population genetic model, we investigate how female and male mate choice coevolve under a phenotype matching rule and how this affects reproductive isolation. We show that the evolution of female preferences increases the mating success of males with reciprocal preferences, favouring mutual mate choice. However, the evolution of male preferences weakens indirect selection on female preferences and, with weak genetic drift, the coevolution of female and male mate choice leads to periodic episodes of random mating with increased hybridization (deterministic ‘preference cycling’ triggered by stochasticity). Thus, counterintuitively, the process of establishing premating isolation proves rather fragile if both male and female mate choice contribute to assortative mating.

scholarly journals Divergent Evolution of Male Aggressive Behaviour: Another Reproductive Isolation Barrier in Extremophile Poeciliid Fishes?

2012 ◽  
Vol 2012 ◽  
pp. 1-14 ◽  
Author(s):  
David Bierbach ◽  
Moritz Klein ◽  
Vanessa Sassmannshausen ◽  
Ingo Schlupp ◽  
Rüdiger Riesch ◽  
...  
Keyword(s):  
Sexual Selection ◽  
Mate Choice ◽  
Reproductive Isolation ◽  
Hydrogen Sulphide ◽  
Environmental Conditions ◽  
Aggressive Behaviour ◽  
Female Mate Choice ◽  
Divergent Evolution ◽  
Poecilia Mexicana ◽  
Spring Area

Reproductive isolation among locally adapted populations may arise when immigrants from foreign habitats are selected against via natural or (inter-)sexual selection (female mate choice). We asked whether also intrasexual selection through male-male competition could promote reproductive isolation among populations of poeciliid fishes that are locally adapted to extreme environmental conditions [i.e., darkness in caves and/or toxic hydrogen sulphide (H2S)]. We found strongly reduced aggressiveness in extremophile Poecilia mexicana, and darkness was the best predictor for the evolutionary reduction of aggressiveness, especially when combined with presence of H2S. We demonstrate that reduced aggression directly translates into migrant males being inferior when paired with males from nonsulphidic surface habitats. By contrast, the phylogenetically old sulphur-endemic P. sulphuraria from another sulphide spring area showed no overall reduced aggressiveness, possibly indicating evolved mechanisms to better cope with H2S.

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