Reproductive character displacement of female mate preferences for male cuticular hydrocarbons inDrosophila subquinaria

Evolution ◽  
2015 ◽  
Vol 69 (10) ◽  
pp. 2625-2637 ◽  
Author(s):  
Howard D. Rundle ◽  
Kelly A. Dyer
Keyword(s):  
Cuticular Hydrocarbons ◽  
Character Displacement ◽  
Mate Preferences ◽  
Reproductive Character Displacement ◽  
Female Mate ◽  
Reproductive Character

scholarly journals Asymmetric reproductive character displacement in male aggregation behaviour

2010 ◽  
Vol 278 (1716) ◽  
pp. 2348-2354 ◽  
Author(s):  
Karin S. Pfennig ◽  
Alyssa B. Stewart
Keyword(s):  
Mating Behaviour ◽  
Character Displacement ◽  
Mate Preferences ◽  
Reproductive Character Displacement ◽  
Spadefoot Toad ◽  
Reproductive Character ◽  
Aggregation Behaviour ◽  
Spea Bombifrons ◽  
Reproductive Activities ◽  
Aggregative Behaviour

Reproductive character displacement—the evolution of traits that minimize reproductive interactions between species—can promote striking divergence in male signals or female mate preferences between populations that do and do not occur with heterospecifics. However, reproductive character displacement can affect other aspects of mating behaviour. Indeed, avoidance of heterospecific interactions might contribute to spatial (or temporal) aggregation of conspecifics. We examined this possibility in two species of hybridizing spadefoot toad (genus Spea ). We found that in Spea bombifrons sympatric males were more likely than allopatric males to associate with calling males. Moreover, contrary to allopatric males, sympatric S. bombifrons males preferentially associated with conspecific male calls. By contrast, Spea multiplicata showed no differences between sympatry and allopatry in likelihood to associate with calling males. Further, sympatric and allopatric males did not differ in preference for conspecifics. However, allopatric S. multiplicata were more variable than sympatric males in their responses. Thus, in S. multiplicata , character displacement may have refined pre-existing aggregation behaviour. Our results suggest that heterospecific interactions can foster aggregative behaviour that might ultimately contribute to clustering of conspecifics. Such clustering can generate spatial or temporal segregation of reproductive activities among species and ultimately promote reproductive isolation.

scholarly journals Reinforcement generates reproductive isolation between neighbouring conspecific populations of spadefoot toads

2014 ◽  
Vol 281 (1789) ◽  
pp. 20140949 ◽  
Author(s):  
Karin S. Pfennig ◽  
Amber M. Rice
Keyword(s):  
Gene Flow ◽  
Reproductive Isolation ◽  
Character Displacement ◽  
Mate Preferences ◽  
Reproductive Character Displacement ◽  
Pure Species ◽  
Interacting Species ◽  
Spadefoot Toads ◽  
Reproductive Character ◽  
Species Population

Reproductive character displacement is the adaptive evolution of traits that minimize deleterious reproductive interactions between species. When arising from selection to avoid hybridization, this process is referred to as reinforcement. Reproductive character displacement generates divergence not only between interacting species, but also between conspecific populations that are sympatric with heterospecifics versus those that are allopatric. Consequently, such conspecific populations can become reproductively isolated. We compared female mate preferences in, and evaluated gene flow between, neighbouring populations of spadefoot toads that did and did not occur with heterospecifics (mixed- and pure-species populations, respectively). We found that in mixed-species populations females significantly preferred conspecifics. Such females also tended to prefer a conspecific call character that was dissimilar from heterospecifics. By contrast, females from pure-species populations did not discriminate conspecific from heterospecific calls. They also preferred a more exaggerated conspecific call character that resembles heterospecific males. Moreover, gene flow was significantly reduced between mixed- and pure-species population types. Thus, character displacement (and, more specifically, reinforcement) may initiate reproductive isolation between conspecific populations that differ in interactions with heterospecifics.

Asymmetric acoustic signal recognition led to asymmetric gene flow between two parapatric frogs

2020 ◽  
Author(s):  
Yu-Wei Hsiao ◽  
Hui-Yun Tseng ◽  
Hung Ngoc Nguyen ◽  
Si-Min Lin
Keyword(s):  
Gene Flow ◽  
Contact Region ◽  
Character Displacement ◽  
Secondary Contact ◽  
Genetic Introgression ◽  
Genetic Integrity ◽  
Signal Recognition ◽  
Reproductive Character Displacement ◽  
Reproductive Character ◽  
Behavioural Experiments

Abstract Correct discrimination between courtship signals could help to maintain genetic integrity between closely related species. However, asymmetric usage of signals might cause asymmetric gene flow across the contact zone. Buergeria choui and B. otai are sibling-species with a parapatric distribution pattern in Taiwan, having two narrow contact zones on the east and west sides of the island. Combining behavioural experiments with genome-wide RAD-seq analyses, we test whether the ability of signal recognition influences genetic introgression across their species boundary. The playback experiments show that all B. choui populations respond strongest to their own ‘cricket’ trills, while the western population of B. otai have evolved a strong level of reproductive character displacement by showing the inclusive usage of the unique ‘chicken’ signals. In contrast, the eastern B. otai population uses both ‘chicken’ and ‘cricket’ trills, and has a stronger preference for the latter. The weak reproductive character displacement in the eastern population has led to asymmetry genetic introgression from B. choui toward B. otai. Our results support the prediction that a more specialized signal-user, compared to its sibling, generalized signal-user, might have a higher probability of maintaining their genetic integrity in the secondary contact region.

scholarly journals Phylo-comparative analyses reveal the dual role of drift and selection in reproductive character displacement

2019 ◽  
Vol 140 ◽  
pp. 106597
Author(s):  
İsmail K. Sağlam ◽  
Michael R. Miller ◽  
Sean O'Rourke ◽  
Selim S. Çağlar
Keyword(s):  
Character Displacement ◽  
Dual Role ◽  
Reproductive Character Displacement ◽  
Comparative Analyses ◽  
Reproductive Character

scholarly journals Reproductive character displacement generates reproductive isolation among conspecific populations: an artificial neural network study

2006 ◽  
Vol 273 (1592) ◽  
pp. 1361-1368 ◽  
Author(s):  
Karin S Pfennig ◽  
Michael J Ryan
Keyword(s):  
Neural Network ◽  
Neural Networks ◽  
Artificial Neural Network ◽  
Artificial Neural Networks ◽  
Reproductive Isolation ◽  
Mate Recognition ◽  
Character Displacement ◽  
Reproductive Character Displacement ◽  
Reproductive Character ◽  
Artificial Neural

When interactions with heterospecifics prevent females from identifying conspecific mates, natural selection can promote the evolution of mating behaviours that minimize such interactions. Consequently, mating behaviours may diverge among conspecific populations in sympatry and in allopatry with heterospecifics. This divergence in conspecific mating behaviours—reproductive character displacement—can initiate speciation if mating behaviours become so divergent as to generate reproductive isolation between sympatric and allopatric conspecifics. We tested these ideas by using artificial neural networks to simulate the evolution of conspecific mate recognition in populations sympatric and allopatric with different heterospecifics. We found that advertisement calls diverged among the different conspecific populations. Consequently, networks strongly preferred calls from their own population to those from foreign conspecific populations. Thus, reproductive character displacement may promote reproductive isolation and, ultimately, speciation among conspecific populations.

Sign in / Sign up

Export Citation Format

Share Document