scholarly journals Extensive historical and contemporary hybridization suggests premating isolation in Vermivora warblers is not strong: A reply to Confer et al.

2021 ◽  
Author(s):  
David P. L. Toews ◽  
Marcella D. Baiz ◽  
Gunnar R. Kramer ◽  
Irby J. Lovette ◽  
Henry M. Streby ◽  
...  
Keyword(s):  
Premating Isolation

scholarly journals Does Larval Rearing Diet Lead to Premating Isolation in Spodoptera litura (Fabricius) (Lepidoptera: Noctuidae)?

Insects ◽  
2021 ◽  
Vol 12 (3) ◽  
pp. 203
Author(s):  
Xue-Yuan Di ◽  
Bin Yan ◽  
Cheng-Xu Wu ◽  
Xiao-Fei Yu ◽  
Jian-Feng Liu ◽  
...  
Keyword(s):  
Mate Choice ◽  
Spodoptera Litura ◽  
Artificial Diet ◽  
Survival Rates ◽  
Intrinsic Rate Of Increase ◽  
Larval Rearing ◽  
Population Parameters ◽  
Premating Isolation ◽  
Behavioral Isolation ◽  
Rate Of Increase

Host plant preference during the larval stage may help shape not only phenotypic plasticity but also behavioral isolation. We assessed the effects of diet on population parameters and mate choice in Spodoptera litura. We raised larvae fed on tobacco, Chinese cabbage, or an artificial diet, and we observed the shortest developmental time and highest fecundity in individuals fed the artificial diet. However, survival rates were higher for larvae on either of the natural diets. Population parameters including intrinsic rate of increase and finite rate of increase were significantly higher with the artificial diet, but this diet led to a lower mean generation time. Copulation duration, copulation time, and number of eggs reared significantly differed between diets. In terms of mate choice, females on the artificial diet rarely mated with males fed on a natural host. Our results support the hypothesis that different diets may promote behavioral isolation, affecting mating outcomes. Thus, findings for populations fed an artificial diet may not reflect findings for populations in the field.

Lack of Premating Isolation at the Base of a Phylogenetic Tree

2002 ◽  
Vol 160 (1) ◽  
pp. 1-19 ◽  
Author(s):  
B. Rosemary Grant ◽  
Peter R. Grant
Keyword(s):  
Phylogenetic Tree ◽  
Premating Isolation

scholarly journals Role of sexual imprinting in assortative mating and premating isolation in Darwin’s finches

2018 ◽  
Vol 115 (46) ◽  
pp. E10879-E10887 ◽  
Author(s):  
Peter R. Grant ◽  
B. Rosemary Grant
Keyword(s):  
Natural Habitat ◽  
Good Choice ◽  
Premating Isolation ◽  
Sexual Imprinting ◽  
Darwin's Finches ◽  
Darwin’S Finches ◽  
Adaptive Radiations ◽  
Beak Size ◽  
Species Specific

Global biodiversity is being degraded at an unprecedented rate, so it is important to preserve the potential for future speciation. Providing for the future requires understanding speciation as a contemporary ecological process. Phylogenetically young adaptive radiations are a good choice for detailed study because diversification is ongoing. A key question is how incipient species become reproductively isolated from each other. Barriers to gene exchange have been investigated experimentally in the laboratory and in the field, but little information exists from the quantitative study of mating patterns in nature. Although the degree to which genetic variation underlying mate-preference learning is unknown, we provide evidence that two species of Darwin’s finches imprint on morphological cues of their parents and mate assortatively. Statistical evidence of presumed imprinting is stronger for sons than for daughters and is stronger for imprinting on fathers than on mothers. In combination, morphology and species-specific song learned from the father constitute a barrier to interbreeding. The barrier becomes stronger the more the species diverge morphologically and ecologically. It occasionally breaks down, and the species hybridize. Hybridization is most likely to happen when species are similar to each other in adaptive morphological traits, e.g., body size and beak size and shape. Hybridization can lead to the formation of a new species reproductively isolated from the parental species as a result of sexual imprinting. Conservation of sufficiently diverse natural habitat is needed to sustain a large sample of extant biota and preserve the potential for future speciation.

scholarly journals Cuticular Hydrocarbon Content that Affects Male Mate Preference of Drosophila melanogaster from West Africa

2012 ◽  
Vol 2012 ◽  
pp. 1-10 ◽  
Author(s):  
Aya Takahashi ◽  
Nao Fujiwara-Tsujii ◽  
Ryohei Yamaoka ◽  
Masanobu Itoh ◽  
Mamiko Ozaki ◽  
...  
Keyword(s):  
Drosophila Melanogaster ◽  
Low Frequency ◽  
Cuticular Hydrocarbon ◽  
Inhibitory Effect ◽  
Incipient Speciation ◽  
Transfer Experiment ◽  
Premating Isolation ◽  
Potential Factor ◽  
Male Mate ◽  
Different Strains

Intraspecific variation in mating signals and preferences can be a potential source of incipient speciation. Variable crossability between Drosophila melanogaster and D. simulans among different strains suggested the abundance of such variations. A particular focus on one combination of D. melanogaster strains, TW1(G23) and Mel6(G59), that showed different crossabilities to D. simulans, revealed that the mating between females from the former and males from the latter occurs at low frequency. The cuticular hydrocarbon transfer experiment indicated that cuticular hydrocarbons of TW1 females have an inhibitory effect on courtship by Mel6 males. A candidate component, a C25 diene, was inferred from the gas chromatography analyses. The intensity of male refusal of TW1 females was variable among different strains of D. melanogaster, which suggested the presence of variation in sensitivity to different chemicals on the cuticle. Such variation could be a potential factor for the establishment of premating isolation under some conditions.

scholarly journals Weak premating isolation between two parapatric brocket deer species

2017 ◽  
Vol 87 ◽  
pp. 17-26 ◽  
Author(s):  
Juan Carranza ◽  
Mar Roldán ◽  
Ellen de Fátima Carvalho Peroni ◽  
José Maurício Barbanti Duarte
Keyword(s):  
Premating Isolation ◽  
Deer Species ◽  
Brocket Deer

AN EXPERIMENTAL EVALUATION OF PREMATING ISOLATION IN THE HYLA EWINGI COMPLEX (ANURA : HYLIDAE)

Evolution ◽  
1968 ◽  
Vol 22 (4) ◽  
pp. 659-663 ◽  
Author(s):  
M. J. Littlejohn ◽  
J. J. Loftus-Hills
Keyword(s):  
Experimental Evaluation ◽  
Premating Isolation

Weak premating isolation betweenClitarchusstick insect species despite divergent male and female genital morphology

2019 ◽  
Vol 32 (5) ◽  
pp. 398-411 ◽  
Author(s):  
Shelley S. Langton‐Myers ◽  
Gregory I. Holwell ◽  
Thomas R. Buckley
Keyword(s):  
Insect Species ◽  
Genital Morphology ◽  
Premating Isolation ◽  
Male And Female ◽  
Female Genital

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.

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