Intergenomic interactions between mitochondrial and Y-linked genes shape male mating patterns and fertility inDrosophila melanogaster

Evolution ◽  
2015 ◽  
Vol 69 (11) ◽  
pp. 2876-2890 ◽  
Author(s):  
Winston K.W. Yee ◽  
Björn Rogell ◽  
Bernardo Lemos ◽  
Damian K. Dowling
Keyword(s):  
Male Mating ◽  
Mating Patterns ◽  
Intergenomic Interactions

Mating patterns of Rana kukunoris from three populations along an altitudinal gradient on the Tibetan Plateau

2013 ◽  
Vol 63 (2) ◽  
pp. 131-138 ◽  
Author(s):  
Tong Lei Yu ◽  
Hong Jing Li ◽  
Xin Lu
Keyword(s):  
Tibetan Plateau ◽  
Assortative Mating ◽  
Breeding Season ◽  
Random Mating ◽  
Large Male ◽  
Operational Sex Ratio ◽  
Male Mating ◽  
The Tibetan Plateau ◽  
Mating Patterns ◽  
Mating Advantage

Large-male mating advantage and size-assortative mating are two different size-dependent mating patterns which deviate from random mating in frogs. These two pairing patterns may arise due to female choice, male-male competition, male choice, or a combination of these. Our study investigated the mating system of Rana kukunoris at three elevations on the Tibetan Plateau, southwestern China, throughout a breeding season. We compared body size between amplectant and non-amplectant males, and among amplectant pairs. For R. kukunoris, the results showed a large-male mating advantage at the two higher elevations and a size-assortative mating at the highest elevation. In addition to sexual selection, we found that the length of the breeding season, population density and operational sex ratio may influence mating patterns.

scholarly journals The evolution of optimal female mating rate changes the coevolutionary dynamics of female resistance and male persistence

2012 ◽  
Vol 367 (1600) ◽  
pp. 2339-2347 ◽  
Author(s):  
Erem Kazancıoğlu ◽  
Suzanne H. Alonzo
Keyword(s):  
Sexual Conflict ◽  
Mating Success ◽  
Male Mating ◽  
Theoretical Studies ◽  
Male Mating Success ◽  
Female Resistance ◽  
Previous Theory ◽  
Mating Rate ◽  
Mating Patterns ◽  
Female Mating

Mating decisions usually involve conflict of interests between sexes. Accordingly, males benefit from increased number of matings, whereas costs of mating favour a lower mating rate for females. The resulting sexual conflict underlies the coevolution of male traits that affect male mating success (‘persistence’) and female traits that affect female mating patterns (‘resistance’). Theoretical studies on the coevolutionary dynamics of male persistence and female resistance assumed that costs of mating and, consequently, the optimal female mating rate are evolutionarily constant. Costs of mating, however, are often caused by male ‘persistence’ traits that determine mating success. Here, we present a model where the magnitude of costs of mating depend on, and evolve with, male persistence. We find that allowing costs of mating to depend on male persistence results in qualitatively different coevolutionary dynamics. Specifically, we find that male traits such as penis spikes that harm females are not predicted to exhibit runaway selection with female resistance, in contrast to previous theory that predicts indefinite escalation. We argue that it is essential to determine when and to what extent costs of mating are caused by male persistence in order to understand and accurately predict coevolutionary dynamics of traits involved in mating decisions.

VARIATION IN LEKKING COSTS IN BLACKBUCK (ANTILOPE CERVICAPRA): RELATIONSHIP TO LEK-TERRITORY LOCATION AND FEMALE MATING PATTERNS

Behaviour ◽  
2000 ◽  
Vol 137 (5) ◽  
pp. 547-563 ◽  
Author(s):  
Kavita Isvaran ◽  
Yadavendradev Jhala
Keyword(s):  
Mating Success ◽  
Female Preference ◽  
Male Mating ◽  
Time Activity ◽  
Mating Patterns ◽  
Female Mating ◽  
Focal Animal ◽  
Male Phenotype ◽  
Antilope Cervicapra ◽  
Foraging Time

AbstractWe studied variation in lekking costs in an Indian antelope, the blackbuck Antilope cervicapra, in relation to female mating patterns. We tested the hypothesis that central males had a higher mating success and faced higher costs than peripheral males. We used continuous focal animal sampling to estimate time-activity budgets of individually identified central and peripheral lekking males and bachelor males. Scan sampling was used to estimate the time spent on the lek by central and peripheral males and to monitor female visits to the lek. We mapped lek-territories and monitored territory additions, territory turnover, and the location of matings. We found that central males faced higher costs than peripheral males. Central males foraged less, spent more time on the lek and tended to have higher fighting rates than peripheral males. Corresponding to this difference in costs, mating benefits were also greater for central males. Our results suggest that lek-territory location may be an important cue in female choice. Male mating success was skewed and 90% of matings observed occurred in the lek-centre. Furthermore, three of the five most successful males previously held territories in the lek-periphery where they were not observed to mate. Territory turnover was higher in the centre than in the periphery and males tended to move towards the centre while shifting territories. Based on these findings, we suggest that central and peripheral males follow two different strategies in response to a female preference for central territories: while central males may try to maximise encounters with oestrous females by investing heavily in lekking, peripheral males seem to attempt to maximise their chances of gaining central territories by not compromising on foraging time and investing less in lekking. Since we did not directly measure male phenotype, its role in explaining the patterns we found remains to be studied.

scholarly journals Turtle mating patterns buffer against disruptive effects of climate change

2012 ◽  
Vol 279 (1736) ◽  
pp. 2122-2127 ◽  
Author(s):  
Lucy I. Wright ◽  
Kimberley L. Stokes ◽  
Wayne J. Fuller ◽  
Brendan J. Godley ◽  
Andrew McGowan ◽  
...  
Keyword(s):  
Climate Change ◽  
Sex Ratio ◽  
Sex Ratios ◽  
Chelonia Mydas ◽  
Marine Turtle ◽  
Male Mating ◽  
Offspring Sex Ratio ◽  
Mating Patterns ◽  
Offspring Sex ◽  
The Impact

For organisms with temperature-dependent sex determination (TSD), skewed offspring sex ratios are common. However, climate warming poses the unique threat of producing extreme sex ratio biases that could ultimately lead to population extinctions. In marine turtles, highly female-skewed hatchling sex ratios already occur and predicted increases in global temperatures are expected to exacerbate this trend, unless species can adapt. However, it is not known whether offspring sex ratios persist into adulthood, or whether variation in male mating success intensifies the impact of a shortage of males on effective population size. Here, we use parentage analysis to show that in a rookery of the endangered green turtle ( Chelonia mydas ), despite an offspring sex ratio of 95 per cent females, there were at least 1.4 reproductive males to every breeding female. Our results suggest that male reproductive intervals may be shorter than the 2–4 years typical for females, and/or that males move between aggregations of receptive females, an inference supported by our satellite tracking, which shows that male turtles may visit multiple rookeries. We suggest that male mating patterns have the potential to buffer the disruptive effects of climate change on marine turtle populations, many of which are already seriously threatened.

Review of Human Mating Patterns.

1991 ◽  
Vol 36 (4) ◽  
pp. 346-346
Author(s):  
David M. Buss
Keyword(s):  
Mating Patterns ◽  
Human Mating

The Effects of the sphragis on male and female genitalia in Acraea (Nymphalidae) butterflies

2020 ◽  
Vol 22 ◽  
Author(s):  
Shannon L Summers ◽  
Akito Y Kawahara ◽  
Ana P. S. Carvalho
Keyword(s):  
Interspecific Variation ◽  
Sperm Storage ◽  
Male Mating ◽  
Museum Collections ◽  
Storage Organ ◽  
Mating Plug ◽  
Males And Females ◽  
Comparison And Analysis ◽  
Imagej Software ◽  
Sexually Antagonistic Coevolution

Male mating plugs have been used in many species to prevent female re-mating and sperm competition. One of the most extreme examples of a mating plug is the sphragis, which is a large, complex and externalized plug found only in butterflies. This structure is found in many species in the genus Acraea (Nymphalidae) and provides an opportunity for investigation of the effects of the sphragis on the morphology of the genitalia, which is poorly understood. This study aims to understand morphological interspecific variation in the genitalia of Acraea butterflies. Using specimens from museum collections, abdomen dissections were conducted on 19 species of Acraea: 9 sphragis bearing and 10 non-sphragis bearing species. Genitalia imaging was performed for easier comparison and analysis and measurements of genitalia structures was done using ImageJ software. Some distinguishing morphological features in the females were found. The most obvious difference is the larger and more externalized copulatory opening in sphragis bearing species, with varying degrees of external projections. Females of the sphragis bearing species also tend to have a shorter ductus (the structure that connects the copulatory opening with the sperm storage organ) than those without the sphragis. These differences may be due to a sexually antagonistic coevolution between the males and females, where the females evolve larger and more difficult to plug copulatory openings and the males attempt to prevent re-mating with the sphragis.

RELATIVE ABUNDANCE AND THE SPECIES-SPECIFIC REINFORCEMENT OF MALE MATING PREFERENCE IN THE CHRYSOCHUS (COLEOPTERA: CHRYSOMELIDAE) HYBRID ZONE

Evolution ◽  
2005 ◽  
Vol 59 (12) ◽  
pp. 2639 ◽  
Author(s):  
Merrill A. Peterson ◽  
Barbara M. Honchak ◽  
Stefanie E. Locke ◽  
Timothy E. Beeman ◽  
Jessica Mendoza ◽  
...  
Keyword(s):  
Relative Abundance ◽  
Hybrid Zone ◽  
Mating Preference ◽  
Male Mating ◽  
Species Specific
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