Female Mate Preference and Male Mating Success of Ayu Fish, Plecoglossus altivelis (Osmeridae) under a Promiscuous Mating System

Ethology ◽  
2010 ◽  
Vol 95 (3) ◽  
pp. 193-201 ◽  
Author(s):  
Kei'ichiroh Iguchi ◽  
Koji Maekawa
Keyword(s):  
Mating System ◽  
Mating Success ◽  
Mate Preference ◽  
Male Mating ◽  
Male Mating Success ◽  
Plecoglossus Altivelis ◽  
Female Mate Preference ◽  
Female Mate

scholarly journals Evolution of sex ratio through gene loss

2019 ◽  
Vol 116 (26) ◽  
pp. 12919-12924 ◽  
Author(s):  
Da Yin ◽  
Eric S. Haag
Keyword(s):  
Sex Ratio ◽  
Population Growth ◽  
Mating System ◽  
Mating Success ◽  
Population Subdivision ◽  
Male Mating ◽  
Mixed Mating ◽  
Male Mating Success ◽  
Caenorhabditis Briggsae ◽  
Male Frequency

The maintenance of males at intermediate frequencies is an important evolutionary problem. Several species ofCaenorhabditisnematodes have evolved a mating system in which selfing hermaphrodites and males coexist. While selfing produces XX hermaphrodites, cross-fertilization produces 50% XO male progeny. Thus, male mating success dictates the sex ratio. Here, we focus on the contribution of themale secreted short(mss) gene family to male mating success, sex ratio, and population growth. Themssfamily is essential for sperm competitiveness in gonochoristic species, but has been lost in parallel in androdioecious species. Using a transgene to restoremssfunction to the androdioeciousCaenorhabditis briggsae,we examined how mating system and population subdivision influence the fitness of themss+genotype. Consistent with theoretical expectations, whenmss+andmss-null (i.e., wild type) genotypes compete,mss+is positively selected in both mixed-mating and strictly outcrossing situations, though more strongly in the latter. Thus, while sexual mode alone affects the fitness ofmss+, it is insufficient to explain its parallel loss. However, in genetically homogenous androdioecious populations,mss+both increases male frequency and depresses population growth. We propose that the lack of inbreeding depression and the strong subdivision that characterize naturalCaenorhabditispopulations impose selection on sex ratio that makes loss ofmssadaptive after self-fertility evolves.

Some Determinants of the Mating System in a Population of Painted Reed Frogs (Hyperolius Marmoratus)

Behaviour ◽  
1988 ◽  
Vol 106 (3-4) ◽  
pp. 265-278 ◽  
Author(s):  
Steven R. Telford ◽  
Miranda L. Dyson
Keyword(s):  
Mating System ◽  
Mating Success ◽  
Breeding Site ◽  
Mating Strategies ◽  
Operational Sex Ratio ◽  
Advertisement Call ◽  
Male Mating ◽  
Male Mating Success ◽  
Male Population ◽  
Sonic Environment

AbstractHyperolius marmoratus shares its breeding site with 12 synchronously breeding species. Males call from elevated perches to attract females. Observations of captive populations suggest that males may adopt alternative mating strategies when chorus densities are high. Similar strategies were not observed in natural choruses. The operational sex ratio (OSR) was always male-biased and also highly variable. Mating was polygynous, only 25% of the male population actually mated. Females mated either once or twice. Variance in mating success was much greater among males, an obvious consequence of a skewed OSR. Female choice was probably not a causal factor because male mating success was correlated with neither size nor age. Size-based variation in the male advertisement call does exist, but females cannot exploit this potential vocal cue because of their impaired discriminatory ability in a complex sonic environment and the potential risk of mismating. Although the mating system may best be described as lek-like, with males forming organised choruses through competitive interactions, the variance in male mating success is probably a consequence of stochastic factors.

scholarly journals Mate choice confers direct benefits to females ofAnastrepha fraterculus(Diptera: Tephritidae)

2019 ◽  
Author(s):  
Guillermo E. Bachmann ◽  
Francisco Devescovi ◽  
Ana L. Nussenbaum ◽  
Fabián H. Milla ◽  
Todd E. Shelly ◽  
...  
Keyword(s):  
Mate Choice ◽  
Mating System ◽  
Female Choice ◽  
Mating Success ◽  
Female Preference ◽  
Male Mating ◽  
Male Mating Success ◽  
Lek Mating ◽  
Direct Benefits ◽  
Tephritid Fruit Flies

AbstractExposure to plant compounds and analogues of juvenile hormone (JH) increase male mating success in several species of tephritid fruit flies. Most of these species exhibit a lek mating system, characterized by active female choice. Although the pattern of enhanced male mating success is evident, few studies have investigated what benefits, if any, females gain via choice of exposed males in the lek mating system. In the South American fruit fly,Anastrepha fraterculus, females mate preferentially with males that were exposed to volatiles released by guava fruit or treated with methoprene (a JH analogue). Here, we tested the hypothesis that female choice confers direct fitness benefits in terms of fecundity and fertility. We first carried out mate choice experiments presenting females with males treated and non-treated with guava volatiles or, alternatively, treated and non-treated with methoprene. After we confirm female preference for treated males, we compared the fecundity and fertility between females mated with treated males and non-treated ones. We found thatA. fraterculusfemales that mated with males exposed to guava volatiles showed higher fecundity than females mated to non-exposed males. On the other hand, females that mated methoprene-treated males showed no evidence of direct benefits. Our findings represent the first evidence of a direct benefit associated to female preference for males that were exposed to host fruit odors in tephritid fruit flies. Differences between the two treatments are discussed in evolutionary and pest management terms.

Levels of Female Choice in the White-Tailed Skimmer Plathemis Lydia (Odonata: Libellulidae)

Behaviour ◽  
1991 ◽  
Vol 119 (3-4) ◽  
pp. 193-224 ◽  
Author(s):  
Walter D. Koenig
Keyword(s):  
Mate Choice ◽  
Mating Success ◽  
Low Frequency ◽  
Male Mating ◽  
Female Size ◽  
Minor Importance ◽  
Male Mating Success ◽  
Male Size ◽  
Control Female ◽  
Female Mate

AbstractMale Plathemis lydia defend mating territories along the perimeter of ponds. Females come to ponds for brief periods of time every few days to oviposit. During these visits, females actively discriminate among males, rejecting up to 48.9 % of mating attempts. Males varied significantly in the proportion of attempts successfully leading to copulation. However, males that obtained more matings also experienced more rejections. Extensive analyses based on absolute male size, relative male size, and male size relative to female size yielded only marginally significant evidence of female mate preference based on body mass, wing length, wing loading index, or age; to the extent that any of these characters appeared to influence mating success, they similarly influenced refusal rates. The overall weakness of female mate choice is further suggested by the frequency of females ovipositing without prior matings and by the low frequency with which females remate with the same males. On a population basis, females strongly prefer to oviposit in the middle of the day and at particular parts of the study pond. Thus, females exhibit strong choice at several levels. However, despite the high incidence of active female rejection and high variance in male mating success, mate choice is apparently of minor importance in this population. Female discrimination of males, combined with variance in male mating success, are necessary but not sufficient for the action of sexual selection via mate choice. These findings support the prediction that male-male competition is of primary importance in resource control mating systems in which males are able to control female access to most or all favored oviposition sites. However, it is not clear why females generally fail to discriminate among males, given that they have the opportunity to do so. In general, females appear to have low motivation to mate with males, presumably because multiple mating does not significantly increase their fertility or fecundity. Selection for rapid mating may be significant, both because of predation on females during mating and oviposition and because of the risks for males of losing their territories during mating bouts. This time constraint may be the most important factor limiting female discrimination among males on the basis of consistent characteristics.

Longevity and Male Mating Success in Drosophila pseudoobscura

1981 ◽  
Vol 117 (6) ◽  
pp. 1035-1039 ◽  
Author(s):  
Charles E. Taylor ◽  
Cindra Condra ◽  
Michael Conconi ◽  
Mary Prout
Keyword(s):  
Mating Success ◽  
Drosophila Pseudoobscura ◽  
Male Mating ◽  
Male Mating Success

scholarly journals ADAPTATION AT SPECIFIC LOCI. IV. DIFFERENTIAL MATING SUCCESS AMONG GLYCOLYTIC ALLOZYME GENOTYPES OF COLIAS BUTTERFLIES

Genetics ◽  
1985 ◽  
Vol 109 (1) ◽  
pp. 157-175
Author(s):  
Ward B Watt ◽  
Patrick A Carter ◽  
Sally M Blower
Keyword(s):  
Mating Success ◽  
Initial Study ◽  
Heterozygote Advantage ◽  
Male Mating ◽  
Genotype Distribution ◽  
Male Mating Success ◽  
Evolutionary Forces ◽  
Fitness Index ◽  
In The Wild ◽  
Specific Variation

ABSTRACT Male mating success as a function of genotype is an important fitness component. It can be studied in wild populations, in species for which a given group of progeny has exactly one father, by determining genotypes of wild-caught mothers and of sufficient numbers of their progeny. Here, we study male mating success as a function of allozyme genotype at two glycolytic loci in Colias butterflies, in which sperm precedence is complete, so that the most recent male to mate fathers all of a female's subsequent progeny.—For the phosphoglucose isomerase, PGI, polymorphism, we predict mating advantage and disadvantage of male genotypes based on evaluation of their biochemical functional differences in the context of thermal-physiological-ecological constraints on the insects' flight activity. As predicted, we find major, significant advantage in mating success for kinetically favored genotypes, compared to the genotype distribution of males active with the sampled females in the wild. These effects are repeatable among samples and on different semispecies' genetic backgrounds.—Initial study of the phosphoglucomutase, PGM, polymorphism in the same samples reveals heterozygote advantage in male-mating success, compared to males active with the females sampled. This contrasts with a lack of correspondence between PGI and PGM genotypes in other fitness index or component differences.—Epistatic interactions in mating success between the two loci are absent.—There is no evidence for segregation distortion associated with the alleles of either primary locus studied, nor is there significant assortative mating.—These results extend our understanding of the specific variation studied and suggest that even loci closely related in function may have distinctive experience of evolutionary forces. Implications of the specificity of the effects seen are briefly discussed.

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