scholarly journals Individual mating decisions and hybridization

2013 ◽  
Vol 26 (2) ◽  
pp. 252-255 ◽  
Author(s):  
G. G. Rosenthal
Keyword(s):  
Individual Mating

scholarly journals Phenology-mediated effects of phenotype on the probability of social polygyny and its fitness consequences in a migratory passerine

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
David Canal ◽  
Lotte Schlicht ◽  
Simone Santoro ◽  
Carlos Camacho ◽  
Jesús Martínez-Padilla ◽  
...  
Keyword(s):  
Ecological Factors ◽  
Local Networks ◽  
Mediated Effects ◽  
Fitness Consequences ◽  
Phenotypic Quality ◽  
Lifetime Number ◽  
Local Breeding ◽  
Individual Mating ◽  
Sexual Traits ◽  
Secondary Female

AbstractWhy females engage in social polygyny remains an unresolved question in species where the resources provided by males maximize female fitness. In these systems, the ability of males to access several females, as well as the willingness of females to mate with an already mated male, and the benefits of this choice, may be constrained by the socio-ecological factors experienced at the local scale. Here, we used a 19-year dataset from an individual-monitored population of pied flycatchers (Ficedula hypoleuca) to establish local networks of breeding pairs. Then, we examined whether the probability of becoming socially polygynous and of mating with an already mated male (thus becoming a secondary female) is influenced by morphological and sexual traits as proxies of individual quality relative to the neighbours. We also evaluated whether social polygyny is adaptive for females by examining the effect of females’ mating status (polygamously-mated vs monogamously-mated) on direct (number of recruits in a given season) and indirect (lifetime number of fledglings produced by these recruits) fitness benefits. The phenotypic quality of individuals, by influencing their breeding asynchrony relative to their neighbours, mediated the probability of being involved in a polygynous event. Individuals in middle-age (2–3 years), with large wings and, in the case of males, with conspicuous sexual traits, started to breed earlier than their neighbours. By breeding locally early, males increased their chances of becoming polygynous, while females reduced their chances of mating with an already mated male. Our results suggest that secondary females may compensate the fitness costs, if any, of sharing a mate, since their number of descendants did not differ from monogamous females. We emphasize the need of accounting for local breeding settings (ecological, social, spatial, and temporal) and the phenotypic composition of neighbours to understand individual mating decisions.

Territorial behaviour in males of three North American species of bumblebees (Hymenoptera: Apidae, Bombus)

1991 ◽  
Vol 69 (3) ◽  
pp. 604-613 ◽  
Author(s):  
Kevin M. O'Neill ◽  
Howard E. Evans ◽  
Louis B. Bjostad
Keyword(s):  
Sex Pheromones ◽  
Mating Systems ◽  
North American Species ◽  
Male Mating ◽  
Chemical Analyses ◽  
Territorial Behaviour ◽  
Aggressive Interactions ◽  
Plant Parts ◽  
Individual Mating ◽  
Mating Territories

The behaviour of males of the bumblebees Bombus nevadensis nevadensis, B. griseocollis, and B. rufocinctus was examined at sites in Colorado and Montana, U.S.A. Males of all three species defended individual mating territories on which they scent marked plants with cephalic chemicals, which we hypothesize to be sex pheromones. Males aggressively excluded conspecific males from the vicinity of scent-marked plants for several hours each day. At times on certain B. griseocollis territories, the great number of intruding males resulted in a near breakdown of the territorial system, with repeated aggressive interactions and turnover. In preliminary chemical analyses, dichloromethane extracts of heads of B. nevadensis and B. griseocollis were each dominated by single components, while those of B. rufocinctus, in each population studied, had three major components. Extracts of plant parts scent marked by males reveal the presence of the cephalic chemicals not present on unmarked control plants. Mating is initiated on or near territories. The behavioural and morphological correlates of male mating systems in the genus Bombus and other aculeate Hymenoptera are discussed.

scholarly journals Characterisation of nine new polymorphic microsatellite loci in the reticulated glass frog Hyalinobatrachium valerioi (Centrolenidae)

2014 ◽  
Vol 35 (2) ◽  
pp. 243-246 ◽  
Author(s):  
Eva Ringler ◽  
Alexandra Mangold ◽  
Katharina Trenkwalder ◽  
Max Ringler ◽  
Walter Hödl
Keyword(s):  
Evolutionary Biology ◽  
Behavioural Ecology ◽  
Field Site ◽  
Local Populations ◽  
Wide Range ◽  
Hardy Weinberg Equilibrium ◽  
Individual Mating ◽  
Genetic Mating System ◽  
Polymorphic Microsatellite ◽  
Scientific Questions

Here we document the development of thirteen novel microsatellite markers for the reticulated glass frog Hyalinobatrachium valerioi (Centrolenidae). Nine of those markers were polymorphic and contained between 4 and 34 alleles per locus (mean = 20.3) in 138 individuals (91 males, 47 females) from the field site ‘La Gamba’, Costa Rica. Average observed heterozygosity was 0.76. Two loci (Hyval19 and Hyval21) significantly deviated from Hardy-Weinberg equilibrium. We did not find evidence for linkage disequilibrium among any of the loci. These markers will serve to identify the genetic mating system in H. valerioi, investigate gene flow between local populations, and reconstruct parent-offspring relationships for studies on individual mating and reproductive success. Therefore, these markers will serve to answer a wide range of scientific questions in conservation, behavioural ecology, and also evolutionary biology.

Mate Choice and Human Exceptionalism

Mate Choice ◽  
2017 ◽  
Author(s):  
Gil G. Rosenthal
Keyword(s):  
Mate Choice ◽  
Human History ◽  
Large Reservoir ◽  
Mating Preferences ◽  
Human Exceptionalism ◽  
The Social ◽  
Societal Changes ◽  
Individual Mating ◽  
Evolutionary Consequences ◽  
Reproductive Consequences

This chapter presents a biological perspective on the diversity and complexity of human mate choice. Mating preferences can change very rapidly owing to the fact that they depend on a large reservoir of standing genetic variations whose effects can be modified and reversed by environmental and social inputs. In contemporary global society, rapid technological and societal changes means that individual mating preferences have an unprecedented potential to be revealed and expressed as choices, some with reproductive consequences. Individuals now have more agency than they ever have in human history, with a greater opportunity than ever to sample potential mates. The social and evolutionary consequences are sure to be fascinating.

Patterns of Gonadic Development and Operational Sex Ratio Promote Promiscuity of Euxesta bilimeki (Diptera:Ulidiidae)

2020 ◽  
Author(s):  
Christian L Rodríguez-Enríquez ◽  
Diana Pérez-Staples ◽  
Oscar Rios-Cardenas ◽  
Juan Rull
Keyword(s):  
Sex Ratio ◽  
Protein Content ◽  
Operational Sex Ratio ◽  
Mating Frequency ◽  
Body Protein ◽  
Protein Ingestion ◽  
Full Complement ◽  
Individual Mating ◽  
Males And Females ◽  
Testes Size

Abstract Promiscuous mating systems are widely distributed among animals and can be promoted by operational sex ratios (number of receptive adults; OSR). In populations where OSR is not biased towards any sex, the possibility that males and females mate with several individuals increases. For both sexes to synchronize in time and space for reproduction, adults should possess or simultaneously acquire nutrients required to reach sexual maturity. Among synovigenic (without a full complement of eggs at eclosion) species, nutrient acquisition, protein in particular, may influence the OSR. In the Agave fly Euxesta bilimeki (Hendel) (Diptera: Ulidiidae), both sexes engage in multiple mating and females frequently expel all or part of the ejaculate. Here, we assessed the effect of protein intake on gonadic development, and estimated OSR from field-collected individuals. Body protein content was compared between wild and laboratory individuals with access to different diets, and mating frequency and individual mating rate were analyzed for cohorts at a 1:1 sex ratio. Both sexes required protein ingestion for gonadic development, but there were no differences in protein content between field-collected males and males fed protein and sugar in the laboratory, despite the fact that males assigned 9.3% of their corporal weight to testicles. Euxesta bilimeki is a promiscuous species where both males and females mate multiply with one or several individuals in short periods of time; thus, large testes size may be linked to the need of voluminous ejaculate production, and might be further exacerbated by female ejaculate expulsion.

Modeling Mating Patterns Given Mutual Mate Choice: The Importance of Individual Mating Preferences and Mating System

2003 ◽  
Vol 11 (03) ◽  
pp. 205-219 ◽  
Author(s):  
Carmen Bessa-Gomes ◽  
Jean Clobert ◽  
Stéphane Legendre ◽  
Anders Pape Møller
Keyword(s):  
Mate Choice ◽  
Sex Ratio ◽  
Mating System ◽  
Population Biology ◽  
Structured Populations ◽  
Operational Sex Ratio ◽  
Mating Preferences ◽  
Mating Patterns ◽  
Single Sex ◽  
Individual Mating

When we consider structured populations with sexual reproduction, the distribution of characters among mating pairs may influence the population biology, namely its dynamics and genetics. In the present paper, we propose a general framework to estimate the population mating patterns taking into account individual mating preferences and mating system, thus taking into account the inter- and intra-sexual interactions such as mate competition and mate choice. According to our results, mating patterns are not a direct reflection of mating preferences, but also depend upon the average sex ratio between individuals that are ready to mate at any given time (i.e., the Operational Sex Ratio, OSR). Therefore, mating patterns should be assessed not only in function of preferences, but also of OSR. It is then possible to distinguish three OSR regions: (1) the equilibrium OSR, where there is a predominance of assortative mating patterns due to differential access to mates (inter-sexual interactions); (2) the slightly biased OSR, where there is a high diversity of mating patterns and no clear predominance of inter- or intra-sexual interactions; and (3) the highly biased OSR where there is a predominance of mating patterns corresponding to single-sex uniform preferences and an increased influence of intra-sexual interactions. We hope that this approach may allow to further explore the interaction between OSR and mate choice, namely how such interaction may affect sexual selection and mate choice tactics.

Individual mating success, lek stability, and the neglected limitations of statistical power

1998 ◽  
Vol 56 (3) ◽  
pp. 755-762 ◽  
Author(s):  
HANNA KOKKO ◽  
WILLIAM J SUTHERLAND ◽  
JAN LINDSTRÖM ◽  
JOHN D REYNOLDS ◽  
AULAY MACKENZIE
Keyword(s):  
Mating Success ◽  
Statistical Power ◽  
Individual Mating
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