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28 results for “Genetic mating system”
FIGURE 2 in Genetic evidence supports polygamous mating system in a wild population of Prochilodus lineatus (Characiformes: Prochilodontidae), a Neotropical shoal spawner fish
FIGURE 2 | Alternative schematic representations of spawning in Prochilodus lineatus. A. Schematic drawing of spawning moment of Prochilodus lineatus (=Prochilodus scrofa), according to Godoy (1975), whom described that males, positioned in the center of the river channel, performed distinctive sounds, possibly attracting females (figure drawn by Josiane Ribolli and Dennis Fernando Moreno, inspired from the original by Godoy, M. P, 1975, fig. 153, p.684); B. Hypothetical schematic representation of reproduction and spawning of P. lineatus in the wild according to direct observations made by Evoy Zaniboni-Filho (personal communication). The exhausted mature female is marked with an asterisk. Figure drawn by Josiane Ribolli and Dennis Fernando Moreno.
FIGURE 1 in Genetic evidence supports polygamous mating system in a wild population of Prochilodus lineatus (Characiformes: Prochilodontidae), a Neotropical shoal spawner fish
FIGURE 1 | Inferred parentage and mating patterns derived from analysis of 87 Prochilodus lineatus larvae sampled at the Middle Uruguay River in Brazil. A. Number of adults identified as parents of the sampled larvae; B. Number of different mates inferred for males and females.
Data from: Using probability modelling and genetic parentage assignment to test the role of local mate availability in mating system variation.
The formal testing of mating system theories with empirical data is important for evaluating the relative importance of different processes in shaping mating systems in wild populations. Here we present a generally applicable probability modelling framework to test the role of local mate availability in determining a population's level of genetic monogamy. We provide a significance test for detecting departures in observed mating patterns from model expectations based on mate availability alone, allowing the presence and direction of behavioural effects to be inferred. The assessment of mate availability can be flexible and in this study it was based on population density, sex ratio and spatial arrangement. This approach provides a useful tool for (1) isolating the effect of mate availability in variable mating systems and (2) in combination with genetic parentage analyses, gaining insights into the nature of mating behaviours in elusive species. To illustrate this modelling approach, we have applied it to investigate the variable mating system of the mountain brushtail possum (Trichosurus cunninghami) and compared the model expectations with the outcomes of genetic parentage analysis over an 18 year study. The observed level of monogamy was higher than predicted under the model. Thus, behavioural traits, such as mate guarding or selective mate choice, may increase the population level of monogamy. We show that combining genetic parentage data with probability modelling can facilitate an improved understanding of the complex interactions between behavioural adaptations and demographic dynamics in driving mating system variation.
Data from: Using probability modelling and genetic parentage assignment to test the role of local mate availability in mating system variation.
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Data from: Genetic mating system and mate selection in smallmouth bass
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Data from: The impact of mating systems and dispersal on fine-scale genetic structure at maternally, paternally and biparentally inherited markers
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Data from: The unexpected genetic mating system of the red‐backed toadlet (Pseudophryne coriacea): a species with prolonged terrestrial breeding and cryptic reproductive behaviour
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Mating system and speciation I: accumulation of genetic incompatibilities in allopatry
<p>All datasets used to create the graphics of Marie-Orleach et al, <em>PLoS Genetics</em>, 2023</p>
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