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24 results for “Mating status”
Fig. 3 in Effects of male age and mating status on response to the female sex pheromone of Copitarsia decolora (Lepidoptera: Noctuidae)
Fig. 3. Activation latencies (black bars) and landing latencies (gray bars) (Q1 <Median <Q2) of virgin and mated Copitarsia decolora males to female sex pheromone extract (3FE) in wind tunnel bioassays. Mated males were tested 24 h and 48 h afer mating (24 AM and 48 AM, respectively). Bars within a behavior headed by the same letter are not significantly different (Tukey's mean separation test, n = 10, P <0.05).
Fig. 1 in Effects of male age and mating status on response to the female sex pheromone of Copitarsia decolora (Lepidoptera: Noctuidae)
Fig. 1. Activation latencies (black bars) and landing latencies (gray bars) (Q1 <Median <Q2) by age group of virgin males in response to a glandular extract of female sex pheromone (3FE) in wind tunnel bioassays. Bars within a behavior headed by the same letter are not significantly different (Tukey's mean separation test, n = 10, P <0.05).
Fig. 4 in Effects of male age and mating status on response to the female sex pheromone of Copitarsia decolora (Lepidoptera: Noctuidae)
Fig. 4. Depolarization (mean ± SEM) of antennae in response to a glandular extract of female sex pheromone (3FE) of virgin and mated males. Mated males were tested 24 h and 48 h afer mating (24 AM and 48 AM, respectively). Bars headed by the same letter are not significantly different (Tukey's mean separation test, n = 6, P <0.05).
Data from: Individual differences are consistent across changes in mating status and mediated by biogenic amines
Although aspects of an individual's state are well-known to influence the expression of behavior, it is still unclear how elements of state affect consistent among-individual differences in behavior. With binary, irreversible elements of state, such as mating status, there may be optimal behavioral phenotypes before and after mating, with individuals often prioritizing mate acquisition before and resource acquisition after. Yet, limited plasticity may prevent optimal behavior in both contexts. Additionally, it remains largely unknown if some consistencies in neural or physiological traits may limit the ability of the organism to respond to state changes. In this study, we investigated how changes in a binary state variable, mating status, affected both the mean expression and among-individual variation in behavior and web structure of the redback spider, Latrodectus hasselti. Furthermore, we explored the role of biogenic amines in potentially mediating individual differences in behavior and web structure. We found that mated females were overall more aggressive than virgin females and also built webs structured primarily for capturing prey rather than safety. We also found that individual differences in behavior and web structure were maintained across mating statuses, which indicates the stability of these traits and may drive personality-specific state-dependent fitness trade-offs. Finally, we found that aggressive spiders had higher central nervous system dopamine levels. Interestingly, web structure was often correlated with a catabolite of tyramine (N-acetyltyramine), suggesting that variation in amine catabolism, and not the concentrations of the amines themselves, may drive individual differences in some traits.
Mating status affects female choice in Chloridea virescens
<p>Sexual selection in animals has been mostly studied in species in which males are signallers and females are choosers. However, in many species females are (also) signallers. In species with non-signalling females, virgin females are hypothesized to be less choosy than mated females, as virgins must mate to realize fitness and the number of available males is generally limited. Yet, when females signal to attract males, mate limitation can be overcome. We tested how virgin and mated females differ in their calling behaviour, mating latency, and in mate choice, using the tobacco budworm <em>Chloridea</em> (<em>Heliothis</em>) <em>virescens</em> as an example for a species in which females are not only choosers but also signallers. We found that virgin females signalled longer than mated females, but virgin and mated signalling females were equally ready to mate, in contrast to non-signalling females. However, we found that virgin signalling females showed weaker mate preference than mated females, which can be explained by the fact that females increase their fitness with multiple matings. Mated females may thus further increase their fitness by more stringent mate selection. We conclude that signalling is a crucial aspect to consider when studying female mate choice, because signalling may affect the number of available mates to choose from.</p>
Mating status affects female choice in Chloridea virescens
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Data from: Individual differences are consistent across changes in mating status and mediated by biogenic amines
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Males discriminate between substrate-borne cues of conspecific females based on age and mating status in the jumping spider, Habronattus brunneus
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Mating status-dependent 'choice' in competitive and non-competitive arenas
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Data from: Dynamic phenotypic correlates of social status and mating effort in male and female red junglefowl, Gallus gallus
Despite widespread evidence that mating and intra-sexual competition are costly, relatively little is known about how these costs dynamically change male and female phenotypes. Here, we test multiple hypotheses addressing this question in replicate flocks of red junglefowl (Gallus gallus). First, we test the inter-relationships between social status, comb size (a fleshy ornament) and body mass at the onset of a mating trial. While comb size covaried positively with body mass across individuals of both sexes, comb size was positively related to social status in females but not in males. Second, we test for changes within individuals in body mass and comb size throughout the mating trial. Both body mass and comb size declined at the end of a trial in both sexes, suggesting that mating effort and exposure to the opposite sex are generally costly. Males lost more body mass if they: i) were socially subordinate, ii) were chased by other males, or iii) mated frequently, indicating that subordinate status and mating are independently costly. Conversely, females lost more body mass if they were exposed to a higher frequency of coerced matings, suggesting costs associated with male sexual harassment and female resistance, although costs of mating per se could not be completely ruled out. Neither competitive nor mating interactions predicted comb size change in either sex. Collectively, these results support the notion that sex-specific costs associated with social status and mating effort result in differential, sex-specific dynamics of phenotypic change.
Integrative taxonomic analysis to reveal the species status of Bombus flavidus, combining COI and nuclear sequencing, wing morphometrics and secretions used for mate attraction as well as patterns of color polymorphism
<p>Bumble bees, due to their morphological monotony and color diversity, have presented difficulties with species delimitation. Recent bumble bee declines have made it ever more imperative to resolve the status of species to address conservation concerns. Some of the taxa found to be most threatened are the often-rare socially parasitic bumble bees, which have additional trophic requirements. Among the socially parasitic bumble bees,<i> Bombus flavidus</i> Eversmann has contentious species status. While multiple separate species allied with <i>Bombus flavidus</i> have been suggested, until recently, recognition of two species, a Nearctic <i>Bombus fernaldae</i> (Franklin) and Palearctic <i>B. flavidus,</i> was favoured. Limited genetic data, however, suggested that even these could be a single widespread species, <i>B. flavidus</i>. We addressed the species status of this lineage using an integrative taxonomic approach, combining <i>COI</i> and nuclear sequencing, wing morphometrics and secretions used for mate attraction. We also explore patterns of color polymorphism that have previously confounded taxonomy in this lineage. Our results support the conspecific status of <i>Bombus fernaldae</i> and <i>Bombus flavidus,</i> however, sampling specimens from across the range of these two taxa revealed a distinct population within this broader species confined to eastern North America. This makes the distribution of the social parasite <i>B. flavidus</i> the broadest of any bumble bee, broader than the known distribution of any non-parasitic bumble bee species. Analysis of color phenotypes revealed that color polymorphisms are retained across the range of the species, but may be influenced by local mimicry complexes. Following these results, <i>Bombus flavidus</i> Eversmann, 1852<i> </i>is synonymized with <i>Bombus fernaldae </i>(Franklin, 1911) <b>syn. nov.</b> and a subspecific status, <i>Bombus flavidus </i><i>appalachiensis</i> <b>ssp. nov.</b>, is assigned to the distinct lineage ranging from the Appalachians to the eastern boreal regions of the United States and far southeastern Canada.</p>
Data from: Mating status correlates with dorsal brightness in some but not all poison frog populations
Sexual signals are important for intraspecific communication and mate selection, but their evolution may be driven by both natural and sexual selection, and stochastic processes. Strawberry poison frogs (Oophaga pumilio) show strong color divergence among populations, but coloration also varies among individuals of the same population. The importance of coloration for female mate choice has been studied intensely, and sexual selection seems to affect color divergence in strawberry poison frogs. However, the effect of coloration on mating success under field conditions has received very little attention. Furthermore, few studies examined how phenotypic variation among individuals of the same color morph affects mate selection under natural conditions. We measured the spectral reflectance of courting and noncourting individuals and their background substrates in three geographically separated populations. In one population (Sarapiquí, Costa Rica), we found that naturally occurring courting pairs of males and females had significantly brighter dorsal coloration than individual males and females not engaged in courtship interactions. Our field observations suggest that, in the wild, females prefer brighter males while the reason for the higher courtship activity of brighter females remains unclear. Overall our results imply that brightness differences among individuals of the same color morph may actually affect reproductive success in some populations of strawberry poison frogs.
Integrative taxonomic analysis to reveal the species status of Bombus flavidus, combining COI and nuclear sequencing, wing morphometrics and secretions used for mate attraction as well as patterns of color polymorphism
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Data from: Mating status correlates with dorsal brightness in some but not all poison frog populations
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Data from: Dynamic phenotypic correlates of social status and mating effort in male and female red junglefowl, Gallus gallus
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Data from: Dietary choices are influenced by genotype, mating status, and sex in Drosophila melanogaster
Mating causes many changes in physiology, behaviour and gene expression in a wide range of organisms. These changes are predicted to be sex-specific, influenced by the divergent reproductive roles of the sexes. In female insects, mating is associated with an increase in egg production which requires high levels of nutritional input with direct consequences for the physiological needs of individual females. Consequently, females alter their nutritional acquisition in line with the physiological demands imposed by mating. Although much is known about the female mating-induced nutritional response, far less is known about changes in males. In addition, it is unknown whether variation between genotypes translates into variation in dietary behavioral responses. Here we examine mating-induced shifts in male and female dietary preferences across genotypes of Drosophila melanogaster. We find sex- and genotype-specific effects on both the quantity and quality of the chosen diet. These results contribute to our understanding of sex-specific metabolism and reveal genotypic variation that influences responses to physiological demands.
Fig. 2 in Effects of male age and mating status on response to the female sex pheromone of Copitarsia decolora (Lepidoptera: Noctuidae)
Fig. 2. Depolarization (mean ± SEM) of virgin male antennae in response to a glandular extract of female sex pheromone (3FE) by male age. Bars headed by the same letter are not significantly different (Tukey's mean separation test, n = 6, P <0.05).
Assortative mating for between-patch dispersal status in a wild bird population: Exploring the role of direct and indirect underlying mechanisms
<p><span>Previous studies have reported functional integration between dispersal and other phenotypic traits allowing individuals to alleviate dispersal costs, and such associations can affect dispersal evolution in return. In sexually reproducing species, assortative mating according to dispersal can shape the maintenance of such trait associations. Despite the potentially crucial consequences of dispersal in natural populations, assortative mating for dispersal and its underlying mechanisms remain largely unexplored. Here, we assessed assortative mating for between-patch dispersal status in a fragmented population of a small passerine bird, the collared flycatcher, and explored whether such assortative mating could result from (i) direct mate choice based on dispersal-related behavioural (aggressiveness and boldness) and morphological traits (tarsus and wing length), (ii) biased mating due to spatio-temporal heterogeneity in the distribution of dispersal phenotypes and/or (iii) post-mating adjustment of dispersal phenotype or dispersal-related traits. We found intrinsic assortative mating (i.e. positive among-pair correlation) for current dispersal status (in the year of mating) but not for natal dispersal status, even though we could not exclude it due to limited power. We also found assortative mating for boldness and age category (yearlings vs. older adults), and the probability for pair members to be assorted for current dispersal status was higher when both pair members were of similar boldness score and of the same age compared to mixed-age pairs. Mate choice based on boldness and age thus appears as a possible mechanism underlying assortative mating for dispersal status. Our analyses however remained correlative and only an experimental manipulation of these traits could allow inferring causal links. Non-random mating for dispersal-related traits may affect the evolution of dispersal syndromes in this population. More work is nevertheless needed to fully assess the evolutionary implications of age- and behaviour-based assortative mating for dispersal.</span></p>
Data from: Rearing temperature influences adult response to changes in mating status
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Assortative mating for between-patch dispersal status in a wild bird population: Exploring the role of direct and indirect underlying mechanisms
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