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37 results for “mating strategy”
Figure 4 in The influence of ants on the mating strategy of a myrmecophilic jumping spider (Araneae, Salticidae)
Figure 4. Comparison of number of Phintella piatensis pairs mating inside versus outside nest, under two different conditions. Ants present: data from testing in presence of mounts made from Oecophylla smaragdina workers. Ants not present: pooled data from testing in the presence of mounts made from Nephotettix nigropictus (leafhoppers) and testing in the absence of mounts.
Figure 2 in The influence of ants on the mating strategy of a myrmecophilic jumping spider (Araneae, Salticidae)
Figure 2. Influence of presence of nests and of interacting with conspecific individuals on survival of Phintella piatensis with ants (three Oecophylla smaragdina workers). Group A: male–juvenile pair, no nest. Group B: female–female pair, no nest. Group C: male–female pair, ants not introduced until mating ended, no nest. Group D: male–female pair (female mated 2 days earlier), no mating, no nest. Group E: male–male pair, no nest. Group F: male– female pair mating, no nest. Group G: male–female pair, in nest. For all groups, n580 except Group F (n540).
Figure 1 in The influence of ants on the mating strategy of a myrmecophilic jumping spider (Araneae, Salticidae)
Figure 1. Phintella piatensis male, with body lowered, probing on nest. Female in nest. Note rectangular shape of nest.
Figure 11 in The influence of ants on the mating strategy of a myrmecophilic jumping spider (Araneae, Salticidae)
Figure 11. Phintella piatensis male (facing up and to left) in tiptoe posture while standing on female's nest. Palps downward (extend straight down). All leg tarsi contacting silk.
Figure 10 in The influence of ants on the mating strategy of a myrmecophilic jumping spider (Araneae, Salticidae)
Figure 10. Phintella piatensis males embracing. Palps erect in Position 2. Legs I erect in Position 3. Chelicerae spread apart and fangs extended.
Figure 6 in The influence of ants on the mating strategy of a myrmecophilic jumping spider (Araneae, Salticidae)
Figure 6. Mating pair of Phintella piatensis. Female (below; facing left) with abdomen flexed up and rotated to her left; cephalothorax lowered. Male (above; facing right and down) standing with his body to female's right side. Male's body tilted down.
Data from: From resource to female defence: the impact of roosting ecology on a bat's mating strategy
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Data from: Biomechanical diversity of mating structures among harvestmen species is consistent with a spectrum of precopulatory strategies
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Data from: Genetic evidence for polygamy as a mating strategy in Caiman crocodilus
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Data from: Female-biased dispersal in a bat with a female-defence mating strategy
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Figures 5-7 from: Waldren GC, Roberts JD, Pitts JP (2020) Phoretic copulation in the velvet ant Sphaeropthalma pensylvanica (Lepeletier) (Hymenoptera, Mutillidae): A novel behavior for Sphaeropthalminae with a synthesis of mating strategies in Mutillidae. Journal of Hymenoptera Research 78: 69-89. https://doi.org/10.3897/jhr.78.55762
Figures 5-7 Examples of each type of mating strategy in Mutillidae5ISC, Dasymutilla foxi (Cockerell, 1894) in Arizona, USA; photograph by Mark H. Brown 6TPC, Myrmosa unicolor Say, 1824 in New York, USA; photograph by A. D. Levine 7MPC, Wallacidia oculata (Fabricius, 1804) in Southern District, Hong Kong; photograph by 'aabbabc.'
Figures 1-4 from: Waldren GC, Roberts JD, Pitts JP (2020) Phoretic copulation in the velvet ant Sphaeropthalma pensylvanica (Lepeletier) (Hymenoptera, Mutillidae): A novel behavior for Sphaeropthalminae with a synthesis of mating strategies in Mutillidae. Journal of Hymenoptera Research 78: 69-89. https://doi.org/10.3897/jhr.78.55762
Figures 1-4 MPC-practicing pair of Sphaeropthalma pensylvanica (Lepeletier, 1845) in Alabama, USA; photographs by Jason D. Roberts.
Data from: Pair bonds, reproductive success and rise of alternate mating strategies in a social carnivore.
Monogamy is commonly observed across a wide variety of species and taxa and arises when young are altricial, parental investment in young is high, and mate monopolization is generally not possible. In such species, pairs may bond for multiple breeding seasons while successfully rearing young. Individuals, however, may attempt to bypass the dominant mating strategy particularly when breeding opportunities are limited. Currently, we do not know how pair bond duration affects the efficacy of alternative mating strategies in populations with a monogamous mating system. Additionally, inferences about pair bond effects on reproductive success (i.e., both clutch size and recruitment) are largely limited to long-lived birds and little is known about effects on mammalian cooperative breeders. I used genetic sampling and pedigrees to examine the effects of pair bond duration on reproductive success (i.e., litter size, recruitment) and mating strategies in a population of gray wolves (Canis lupus) in Idaho USA. There was a positive, marginally significant relationship between pair bond duration and apparent survival of offspring. Increased pair bond duration was also associated with a dampening in the prevalence of other alternative mating strategies such as sneaker males and polygamy. The selective advantage of alternative mating strategies are a combination of population, group (for applicable species), individual, and social influences such as pair bonds. The distribution of pair bonds in a monogamous population affects the selective advantage, and hence frequency, of various mating strategies observed.
Figure 7 in The influence of ants on the mating strategy of a myrmecophilic jumping spider (Araneae, Salticidae)
Figure 7. Phintella piatensis male (facing right) in sprawled-legs posture with body tilted up.
Data from: Pair bonds, reproductive success and rise of alternate mating strategies in a social carnivore.
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Data from: Contrasting reproductive strategies of triploid hybrid males in vertebrate mating systems
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Figure 3 in The influence of ants on the mating strategy of a myrmecophilic jumping spider (Araneae, Salticidae)
Figure 3. Influence of seeing ants on mating decisions of Phintella piatensis. Ants visible: mounts made from Oecophylla smaragdina (ants). Leafhoppers visible: mounts made from Nephotettix nigropictus (leafhoppers). No mounts present: empty Petri dish. For each treatment, tests were performed in cages where there was no available nest, in cages where nest was available but female was outside and in cages where female was already inside nest. For testing with female already in nest, n520 for each treatment. For all others, n550.
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