A5058850192- Animal Behavior and Reproduction
- Plant and animal studies
- Ecology and Vegetation Dynamics Studies
- Insect and Arachnid Ecology and Behavior
- Species Distribution and Climate Change
- Avian ecology and behavior
- Amphibian and Reptile Biology
- Lepidoptera: Biology and Taxonomy
- Primate Behavior and Ecology
- Evolution and Genetic Dynamics
- Crustacean biology and ecology
- Animal Ecology and Behavior Studies
- Marine animal studies overview
- Wildlife Ecology and Conservation
- Insect Utilization and Effects
- Insect-Plant Interactions and Control
The University of Western Australia
2011-2014
Stockholm University
2007-2011
Male reproductive success is influenced by competitive interactions during precopulatory and postcopulatory selective episodes. Consequently, males can gain advantages contest competition investing in weaponry sperm ejaculates. However, recent theory predicts male expenditure on ejaculates should be subject to a trade-off, vary under increasing risk intensity of competition. Here, we provide the first comparative analysis prediction that negatively associated with testes mass. Specifically,...
In numerous species, egg chemoattractants play a critical role in guiding sperm towards unfertilized eggs (sperm chemotaxis). Until now, the known functions of chemotaxis include increasing effective target size eggs, thereby promoting sperm–egg encounters, and facilitating species recognition. Here, we report that broadcast spawning mussel, Mytilus galloprovincialis , may an unforeseen sexual selection by enabling to effectively ‘choose’ between different conspecific females. initial...
Abstract The size of the vertebrate brain is shaped by a variety selective forces. Although larger brains (correcting for body size) are thought to confer fitness advantages, energetic limitations this costly organ may lead trade‐offs, example as recently suggested between sexual traits and neural tissue. Here, we examine patterns selection on male female in pinnipeds, group where strength differs markedly among species sexes. Relative was negatively associated with intensity males but not...
Sexual selection is argued to be important for the removal of deleterious mutations, promoting population fitness, accelerating adaptation, and compensating two-fold cost sex. Here we induced mutations in dung beetle Onthophagus taurus using ionizing radiation, tested efficacy sexual their removal. Mutations reduced male precopulatory (strength) postcopulatory (testes mass) traits. Two generations were sufficient remove that affected strength, but not testes mass. Induced did affect female...
For an animal to escape attacking predator, speed and manoeuvrability are likely be crucial factors. Previous studies on reptiles birds have revealed that gaining weight, due for instance egg load or lipid accumulation, leads impaired ability possibly increases the risk of being caught by predators. Here we tested whether flight performance insect, small tortoiseshell butterfly (Aglais urticae), is affected variations in body mass feeding comparing parameters between individuals (i) took...
Abstract Competitive fertilization success can depend on the relative abilities of competing males to fertilize available ova, and mechanisms cryptic female choice that moderate paternity. is thus an emergent property male genotypes, genotype their interactions. Accurate estimates intrinsic effects competitive are therefore problematic. We used a cross‐classified nonbreeding design in which rival family background was standardized partition variation among backgrounds field cricket T...
Flight ability is generally expected to increase with relative flight muscle mass.Changes in weight can therefore be influence the capacity rapidly take-off, which determine mating success and predator avoidance.This study examined of mass, sex, season on free take-off a butterfly model ( Aglais urticae) that undergoes adult winter hibernation.Mass change (velocity angle), was predicted fluctuate (before, during after hibernation) sex (due reproductive investment).Our results indeed showed...