Animal Behavior and Reproduction

This study reviews and analyzes 57 studies on egg hormones in wild birds, finding near-zero overall effects on maternal and offspring fitness but high heterogeneity.

This study examines how early-life adversity affects adult fitness in wild Soay sheep, finding sex-specific differences in how environmental factors influence lifetime breeding success.

The study examines multilevel selection on social behavior and group structure in wild yellow-bellied marmots, finding strong selection on group structure comparable to individual behavior.

This study examines interspecific aggression in two hybridizing wren species along an environmental gradient, finding precipitation influences aggression and hybridization may stabilize coexistence.

This study investigates reproductive costs in bluefin killifish by manipulating sex ratios and densities, finding that male aggression towards females is highest when males lack rivals.

This study examines whether sexually successful Drosophila melanogaster males sire offspring with greater pathogen resistance, finding context- and sex-dependent relationships that contradict the 'good genes' hypothesis.

This study investigates how nutrition and adult density influence sex-biased dispersal in Drosophila melanogaster, finding that female dispersal is sensitive to protein availability and density-dependent in males.

The paper examines flight performance in swallows and martins relative to tail fork depth, finding that intermediate fork depths correlate with better flight performance, suggesting sexual selection influences tail evolution.

The paper examines how sexual display behavior in two-spotted goby populations follows consistent sex-specific reaction norms across latitude in response to operational sex ratio.

This study identifies sex-specific behavioral syndromes in anemonefish using novel assays, finding significant sex differences in parental care and aggression.

This study proposes that aposematic signals may have evolved through sexual selection, leading to increased predation pressure and the eventual development of anti-predator defenses.

This study investigates how infection affects reproductive fitness and offspring parasite resistance in guppies, finding sex-dependent effects on offspring age and parasite resistance.

This study investigates genetic and environmental factors driving urban phenotypic divergence in great tits using a common garden experiment, finding that genetic and individual differences explain most trait variation, while urban behavioral differences are more plastic.

This study shows that smaller size in urban great tits is genetic, not due to food scarcity, as city and forest birds responded similarly to reduced food availability.

This study examines how fine-scale changes in food distribution and social stability affect sociality in wild great tits, finding that resource clustering increases flock size and social centrality.

The study shows female budgerigars prefer males with foraging skills different from their own, supporting the skill-pool hypothesis in mate choice.

The paper investigates sneaky pesterer reproductive tactics in banded mongooses, finding they are rarely used as a stepping stone but instead as a backup strategy with lower reproductive success.

This study examines pair-bond strength in wild jackdaws, finding it varies across the population, is consistent over time, and linked to socio-cognitive performance, but not directly to fitness outcomes.

This study shows that breeding changes female vulturine guineafowl's social status by altering dominance dynamics with both males and non-breeding females.

This study examines how sperm production and allocation in black soldier flies respond to varying sperm competition risks, showing adaptive plasticity in reproductive strategies.

The paper models the evolution of human pair bonds by simulating male mating strategies under different sex ratio conditions and finds that higher sex ratios favor mate-guarding over multiple mating.

This study examines how parasitism affects sex allocation in hermaphroditic barnacles, finding that parasite infestation reduces reproductive investment and shifts sex allocation towards males in heavily infested hosts.

The paper examines how parental care affects the relationship between early-life size, growth, and glucose metabolism in nestling barn swallows, finding that lower parental care intensifies the physiological disadvantage of being smaller.

The paper investigates feedback between social information use and production in fruit flies, finding bidirectional behavioral changes in males but not females during aggressive contests.

This study investigates how microbial environments influence oviposition decisions in Drosophila melanogaster, finding that microbial cues affect fecundity and egg placement but not antimicrobial activity.

This study examines temporal copulatory patterns in female rats, finding that receptivity influences sexual bout frequency and time-outs, while mating conditions affect less-receptive females.

The paper examines genetic variation and developmental noise in foraging traits of Drosophila lutescens, finding shared genetic basis for variation in locomotive activity and resource preferences.

This study shows that maternal and larval clocks independently control the timing of larval emergence in shell-dwelling cichlids, with each clock able to override the other under experimental conditions.

This study investigates whether predation risk experienced during the larval stage of Aedes aegypti influences antipredator behavior in the subsequent pupal stage.

The paper investigates aggression differences among throat color morphs in Aegean wall lizards in their natural habitat and finds that the white morph exhibits more aggression than orange and yellow morphs.