Animal Behavior and Reproduction

The paper reanalyzes sperm length data from multiple Drosophila species using statistical clustering to determine the number of sperm morphs, finding that some species have two parasperm morphs while others have one.

The paper tests the status signaling hypothesis by measuring aggression toward painted plumage models in American Herring Gulls, finding that first-cycle and control plumages elicit less aggression than definitive plumage.

The paper examines a hybrid zone between two manakin species, finding reduced offspring viability in hybrids, which may explain the zone's long-term stability.

The paper tests for sexually antagonistic coevolution in Drosophila by analyzing female post-mating transcriptomes and finds no evidence of coevolution, instead supporting environmental and female-expressed genetic factors.

This study investigates whether cancer in zebrafish affects offspring sex ratio and survival, finding no effect on sex ratio but higher offspring survival from cancerous females.

The paper investigates genetically based sperm discrimination in primates by examining vaginal immune responses and pH changes after mating with genetically similar males.

This study examines social behavior consistency in cockroaches under varying humidity, finding that groups show higher plasticity variance than individuals.

The paper quantifies subcellular organelle allocation in nematode sperm using electron microscopy to determine if organelle investment correlates with sperm size evolution.

This study investigates clownfish color patterns and finds that specialists and generalists have distinct ecological and adaptive functions linked to their anemone hosts.

The paper uses long-term tracking of male mice to show that social rank is stable and influenced by individual behaviors, with chasing linked to rank negotiation.

The paper investigates the link between male weapon evolution and breeding site type in Neotropical frogs, finding a macroevolutionary correlation and dynamic patterns of weapon gain and loss.

The paper investigates whether extra-genital wounding in male springbok mantises is adaptive by testing its effects on female remating behavior and reproductive outcomes.

The paper develops models to test hypotheses about the relationship between sexual dimorphism and intersex correlation, finding that negative correlations arise only under specific assumptions.

The paper tests how resource allocation affects the honesty of warning signals in moths, finding that diet influences the correlation between signal strength and defense.

This study tracks mate-searching behavior in wild Sydney funnel-web spiders, finding males avoid risky conditions by moving less during rain and preferring warm nights after cool days.

This study examines how larval diets affect adult reproductive strategies and phenotypic plasticity in black soldier flies, revealing sex-specific differences in reproductive investment and mating behaviors.

This study investigates intrinsic reproductive isolation between two ecologically divergent Anolis lizard populations through hybridization experiments, finding evidence of postmating, prezygotic isolation.

The paper tests the Immuno-Competence Handicap Hypothesis by manipulating testosterone in wall lizard colour morphs, showing morph-specific strategies in immune and aggressive responses.

This study shows that kin discrimination in toad tadpoles depends on population genetic structure and rearing environment, with admixed populations showing discrimination only under specific conditions.

This study identifies gestation length as a key driver of brain size and litter size variation in eutherian mammals using phylogenetic path analysis.

The paper examines whether MHC class IIB dissimilarity influences mate choice and divorce in black-legged kittiwakes, finding dissimilar pairing in males but not females and no link to divorce probability.

This study examines behavioural changes in Rana arvalis along a latitudinal gradient, finding reversed behavioural patterns between tadpole and froglet stages.

The paper shows larger fish shoals in the wild better detect predator attacks while maintaining constant false alarms and faster decision times.

The paper investigates the association between DNA methylation and cuticular hydrocarbon variation in stick insects, finding enriched differentially methylated regions in loci linked to these traits.

This study examines multiple signals in female and male gliding lizards, finding that females use diverse signals, including dewlaps, with different functional mechanisms compared to males.

The paper examines how MHC diversity affects fitness differently in male and female banded mongooses, finding higher diversity increases male fitness but decreases female fitness.

This study shows that social environment influences the timing of color pattern changes in anemonefish juveniles through gene expression and apoptosis mechanisms.

The paper shows that social communities of golden-crowned sparrows persist despite high membership turnover due to balanced recruitment and retention of individuals.

This study tracks behavioral plasticity in genetically identical fish clones over four weeks, finding an initial increase in plasticity before it decreases, challenging the expectation of decreasing plasticity in stable environments.