• Publications
  • Influence
Role assessment, reserve strategy, and acquisition of information in asymmetric animal conflicts
It was formerly argued that alternative evolutionarily stable strategies (ESSs) are possible for animal contests characterized by some asymmetry that can be perceived with perfect accuracy. WhereExpand
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affiliative behavior Behavior that is supportive and brings individuals together. agonistic behavior Behavior that is aggressive, threatening, combative, and submissive. altruism Behavior thatExpand
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Mortality risk of spatial positions in animal groups: The danger of being in the front
We modified Hamilton's (1971) selfish herd model by introducing directional movement to the prey groups and the predators. The consequences of this modification with regards to differential predationExpand
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Network metrics reveal differences in social organization between two fission–fusion species, Grevy’s zebra and onager
For species in which group membership frequently changes, it has been a challenge to characterize variation in individual interactions and social structure. Quantifying this variation is necessary toExpand
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DNA metabarcoding illuminates dietary niche partitioning by African large herbivores
Significance Theory holds that sympatric large mammalian herbivores (LMH) must partition food resources to coexist, and traditional frameworks categorize LMH along a spectrum from grass-eatingExpand
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Social relationships and reproductive state influence leadership roles in movements of plains zebra, Equus burchellii
In animal groups, collective movements emerge from individual interactions. Biologists seek to identify how characteristics of actors in these groups, and their relationships, influence theExpand
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The Dynamics of Herds: From Individuals to Aggregations
Abstract The dynamic behavior of small herds is investigated by means of simulations of two-dimensional discrete-stochastic models. An individual-based approach is used to relate collective behaviorExpand
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Leadership in fish shoals
Leadership is not an inherent quality of animal groups that show directional locomotion. However, there are other factors that may be responsible for the occurrence of leadership in fish shoals, suchExpand
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Sperm competition in the water strider, Gerris remigis
Abstract Sperm competition occurs in the giant water strider. In serial mating experiments using normal and sterilized males, the last male to mate was able to displace, on average, 65% of the spermExpand
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The Mechanisms of Filter Feeding: Some Theoretical Considerations
We enumerate the five basic mechanisms by which any biological or manmade filter can remove particles from a fluid. These mechanisms are: (1) direct interception, (2) inertial impaction, (3)Expand
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