Jae Chun Choe

Introduction 1. Are behavioural classifications blinders to natural variation? 2. Life beneath silk walls: a review of the primitively social Embiidina 3. Post-ovulation parental investment and parental care in cockroaches 4. The spectrum of eusociality in termites 5. Maternal care in the Hemiptera: ancestry, alternatives and current adaptive value 6. Evolution of parental care in the giant water bugs (Heteroptera: Bolostomatidae) 7. The evolution of sociality in aphids: a clone's eye view 8. Ec

Insects and arachnids display the most impressive diversity of mating and social behaviour among all animals. This book investigates sexual competition in these groups, and the variety of ways in which males and females pursue, persuade, manipulate, control and help one another, enabling us to gain a better understanding of how conflicts and confluences of interest evolve together. Each chapter provides a comprehensive review of mating systems in particular insect and arachnid groups, discusses

Geographic variations in call characters as well as mitochondrial DNA sequences were largely stratified by geographic factors such as distance and barriers in Korean populations of H. japonica. Although we did not detect effects of habitat or interspecific interaction, some other selective factors such as sexual selection might still be operating on call characters in conjunction with restricted gene flow.

Altitude influences forest structure and food abundance and distribution, which in turn affect primate feeding and ranging patterns. Javan gibbons (Hylobates moloch) are endemic to forests spanning a broad range of altitudes on Java, Indonesia. Most information about Javan gibbon behavior comes from studies in lowland forests, while the vast majority of wild gibbons remaining inhabit hill and lower montane forests. We studied the diets, activity patterns, and ranging behavior of three gibbon gro

When females search for mates and their perceived risk of predation increases, they less often express preferences for males that use conspicuous courtship signals, relaxing sexual selection on production of these signals. Here, we report an apparent exception to this general pattern. Courting male fiddler crabs Uca beebei sometimes build pillars of mud at the openings to their burrows in which crabs mate. Females visit several males before they choose a mate by staying and breeding in their bur

Predation is generally thought to constrain sexual selection by female choice and limit the evolution of conspicuous sexual signals. Under high predation risk, females usually become less choosy, because they reduce their exposure to their predators by reducing the extent of their mate searching. However, predation need not weaken sexual selection if, under high predation risk, females exhibit stronger preferences for males that use conspicuous signals that help females avoid their predators. We

Two sympatric species of Zoraptera in central America, Zorotypus barberi Gurney and Z. gurneyi Choe, exhibit distinctively divergent mating behaviors before, during, and after copulations. The mating system of Z. barberi is essentially polygynandry in which both males and females mate with multiple mates. Males of Z. barberi perform elaborate precopulatory courtship involving courtship gifts, provide extra stimulation during copulation, and continue to court for additional copulations. Females a

The population structure and distribution patterns of ectoparasitic arthropods on four species of Alaskan seabirds (common murre (Uria aalge), thick-billed murre (Uria lomvia), black-legged kittiwake (Rissa tridactyla), and red-legged kittiwake (Rissa brevirostris)) were studied and interspecific interactions were examined. In most ectoparasite populations on murres and kittiwakes, females predominated. This pattern may be attributable to differences in activity, behavior, and mortality between

Males of the common freshwater goby Rhinogobius brunneus , which provide paternal care, have a first dorsal fin (FDF) that is markedly longer and more elaborate in colour and shape than that of females. Females showed a clear preference for males with longer FDFs, but mated randomly with respect to male body size ( L s ) and nest size. They were individually consistent in their choice of mates, and the strength of preference increased with inter‐male differences in FDF length. During courtship,

The colony founding phase is a unique period in the life cycle of social insects in which young reproductives have an option to be either solitary or social. We review the literature on pleometrosis in ants with a special emphasis on the founding processes by Azteca constructor and A. xanthacroa nesting in Cecropia trees. Azteca colonies are established in three distinct ways: by single queens, by single–species groups of queens, and by mixed–species groups. Pleometrotic colonies of both single