Laboratory observation of siblicide with hatching asynchrony in an insect with parental provisioning

Kyoko Ento, Kunio Araya, Shin ichi Kudo

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We report laboratory observation of siblicide with hatching asynchrony in the passalid beetle Cylindrocaulus patalis. Parents construct a breeding gallery in rotten logs and show complex care of offspring, including provisioning. Clutch sizes are extremely small, and only a single offspring is raised in a colony in each breeding season. We introduced field-collected colonies into an artificial gallery and recorded the behaviour of colony members. Eggs hatched at 2- to 10-day intervals in each colony. Fatal fighting invariably occurred among the larvae soon after hatching of the junior larva, and a single larva, usually the senior one, survived.

Original languageEnglish
Pages (from-to)405-407
Number of pages3
JournalJournal of Ethology
Issue number2
Publication statusPublished - 2010


All Science Journal Classification (ASJC) codes

  • Animal Science and Zoology
  • Ecology, Evolution, Behavior and Systematics

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