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Full-Text Articles in Life Sciences
Aggressive Motivation In The Midas Cichlid: Evidence For Behavioral Efference, Alan B. Bond
Aggressive Motivation In The Midas Cichlid: Evidence For Behavioral Efference, Alan B. Bond
Papers in Behavior in Biological Sciences
Behavioral Efference is a hypothetical positive feedback from the performance of an aggressive display that augments the level of aggressive motivation. The hypothesis was proposed (Bond, 1989) to account for the occurrence of truthful communication during aggressive encounters, even in the face of a presumed selective pressure in favor of deceit (Maynard Smith, 1984). Evidence of Behavioral Efference was sought in an experimental study of adult Midas cichlids Cichlasoma citrinellum, in which subjects responded aggressively to varying sizes of dummy fish. Before and after each aggression trial, the level of aggressive motivation was estimated from the intensity of the subject’s …
Population Estimates Of Kea In Arthur's Pass National Park, Alan B. Bond, Judy Diamond
Population Estimates Of Kea In Arthur's Pass National Park, Alan B. Bond, Judy Diamond
Papers in Behavior in Biological Sciences
The population dynamics of a local group of Kea (Nestor notabilis) was studied at a refuse dump in Arthur's Pass National Park over the course of three successive summers. The mean number of buds that foraged at the dump during the summer was estimated as 20 juveniles, 10 subadults, and 36 adults. An average of 11% of these birds were females. The number of adults was quite stable across years. The total population of Kea in this area was estimated to be between 88 and 119, or in the order of 0.018 to 0.040 buds per hectare. Mortality …