Life Sciences Commons^™

Observations On Why Mongrels May Make Effective Livestock Protecting Dogs, R. P. Coppinger, C. K. Smith, L. Miller

Charles Kay Smith

In Canid ontogeny from puppies to adults there is a very young phase before any species-specific predatory behavior has been expressed. This phase has been ontogenetically selected as a breed of neotenic adults which are ideal for protecting sheep. At a more advanced phase of canid ontogeny older puppies have begun to express separate pieces of species-specific predatory behavior, such as eye, stalk and chase but not the complete adult sequence so that crush bite kill and consume is as yet unexpressed. This intermediate phase was also ontogenetically selected as a breed such as border collies used in Britain to …

Influence Of Dietary Cyanide On Immunoglobulin And Thiocyanate Levels In The Serum Of Liberian Adults, Fatimah Linda Collier Jackson

Fatimah Linda Collier Jackson

Multiple Paternity In A Territorial Passerine: The Bobolink, Thomas A. Gavin, Eric K. Bollinger

Eric K. Bollinger

Electrophoretic and behavioral evidence corroborate the conclusion that Bobolink (Dolichonyx oryzivorus) females occasionally copulate with more than one male, which results in the insemination of a single clutch of eggs by those males. In 2 of 12 families from which blood samples were obtained from the mother, the putative father, and the nestlings, at least 2 males were responsible for fertilization of the clutch. We believe this is only the second bird species in which multiple paternity has been documented conclusively in the wild. Our speculation that it may not be uncommon leads to a caution for evolutionary biologists who …

Cyperus Flavicomus, The Correct Name For Cyperus Albomarginatus, Gordon C. Tucker

Gordon C. Tucker

The correct name for Cyperus albomarginatus, a pantropical and warm-temperate sedge, is shown to be C. jlavicomus Michaux.