Geology topics

E.K. Peterson

Publications and source records attributed to E.K. Peterson.

2 recordsLinked to original sources

USGS1985

Deposition of anal-sac secretions by captive wolves (Canis lupus)

Deposition of anal-sac secretions by captive wolves was investigated by a labelling technique using protein-bound iodine 125 and food dye. Wolves deposited secretions on some but not all scats. Adult males, especially the alpha male, deposited anal-sac secretions more frequently while defecating than did females or juveniles. Secretions sometimes also were deposited independently of defecation, suggesting a dual role in communication by these substances.

Journal of Mammalogy↗

USGS1981

Olfactory pedunculotomy induced anosmia in the wolf (Canis lupus)

A procedure for the surgical induction of anosmia in the wolf is described. Six wolves (4 altered and 2 sham) and one mongrel dog were operated; four wolves and the dog were bilaterally pedunculotomized, and two wolves were sham operated. Behavioral tests with the wolves confirmed that they were anosmic, and anatomical verification in the dog showed that the olfactory peduncle (corresponds to the human olfactory tract) was completely sectioned. Use of this procedure will make possible tests of the role of olfaction in these animals.

Physiology & Behavior↗