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Corpus Systématique Animale

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Parasite changes and their influence on the body weight of Japanese monkeys ( Macaca fuscata fuscata ) of the Koshima troop

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  • Yoichiro Horii 1
  • Isao Imada 2
  • Takashi Yanagida 2
  • Manpei Usui 2
  • Akio Mori 3
  • 1) Department of Parasitology, Miyazaki Medical College, 889-16, Kiyotake, Miyazaki, Japan
  • 2) Department of Veterinary Medicine, Faculty of Agriculture, Miyazaki University, 880, Miyazaki, Japan
  • 3) Primate Research Institute, Kyoto University, 484, Inuyama, Aichi, Japan

The incidence of eggs in individual feces (percentage of infected animals) and the EPG (eggs per gram of feces) of gastrointestinal nematodes for individually discriminated Japanese monkeys of the Koshima troop were investigated monthly from October 1974 to June 1979. Eggs of four nematode species,Oesophagostomum aculeatum, Trichuris trichiura, Streptopharagus pigmentatus andStrongyloides fülleborni, were frequently found; a few cestode segments ofBertiella spp. were occasionally found.S. fülleborni had a high incidence (100%) in young monkeys, suggesting that its incidence might vary with the monkeys' age. Seasonal changes in the incidence and EPG of each parasite were observed. The monkeys were treated with the anthelmintic thiabendazole once a month from May to July, 1975. Thiabendazole exerted an excellent effect onS. pigmentatus andS. fülleborni, and a lesser effect onO. aculeatum. Decreases in parasites caused by either seasonal changes and/or the anthelmintic treatment did not produce an increase in the monkeys' body weight, indicating that body weight is more affected by food intake or some factors other than parasitic infections. It is suggested that field anthelmintic treatment on wild monkeys should be conducted with the greatest care, since reinfection can occur immediately after such treatment.

Catégories Science-Metrix
  • 1 - health sciences
  • 2 - psychology & cognitive sciences
  • 3 - behavioral science & comparative psychology
Catégories INIST
  • 1 - sciences appliquees, technologies et medecines
  • 2 - sciences biologiques et medicales
  • 3 - sciences biologiques fondamentales et appliquees. psychologie
  • 4 - ethologie animale
Catégories Scopus
  • 1 - Life Sciences ; 2 - Agricultural and Biological Sciences ; 3 - Animal Science and Zoology
Catégories WoS
  • 1 - science ; 2 - zoology
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