Causes of natal dispersal and emigration and their effects on harem formation in Misaki feral horses

Equine Veterinary Journal
Y KasedaA M Khalil

Abstract

Misaki feral horses were separated into 2 herds and the difference between dispersal from natal group (natal dispersal) and dispersal from natal area (natal emigration) was studied. The causes of dispersal and emigration and their effects on harem formation were studied 1979-1994. The number of horses ranged from 73 (mature males: 8, mature females: 26, young males: 8, young females: 3, colt foals: 6, filly foals: 10 and geldings: 12) in 1979 and 86 (mature males: 14, mature females: 37, young males: 12, young females: 7, colt foals: 5, filly foals: 7 and geldings: 4) in 1994 when the present study ended. All 29 males which survived to age 4 years and 58 females which survived to age 3 years left their natal or mother groups at age one to 3. Seventeen of 22 dispersing males and 29 of 39 dispersing females left their natal groups around the birth of their siblings and significant correlations were found between natal dispersal and birth of a sibling. The number of emigrating young males correlated negatively and significantly with the total number of young males in another herd and the number of emigrating young females correlated positively and significantly with the total number of young females in the natal herd. All 13 emigr...Continue Reading

References

Aug 1, 1976·Zeitschrift für Tierpsychologie·J D Feist, D R McCullough
Dec 1, 1986·The Veterinary Clinics of North America. Equine Practice·R R Keiper
Sep 1, 1995·Equine Veterinary Journal·Y KasedaH Ogawa

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Citations

Jan 16, 2016·Human Nature : an Interdisciplinary Biosocial Perspective·Elizabeth Cashdan, Steven J C Gaulin
Jul 29, 1999·The Journal of Veterinary Medical Science·A M Khalil, N Murakami
Sep 2, 2009·The Journal of Veterinary Medical Science·Ashraf M KhalilNoboru Murakami
Jun 30, 2015·Future Microbiology·Victoire de Lastours, Bruno Fantin
Sep 10, 2020·Animals : an Open Access Journal From MDPI·Masaki Shimada, Nae Suzuki

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