150 likes | 566 Views
KENYA WILDLIFE SERVICE. Conservation of Eastern Bongo: Kenya’s Experience. Dr. Charles Musyoki, PhD, OGW Senior Scientist Department of Species Conservation Programs. The broader context of mountain bongo conservation. Endemic to Kenya’s endangered highland forest
E N D
Conservation of Eastern Bongo: Kenya’s Experience Dr. Charles Musyoki, PhD, OGW Senior Scientist Department of Species Conservation Programs
The broader context of mountain bongo conservation • Endemic to Kenya’s endangered highland forest • Especially susceptible to human encroachment • Symbolic of health of endangered forest ecosystem • Forest ecosystem is a vital water tower, crucial to wellbeing of Kenyan people • Possibly sub-Saharan Africa’s most endangered large mammal • Healthy populations exist in Europe and North America totaling in excess of 500 animals
● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● Bongo conservation history • Aberdare National Park established in 1950 • Bongo exported to Europe & North America in the 70’s & 80’s where captive populations flourished • Wild populations crashed in latter part of 20th century • In early part of 21st century, bongo considered effectively extinct in wild • In 2004,18 bongo repatriated to captive Kenyan herd • Four isolated populations since rediscovered totaling ~100 animals • 2008 classified as critically endangered
Fragmentation of bongo populations • Each area of bongo habitat is effectively an island • 60% of mammalian extinctions have occurred in island populations • Isolation & small population size increases extinction risk • Loss of GD • Reduced fitness, survivorship etc • Susceptibility to catastrophes • Demographic stochasticity • Chance fluctuations in births, deaths, sex ratios
Captive bongo in Kenya • The Mount Kenya Game Ranch Ltd. was established in 1967 • The purpose of the Game Ranch was to create a sanctuary for rare and endangered species and educate the public about conservation • The rare Mountain Bongo was chosen as its logo and work towards its protection and insurance of survival of the species was amongst others commenced immediately. • In 2004, the Mount Kenya Wildlife Conservancy was founded to assist with the wildlife Programs of the Mount Kenya Game Ranch. • Over 300,000 Kenyan students have attended wildlife education programs of the Conservancy and the Foundation free of charge.
Bongo breeding • Captive breeding of bongo at the MKWC/MKGR dates back 40yrs. • The founder herd was 10 individuals (4:6), 5 (2:3) bred successfully as captured in the international studbook. • In January 2004, 13 American institutions donated 18 (4:14) bongos “US bongo” (17 adults and 1 sub adult female.) to supplement a resident herd of 18 (8:10) (adults 12, sub adults 2 and young 4) totalling 36 (12:24). (Adults are 2yrs and above, sub adults 1 to 2 yrs, young are below one year). • A total of 10 from the original US herd managed to breed. • First calving comes at averagely 3yrs which means the start breeding at about 2yrs. They calve after about 9 months. • Presently, there are a total of 68 (31:37) bongos in the facility. Adults 49(20:29) sub adults 8 (4:4) and 11 (7:4) young. • Of these, a total of 24 have US herd lineage.
THE US HERD ADAPTATION • On arrival, the US herd was quarantined for about one year with females sorted into two herds each with one male with breeding recommendation from the PM2000 program. • The first two weeks, 4 bongos were lost to what was later discovered to have been a strain of Theileria called Taurotrogi. Several animals followed in the subsequent weeks. Up to eight animals may have succumbed to the theileria. A total of 13 have since died. Some due to intra-specific aggression/accidents, Euthanasia following reproductive system relapse and some due to e-coli. • Suppressed immune systems due the lengthy duration of non exposure to tick borne diseases • The surviving five animals and the offspring are believed to have developed resistance today.
CONDITIONING FOR RELEASE PROTOCOL • After weaning, animals are moved out to a 100 acre piece of wilderness area an extension of the mountain forest along Nanyuki River a typical bongo habitat within the breeding facility. • While in there, • Human contact is kept at minimum and an encounter is made unpleasant. • Commercial feed supplements are gradually withdrawn to encourage dependence on natural browse. • Due to the limited range in the facility, natural browse is foraged from the nearby mount Kenya forest to supplement • We however still supplement their food and mineral requirements depending on availability of natural supply.
Conservation planning for bongo • National bongo conservation task force • National stakeholders workshop • Vision • Goal • Strategic objectives • Activities