笼养间蜂猴的繁殖

1989年至今，对15只（10，5）成年间蜂猴在人工饲养条件下的繁殖进行观察，结果为：1．间蜂猴的繁殖有明显的季节性；2．发情周期为49．67d(SD=1.25)，在此期间，雌性外生殖器红肿，变大；雄性阴囊胀大；3．交配以背腹相贴为主；4．怀孕期为188d;5．哺乳期为108d(SD=4.12)；6．均为一胎二仔。

REPRODUCTION OF SLOW LORIS(Nycticebus intermedius ) IN CAPTIVITY

Since November, 1989 a study about the reproduction of Middle Slow Loris ( Nycticebus intermedius) in captivity has been made. All the adults were wildly born. During the summer and fall they were housed in a cage. The size of the cage was 10 square meters and the height of it was 3.5 meters. During the winter and spring they were housed in a room. So far 14 infants were born. The paper presents the main results of the study. Nycticebus intermedius was a highly seasonal breeder. Estrous cycle was from July to September every year. The duration of the cycle was about 49.67 days (SD = 1.25). During the estrous cycle, the vaginae of females became swelling and reddening; the testes of males became bigger (see table 1, 2 and figure 1) and the scrotal sacs acquired reticulated pigmentation, glans penises became purple red. During non-breeding season glans penises were pink. Seven copulatory bouts were observed, they occurred during 20: 10-22: 50, and lasted from 30 seconds to 2 minutes 57 seconds. In six of them, the females suspended themselves upside down with their two hands and two feet beneath the top of cage, the males mounted the females dorsoventrally. Only one copulatory bout was that a female suspended itself with two hands and a foot, a male mounted it ventra-ventrally. Gestation length was about 188 days. All parturition occurred in spring (from February to March) . Litter size was two. The body weight of newborn babies were about 17.57 g (SD = 2.06) . Lactation length was about 108 days (SD = 4.12) .