Table of Content

20 February 1988, Volume 8 Issue 1

Previous Issue    Next Issue

For Selected:

Download Citations EndNote Ris BibTeX

Toggle Thumbnails

Select

REPRODUCTIVE ENDOCRINOLOGICAL CHANGES DURING THE OESTRUS OF THE FEMALE GIANT PANDA

SHI Shaoqing¹, DONG Lin¹, CHEN Yucun², FENG Dandan³

1988, 8(1):  1-6. 

Asbtract ( )   PDF (504KB) ( )  

Related Articles | Metrics

The pattern of excretion of urinary steroids and the variation of plasma steroids during oestrus in female Giant panda were described, and the biological luteinizing hormone (LH-BIO) change was firstly reported.The urinary estradiol (E₂) levels were increased throughout the oestrus, the peak value was 280.4nmol/mgCr. (76.4ng/mgCr.) which was occured two days before the period of the maximum behavioural cestrus, then it declined to the basal level of pro-oestrus.The urinary E₂ peak was coincident with the peak value of 92.0 IU/mgCr. of the urinary LH-BIO, meanwile, the female Giant panda intimated and mated with the male.The urinary progesterone (P) level was rapidly increased in one day after the urinary E₂ and LH-BIO peaks, and it remained in a high concentration for 6 days, the mean value of P of the luteal phase was statisticly different from that of the pro-oestrus value (p<0.01) . The plasma E₂, LH-BIO and P have shown the similar changes to those in urine,It was demonstrated that the female Giant panda had a normal ovulation during this oestrus.

Select

NOTES ON WHITE-LIPPED DEER (CERVUS ALBIROSTRIS) IN CHINA

CAI Guiquan

1988, 8(1):  7-12. 

Asbtract ( )   PDF (440KB) ( )  

Related Articles | Metrics

In the last ten years, the author has carried out many surveys on the white-lipped deer of Qinghai-Xizang (Tibet) Plateau and its adjacent regions and has collected a wealth of data on this species. In 1984, another investigation had been carried out in one of the main native areas of this deer.These observations show that its distribution range lives between 92.5° to 120° east longitude,29.5° to 38.7° north latitude. This is a social animal, it breeds once a year and each female only gives birth to one young. The adults feed mainly on grasses and sedges.

Select

AN ELECTROPHORETIC ANALYSIS OF THE SERUM PROTEIN IN CERVIDAE-SDS-PAGE

WANG Zongren¹, JIA Fenglan², Massoud Mohomdi³

1988, 8(1):  13-20. 

Asbtract ( )   PDF (1289KB) ( )  

Related Articles | Metrics

The paper reported that SDS-PAGE of serum protein of Cervidae. These deer were Cervus unicolor, Cervus albirostris,Dama dama,Elaphurus davidianus, Cervus elaphus xanthopygus, Cervus elaphus macneilli, Cervus elaphus bactrianus,Cervus nippon nippon, Cervus nippon hortulorum and Capreolus capreolus.They belong to 2 subfamilies,4 genus, 7 species.The results obtained are as follows:There were 53 bands of the serum protein of SDS-PAGE on these deer. The molecu- lar weight were different to each other and were between 1.24-9.5 × 10⁴ dorton. The serum in MERIONES MERIDIANUS and D, dama were separated into 24 components, the number of bands were the lowest. But the serum in C. nippon nippon there were 35 separaated components, the number of bands were the highest. The results of comparison of the bands in different subfamilies different genus, different species and between subspecies showed that:1. In evolution of deer, the changes in serum protein were more strenuous than in Karyotype, but their main trend of the change in evolution was same. The more in lower taxonomical unit,the more there were similar components of serum protein.2. The smallest different of serum protein between genus were Cervus and Dama, secondly, were Cervus and Elaphurus, the largest were between Elaphurus and Dama.3. According to the comparison of the serum protein, the genealogical tree in evolution was from C. unicolor to MERIONES MERIDIANUS to C. elaphus to C. nippon. This was very similar to the order in evolution of karyotypes of deer.4. There were very biggest difference between serum protein of cow and of deer in electrophoretic comparison of the serum protein.

Select

THE RESISTANCE OF BATS TO INTERFERENCE DURING OBSTACLE AVOIDANCE

SUN Xinde, ZHANG Senfu, ZHOU Hua, GU Long, JIANG Qin

1988, 8(1):  21-24. 

Asbtract ( )   PDF (302KB) ( )  

Related Articles | Metrics

The resistance to interference of 30 Leaf-nosed bats, Rhinolophus rouxi was examined as an obstacle avoidance score reached at noise and ultrasonic background, respectively.We found that the ability of obstacle avoidance was not influenced by broadband noise jamming. The abilities of Rhinolophus rouxi to resist ultrasonic interferences have been tested also. The abilities of obstacle avoidance have not been disturbed by the characteristic frequency of the species 85kHz and background frequencies 65kHz, 75kHz, 95kHz, or 105kHz.It is shown that the echolocation system of bats have evolved effective abilities for resisting interferences of background noise and ultrasonic signals in order to detect biologically relevant informations from natural environment.

Select

THE COMMUNITY STRUCTURE OF MYOMORPHA RODENTS IN THE TROPICAL AND SUBTROPICAL MOUNTAINOUS FORESTS IN YUNNAN PROVINCE Ⅰ. SPECIES DIVERSITY, RELATIVE ABUNDANCE, DENSITY AND BIOMASS

WU Delin, DENG Xiangfu

1988, 8(1):  25-32. 

Asbtract ( )   PDF (583KB) ( )  

Related Articles | Metrics

The paper deals with the community structure of myomorpha rodents captured by snap -traps in the tropical mountainous rain forest and the subtropical mountainous evergreen broad-leaved forest. The field work prooeeded in Jinghong County (22°13'N, 100°40'E, 900°m above sea level), in Dec., 1984, and in Jingdong County (24°32'N, 101°02'E, 2400m), from May to June, 1981. The results are as follows:1. There are 6 species in the tropical forest and the capture rate is 3.35% . The relative abundance of dominant species, Rattus niviventer, is 81.18% . In the subtropical forest 8 species are captured. The capture rate is 5.89% and Apodemus draco (73.63%) is the dominant species.2. Average density is 13.21 for 6 species in the tropical forest and 20.25 for 5 species in the subtropical forest. A significant difference between them has been found.3. Average biomass is 711.43 and 530.19 in the tropical forest and the subtropical forest, respectively, without significant difference.4. The distribution of biomass is highly inequable. R. niviventer accounts for 77.37% in the tropical forest and A.draco 70.43% in the subtropical forest.From the results we have studied, it can be distinguished that the marked dominance cf R. niviventer and A.draco in the biomass and relative abundance of myomorpha rodents shows that they are very important in the study of small mammal functions in those ecosystems.

Select

THE FOOD HABITS OF THE ROOF RAT(Rattus rattus slandeni) AND THE ECOLOGICAL SIGNIFICANCE IN THE TROPICAL CULTIVATED BROAD-LEAF MIXED FOREST AT XIAOLIANG

LIAO Chonghui, CHEN Maoqian

1988, 8(1):  33-42. 

Asbtract ( )   PDF (792KB) ( )  

Related Articles | Metrics

The research place is located in west seaboard of Guangdong Province. The roof rats is a natural population. The forest is composed of a lot of plant species. 200 rat boxes have been set on trees within 3 ha. area of centrical range of the cultivated broad-leaf mixed forest. Remaining foods in the boxes have been observed.The food of roof rats consists of 39 species of plants including fruits, nuts, seeds, tree, shrub, vine and herb, and 19 kinds of animals including terrestrial molluscs,vertebrate and a large quantity of insects. The frequency of occurrence of plant food and that of animal food in the rat boxes, are almost equal. The animals become main food in summer and autumn, and the plants become main food in winter and spring. We believe the R.r.slandeni could control insect pest of forest, because it has the ability to catch and feed a lot of insects.

Select

PRELIMINARY STUDIES ON ECOLOGY OF MERIONES MERIDIANUS

LI Zhilin¹, QIN Changyu¹, HAN Jianfang²

1988, 8(1):  43-48. 

Asbtract ( )   PDF (423KB) ( )  

Related Articles | Metrics

This paper deals with some ecological information of Meriones meridianus at Linhe district in Lingwu county. This investigation was carried out monthly during 1984-1985. There are 3 main habitats at this district: Ⅰ, Plain semi-desert grassland;Ⅱ, Lowhills with semi-desert grassland;Ⅲ, Small wasteland between agricultural fields; the investigation area is 270 hectares, the average densities of M. meridianus in the 3 habitats are 0.96/h., 0.59/h., 1.50/h. respectively.Dissected 1455 females and 1368 males, the total sex ratio ( ♀:♂ ) is 1:0.94. There are pregnancy females in all year except in winter (Nov.-Jan.), the pregnancy rates and reproductive indices are higher in May-Sep., highest in July. Almost all testes of adults falling in scrota from April to August.Dissecte 1411 stomaches of M. meridianus, the main food is leaves and stalks in summer, is seeds in other seasons.The ecological life-span is short, about one year. Population age structure is pyramid in shape in summer and autumn, the rate of subadults in population is highest.

Select

A STUDY ON PULMO-CUTANEOUS EVAPORATIVE WATER LOSSES OF THE MONGOLIAN GERBIL AND GOLDEN HAMSTER

XIAO Zenghu¹, SUN Ruyong²

1988, 8(1):  49-54. 

Asbtract ( )   PDF (496KB) ( )  

Related Articles | Metrics

The pulmo-cutaneous evaporative water losses(PEL) of the mongolian gerbil (Meriones unguiculatus) and golden hamster (Mesocricetus auratus) were measured at ambient temperatures of 10℃, 20℃, 30℃ and relative humidities of 0%, 30%, 70%, 100% by the use of an open circuit system. The results are as follows:1. The PEL per unit of body weight are correlated negatively with the body weight of tested animals. For example, at 20℃ and 0% (relative humidity), logE = 1.73214 -0.93668 logW for gerbil, where E is the PEL in mg/g.h, and W is body weight in grams.2. The PEL are increased with the ascent of the ambient temperatures between 10°-30℃, for gerbil logE =-0.54945 + 0.03278Ta(r =0.995), and for golden hamster logE = -0.42446 + 0.02794Ta(r = 0.999).3. The PEL are decreased with the ascent of relative humidities of air, for gerbil E = 1.12516-0.01050% (relative humidity) (r=-0.975), and for golden hamster E = 1.32229-0.00883% (relative humidity) (r =-0.962).4. The PEL of golden hamster are only slightly higher than that of mongolian gerbil at 10° and 20℃, but at 30℃ the PEL of the later become higher.

Select

COMPARISON BETWEEN THE TEMPERATURE PREFERENCE OF MERIONES UNGUICULATUS AND CRICETULUS BARABENSIS

Li Yao¹, SUN Ruyong², WANG Wencheng², JIA Xixi²

1988, 8(1):  55-59. 

Asbtract ( )   PDF (395KB) ( )  

Related Articles | Metrics

This paper reports the temperature preferences about Meriones unguiculatus and Cricetulus barabensis and their comparison between the two rodents.The temperature preference was measured by the automatic recording thermal gradient apparatus.The experiment shows that temperature preference of Meriones unguiculatus is 29.06 ± 0.62℃ and that of Cricetulus barabensis is 26.65±0.64℃. Maybe it is related to the difference of their circadian activity rhythm or the difference of their habitat.The size of the animal's body is an important factor which is related to temperature preference. In the two species, the bigger the body size, the lower the temperature preference is.

Select

LACTATE DEHYDROGENASE ISOENZYME RESPONDS TO HYPOXIA IN PIKA

LIU Guofu, WEN Deqi, HAN Sigeng, HU Xiaomei

1988, 8(1):  60-64. 

Asbtract ( )   PDF (1223KB) ( )  

Related Articles | Metrics

The lactate dehydrogenase(LDH) isoenzymes from heart, liver, kidney and skeletal muscle in the pika (Ochotona curzcniae) were analysed by means of the polyacrylamide gel electrophoresis and the ultraviolet enzymatic determination at a simulated altitude of 5,000m for 15 days. The following conclusions were obtained:1. Pikas were exposed to a simulated altitude of 5,000 m for 15 days. Their changes of M-subunit ratio in crude extract of the heart, liver and kidney were no significance in the electrophoretic isoenzyme patterns of LDH, as compare with those of alt. 2300m.2. The exposure of the pika to simulated altitude oxygen conditions for 15 days resulted in a significant alteration in skeletal muscle LDH isoenzyme patterns. The proportion of M-subunit of LDH increased approximately by 14% from 2,300m to 5,000m altitude.3. Continuous exposure of the pika to a simulated altitude of 5,000 m for 15 days seems to be no effect on the LDH activities of heart, liver, kidney and skeletal muscle (P>0.5).

Select

STUDY ON THE ECOLOGY OF SAND BADGER

ZHENG Shengwu¹, LI Guihui¹, SONG Shiying¹, HAN Yiping¹, MA Zhaoyun²

1988, 8(1):  65-72. 

Asbtract ( )   PDF (631KB) ( )  

Related Articles | Metrics

In 1984-1955, the ecology of Sand badger was observed in Long Xian, Shaanxi province, including habitat type, life habit, food, breeding, molt, natural enemies and parasites. 115 specimens were collected month by month in one year, the length-weight relationship of sand badger may be expressed as follows: ♂: W = 0.00023L^2.65028, ♀: W = 0.00047L^2.53922, W standed for body weight, L standed for body length, a and b were both constants.The sand badger hid by day and come out at night. It lived a solitary existence except in mating period. Its hibernation period was from Nov. to next Feb. or Mar., Apring and May were the mating period,and the next Fab.and Mar.were the parturition period, the breast-feed period was about 4 months then the young began to live a solitary.There were three habitat types of sand badger: forest-bush,farm land and wasteland, mountain grassland.There were two active peaks in day and night, the first peak was 3:00-5:00, the second was 19:00-21:00. Sand badger liked to eat worms, they were Allolbbphora calliginosa, Pheretime hupeiensis, Pheretima diffringens, Drawida japonica (table 2 ).The main natural enemies were wild dog, Panthera pardus, Selenarctos thibetanus and Canis lupus.