Table of Content

07 July 2008, Volume 21 Issue 1

Previous Issue    Next Issue

For Selected:

Download Citations EndNote Ris BibTeX

Toggle Thumbnails

Select

SURVEY ON AMUR TIGERS IN JILIN PROVINCE

LI Tong,JlANG Jinsong,WU Zhigang,HAN Xiaodong,WU Jingcai,YANG Xingjia

2001, 21(1):  1-6. 

Asbtract ( )   PDF (160KB) ( )  

Related Articles | Metrics

Eight year's field survey ascertains that the seven to nine Amur tigers (Panther tiger altaica) distribute over three areas in Jilin Province. Three to five tigers distribute over Dalongling area, one over Haerbaling and three over Zhangguangcailing area. The suitable habitats for Amur tigers are hills with middle-aged, mixed forest dominated by oak, with the altitude of 800 to 1100 meters where human population density is 15 individuals km², and the density of prey including wild boar, roe deer and red deer is 2.5 individuals km².

Select

DAILY ACTIVITY RHYTHM AND TIME BUDGET OF GOLDEN TAKIN IN SPRING AND SUMMER

ZENG Zhigao,SONG Yanling

2001, 21(1):  7-13. 

Asbtract ( )   PDF (236KB) ( )  

Related Articles | Metrics

Daily active rhythm of four radio-collared golden takins (Budorcas taxicolor bedfordi) had been studied by monitoring each individual at 10 minute interval for more than 3 continuous days in each months at Foping Nature Reserve, Shaanxi Province from April to August in 1996. The activities of feeding standing and walking were accounted 69.95±11.06% for each 24 hours (n=40), and 76.77% of the activities were recorded in the period of sun raising to sun setting. Three active peaks were found in 06: 00-08: 00, 10: 00-12: 00, 18: 00-20: 00, during which takins were observed feeding in the field. In the night takins spend most time at rest, but one active peak was more likely to record in the midnight of 0: 00-1: 00. The daily active rhythm of takin could be affected by climate factors such as the intensity of sunshine temperature and raining etc. Takins were engaged in busily feeding in the morning from 06: 00 to 07: 00 and in the evening of 18: 30-19: 30. At those time period more than 90% of the active signals were recorded for the four radio-collared animals. The activity rate of radio-collared animals were much lower in the hard raining days. There were difference in active rhythm and time budget between individuals in different ages among the four radio-collared takins.

Select

MORPHOLOGICAL AND STRUCTURAL FEATURES OF THE DIGESTIVE TRACTS OF MONGOLIAN GAZELLE

MA Jianzhang,LI Junsheng,JIANG Zhaowen,WANG Wen

2001, 21(1):  14-22. 

Asbtract ( )   PDF (281KB) ( )  

Related Articles | Metrics

Fifty one digestive tracts of Mongolian gazelle (Procapra gutturosa) were studied. The relative weights of parotid glands to body weight account for 1.035 (g /kg). The total tissue weights ranged from 2.74% to 2.89% of body weight. Rumens were heaviest representing from 72% to 76% of the total stomach, followed by reticulums (9%-10%), abomasums (8%-9%) and omasums (5%-6%). Weights of rumens were directly proportional to body weights and weights of other stomach compartments were inversely related to body weights. The surface enlargement factor (SEF) was 8.52. The papilla density was 89. The length ratio of total intestine to body length was 17.8. The relative weights of total intestine with contents to body weights was 4.96%. Mongolian gazelle was of a "mixed feeder" judged by its morphological and structural features of its digestive tracts.

Select

DYNAMICS OF THE RODENT COMMUNITY IN CROPLAND OF THE WESTERN SICHUAN PLAIN: INTERANNUAL FLUCTUATIONS AND SEASONAL FLUCTUATIONS

DAI Yinggui,YANG Yuemin,CAl Hongxia,ZENG Zongyong,LUO Mingshu,LIANG Junshu SONG Zhiming

2001, 21(1):  23-34. 

Asbtract ( )   PDF (332KB) ( )  

Related Articles | Metrics

The time series of the 5 variables,including number of species, joint population density, biomass, Shannon index and Simpson index of species diversity of the rodent community, which was composed of 487 individuals of 8 species of 4 genera of Muridae in cropland of the Western Sichuan Plain from 1989 through 1995 are presented for studying the dynamics of the rodent community in the cropland by mark-recapture. Then, both interannual and seasonal fluctuations of the time series of these variables are analyzed and compared. Finally, dynamics of the rodent community in the 7 years are smmarized. The rodent community was concluded as the following: 1) all of the 5 variables fluctuated interannually and seasonally during the 7 years; 2) all of the 8 species of rodents never occurred in the rodent community in the same month with the maximum of number of species 5 and the minimum 1; 3) the seasonal fluctuations of the 5 variables were greater than their interannual fluctuations, respectively, peaked from 1 to 3 in a year; 4) each of the 5 variables had its maximum only in some summers during the 7 years but had its minimum in some winters or springs and sometimes even in some summers; 5) none of the 5 variables showed remarkable seasonality; 6) the seasonal fluctuations of the proportions of the population density and biomass of the dominant species (Rattus nitidus) respectively in the joint population density and biomass of the rodent community were greater than its interannual fluctuations, and both the interannual and seasonal fluctuations of the population density of the dominant species (Rattus nitidus) were much similar to those of joint population density and biomass of the rodent community.

Select

EFFECT OF BURIAL ON ACORN SURVIVAL AND SEEDLING RECRUITMENT OF LIAODONG OAK (QUERCUS LIAOTUNGENSIS) UNDER RODENT PREDATION

ZHANG Zhibin,WANG Fusheng

2001, 21(1):  35-43. 

Asbtract ( )   PDF (367KB) ( )  

Related Articles | Metrics

Liaodong oak (Q. liaotungensis) forest is the zonal typical vegetation in maintains of Beijing, China. Prior observation indicated that rodents might be involved in acorn predation and then affected oak regeneration. This study aims to investigate three questions: (1) what kind of rodent species attributed acorn disappearance of Liaodong oak? (2) can burial reduce acorn predation by rodents and improve seedling recruitment of Liaodong oak? (3) will ground vegetation affect seedling recruitment rate of the oak? In September of 1996, 37 plots of 5 sites were located for acorn placement test. Ten acorns were placed on the soil surface of each plot. Acorns on soil surface were checked 1, 10, 20 days later after acorn placement. Wooden snare traps baited with oak acorns and peanuts were used for identifying key rodent species of removing the acorns. Five sites were located for burying 50 acorns at 5 cm in soil within one square meters at each site. Seedling numbers and seedling height were measured next year. Three rodent species (i. e. Apodeinus speciosus, Rattus confucian and A. agrarius) were found to consume the acorns and the proportion of acorn consumed was related to their abundance. Among the 370 acorns which were placed on soil surface in 37 plots of 5 sites 15.1% of them disappeared next day, 78.1% disappeared 10 days later and all of them disappeared 20 days later. Among 250 acorns buried in five sites 11.2% of them sprouted out with an average height of 7.8 cm. Therefore, burial can effectively reduce acorn predation by rodents. The seedling recruitment rates in five sites tended to negatively correlate with grass cover and height. It was suggested that direct seeding can facilitate oak reforestation.

Select

ANALYSIS ON THE COLONY STRUCTURE OF MICROTIOUS FORTIS IN DIFFERENT BREEDING SEASON IN DONGTING LAKE REGION

QUO Cong,WANG Yong,ZHANG Meiwen,CHEN Anguo

2001, 21(1):  44-49. 

Asbtract ( )   PDF (166KB) ( )  

Related Articles | Metrics

The seasonal changes of Dongting Lakes' water level force M. fortis move between the lake beach and the rice fields. The animals inhabit on the lake beach in the main breeding season from October to May. The animals nest individually during this stage. However, the aggression of the animals reduce and nest very closely when they inhabit on the rice fields in summer. These changes adapt the environment of Dongting Lake region. The lake beach, less interspecific competition, less predators and good food resource is suitable for the animals. Therefore, when the animals inhabit on the lake beach, the males move for finding females, and females mate with several males and rear young alone, could maximize their breeding success. Because of the frequent activities of humans, interspecific competitions, predator activities and relative narrow habitat survival is the main problem for the animals when they inhabit in the rice fields. To nest closely at this stage could reduce the demand of habitat. According to the observation both from fields and laboratory, we consider that there is less possibility of monogamy for the animals in main breeding season.

Select

SOCIAL ORGANIZATION OF MANDARIN VOLES IN BURROW SYSTEM

TAI Fadao,WANG Tingzheng

2001, 21(1):  50-56. 

Asbtract ( )   PDF (222KB) ( )  

Related Articles | Metrics

The colonial structure of mandarin voles (Microtus mandarinus) varies from month to month. Mandarin vole had a large family size which consisted of several adult males and females and many offsprings in April and October. From June to September it consisted of one adult male and one adult female and had offsprings or not. So social organization of mandarin voles consisted of communal groups male-female pairs and single female breeding unit. Male-female pairs displayed behavioral traits associated with monogamy, including sharing a common nest and home range. In April and October, there are more communal groups (60%, 61.5 %). In June and September, there are more male-female pairs (80%, 75%). The percents of communal groups were positively correlated with the densities of the voles and the percents of male-female pairs were negatively correlated with the densities of the voles. The burrow index (number of voles /number of burrows) were different in different seasons. The burrow index were positively correlated with the density of voles. So it infers that the changes of the colonial structure of voles were caused mainly by reproduction and joining of new members.

Select

EFFECTS OF PHOTOPERIODS ON THE PERIPUBERTAL REPRODUCTIVE DEVELOPMENT AND THE PATTERNS OF MATERIAL TRANSFER OF PHOTEPERIODIC INFORMATION IN ROOT VOLES (MICROTUS OECONOMUS

LIU Likuan,LIU like,SU Jianping

2001, 21(1):  57-66. 

Asbtract ( )   PDF (316KB) ( )  

Related Articles | Metrics

The effects of photoperiodic information on peripubertal reproductive development of root voles (Microtus oeconomus), are determined by using a factorial experiment which is designed from long and short day light levels in the gestational, lactational and postweaning periods and the juvenile responsive patterns to the maternally derived photoperiodic information is studied. The specific hypotheses tested are that photoperiodic information can stimulate and regulate the reproductive development and growth of root voles; and that the transfer of photoperiodic information exists between the female parents and their offsprings. The results from eight experimental treatments general supported the above mentioned hypotheses, and indicated that the transfer of photoperiodic information indeed exists between the female parents and their offsprings. The reproductive development of male offspring is influenced not only by the maternally derived photoperiodic information but also by the environmental photoperiod during postweaning period; the reproductive development of female offspring is particularly influenced by the transfer of photoperiodic information of gestational and/or lactational period before weaning. That is, the maternally derived photoperiodic information is the main information which affects the reproductive development of the female offspring.

Select

ESTIMATING THE GROUP REFORMATIVE RATE FOR SOCIAL RODENT SPECIES

WAN Xinrong,ZHONG Wenqin,WANG Mengjun

2001, 21(1):  67-72. 

Asbtract ( )   PDF (176KB) ( )  

Related Articles | Metrics

A new procedure is proposed to estimate the group reformative rate of the group unit (s) for the social rodent species. The probability that two animals taken randomly from a group come from different original groups is used as a measurement of group reformative rate at a census. Moreover the expected group informative rate is also derived as an index to evaluate the preference during the regrouping period. An illustration of how to apply this method to estimate the group reformative rate of the communal over-winter nests of Brandt's vole in the typical steppe in Inner Mongolia grassland. Results revealed that the over-winter group reformative rate of this species is very low suggesting that many members of the same over-winter group came from the same family. Furthermore the group reformative rate is much lower than the expected group reformative rate which indicates that the Brandt's vole possess a high preference to select familiar individuals as group members during this period.

Select

THE SEPARATION AND PURIFICATION OF GIANT PANDA'S IMMUNOGLOBULINS IN COLOSTRUM AND SERUM AND THE SERUMAL PREPARATION OF RABBIT ANTI-GIANT PANDA'S IMMUNOGLOBULINS

WANG Chengdong,WANG Qiang,ZHONG Shunlong,ZHANG Zhihe,YU Jianqiu,LI Guanghan,HOU Rong,HE Tingmei

2001, 21(1):  73-75. 

Asbtract ( )   PDF (193KB) ( )  

Related Articles | Metrics

Select

THE POPULATION NICHE OF RHOMBOMYS OPIMUS AND MERIONES MERIDIAN

ZHAO Tianbiao,ZHANG Zhongbin,LI Xinmin,ZHANG Chunfu,WU Jianping,QI Lin

2001, 21(1):  76-79. 

Asbtract ( )   PDF (145KB) ( )  

Related Articles | Metrics