Ma Guangzhi

Bio: Ma Guangzhi is an academic researcher from South China Normal University. The author has contributed to research in topics: Manis & Pangolin. The author has an hindex of 3, co-authored 4 publications receiving 16 citations.

Physical measurement and compariosn for two species of Pangolin

Abstract: There are 7 species of pangolin in the world. This paper dealt with the measurement of some morphology indices in Manis petadactyla and Manis javanica. Measured variables included the body weight, the total body length, the length of head and body, the length of tail, the length of protruding rim of external ear, the length of hind feet, the length of middle claws of fore feet, the length of middle claws of hind feet, the number of rows of scales round mid-body, the number of single flank scales of edge tail. All variables measured were compared respectively between this 2 species. The results indicated that: (1) there were no significant differences in body weight and length of hind feet between this 2 species, but differences in the other variables were extremely significant. (2) The ratio of the length of middle claws of hind feet and fore feet in Manis pentadactyla was less than 1/2 (n=48), while Manis javanica was more than 1/2 (n=15); the length of protruding rim of external ear in Manis pentadactyla was over 10 mm (n=38), whereas Manis javanica was under 10 mm (n=13); the number of single flank scales of edge tail in Manis pentadactyla was not beyond 21 (n=65), and Manis javanica exceeded 21 (n=14). So the ratio of the length of middle claws of hind feet and fore feet, the length of protruding rim of external ear, and the number of single flank scales of edge tail should be regard as distinctive features and taxonomic indices between this 2 species. (3) The relationships between body weight (Y) and the total body length, the length of head and body, the length of tail (X) were positive correlation, and satisfied relation equation Y=aX~b.

Age structure and parasites of Malayan pangolin (Manis javanica).

Abstract: Fifty one living Malayan pangolins(Manis javanica) were obtained from Zhanjiang Forestry Bureau of Guangdong on August 23,2001The age structure and parasites of the animals were analyzed and examinedAccording to the wear degree of their claws,scales and hair,the behavior relationships between mother and baby,and body weight,they were divided into 4 age groups: cub,sub-adult,adult and senior,and were composted of 7(137%),21(412%),19(373%) and 4(78%) individuals respectivelySex ratio was 1∶097(♀∶♂)The epibiont and endoparasite in these pangolins were surveyed by naked eyes observation and examination of their droppingsOnly one species of tick parasite was found beneath scales of the animals,named as Amblyomma javanese SupinoThe infection rate was 6863%(35/51),but the juveniles were not infectedThe health conditions of infected individuals were poorWe also discussed the ecological security to release this species in China

Survey and discussion on treatment status of food residue of kitchens in Guangdong province.

Abstract: The current status of food residue of kitchens in Guangdong province was investigated and the treatment methods were discussed,to estimate the production of food residue of kitchens in Guangdong province.The problems in treatment status of food reside were pointed out and their countermeasures were proposed.

Endocrine disruptors affect the expression of estrogen receptor genes and proteins in the white cloud mountain minnow Tanichthys albonubes (Teleostei: Cyprinidae)

Abstract: The endocrine disruptor chemicals (EDCs) are ubiquitous in the environment, and it has raised wide public concern because of the dangers of EDCs for living organisms and the environment. In order to comparatively study the effects of EDCs [17-α-ethinylestradiol (EE2), Bisphenol A (BPA) and Nonylphenol (NP)] on the expression of estrogen receptors (ERs: erα, erβ1, and erβ2) at mRNA and protein level, total 520 adult Tanichthys albonubes were exposed to E2, EE2, BPA and NP with three concentrations respectively: EE2 (1, 5, 25 ng/l), NP (10, 50, 250 μg/l), BPA (100, 500, 2,500 μg/l) for 28 days, E2 (2, 20, 200 ng/l) being as the positive control. After treatment, the brain, eye, gill, heart, liver, gut, kidney, muscle, testis, and ovary were collected, following by the real-time quantitative PCR (RT-qPCR) and western blot methods to detect the expression levels of erα, erβ1, and erβ2 in T.albonubes at mRNA and protein level. Our results showed that high expression of terα (t means T.albonubes), terβ1, and terβ2 were detected in liver, while terβ1 and terβ2 mainly expressed in the liver, intestine, kidney, muscle and testis. EE2, BPA, and NP treatment all up-regulated the expression of terα, terβ1, and terβ2 in the brain, liver, and testis, but with some variations. Similar to mRNA level, both TERα and TERβ were up-regulated by all the EE2, BPA, and NP treatment with dose-dependent effect. In conclusion, the responses of ERs of T.albonubes to the EDCs present measurability and susceptibility, which make it possible for T. albonubes to be an efficient biomarker to monitor and evaluate the pollution of endocrine disrupting chemicals in water environment.

Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES)

Abstract: Elephants, whales, rhinos, tigers... mention CITES, and these and many other species listed in Appendix I immediately come to mind, often with the suggestion of poaching or illegal trade. Species listed in Appendix II and traded legally rarely get into the headlines, yet these represent over 92% of the global CITES trade in wild fauna and flora – and most of the rest is in Appendix-III species. The regulatory provisions for Appendix-II species ensure that trade is not detrimental to their survival, that the specimens were obtained according to the country’s wildlife protection laws and, in the case of living specimens, that risk of injury, damage to heath or cruel treatment during transport is minimized. Away from the headlines, these provisions of Article IV of the Convention provide the basic structure for the main work of CITES.

Captive breeding of pangolins: current status, problems and future prospects

Abstract: Pangolins are unique placental mammals with eight species existing in the world, which have adapted to a highly specialized diet of ants and termites, and are of significance in the control of forest termite disaster. Besides their ecological value, pangolins are extremely important economic animals with the value as medicine and food. At present, illegal hunting and habitat destruction have drastically decreased the wild population of pangolins, pushing them to the edge of extinction. Captive breeding is an important way to protect these species, but because of pangolin's specialized behaviors and high dependence on natural ecosystem, there still exist many technical barriers to successful captive breeding programs. In this paper, based on the literatures and our practical experience, we reviewed the status and existing problems in captive breeding of pangolins, including four aspects, the naturalistic habitat, dietary husbandry, reproduction and disease control. Some recommendations are presented for effective captive breeding and protection of pangolins.

Check list of parasites and bacteria recorded from pangolins (Manis sp.).

Abstract: Sound knowledge on parasite fauna of pangolins is crucial for evaluation of their health status. In the present review, a checklist of 34 genera of parasites and bacteria, including 4 genera of protozoan, 13 genera of helminthes, 8 genera of ticks, 2 genera of mites and 7 genera of bacteria reported from pangolins was compiled and their zoonotic potential were discussed. The aim of this checklist is to underline the information gap and to provide a reference list of parasites and bacteria known for pangolins to assist in their further investigation.