Dissertation > Environmental science, safety science > Environmental Quality Assessment and Environmental Monitoring > Analysis and Evaluation of Environmental Quality > General issues > Environmental Impact Assessment

Carrier Rates of Salmonella in the Invasive Species Red-eared Slider (trachemys Scripta Elegans) and the Impact on the Environment

Author ShenLan
Tutor ShiHaiTao;WangRuiPing
School Hainan Normal University,
Course Ecology
Keywords Biological invasions Red-Eared Slider Salmonella Carrier rate
CLC X171;X820.3
Type Master's thesis
Year 2011
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Red-Eared Slider (Trachemys scripta elegans), also known as the red-eared turtle, native to the central United States, the Mississippi River, the species of origin in Europe, Africa, Australia, Asia and the United States other than the successful invasion of the Americas and worldwide. International Conservation Union (IUCN) has been red-eared turtle as 100 of the world's most dangerous invasive species, the species is hardy, easy to raise, colorful, inexpensive, easy to sell, since the twentieth eighties the introduction of China's inland via Hong Kong, the trade of the species throughout all provinces and autonomous regions in China, most parts of China have been found to have a red-eared turtle wild populations. In order to understand the red-eared turtle spread salmonella threat to our native turtle and ecosystems, there is an urgent need for the invasion of the status quo of red-eared turtle to investigate. Carry the status of the investigation of Salmonella in the red-eared turtles and their habitats, biological invasions relevant laws and regulations to provide a scientific basis for the development of prevention and treatment of red-eared turtle. In natural waters (River Nandu), semi-artificial waters (Haikou City, East Lake, Haikou Taurus Lake) and artificial environment (markets, farms, hotels) collected samples of red-eared turtles, cloacal sampling bacterial culture, morphological observations, physiological and biochemical detection, identification serotypes of Salmonella were detected. The results showed that the red-eared turtle Salmonella carriers were: Nandu 51.70% (n = 29), Wanquanhe 49.10% (n = 55), Haikou City, East Lake 55.60% (n = 9), Haikou City, Taurus Lake (n = 9 ) 11.10%, 81.80% of the market (n = 11), farms 62.50% (n = 8), Hotel 100.00% (n = 8), Salmonella carrying rate of 54.26%. The red-eared turtle Salmonella serotypes identified: Nandu samples have two Charlie Salmonella (S.chailey,) the one Newport Salmonella (S.newport,), a Leach Phil was Salmonella (S.litchfield) a of Ci Angwei Salmonella (S.tshiongwe,); the Wanquanhe samples the one Stanley Salmonella (S.stanley,), a mountain of Clifden Castle Salmonella (S.senftenberg,), the other place is not detected in conventional typing Salmonella . The red-eared turtle salmonella high carrier rate and a variety of pathogenic serotypes detected, red-eared turtle through the dissemination of Salmonella directly endanger aquatic ecosystems. Nandu, Wanquan River, Haikou City, East Lake, Lake Taurus free-living red-eared turtle habitat sampling, sampling including China bar-necked turtle (Mauremys sinensis), turtle (Mauremys reevesii), tiger frog (Hoplobatrachus chinenisis), fish , shrimp, snails, and water samples. By the bacterial culture, the PCRinvA gene detection, biochemical identification, serum sub-type, the results displayed in the borders of the red-eared turtle born different sampling category Salmonella carrying rate: China Article neck turtle 35.71% (n = 14), tortoise 7.14% (n = 17), tiger frog 25.00% (n = 12), fish 15.69% (n = 5),, shrimp 15.00% (n = 20), shellfish, 17.24% (n = 29), water samples 25.00% (n = 25). Serotype identification results: the Salmonella paratyphi (S.partyphi), the detection of biological Salmonella can spread salmonella local property biological hazards to human health; water samples Salmonella detection, red-eared turtle may Salmonella propagated to the ecosystem, threatening local biological and human health.

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