Evaluation of Crosses Between Two Geographic Populations of Native Chinese and Introduced Thai Spotted Ivory Shell,Babylonia areolata, in Southern China

2016 ◽  
Vol 47 (4) ◽  
pp. 544-554 ◽  
Author(s):  
Wengang Lü ◽  
Caihuan Ke ◽  
Jingqiang Fu ◽  
Weiwei You ◽  
Xuan Luo ◽  
...  
Keyword(s):  
Southern China ◽  
Babylonia Areolata ◽  
Geographic Populations

Comparative assessment of the genetic variation in selectively bred generations from two geographic populations of ivory shell (Babylonia areolata )

2016 ◽  
Vol 48 (8) ◽  
pp. 4205-4218 ◽  
Author(s):  
Jingqiang Fu ◽  
Wengang Lü ◽  
Weidong Li ◽  
Minghui Shen ◽  
Xuan Luo ◽  
...  
Keyword(s):  
Genetic Variation ◽  
Comparative Assessment ◽  
Babylonia Areolata ◽  
Geographic Populations

scholarly journals Threats from wildlife trade: The importance of genetic data in safeguarding the endangered Four-eyed Turtle (Sacalia quadriocellata)

2020 ◽  
Vol 41 ◽  
pp. 91-111
Author(s):  
Minh Duc Le ◽  
Timothy E.M. McCormack ◽  
Ha Van Hoang ◽  
Ha Thuy Duong ◽  
Truong Quang Nguyen ◽  
...  
Keyword(s):  
Southern China ◽  
Unknown Origin ◽  
Ex Situ ◽  
Wildlife Trade ◽  
Phylogeographic Structure ◽  
Geographic Patterns ◽  
North Eastern ◽  
Geographic Populations ◽  
Over Exploitation

Wildlife trade has been considered one of the largest threats to biodiversity in Southeast Asia. Many vertebrates, such as pangolins, elephants and turtles have been heavily hunted as a result of high demand from emerging markets in China and other countries in the region. In Vietnam, over-exploitation of turtles over several decades to supply the international trade has extirpated numerous populations and driven several species to the brink of extinction. To reverse this trend, conservation measures, such as re-introduction of confiscated or captive-bred animals to their native habitats, should be implemented to recover severely declined local populations. For species with a complex phylogeographic structure, however, it is crucial to understand geographic patterns of genetically-distinct populations to avoid releasing animals of unknown origin to wrong localities. In this study, we investigate the phylogeographic pattern of the Four-eyed Turtle (Sacalia quadriocellata), a widely traded species, which occurs in southern China, northern and central Laos and much of Vietnam, using samples with known localities and those collected from the local trade. Our range-wide phylogenetic and network study, based on the complete mitochondrial cytochrome b gene, recovered at least three major clades and seven subclades within the species range. Amongst these, two subclades, one from northern Annamites, Vietnam and the other from north-eastern Laos, are newly discovered. The fine scale phylogeographic analysis helped us to assign misidentified sequences from GenBank and those from confiscated animals with unknown origin to well-defined geographic populations. The results highlight the importance of incorporating samples collected from the local trade and the wild in genetic analyses to support both ex-situ and in-situ conservation programmes of highly-threatened species in accordance with the IUCN’s One Plan Approach.

scholarly journals Genetic Differentiation and Clonal Expansion of Chinese Botrytis cinerea Populations from Tomato and Other Crops in China

2020 ◽  
Vol 110 (2) ◽  
pp. 428-439 ◽  
Author(s):  
Yongzhao Diao ◽  
Meredith M. Larsen ◽  
Zhian N. Kamvar ◽  
Can Zhang ◽  
Shuo Li ◽  
...  
Keyword(s):  
Population Structure ◽  
Botrytis Cinerea ◽  
High Frequency ◽  
Southern China ◽  
Geographic Location ◽  
Genotypic Diversity ◽  
Dispersal Distance ◽  
Breeding Programs ◽  
Geographic Populations ◽  
And Control

Botrytis cinerea is an important pathogen of vegetable and fruit crops but little is known about its population structure and genetics in China. We hypothesized that the geographic populations of B. cinerea in China would be genetically differentiated by host, geographic location, and/or year. In this study, we collected 393 B. cinerea isolates representing 28 populations from tomato, cherry, and nectarine from 2006 to 2014 in China. The isolates were analyzed using 14 microsatellite markers, including six new markers that provided more genotyping power than the eight previously published loci. We also investigated the B. cinerea population structure and inferred its mode of reproduction and dispersal based on genotype data. High genotypic diversity was detected in all populations, and clonal reproduction was dominant. Southern China populations harbored more genotypes than northern populations. Differentiation by host plant was evident. Between 2011 and 2012, genotypes changed only slightly among years for Liaoning populations, but they changed substantially among years for the Shanghai and Fujian populations. Clonal dispersal was detected and the farthest dispersal distance was estimated to be about 1,717 km. Two high-frequency genotypes were widely distributed in more than 10 populations and across several years. Our results provide useful, novel information for plant breeding programs and control of B. cinerea in China.

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