Mauremys iversoni

Abstract: Morphometric variation in populations of East Asian Mauremys was evaluated with discriminant function and cluster analysis. M. iversoni is the most distinctive member of the group, although specimens from Guizhou Prov., China originally assigned to that taxon may represent an undescribed species. Mauremys (formerly Annamemys) annamensis is a morphometrically distinct species. Annamemys grochovskiae is a synonym of M. mutica (not M. annamensis). Mauremys guangxiensis is apparently a composite species; the holotype is apparently M. iversoni and the paratype is M. mutica

Abstract: A new species of batagurine emydid turtle, Mauremys iversoni, based upon a series of 29 specimens from the Provinces of Fujian and Guizhou, People's Republic of China, is described. This species is most similar to Mauremys mutica, from which it differs in several morphological features and in coloration and pattern. Mauremys mutica and M. iversoni are reported to be sympatric near Nanping, Fujian.

Abstract: The phylogenies of Mauremys guangxiensis and Mauremys iversoni have been disputed for several years.To analyze the molecular phylogenies of M.guangxiensis,M.iversoni via detecting the partial mitochondrial ND4 gene and nuclear c-mos gene sequences of few M.guangxiensis,M.iversoni and M.mutica,and by combining the ND4 and c-mos gene sequences of other Mauremys species downloaded from GenBank,we inferred that from ND4 gene,the clades of M.guangxiensis were a branch of the clades of M.annamensis in NJ,MP and BI tree;the genetic distances was ranged 0.002~0.017 in each of these two species,and was ranged 0.000~0.035 between the two species.The later data was much less than that of the other species in the same genus(0.056~0.109),all above data indicated that M.guangxiensis was probably a synonymy with M.annamensis,or a subspecies of M.annamensis.Shown in NJ,MP and BI tree,M.iversoni located M.mutica proximally;the genetic distance between these two species was ranged 0.020~0.035,respectively,which were less than that of the other species in the same genus,while were much more than that of the other species in the same genus significantly;those data support that the relationship between M.iversoni and M.mutica is neither a species nor 2 different species;The locations of M.reevesii,M.nigricans,M.sinensis and M.annamensis shown in NJ,MP and BI tree suppoted that the genus of Chinemys,Ocadia and Annamemys should be merged into the genus Mauremys.Inferred from c-mos gene,there is no genetic distances among all Mauremys species,and no species can be distinguished in their NJ tree or MP tree;while according to the molecular phylogenies of genera or families,data of c-mos gene are credible evidences,and is consistent with the data of mitochondrial ND4 gene.

Abstract: Yellow pond turtle,Mauremys mutica and three-striped box turtle,Cuora trifasciata,is classified to Bataguridae,Mauremys and Cuora,respectively,they distribute in Southern China The two turtles have been artificially-propagated successfully and were cultivated in a small-scale Mauremys iversoni is a new strain nominated by Pritchard in 1991,but in 2001,two research groups leading by Parham and Wink proved that Mauremys iversoni was not a species With different methods,they found that Mauremys iversoni may be the hybrid of yellow pond turtle and three-striped box turtle In this article,the hybrid of M mutica (♀) × C trifasciata (♂) was acquired successfully,which indicated the hybrid between genus of Mauremys and Cuora was feasible But the rate of fecundation and hatching of M mutica (♀) × C trifasciata (♂) were lower than M mutica (♀) ×M mutica (♂) The veins on carapace,the dark patch on plastron,the forepart form and origination of gular scute,the ratio between gular scute width and gular scute seam length,gular scute seam length and humeral scute seam length,femoral scute seam length and anal scute seam length,the skin color of inside of four limbs and tail abdomen of the young hybrid were different from the young M mutica The growth rate of the one year old hybrid was faster than M mutica in the same culture condition In morphology of hybrid,the color of calvarias was thin brown-yellow,and it has two black lines behind the eyes,the abdomen of neck was yellow; the carapace was brown and its plastron was thin yellow,each scute of plastron has radiated dark patch,the skin color of inside of four limbs and tail abdomen of the hybrid were yellow-brown The analysis of morphologic data within three kinds of turtles indicated that the hybrid was more closed to its mother,M mutica Morphologic discriminant formula of three turtles were obtained,discriminant analysis indicated that there were significant different among three kinds turtles The identification accuracy was 100%(p001) The ratio between second half plastron length,gular scute width,humeral scute seam length,femoral scute seam length,respectively,and carapace length were the highest contributing rate on discriminant analysis,which could be the direct parameter in distinguishing yellow pond turtle,three-striped box turtle and their hybrid The study would be benefit to identification of hybrid,turtle breeding and aquaculture