In recent years, researches on the competitive ability of Pomacea canaliculata compared with native snail species have primarily focused on factors such as temperature, drought, and starvation.To investigate the response characteristics of P.canaliculata and a common freshwater snail Cipangopaludina chinensis under acid-base stress of water environment in southern China.This study treated P.canaliculata and C.chinensis with different wa-ter pH levels as stress gradients to investigate their survival performance and observe the surface structural chan-ges in the livers and heads of the two snail species using a scanning electron microscopy method.The results showed that both species of snails suffered a certain degree of mortality under the acid and alkaline water stress.The survival rate of P.canaliculata was higher than that of C.chinensis at pH 4.5, 6.5, 8.5, and 10.5, and it had a wider range of acid-base adaptation, but the survival rate of C.chinensis was higher at water pH 2.5 treatment.Meanwhile, the scanning electron microscopy results showed that there were obvious exterior breaks and damages in the head and livers of both species of snails under the acid and alkaline water stress.Damage to the liver and cephalopods of the C.chinensis was more severe.This study indicates that P.canaliculata snails are more acid and alkali tolerant and adaptable than the native snail species, which is one of the important mechanisms for their greater invasiveness.
Pomacea canaliculataCipangopaludina chinensispHhepaticscanning electron microscopy(SEM)
维普
万方数据
