福寿螺与本地螺种在干旱胁迫下的存活率与生理响应差异
The difference in the survival rate and physiological response between Pomacea canaliculata and native snail species under drought stress
陈映僮 1张春霞 1姚富成 1肖泽恒 1章家恩2
作者信息
- 1. 华南农业大学资源环境学院,广州 510642
- 2. 华南农业大学资源环境学院,广州 510642;广东省生态循环农业重点实验室/广东省现代生态农业与循环农业工程技术研究中心/农业农村部华南热带农业环境重点实验室,广州 510642
- 折叠
摘要
为了比较福寿螺(Pomacea canaliculata)和部分本地螺种耐旱能力的差异,探究福寿螺成功入侵的机制,测定了不同干旱时长下成年以及幼年的福寿螺、中国圆田螺(Cipangopaludina chinesis)和梨形环棱螺(Sinotaia quadrata)的存活率,并分析了干旱胁迫对3种螺体内自由水、结合水和抗氧化酶的影响.结果表明,福寿螺和中国圆田螺的存活率远高于梨形环棱螺;中国圆田螺的自由水含量最高,而福寿螺管理自身水分能力最强.福寿螺的CAT(过氧化氢酶)活性、SOD(超氧化物歧化酶)活性和T-AOC(总抗氧化能力)水平在干旱胁迫下都有不同程度的增加,并高于2种本地螺.3种螺耐旱性表现为福寿螺>中国圆田螺>梨形环棱螺.
Abstract
In order to compare the differences in drought tolerance between Pomacea canaliculata and some indigenous snail species and investigate the mechanisms underlying the successful invasion of Pomacea canaliculata,the survival rates of adult and juvenile Pomacea canaliculata,Cipangopaludina chinesis and Sinotaia quadrata were measured under different durations of drought.And the effects of drought stress on the free water,bound water,and antioxidant enzymes in the bodies of the three snail species were analyzed.The results indicated that the survival rates of Pomacea canaliculata and Cipangopaludina chinesis were significantly higher than those of Sinotaia quadrata;Cipangopaludina chinesis had the highest free water content,while Pomacea canaliculata exhibited the strongest ability in self-water management.The CAT(catalase)activity,SOD(superoxide dismutase)activity,and T-AOC(total antioxidant capacity)of Pomacea canaliculata all increased to varying degrees under drought stress,and were higher than those of the two native snail species.The drought tolerance of the three snail species was Pomacea canaliculata>Cipangopaludina chinesis>Sinotaia quadra-ta.
关键词
福寿螺(Pomacea/canaliculata)/中国圆田螺(Cipangopaludina/chinesis)/梨形环棱螺(Sinotaia/quadrata)/干旱胁迫/存活率/生理响应Key words
Pomacea canaliculata/Cipangopaludina chinesis/Sinotaia quadrata/drought stress/survival rate/physiological re-sponse引用本文复制引用
出版年
2024
NETL
NSTL
万方数据