水流速对福寿螺生长及摄食率的影响
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上海市2023年度“科技创新行动计划”农业科技领域项目(23N41900100)


Effects of flow velocity on growth and feeding of Pomacea canaliculata
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    摘要:

    【目的】 探究福寿螺在不同流速下的生长及摄食情况,以期指导流水情况下的福寿螺防控。【方法】 通过室内模拟试验,分别在3.8、7.7 cm·s-1和无流速下,测定和分析福寿螺的壳高、体重、特定生长率和最大摄食率等指标。【结果】 不同流速下,福寿螺的平均壳高具显著差异(P<0.05),而平均体重无显著差异(P>0.05)。在3.8 cm·s-1流速下的壳高增长率、体重增长率和特定生长率均高于7.7 cm·s-1和无流速,但壳高增长率无显著差异(P>0.05),体重增长率和特定生长率均具显著差异(P<0.05)。3种流速下福寿螺的总死亡率为25.6%。其中,3.8 cm·s-1流速下的死亡率为30.0%,7.7 cm·s-1和无流速下的死亡率均为23.3%,不同流速下的死亡率无显著差异(P>0.05)。福寿螺在7.7 cm·s-1流速下的最大摄食率显著高于3.8 cm·s-1流速(P<0.05),无流速下的最大摄食率介于两者之间,且分别与两者的最大摄食率无显著差异(P>0.05)。【结论】 适宜的流速会促进福寿螺的生长,但当流速继续增大时,限制福寿螺的生长,并显著提高其最大摄食率。

    Abstract:

    【Aim】 To investigate the growth and feeding behavior of Pomacea canaliculata under different flow velocity conditions and provide guidance for P. canaliculata control in flowing water. 【Method】 Indoor simulation experiments were conducted to measure and analyze the shell height, body weight, specific growth rate, and maximum ration level of P. canaliculata under flow velocities of 3.8 cm·s-1, 7.7 cm·s-1and no flow velocity. 【Result】 The average shell height of P. canaliculata showed significant differences under different flow velocity conditions (P<0.05), while the average body weight of P. canaliculata did not show significant difference (P>0.05). Under a flow velocity of 3.8 cm/s, the shell height growth rate, body weight growth rate, and specific growth rate were higher than those under 7.7 cm·s-1and no flow velocity conditions. However, the shell height growth rate did not show a significant difference (P>0.05), while the body weight growth rate and specific growth rate showed significant difference (P<0.05). The total mortality rate of P. canaliculate under the three flow velocities was 25.6%. Specifically, the mortality rate under a flow velocity of 3.8 cm·s-1 was 30.0%, while the mortality rates under 7.7 cm·s-1 and no flow velocity conditions were both 23.3%. The mortality rates under different flow velocity conditions did not show significant differences (P>0.05). The maximum ration level of P. canaliculata under the flow velocity of 7.7 cm·s-1 was significantly higher than that under 3.8 cm·s-1 (P<0.05), while the maximum ration level under no flow velocity condition was between the two and did not show significant differences with either of them (P>0.05). 【Conclusion】 Appropriate flow velocities promote the growth of P. canaliculata, but when the flow velocity continues to increase, it restricts the growth of P. canaliculata and significantly increases the maximum ration level.

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王淼,张玉平,袁永达.水流速对福寿螺生长及摄食率的影响[J].生物安全学报中文版,2025,34(4):331-337

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  • 收稿日期:2024-05-06
  • 最后修改日期:2024-06-30
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  • 在线发布日期: 2025-11-05
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