Behavioral and Functional Responses of Labidura riparia Pallas Preying on Spodoptera frugiperda

doi:10.16409/j.cnki.2095-039x.2021.11.001

Abstract

Abstract: Predation of Labidura riparia Pallas preying on Spodoptera frugiperda was investigated by observing the predatory behaviors of 5^th instar nymphs of L. riparia to the eggs and 1―6^th instar larvae and adults of S. frugiperda and measuring the predation functional response of 5^th instar nymphs of L. riparia to 6^th instar larvae S. frugiperda at the conditions of (26±1) ℃, (75±5)% RH and a photoperiod of 16L:8D. The results demonstrated that the 5^th instar nymphs of L. riparia showed strong predation capacity to the eggs, larvae and even the flightless adults of S. frugiperda. When L. riparia preyed on S. frugiperda, L. riparia did not eat up S. frugiperda completely; instead, L. riparia bited S. frugiperda until the preys could not move and then transferred to attack other preys. The predatory functional response of the 5^th instar nymphs of L. riparia to 6^th instar larvae S. frugiperda fitted well with Holling II model, with average preying number of 2.85 per day. L. riparia can be used as a potential local natural enemy to control the invasive pest S. frugiperda in the future.

Key words: Labidura riparia, Spodoptera frugiperda, predation behavior, predation functional responses

CLC Number:

S476.2

TIAN Caihong, CAO Huayi, ZHANG Junyi, LIU Xiaoguang, CAI Ting, LI Guoping, HUANG Jianrong, FENG Hongqiang. Behavioral and Functional Responses of Labidura riparia Pallas Preying on Spodoptera frugiperda[J]. Chinese Journal of Biological Control, 2021, 37(6): 1160-1165.

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