Decreased response to feeding deterrents following prolonged exposure in the larvae of a generalist herbivore, Trichoplusia ni (Lepidoptera: Noctuidae)

被引:40
作者
Akhtar, Y
Rankin, CH
Isman, MB [1 ]
机构
[1] Univ British Columbia, Fac Agr Sci, Vancouver, BC V6T 1Z4, Canada
[2] Univ British Columbia, Dept Psychol, Vancouver, BC V6T 1Z4, Canada
基金
加拿大自然科学与工程研究理事会;
关键词
Trichoplusia ni; antifeedants; Melia volkensii; Origanum vulgare; pure compounds; habituation; dishabituation;
D O I
10.1023/B:JOIR.0000018322.45068.a9
中图分类号
Q96 [昆虫学];
学科分类号
摘要
We investigated the role of experience with several antifeedants on the feeding behavior of a generalist herbivore, Trichoplusia ni. Second-, third-, and fifth-instar larvae of T. ni were examined for their feeding responses to plant extracts (Melia volkensii, Origanum vulgare) and individual plant allelochemicals ( cymarin, digitoxin, xanthotoxin, toosendanin, and thymol), after being exposed to them continually beginning as neonates. All tested instars of T. ni were capable of showing a decreased antifeedant response following prolonged exposure to most of the antifeedants tested compared with their naive conspecifics. Cardenolides ( digitoxin and cymarin) were the exceptions. The response to oregano was affected as a result of previous exposure to different concentrations of oregano, unlike M. volkensii, leading us to conclude that T. ni sensitivity varies between stimuli and cannot be generalized. To demonstrate that decreased deterrence following prolonged exposure to M. volkensii was the result of learned habituation, three aversive stimuli were used. A high concentration of the particular antifeedant, xanthotoxin, acted as a noxious stimulus and dishabituated ( reversed) the decrement in the antifeedant response to M. volkensii. Cold shock or CO2 was marginally effective in dishabituating the response. The fact that the decrease in antifeedant response can be dishabituated has implications for pest management.
引用
收藏
页码:811 / 831
页数:21
相关论文
共 51 条
[41]  
SCHOONHOVEN LM, 1977, P KON NED AKAD WTS C, V72, P491
[42]  
SIMMONDS MSJ, 1984, SCHRIFTENREIHE GTZ, V161, P163
[43]   Antimicrobial and cytotoxic activities of Origanum essential oils [J].
Sivropoulou, A ;
Papanikolaou, E ;
Nikolaou, C ;
Kokkini, S ;
Lanaras, T ;
Arsenakis, M .
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY, 1996, 44 (05) :1202-1205
[44]   A STUDY OF BEHAVIORAL HABITUATION TO A FEEDING DETERRENT IN NYMPHS OF SCHISTOCERCA-GREGARIA [J].
SZENTESI, A ;
BERNAYS, EA .
PHYSIOLOGICAL ENTOMOLOGY, 1984, 9 (03) :329-340
[45]  
Szentesi A., 1990, P39
[46]   FUNGITOXIC ACTIVITY OF ESSENTIAL OIL COMPONENTS ON FOOD STORAGE FUNGI [J].
THOMPSON, DP .
MYCOLOGIA, 1989, 81 (01) :151-153
[47]   HABITUATION - A MODEL PHENOMENON FOR STUDY OF NEURONAL SUBSTRATES OF BEHAVIOR [J].
THOMPSON, RF ;
SPENCER, WA .
PSYCHOLOGICAL REVIEW, 1966, 73 (01) :16-&
[48]  
USHER BF, 1988, ENTOMOL EXP APPL, V48, P203, DOI 10.1007/BF00376399
[49]   PHLOROGLUCINOL-TYPE FUROCOUMARINS, A GROUP OF POTENT NATURALLY-OCCURRING INSECT ANTIFEEDANTS [J].
YAJIMA, T ;
MUNAKATA, K .
AGRICULTURAL AND BIOLOGICAL CHEMISTRY, 1979, 43 (08) :1701-1706
[50]  
ZAR JH, 1984, BIOSTAT ANAL, P168