SUBLETHAL EFFECTS OF FENITROTHION ON THE DEVELOPMENT OF A PARENTAL GENERATION OF <i>MANDUCA SEXTA</i>

Stewart, Jeff; Philogène, Bernard J. R.

doi:10.1111/j.1570-7458.1983.tb03274.x

Cited by 9 publications

(3 citation statements)

References 17 publications

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“…Insecticide hormoligosis is known to occur in some insects and mites, e.g., Sitophilus granarius (Kuenen, 1958), Tetranychus urticae (Dittrich et al, 1974), Diabrotica virgifera (Ball and Su, 1979), Manduca sexta (Stewart and Philogene, 1983), Panonychus citri (Jones and Parrella, 1984), and Myzus persicae (Lowery and Sears, 1986;Ferguson and Chapman, 1992). The phenomenon was particularly prominent in the brown planthopper Nilaparvata lugens (Chelliah et al, 1980) and the DBM (Nemoto et al, 1984).…”

Section: Discussionmentioning

confidence: 99%

Changes in egg size of the diamondback moth Plutella xylostella(Lepidoptera: Yponomeutidae) treated with fenvalerate at sublethal doses and viability of the eggs.

Fujiwara

Takahashi

Yoshioka

et al. 2002

Appl. Entomol. Zool.

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Fecundity and egg size were compared in adult of the females adult diamondback moth, Plutella xylostella (Lepidoptera: Yponomeutidae) treated and untreated with sublethal doses of fenvalerate in order to understand the physiological significance of insecticidal hormoligosis. The 4th stadium larvae were treated with fenvalerate at LD 25 or LD 50. More eggs were laid by treated females at LD 25 than untreated females, although the difference was only marginally significant (pϭ0.07). However, the eggs laid by treated females at LD 25 and LD 50 were significantly smaller in size than those laid by the control. The reproductive effort (fecundityϫegg size) did not differ between treated females and the control. The treatment of a sublethal dose (LD 50) against the parent affected the development and survival of offspring at immature stages of males. The hatchability of smaller eggs laid by treated females at LD 25 tended to be lower than those of controls under different humidity conditions, and the difference was apparent at a humidity of 29%. The survival rate of the offspring at immature stages was lower in the treatment group (LD 25) than in the control group, and development tended to be prolonged in the former group at temperatures higher than 20°C.

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Section: Discussionmentioning

confidence: 99%

Changes in egg size of the diamondback moth Plutella xylostella(Lepidoptera: Yponomeutidae) treated with fenvalerate at sublethal doses and viability of the eggs.

Fujiwara

Takahashi

Yoshioka

et al. 2002

Appl. Entomol. Zool.

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“…Essentially every class of insecticide, including growth regula tors, has been shown to decrease the production of offspring (2,3,6, 13, 19, 21,33, 37,38,[43][44][45]61,65,67,71,74,87,92) . A few insecticides may lead to increased fecundity in specific insects (33, 84). A reduction in oviposition could indicate one or more of many adverse effects, including effects on mate-locating, courtship, oviposition, and associated physiological events such as spermatogenesis, sperm motility, oogenesis, ovulation, and egg fertilization.…”

Section: Reproductive Behaviormentioning

confidence: 99%

Sublethal Effects of Neurotoxic Insecticides on Insect Behavior

Haynes

1988

Annu. Rev. Entomol.

446

271

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PERSPECTIVES AND OVERVIEWThe behavior of insects, and all animals, is governed by interactions among neurons within their nervous systems. Insecticides have been selected and sometimes designed for their remarkable ability to kill insects. Most attack specific sites within the insect's nervous system (59, 63; see section on modes and sites of action). Therefore it is not surprising that insecticides at levels that do not lead to mortality can influence behavior. However, there have been few detailed studies concerning the potential behavioral effects of sublethal doses of insecticides.Studies of the behavioral effects of neurotoxic ants are important for several reasons (89). First, detailed observations of the behavioral symptoms of poisoned insects will help to elucidate the modes of action of both novel and conventional insecticides. Second, it is clear that almost all insecticides interfere with the normally well-orchestrated behavioral patterns of pest insects and thus might contribute to management of their populations. An important related point is that beneficial insects may be adversely affected by these compounds in a way that is overlooked by current screening procedures.Lastly, selection may favor those insects that respond to insecticides in the environment by minimizing their contact with the toxic material; thus the potential for evolution of behavioral resistance to insecticides is another important consideration.Insecticides are the cornerstones upon which pest management practices are based, and are likely to remain so as long as effective and inexpensive chemicals are available. However, many insect-pest management techniques

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“…Adult emergence was affected and some emerging adults were hyperactive, like adults also treated topically with the hydrochloride salt (Davenport & Wright, 1987). Similarly, reduced feeding has been linked to latent mortality with the toxins L-canavanine (Dahlman & Rosenthal, 1975Dahlman, 1977) and fenitrothion (Stewart & Philog6ne, 1983). It has been suggested that at the time of treatment the locomotor-stimulant action of chlordimeform and interference with proleg coordination will be most important to control and for P. brassicae, the third instar appears particularly sensitive to these ef-fects (Blackwell, 1987).…”

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Survival and development of Pieris brassicae larvae upon application of sublethal doses of chlordimeform

Blackwell

1988

Entomologia Exp Applicata

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Larvae of the large cabbage white butterfly, Pieris brassicae L. are important pests of cruciferous crops. Third and fifth instars were treated topically with sublethal doses of the formamidine pesticide chlordimeform. A number of excitable actions were induced but they did not persist beyond 24 hours. Following the initial period, however, subsequent development was delayed and mortality increased, particularly when third instars were treated. Dosing fifth‐instar larvae caused few further deaths. A link is suggested between these results and the nutritional status of the insects, and they are discussed in terms of how they might contribute towards control. Résumé Survie et développement des chenilles de Pieris brassicae après application de doses sublétales de Chlordiméforme Les chenilles de troisième et cinquième stades de P. brassicae L. ont reçu une application superficielle de chlordiméforme, insecticide à la formamidine. Les doses inférieures à 335 μg/g ont été sublétales, provoquant plusieurs formes d'excitation. Bien que leur comportement soit redevenu normal en 24 heures, les troisièmes stades traités ont eu leur développement retardé et une mortalité accrue. Le traitement des chenilles plus âgées a eu moins d'effets. Une relation est suggérée entre ces observations et le régime alimentaire de cet insecte; une réduction de l'alimentation, plus importante chez les chenilles de troisième que de cinquième stade de P. brassicae, accompagne le début des altérations du comportement provoquées par le chlordiméforme. La discussion porte sur le mécanisme de contrôle sublétal du chlordiméforme, impliquant des effets immédiats et retardés.

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SUBLETHAL EFFECTS OF FENITROTHION ON THE DEVELOPMENT OF A PARENTAL GENERATION OF MANDUCA SEXTA

Cited by 9 publications

References 17 publications

Changes in egg size of the diamondback moth Plutella xylostella(Lepidoptera: Yponomeutidae) treated with fenvalerate at sublethal doses and viability of the eggs.

Changes in egg size of the diamondback moth Plutella xylostella(Lepidoptera: Yponomeutidae) treated with fenvalerate at sublethal doses and viability of the eggs.

Sublethal Effects of Neurotoxic Insecticides on Insect Behavior

Survival and development of Pieris brassicae larvae upon application of sublethal doses of chlordimeform

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