Abstract
The effect of administering different quantities of a JHA topically and orally to the last instar larva ofSpodoptera litura of different ages has been studied. With both modes of treatment the effects comprised prolongation of the life of the instar followed frequently by death; imperfect ecdysis adversely affecting survival; production of non-viable larval-pupal intermediates, and occurrence of extra larval moults. Topical treatment is more effective but ecdysial failure and production of 1-p intermediates are more frequent with oral administration. A single supernumerary larval moult may be caused by administering a large quantity of JHA to 1 day old larva. Supernumerary instars are non-viable. Contrary to expectation, 1-p intermediates produced by early treatment show more pupal characters whereas middle-aged larvae show more larval characters. Prolongation of larval life caused by small quantities of JHA is the largest single effect which results into larval mortality.
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References
Abdallah M D, Zaazou M H and El-Tantawi M 1974 Sensitivity of the larval stage ofSpodoptera littoralis Boisd. to a juvenile hormone analogue;Toxicology 2 349–354
Akai H and Kobayashi M 1971 Induction of prolonged larval instar by the juvenile hormone inBombyx mori L.;Appl. Ent. Zool. 6 138–139
Branshby-Williams W R 1972 Activity of two juvenile hormone analogues withHeliothis armigera (Hubner),Sitophilus zaemais Motshulsky andEphestia cautella (Walker);East Afr. Agric. Forest J. 38 170–174
Cruickshank P A and Palmere R M 1971 Terpenoid amines as insect juvenile hormone;Nature (London)233 488–489
Hangartner W and Masner P 1973 Juvenile hormone: inhibition of ecdysis in larvae of the German cockroach,Blatella germania;Experientia 29 1358–1359
Hussain M and Askari A 1975 Effect of three juvenile hormone mimics on the development ofEarias insulana Boisduval (Arctidae, Lepidoptera);Z. Angew. Ent. 79 360–364
Kimura S 1973a The control of chitinase activity by ecdysterone in larvae ofBombyx mori;J. Insect Physiol. 19 115–123
Kimura S 1973b The control of chitin deposition by ecdysterone in larvae ofBombyx mori;J. Insect Physiol. 19 2177–2181
Masner P, Hangartner, W and Suchy M 1975 Reduced titres of ecdysone following juvenile hormone treatment in the German cockroach,Blattella germanica;J. Insect Physiol. 21 1755–1762
Negishi T, Shimada A and Asano S 1976 Effects of insect growth regulators on the tobacco cutworm,Spodoptera litura: rectal prolapse;J. Insect Physiol 22 1523–1527
Nijhout H F 1973 Control of the pupal moult in the tobacco hornworm;Am. Zool. 13 1272
Plantevin G 1975 (A contribution to the study of the biology ofGalleria mellonella. The action of juvenile hormone and some mimics on the organism as a whole);Animale de Zoologie, Ecologie Animale 7 441–476
Riddiford L M 1972 Juvenile hormone in relation to the larval-pupal transformation of the Cecropia silkworm;Biol. Bull. 142 310–325
Sehnal F and Granger N A 1975 Control of corpora allata function in lavae ofGalleria mellonella;Biol. Bull. Woods Hole 148 108–116
Sehnal F, Metwally M M and Gelbic I 1976 Reactions of immature stages of noctuid moths to juvenoids;Z. Ang. Ent. 81 85–102
Sehnal F and Meyer A S 1968 Larval-pupal transformation: Control by juvenile hormone;Science 15 981–984
Silhaćek D L and Oberlander H 1975 Time-dosage studies of juvenile hormone action on the development ofPlodia interpunctella;J. Insect Physiol. 21 153–161
Slama K, Romanuk M and Sorm F 1974Insect hormones and bioanalogues (Wien-New York: Springer Verlag)
Srivastava U S and Gilbert L I 1969 The influence of juvenile hormone on the metamorphosis ofSacrophaga bullata;J. Insect Physiol. 15 177–187
Srivastava U S, Srivastava R C, Prasad S S and Srivastava P 1979 Endocrinological adaptations in insects;Experientia 35 1301–1302
Stall G B 1972 Biological activity and bioassay of juvenile hormone analogs inInsect juvenile hormones J J Menn, M Beroza (eds) (New York and London: Academic Press) pp 69–94
Sundermurthy V T 1976 Effect of insect growth regulators on growth and differentiation of the tobacco caterpillarSpodoptera litura Fb. (Noctuidae: Lepidoptera):Phytoparasitica 4 19–24
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Srivastava, U.S., Prasad, S.S. The effect of topical and oral administration of a juvenoid to the last instar larva ofSpodoptera litura Fabr.. Proc Ani Sci 89, 359–370 (1980). https://doi.org/10.1007/BF03179189
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DOI: https://doi.org/10.1007/BF03179189