Summary
Flight performance in locusts is a function of age, with its peak value at 18 days after emergence. While allatectomy retards the normal development of flight capability, it also has the effect of slowing down the decline in flight performance characteristic of operated control locusts as they age. Periodic topical application of synthetic juvenile hormone remedies the initial effect of allatectomy but its effectiveness wears off with age. The period of optimum flight performance is prolonged in locusts allatectomised when mature.
A characteristic features of the flight pattern of immature-allatectomised and matureallatectomised locusts when flown about one week after the operation is a rapid decline in flight speed during the first 20 minutes of flight. Eventually, as the allatectomised locusts age, they assume the flight pattern of normal locusts and subsequent differences in flight performance between operated and normal locusts are confined to differences in flight intensity.
Allatectomy has no marked effect on the preflight haemolymph total lipid and carbohydrate levels, the mobilisation of lipid and the amount of carbohydrate depleted. The quantity of lipid mobilised is, however, related to flight performance in both allatectomised and operated control locusts. Locusts which fly faster mobilise more lipid. The lipids mobilised by the adipokinetic hormone are 16∶18; 18∶18 and 16∶16 diglycerides in order of abundance. Allatectomy has no effect on the nature of these diglycerides released during flight.
Similar content being viewed by others
References
Beenakkers, A. M. T.: The influence of corpus cardiacum on lipid metabolism inLocusta migratoria. Gen. comp. Endocr.13 Abstract 12 (1969)
Goldsworthy, G. J.: Hormones and flight in the locust. Proc. 50th Anniversary Meeting Soc. Exp. Biol., Cambridge, 1974. Oxford-London-New York: Pergamon Press 1975 (in press)
Goldsworthy, G. J., Coupland, A. J., Mordue, W.: The effects of corpora cardiaca on tethered flight in the locust. J. comp. Physiol.82, 339–346 (1973a)
Goldsworthy, G. J., Johnson, R. A., Mordue, W.:In vivo studies on the release of hormones from the corpora cardiaca of locusts. J. comp. Physiol.79, 85–96 (1972a)
Goldsworthy, G. J., Mordue, W., Guthkelch, J.: Studies on insect adipokinetic hormones. Gen. comp. Endocr.18, 545–551 (1972b)
Goldsworthy, G. J., Mordue, W., Johnson, R. A.: The hormonal content of the locust corpus cardiacum. J. comp. Physiol.85, 213–220 (1973b)
Hill, L., Izatt, M. E. G.: The relationships between corpora allata and fat body and haemolymph lipids in the adult female Desert Locust. J. Insect Physiol.20, 2143–2156 (1974)
Jutsum, A. R., Goldsworthy, G. J.: Locust adipokinetic hormone and haemolymph metabolites. J. Endocr.64, 65–66P (1975)
Mayer, R. J., Candy, D. J.: Control of haemolymph lipid concentration during locust flight: an adipokinetic hormone from the corpora cardiaca. J. Insect Physiol.15, 611–620 (1969)
Michel, R.: Contribution à l'étude des facteurs de regulation de la tendance à voler chez le criquet pélerinSchistocerca gregaria (Forskål). Thèse, Université de Rennes (1972a)
Michel, R.: Influence des corpora cardiaca sur la tendance au vol soutenu du criquet pélerinSchistocerca gregaria (Forsk.). J. Insect Physiol.18, 1811–1827 (1972b)
Michel, R.: Variations de la tendance au vol soutenu du criquet pélerinSchistocerca gregaria aprè implantations de corpora cardiaca. J. Insect Physiol.19, 1317–1325 (1973)
Michel, R., Bernard, A.: Influence de la pars intercerebralis sur l'induction au vol soutenu chez le criquet pélerinSchistocerca gregaria. Acrida2, 139–149 (1973)
Minks, A. K.: Biochemical aspects of juvenile hormone action in adultLocusta migratoria. Arch. néerl. Zool.17, 175–258 (1967)
Mordue, W., Goldsworthy, G. J.: Transaminase levels and uric acid production in adult locusts. Insect Biochem.3, 419–427 (1973)
Mordue, W., Goldsworthy, G. J.: Some recent progress in acridid endocrinology. Acrida3, IX-XXXVIII (1974)
Poels, C. L. M., Beenakkers, A. M. T.: The effects of corpus allatum implantation on the development of flight muscle and fat body inLocusta migratoria. Ent. exp. appl.12, 312–324 (1969)
Robinson, N. L., Goldsworthy, G. J.: The effects of locust adipokinetic hormone on flight muscle metabolismin vivo andin vitro. J. comp. Physiol.89, 369–377 (1974)
Roe, J. H.: The determination of sugar in the blood and spinal fluid with the anthrone reagent. J. biol. Chem.212, 335–338 (1955)
Vejbjerg, K., Normann, T. C.: Secretion of hyperglycaemic hormone from the corpus cardiacum of flying blowflies,Calliphora erythrocephala. J. Insect Physiol.20, 1189–1192 (1974)
Wajc, E.: The effect of the corpora allata on flight activity ofLocusta migratoria migratorioides (R & F). Ph.D. Thesis, University of London (1973)
Wajc, E., Pener, M. P.: The effect of the corpora allata on the flight activity of the male African migratory locust,Locusta migratoria migratorioides (R & F). Gen. comp. Endocr.17, 327–333 (1971)
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Lee, S.S., Goldsworthy, G.J. Allatectomy and flight performance in maleLocusta migratoria . J Comp Physiol B 100, 351–359 (1975). https://doi.org/10.1007/BF00691055
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF00691055