Summary
The predatory behaviour of Agrion splendens larvae is greatly disturbed after removal of only one antenna.
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1.
When the prothoracic tarsus is stimulated on the unharmed side, the behaviour remains unchanged (Figs. 2, 4–6).
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2.
However, stimulation of the prothoracic tarsus on the operated side (Figs. 3–7) demonstrates:
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a)
a new posture of the animal occuring one month after removal of one antenna: at this time the larva brings its other antenna into contact with the model stimulating the contralateral tarsus,
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b)
a slower decrease of the predatory behaviour when compared with the decrease on the intact side (Kg. 5, SR), an effect which is observed only after “learning” the new posture.
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References
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—: Description du réflexe de capture chez la larve d'Agrion splendens Harris 1782 (Insecte, Odonate, Zygoptère). Bull. mens. Soc. Linn. Lyon 10, 424–434 (1965b).
—: Rôle des organes des sens dans le comportement de capture chez la larve d'Agrion splendens Harris 1782 (Insectes, Odonates, Zygoptères). Bull. mens. Soc. Linn. Lyon 1, 25–34 (1968).
Luco, J. V., Aranda, L. C.: An electrical correlate to the process of learning. Acta physiol. lat.-amer. 14, 274–288 (1964).
Rowell, C. H. F.: Central control of an insect segmental reflex. I. Inhibition by different parts of the central nervous system. J. exp. Biol. 41, 559–572 (1964).
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I am grateful to Prof. Dr. F. Hubner for his interest in this work and for helpful criticism.
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Caillère, L. Long term learning in Agrion (Syn. Calopteryx) splendens harris 1782 larvae (Insecta, Odonata). Z. Vergl. Physiol. 69, 284–295 (1970). https://doi.org/10.1007/BF00297963
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DOI: https://doi.org/10.1007/BF00297963