The courtship of Drosophila melanogaster
The courtship of Drosophila melanogaster
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DOI:
10.1163/156853955x00184
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发表时间:
1955-01-01
期刊:
影响因子:
--
通讯作者:
MANNING, A.
中科院分区:
文献类型:
--
作者:
BASTOCK, M.;MANNING, A.
An attempt is made to determine the organization underlying the courtship of Drosophila melanogaster. Three elements: orientation (O), vibration (V) and licking (L) , are recognized, which do not replace but are superimposed upon one another. L is always of brief duration. The patterning of these elements in time is recorded and significant relationships can be established between the length of bouts of each. This suggests that each might occur at different thresholds of fluctuating sexual excitation (O) appearing at the lowest, L at the highest threshold. A measure of sexual excitation based on this assumption (bout length of V- L, the 2 "highest" elements can be significantly correlated with an independent measure of sexual excitation (total time spent courting an unresponsive female, over a long period). Further analysis shows that inhibitory as well as excitatory factors influence courtship. Fertilized females and males give special inhibitory stimuli which stop males courting them. Unwilling virgins give less drastic stimuli, which do not stop courtship at once, but which affect its patterning. A comparison of the courtship given by D. melanogaster males to their own and to D. simulans females respectively, suggests that where there is more inhibition (with simulans females), the rise of sexual excitation in the male from one threshold to another, is delayed. The implications of the idea of interaction between excitatory and inhibitory factors in courtship are discussed. It is suggested that conflict between them may give rise to displacement activities from which the courtship itself is derived. The occurrence of inhibitory stimuli in other animals and the possible evolution of these movements in Drosophila is discussed. || ABSTRACT AUTHORS: M. Bastock