By Morris Rockstein
Hardback e-book with dirt jacket titled body structure OF INSECTA, quantity three
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Extra resources for The Physiology of Insecta. Volume III
Sleeping aggregations: Rau and Rau, 1916; Linsley, 1962; Curio, 1964) or hibernating aggregations as in coccinelid beetles (Hagen, 1962), since only from the parent-offspring groupings has true social life evolved in animals (Markl, 1971b). III. Analysis of Mechanisms A. INTRODUCTORY REMARKS Following this necessarily superficial survey of the main functional types, behavior will now be analyzed not according to its significance but its causes. Even here, however, the^biological objective fulfilled by behav ior should not be ignored because it can lead us to an understanding of its evolution.
As to rank order in social Hymenoptera, especially well-known from polistine wasps, see West Eberhard (1969), Richards (1971), Wilson, (1971), Jeanne (1972), and Chapter 2 of this volume. In mantids, which can also defend territories (MacKinnon, 1970), conspecifics seem to be assailed with the same strokes as prey or enemies. However, an analysis of filmed records shows that a small detail of the prey-catching stroke is missing: the final closing of the tibia against the femur is omitted (Roeder, 1958, 1960) (Fig.
Experi ments with inversed eyes show (Fig. 8) that the orientation to light is not caused in Eristalis by a balance of rigid reflex connections of different ommatidia, but that there is an integrative center at work in the CNS which uses the signals of different ommatidia according to their spatial distribution. The turning effect of an ommatidium is thus determined by the characteristics of the centers to which it is connected. In Notonecta the most light-sensitive ommatidia were found to be least turning effec tive (Lüdtke, 1935, 1953).