ISSN:
1432-1351
Quelle:
Springer Online Journal Archives 1860-2000
Thema:
Biologie
,
Medizin
Notizen:
Summary High speed cine film ofLocusta migratoria swarms was analysed. The following variables were studied and compared where possible with laboratory data: 1. Wing-beat frequencies of locusts of Australian and New Guinea swarms (mean 22.9 Hz) were higher than laboratory figures (19.8 Hz; Fig. 1). 2. Mean flight speed was 4.6 m/s, which was higher than laboratory figures (3.3 m/s; Fig. 2). 3. Mean body angle to horizontal was 7.4°, and to flight path (in the vertical plane) was 5.2°. Flight speed was found to be correlated with wing-beat frequency with a similar regression line to that found in laboratory work (Fig. 4). Ascent angle was positively correlated with the body angle to horizontal, but not correlated with body angle to flight path (Figs. 3, 5, 6).
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1007/BF01342669
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