The Phases of Locusts in South Africa |
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Page 307
... swarm type . If we assume , for the sake of argument , that all black hoppers survived , there would remain 1,014 grey hoppers surviving to the census ; deducting the 38 transiens and solitaria , we find that at least 976 of the hoppers ...
... swarm type . If we assume , for the sake of argument , that all black hoppers survived , there would remain 1,014 grey hoppers surviving to the census ; deducting the 38 transiens and solitaria , we find that at least 976 of the hoppers ...
Page 309
Jacobus Christian Faure. this continues until a loose swarm is formed . Examining such an aggregation at a given moment , we note that some individuals are perfect swarm type hoppers ; these would be the insects that had been members of ...
Jacobus Christian Faure. this continues until a loose swarm is formed . Examining such an aggregation at a given moment , we note that some individuals are perfect swarm type hoppers ; these would be the insects that had been members of ...
Page 315
... swarm phase were considerably larger than those of the extreme solitary phase , but the difference was only 6.76 ... type , but F , and F , approached more closely to gregaria . In the ratio A / W the females gave a greater degree of ...
... swarm phase were considerably larger than those of the extreme solitary phase , but the difference was only 6.76 ... type , but F , and F , approached more closely to gregaria . In the ratio A / W the females gave a greater degree of ...
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Common terms and phrases
activity adult stage albinos Aniline yellow background became green biometrical black hoppers box painted bright green hoppers brown cages containing celluloid cylinders cylinders over growing described experiments extreme gregaria extreme solitaria F₂ fair resemblance females field fifth instar fourth instar gauze cylinders glass Graaff Reinet green colour green food green hoppers gregaria characters gregaria coloration gregaria hoppers gregaria type grey-black growing grass hoppers reared hoppers were placed incipient swarms incubation insects instar hoppers isolated hoppers John Bale Locusta migratoria Locustana pardalina locustine Makoni males material migrating swarms migratorioides migratory locusts moult number of hoppers nymphs obtained Orange Free painted boxes pair pardalina percentage permanent habitat phase gregaria phase solitaria Pretoria pronotum ratio reared in isolation second instar solitaria hoppers solitaria type solitary phase species specimens succulent swarm phase swarm type temperature tested third instar transiens type Uvarov veld Vredendal wire gauze yellow