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Theoretical rates of increase of gregarious and solitarious populations of the Desert Locust

โœ Scribed by Robert A. Cheke

Book ID
104732214
Publisher
Springer-Verlag
Year
1978
Tongue
English
Weight
467 KB
Volume
35
Category
Article
ISSN
0029-8549

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โœฆ Synopsis

Leslie matrices are used to compare theoretical populations of gregarious and solitarious Desert Locusts, Schistocerca gregaria (Forsk.). Despite their lower fecundity, the synchrony and faster maturation of gregarious populations permit them to have much faster rates of increase than solitarious populations. When realistic mortality estimates are assumed the differences can be very pronounced even when the rates of mortality are the same for both phases; this suggests that the longer period during which solitarious locusts are susceptible to predation is critical. The conclusions are briefly discussed with respect to the genesis and maintenance of locust plagues and the evolutionary significance of gregarisation.

๐Ÿ“œ SIMILAR VOLUMES

Developmental changes in the structure a
Developmental changes in the structure and function of the central olfactory system in gregarious and solitary desert locusts
โœ Sylvia Anton; Rickard Ignell; Bill S. Hansson ๐Ÿ“‚ Article ๐Ÿ“… 2002 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 844 KB

## Abstract Desert locusts are guided by olfactory cues in different behavioural contexts. In order to understand the basis for the variable olfactory guided behaviour displayed by different developmental stages and by solitary and gregarious locusts, we investigated their central olfactory system