THE WITHIN FIELD SPATIAL PATTERN OF THE LARVAL EGYPTIAN ALFALFA WEEVIL, HYPERA BRUNNEIPENNIS (COLEOPTERA: CURCULIONIDAE): AN APPLICATION OF PARAMETER ESTIMATES IN SIMULATION
- 1 December 1977
- journal article
- research article
- Published by Cambridge University Press (CUP) in The Canadian Entomologist
- Vol. 109 (12), 1599-1604
- https://doi.org/10.4039/ent1091599-12
Abstract
The spatial distribution of the Egyptian alfalfa weevil larvae using Iwao’s index of dispersion was examined in a California alfalfa field. The changing dispersion patterns with time were found to be influenced by both density induced competition for food and varying spatial distribution of host plants. values characteristic for both years quickly stabilized. This made possible a method for estimating leaf consumption rates by larval populations with an aggregated distribution, k being derived from . Field sampling decision rules were also determined.Keywords
This publication has 8 references indexed in Scilit:
- ALFALFA AND THE EGYPTIAN ALFALFA WEEVIL (COLEOPTERA: CURCULIONIDAE)The Canadian Entomologist, 1976
- POPULATION ASSESSMENT DURING THE LARVAL STAGE OF THE ALFALFA WEEVIL, HYPERA POSTICA (COLEOPTERA: CURCULIONIDAE)The Canadian Entomologist, 1975
- Spatial Distribution Patterns of Hypera postica in Kentucky Alfalfa FieldsEnvironmental Entomology, 1974
- A Plant-Aphid-Parasite RelationshipJournal of Animal Ecology, 1973
- NOTES ON THE SPATIAL PATTERN OF HYPERA POSTICA (COLEOPTERA: CURCULIONIDAE) ON ALFALFAThe Canadian Entomologist, 1972
- Statistical EcologyPublished by JSTOR ,1971
- A new regression method for analyzing the aggregation pattern of animal populationsPopulation Ecology, 1968
- `Mean Crowding'Journal of Animal Ecology, 1967