Non-linear relationship between food resource exploitation and population density of stored-product pests
The main current strategies (IPM, HACCP) to control pests in stored food products are based on critical thresholds derived from pest population density. These thresholds usually do not consider cumulative effects of earlier pest infestation although injuries caused by biotic pest organisms to stored...
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| Format: | Article |
| Language: | English |
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Czech Academy of Agricultural Sciences
2000-06-01
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| Series: | Czech Journal of Food Sciences |
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| Online Access: | https://cjfs.agriculturejournals.cz/artkey/cjf-200003-0001_non-linear-relationship-between-food-resource-exploitation-and-population-density-of-stored-product-pests.php |
| _version_ | 1828009302762192896 |
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| author | V. Stejskal |
| author_facet | V. Stejskal |
| author_sort | V. Stejskal |
| collection | DOAJ |
| description | The main current strategies (IPM, HACCP) to control pests in stored food products are based on critical thresholds derived from pest population density. These thresholds usually do not consider cumulative effects of earlier pest infestation although injuries caused by biotic pest organisms to stored food commodities are irreversible. We present conceptual and illustrative models showing that population size indices, in contrast to cumulative (population history) indices, could (i) underestimate critical thresholds if pest population can grow exponentially and (ii) provide incorrect information about the level of stored food damage if pest population density can fluctuate. The importance of entomological food microanalysis and continual "cumulative monitoring" based on trapping is discussed with respect to HACCP and IPM programmes in stored food products. |
| first_indexed | 2024-04-10T08:36:37Z |
| format | Article |
| id | doaj.art-0b856219f12a47f6bd91e0e82c96e3d6 |
| institution | Directory Open Access Journal |
| issn | 1212-1800 1805-9317 |
| language | English |
| last_indexed | 2024-04-10T08:36:37Z |
| publishDate | 2000-06-01 |
| publisher | Czech Academy of Agricultural Sciences |
| record_format | Article |
| series | Czech Journal of Food Sciences |
| spelling | doaj.art-0b856219f12a47f6bd91e0e82c96e3d62023-02-23T03:26:25ZengCzech Academy of Agricultural SciencesCzech Journal of Food Sciences1212-18001805-93172000-06-01183818510.17221/8315-CJFScjf-200003-0001Non-linear relationship between food resource exploitation and population density of stored-product pestsV. StejskalThe main current strategies (IPM, HACCP) to control pests in stored food products are based on critical thresholds derived from pest population density. These thresholds usually do not consider cumulative effects of earlier pest infestation although injuries caused by biotic pest organisms to stored food commodities are irreversible. We present conceptual and illustrative models showing that population size indices, in contrast to cumulative (population history) indices, could (i) underestimate critical thresholds if pest population can grow exponentially and (ii) provide incorrect information about the level of stored food damage if pest population density can fluctuate. The importance of entomological food microanalysis and continual "cumulative monitoring" based on trapping is discussed with respect to HACCP and IPM programmes in stored food products.https://cjfs.agriculturejournals.cz/artkey/cjf-200003-0001_non-linear-relationship-between-food-resource-exploitation-and-population-density-of-stored-product-pests.phppest populations dynamicspopulation historycumulative population indicesthresholdsdecision making |
| spellingShingle | V. Stejskal Non-linear relationship between food resource exploitation and population density of stored-product pests Czech Journal of Food Sciences pest populations dynamics population history cumulative population indices thresholds decision making |
| title | Non-linear relationship between food resource exploitation and population density of stored-product pests |
| title_full | Non-linear relationship between food resource exploitation and population density of stored-product pests |
| title_fullStr | Non-linear relationship between food resource exploitation and population density of stored-product pests |
| title_full_unstemmed | Non-linear relationship between food resource exploitation and population density of stored-product pests |
| title_short | Non-linear relationship between food resource exploitation and population density of stored-product pests |
| title_sort | non linear relationship between food resource exploitation and population density of stored product pests |
| topic | pest populations dynamics population history cumulative population indices thresholds decision making |
| url | https://cjfs.agriculturejournals.cz/artkey/cjf-200003-0001_non-linear-relationship-between-food-resource-exploitation-and-population-density-of-stored-product-pests.php |
| work_keys_str_mv | AT vstejskal nonlinearrelationshipbetweenfoodresourceexploitationandpopulationdensityofstoredproductpests |