Abstract
MORTALITY OF STORED-FOOD BEETLE LARVAE EXPOSED TO A CONTROLLED ATMOSPHERE ENRICHED
WITH NITROGEN AND CONTAINING ABOVE-MINIMUM LEVELS OF OXYGEN
Insect pests of stored foodstuffs can cause different types of damage. The larval stage is often
the chief culprit, causing serious damage to food commodities while being the most resistant to
hypoxic treatments. Knowledge of the response to treatment during each development stage is
necessary for pest management programs. This research aimed to evaluate the possibility of using
a nitrogen controlled atmosphere as an alternative to biocide treatments against larvae of five
important species of stored-food beetles (Coleoptera), and to enhance the negative effects of
hypoxia at above-minimum oxygen levels (O2 > 1%), with changing temperatures and relative
humidity levels, given that several studies have shown that lowering the relative humidity and
increasing the temperature improves the effectiveness of controlled atmosphere treatments. The
species tested were Sitophilus granarius (Linnaeus), Oryzaephilus surinamensis (Linnaeus),
Stegobium paniceum (Linnaeus), Trogoderma inclusum LeConte and Tribolium confusum
Jacquelin du Val. Larvae were exposed to atmospheres containing low percentages of oxygen (3%,
5%), at four different relative humidities (15%, 35%, 55%, 75%) and two different temperatures
(23°C, 30°C) for 7 days. Total mortality was achieved in very few cases, and only under the most
unfavorable conditions of the lowest levels of relative humidity and oxygen content. Results varied
from species to species, so it is evident that the efficacy of treatment by means of controlled
atmosphere is species-dependent.
Titolo tradotto del contributo | [Autom. eng. transl.] Use of controlled medium to low oxygen atmospheres for the control of commodity beetle larvae |
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Lingua originale | Italian |
Titolo della pubblicazione ospite | Atti del 10° Simposio "La difesa antiparassitaria nelle industrie alimentari e la protezione degli alimenti" |
Pagine | 165-172 |
Numero di pagine | 8 |
Volume | 10° |
Stato di pubblicazione | Pubblicato - 2020 |
Evento | 10° Simposio "La difesa antiparassitaria nelle industrie alimentari e la protezione degli alimenti" - Piacenza - Italia Durata: 20 set 2017 → 22 set 2017 |
Convegno
Convegno | 10° Simposio "La difesa antiparassitaria nelle industrie alimentari e la protezione degli alimenti" |
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Città | Piacenza - Italia |
Periodo | 20/9/17 → 22/9/17 |
Keywords
- atmosfere controllate
- azoto
- coleotteri infestanti
- derrate
- gestione antiparassitaria