The influence of varying level of wheat proteinaceous inhibitors in wheat-based artificial feed on development parameters of selected stored product insects

• Autorzy: Warchalewski J R , Gralik J. , Winiecki Z. , Nawrot J. , Piasecka-Kwiatkowska D.
• Języki publikacji: EN

Abstrakty

EN

The artificially made kernels from ground wheat grain, commercial wheat starch and wheat proteinaceous α-amylase inhibitors in different proportions were used as feed for adults of the granary weevil (Sitophilus granarius L.). In the case of larvae of the confused flour beetle (Tribolium confusum Duv.) and the Mediterranean flour moth (Anagasta kuehniella Zell.) the friable feed mixture were used. The survival of S. granarius adults has not been correlated with the soluble proteins extracted from wheat and amylolytic activity located in this protein fraction. On the other hand the weight of dust (the index of feeding intensity) produced during feeding has depended on the presence of α-amylase and trypsin inhibitors in wheat-based feed. A. kuehniella larvae have not developed at all on feed consisted of 50% wheat starch and 50% of crude a-amylase inhibitors from wheat. The same feed has caused 15.1 days of extension in development time of T. confusum larvae. lt attests to specific native enzymatic apparatus existing in alimentary canals of three damaging grain species which can overcome some obstacles even if extremely highly active insect α-amylase inhibitors were present in feed. However, the sufficient nutrient should be available in feed compounds. Nevertheless, some reduction of insects population can be expected.

PL

Sztuczne ziarna zrobione z handlowej skrobii pszennej i białkowych inhibitorów α-amylaz wymieszanych w różnych proporcjach oraz czyste ziarno pszenicy stanowiły pokarm wołka zbożowego (Sitophilus granaris L.). Dla larw trojszyka ulca (Trbolium confusum Duv.) i mklika mącznego (Anagasta kuchniella Zell.) te same produkty podawano w postaci sypkiej. Procent przeżywalności chrząszczy wołka zbożowego nie zależał od zawartości białka rozpuszczalnego ani od aktywności amylolitycznej pokarmu. Z drugiej strony ilość pyłu wytworzonego w czasie żerowania (wskaźnik intensywności żerowania) zależał od obecności inhibitorów α-amylazy i trypsyny. Larwy mklika mącznego nie kończyły rozwoju na pokarmie zawierającym 50% skrobii pszennej i 50 inhibitorów α-amylazy. Ten sam pokarm powodował przedłużenie rozwoju larw trojszyka ulca o 15,1 dnia. To świadczy o istnieniu wrodzonego, specyficznego aparatu enzymatycznego w przewodzie pokarmowym testowanych owadów, który może pokonać nawet ekstremalnie wysoką aktywność inhibitorów α-amylazy obecnych w pokarmie. Efektem działania inhibitorów może być tylko redukcja liczebności populacji.

Słowa kluczowe

EN

wheat starch; varying level; weevil; plant protection; wheat grain; flour moth; Sitophilus granarius; insect; Tribolium confusum; feed; insect foraging; development parameter; Anagasta kuehniella; feeding intensity; alpha-amylase inhibitor; artificial wheat-based feed; wheat; larval development; flour beetle; artificial feed; granary weevil

• Wydawca: -
• Czasopismo: Journal of Plant Protection Research
• Rocznik: 2001
• Tom: 41
• Numer: 3
• Opis fizyczny: p.266-278,fig.

Twórcy

autor

Warchalewski J R

• Agricultural University, Mazowiecka 48, 60-623 Poznan, Poland

autor

Gralik J.

autor

Winiecki Z.

autor

Nawrot J.

autor

Piasecka-Kwiatkowska D.

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