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The number of overwintering adults grew with the distance from the shelterbelts. Shelterbelt did not affect the numbers of the summer generation of beetles or of any of the instars. With the growing distance from the shelterbelt the eggs laid by the Colorado beetle increased in number. The reduction rate of younger in stars increased with a decrease in the distance from the shelterbelt and with time. No such relations could be seen in the case of eggs or instars L4.
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Operational Program Digital Poland, 2014-2020, Measure 2.3: Digital accessibility and usefulness of public sector information; funds from the European Regional Development Fund and national co-financing from the state budget.