Pest warn­ing

Cli­mate change is in­flu­enc­ing mi­gra­tory pat­terns and evo­lu­tion in pests, threat­en­ing our food bas­ket

Down to Earth - - SCIENCE - INDU MATHI S

Care adapt­ing to cli­mate change ROP PESTS and are evolv­ing to spread to new ar­eas to wreak more havoc. Dan Bebber from the depart­ment of bio­sciences at the Univer­sity of Ex­eter, UK, re­viewed the lit­er­a­ture on im­pact of cli­mate change on crop pests.He il­lus­trates his find­ings through ex­am­ple of the Colorado potato bee­tle, which is orig­i­nally from south­west­ern US, en­tered France in the 1950s and in­vaded most Euro­pean and cen­tral Asian coun­tries.By the 1990s,it reached China from Kaza­khstan and moved to­wards Rus­sia. It is dif­fi­cult to pre­dict the bee­tle’s mi­gra­tory course as pre­dic­tion mod­els do not take into ac­count the in­sect’s evo­lu­tion and highly adapt­able na­ture.

“Our re­view has high­lighted how dif­fi­cult it is to pre­dict where dam­ag­ing crop pests may turn up.

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