caa a22 4500 388035846 CHVBK 20180307125004.0 cr unu---uuuuu 161130e199812 xx s 000 0 eng 10.1017/S0007485300054328 doi S0007485300054328 pii (NATIONALLICENCE)cambridge-10.1017/S0007485300054328 Selection for a moderately insecticide resistant clone of Myzus persicae (Hemiptera: Aphididae) on sugarbeet in the absence of pesticides [Elektronische Daten] Highly resistant and extremely resistant clones (R2 and R3) of Myzus persicae (Sulzer) exhibited a significantly lower mortality and developed a deleterious dark stomach deposit less frequently on sugarbeet than a susceptible (S) clone. After allowing equal populations of four resistant clones to develop together on sugarbeet for four weeks, approximately half of the aphids recovered were from the moderately resistant (R1) clone, suggesting that this clone had a significantly greater reproductive rate than the others. There was no significant difference in the propensity of any clone to produce alates on sugarbeet, although none of the clones produced very many. It is suggested that, even in the absence of insecticides on sugarbeet, resistant clones may become dominant due to their higher fecundity (R1 clones) and lower mortality (R2 and R3 clones) than susceptible clones. Copyright © Cambridge University Press 1998 Williams I.S. School of Biological Sciences, University of East Anglia, Norwich, NR4 7TJ, UK Haylock L.A. IACR-Broom's Barn, Higham, Bury St Edmunds, Suffolk, IP28 6NP, UK Dewar A.M. IACR-Broom's Barn, Higham, Bury St Edmunds, Suffolk, IP28 6NP, UK Dixon A.F.G. School of Biological Sciences, University of East Anglia, Norwich, NR4 7TJ, UK Bulletin of Entomological Research Cambridge University Press 88/6(1998-12), 653-658 0007-4853 88:6<653 1998 88 BER https://doi.org/10.1017/S0007485300054328 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1017/S0007485300054328 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Williams I.S. School of Biological Sciences, University of East Anglia, Norwich, NR4 7TJ, UK NATIONALLICENCE 700 1- Haylock L.A. IACR-Broom's Barn, Higham, Bury St Edmunds, Suffolk, IP28 6NP, UK NATIONALLICENCE 700 1- Dewar A.M. IACR-Broom's Barn, Higham, Bury St Edmunds, Suffolk, IP28 6NP, UK NATIONALLICENCE 700 1- Dixon A.F.G. School of Biological Sciences, University of East Anglia, Norwich, NR4 7TJ, UK NATIONALLICENCE 773 0- Bulletin of Entomological Research Cambridge University Press 88/6(1998-12), 653-658 0007-4853 88:6<653 1998 88 BER CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge