Počet záznamů: 1

Phenotypic plasticity in the response of aphids to host plant quality

SYSNO ASEP	0439563
Druh ASEP	J - Článek v odborném periodiku
Zařazení RIV	J - Článek v odborném periodiku
Poddruh J	Ostatní články
Název	Phenotypic plasticity in the response of aphids to host plant quality
Tvůrce(i)	Thieme, T. (DE) Truberg, B. (DE) Dixon, Anthony F. G. (UEK-B)_{RID, SAI}
Zdroj.dok.	European Journal of Environmental Sciences. - : Univerzita Karlova v Praze - ISSN 1805-0174 Roč. 4, č. 2 (2014), s. 92-96
Poč.str.	5 s.
Jazyk dok.	eng - angličtina
Země vyd.	CZ - Česká republika
Klíč. slova	lupin ; alkaloids ; aphids ; Macrosiphum albifrons ; biological performance
Vědní obor RIV	EH - Ekologie - společenstva
CEP	ED1.1.00/02.0073 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy
Institucionální podpora	RVO:67179843 - RVO:67179843
Anotace	The objective of this study was first to determine whether the chemical defence of lupin is more effective against the generalist aphids that occur on lupins than the host specific, M. albifrons. Secondly, to determine whether the host specific aphid shows an increase in performance over time if it is reared on sweet lupin and whether the process is reversed when transferred back to a bitter variety of lupin. Of the lupin cultivars tested only those with strongly reduced alkaloid contents were acceptable as host plants by the generalist species of aphid tested, and only M. albifrons reproduced on the “bitter” cultivars. In order to define the performance of M. albifrons, developmental time, mean relative growth rate and number of embryos were recorded for two strains reared for several generations on a bitter cv. of lupin and then transferred for several generations to sweet lupin and then reared again on a bitter cv. of lupin. The performance of M. albifrons was not better on lupins rich in alkaloids. However, the results also indicate that this aphid can adapt and thrive on a previously resistant cultivar within five generations even when reproducing parthenogenetically and that this change is reversible.
Pracoviště	Ústav výzkumu globální změny
Kontakt	Nikola Šviková, svikova.n@czechglobe.cz, Tel.: 511 192 268
Rok sběru	2015

Počet záznamů: 1