ISSN:
1570-7458
Schlagwort(e):
Frankliniella schultzei
;
Thysanoptera
;
Insecta
;
pollen-feeding
;
petal-feeding
;
development
;
fecundity
;
Malvaviscus arboreus
Quelle:
Springer Online Journal Archives 1860-2000
Thema:
Biologie
Notizen:
Abstract Like other flower thrips, Frankliniella schultzei Trybom (Thysanoptera: Thripidae) feeds on pollen. However, the influence of a pollen diet on the life history of F. schultzei may not be as significant as reported for other thrips species. Frankliniella schultzei was reared successfully and with low mortalities (≤20%) on Wax Mallow, (Malvaviscus arboreus Cav.) plant part diets. Development times and fecundity on a petal diet were not significantly different from that on a pollen diet. Fecundity on a diet combining M. arboreus pollen, petal and leaf tissues was significantly higher than those individually containing these tissues. In laboratory choice tests, F. schultzei females encountered petal most often of the three plant parts. Pollen and leaf were encountered with similar frequencies. A significantly higher proportion of petal encounters (0.8) resulted in feeding than did pollen encounters (0.5). Few leaf encounters (0.1) were followed by feeding. Adult and larval F. schultzei were found in M. arboreus flowers but not on leaves. All parts of the flower were inhabited and not just the pollen-bearing petal apices and anthers. We propose that feeding on pollen within M. arboreus flowers is just one of many influences on the life history of F. schultzei and suggest that this may extend to other thrips species/host-plant combinations.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1007/BF00193446
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