Host plant recognition by the root feeding clover weevil, Sitona lepidus (Coleoptera: Curculionidae)

Scott N. Johnson, Peter J. Gregory, Philip J. Murray, Xiaoxian Zhang

Research output: Contribution to journalArticle

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13 Downloads (Pure)

Abstract

This study investigated the ability of neonatal larvae of the root-feeding weevil, Sitona lepidus Gyllenhal, to locate white clover Trifolium repens L. (Fabaceae) roots growing in soil and to distinguish them from the roots of other species of clover and a co-occurring grass species. Choice experiments used a combination of invasive techniques and the novel technique of high resolution X-ray microtomography to non-invasively track larval movement in the soil towards plant roots. Burrowing distances towards roots of different plant species were also examined. Newly hatched S. lepidus recognized T. repens roots and moved preferentially towards them when given a choice of roots of subterranean clover, Trifolium subterraneum L. (Fabaceae), strawberry clover Trifolium fragiferum L. (Fabaceae), or perennial ryegrass Lolium perenneL. (Poaceae). Larvae recognized T. repens roots, whether released in groups of five or singly, when released 25 mm (meso-scale recognition) or 60 mm (macro-scale recognition) away from plant roots. There was no statistically significant difference in movement rates of larvae.
Original languageEnglish
Pages (from-to)433-439
Number of pages7
JournalBulletin of Entomological Research
Volume94
Issue number5
DOIs
Publication statusPublished - Oct 2004

Fingerprint

Sitona lepidus
Trifolium repens
Curculionidae
Trifolium fragiferum
host plants
Coleoptera
Fabaceae
Trifolium subterraneum
larvae
micro-computed tomography
soil movement
burrowing
Lolium
Lolium perenne
Poaceae
grasses
methodology
soil

Cite this

Johnson, Scott N. ; Gregory, Peter J. ; Murray, Philip J. ; Zhang, Xiaoxian. / Host plant recognition by the root feeding clover weevil, Sitona lepidus (Coleoptera: Curculionidae). In: Bulletin of Entomological Research. 2004 ; Vol. 94, No. 5. pp. 433-439.
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abstract = "This study investigated the ability of neonatal larvae of the root-feeding weevil, Sitona lepidus Gyllenhal, to locate white clover Trifolium repens L. (Fabaceae) roots growing in soil and to distinguish them from the roots of other species of clover and a co-occurring grass species. Choice experiments used a combination of invasive techniques and the novel technique of high resolution X-ray microtomography to non-invasively track larval movement in the soil towards plant roots. Burrowing distances towards roots of different plant species were also examined. Newly hatched S. lepidus recognized T. repens roots and moved preferentially towards them when given a choice of roots of subterranean clover, Trifolium subterraneum L. (Fabaceae), strawberry clover Trifolium fragiferum L. (Fabaceae), or perennial ryegrass Lolium perenneL. (Poaceae). Larvae recognized T. repens roots, whether released in groups of five or singly, when released 25 mm (meso-scale recognition) or 60 mm (macro-scale recognition) away from plant roots. There was no statistically significant difference in movement rates of larvae.",
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Host plant recognition by the root feeding clover weevil, Sitona lepidus (Coleoptera: Curculionidae). / Johnson, Scott N.; Gregory, Peter J.; Murray, Philip J.; Zhang, Xiaoxian.

In: Bulletin of Entomological Research, Vol. 94, No. 5, 10.2004, p. 433-439.

Research output: Contribution to journalArticle

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