The small-scale spatial distribution of an invading moth
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The small-scale spatial distribution of an invading moth. / Nash, David Richard; Agassiz, David J. L.; Godfray, H. C. J.; Lawton, John H.
In: Oecologia, Vol. 103, 1995, p. 196-202.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - The small-scale spatial distribution of an invading moth
AU - Nash, David Richard
AU - Agassiz, David J. L.
AU - Godfray, H. C. J.
AU - Lawton, John H.
PY - 1995
Y1 - 1995
N2 - We studied the spread of a small leaf-mining moth [Phyllonorycter leucographella (Zeller), Gracillariidae] after its accidental introduction into the British Isles. At large geographical scales, previous work had shown the spread to be well described by a travelling wave of constant velocity. Here, we report the pattern of spread at scales of 1 km2. By locating all bushes of the insect's foodplant (Pyracanrha spp.) within 1-km2 quad- rats, the precise pattern of colonisation at finer spatial scales could be established. Where the 1-km2 site was colonised by moths from the main advancing front, no spatial pattern in the order that bushes were infested was found. If the source of colonisation was a single or small group of infested plants within the site, there was some evidence that nearby plants were colonised first. We found no evidence of population turnover after colonisat- ion. We interpret the results in terms of a two-stage mod- el of invasion that produces different patterns at small and large geographical scales.
AB - We studied the spread of a small leaf-mining moth [Phyllonorycter leucographella (Zeller), Gracillariidae] after its accidental introduction into the British Isles. At large geographical scales, previous work had shown the spread to be well described by a travelling wave of constant velocity. Here, we report the pattern of spread at scales of 1 km2. By locating all bushes of the insect's foodplant (Pyracanrha spp.) within 1-km2 quad- rats, the precise pattern of colonisation at finer spatial scales could be established. Where the 1-km2 site was colonised by moths from the main advancing front, no spatial pattern in the order that bushes were infested was found. If the source of colonisation was a single or small group of infested plants within the site, there was some evidence that nearby plants were colonised first. We found no evidence of population turnover after colonisat- ion. We interpret the results in terms of a two-stage mod- el of invasion that produces different patterns at small and large geographical scales.
KW - Gamma
KW - PDF
M3 - Tidsskriftartikel
VL - 103
SP - 196
EP - 202
JO - Oecologia
JF - Oecologia
SN - 0029-8519
ER -
ID: 33837998