TY - JOUR
T1 - Dispersal of the date stone beetle Coccotrypes dactyliperda (Coleoptera, Curculionidae, Scolytinae) in a managed rural landscape
AU - Spennemann, Dirk HR
N1 - Publisher Copyright:
© 2022, Spennemann.
Includes bibliographical references
PY - 2022/3/9
Y1 - 2022/3/9
N2 - There are only limited experimental or observational data on vertical and horizontal flight capacity of Coccotrypes dactyliperda Fabricius,
1801 (Coleoptera, Curculionidae, Scolytinae), a major pest in date palm
plantations throughout the Mediterranean and Middle East. This paper
provides a set of proxy data, using actual observations of colonisation
rates of Phoenix canariensis (Chabaud, 1882) (Arecales,
Arecaceae) seeds in a linear planting array at Alma Park (NSW,
Australia). The majority of dispersal movements occurs between adjacent
or near adjacent seeds, followed by palms in close proximity with
movements less than 4–5 m. While the maximum observed dispersal distance
is 350 m, data suggest that a 36 m gap between two groups of palms is
beyond the flight/dispersal range of most C. dactyliperda
individuals and that colonisation over such distances would be a rare
event. Since seed location is aided by temperature-sensitive
alcohol-mediated kairomones, the chances of a beetle finding a new seed
to colonise over longer distances are increasingly diminished during the
summer months, thereby reducing reproductive success.
AB - There are only limited experimental or observational data on vertical and horizontal flight capacity of Coccotrypes dactyliperda Fabricius,
1801 (Coleoptera, Curculionidae, Scolytinae), a major pest in date palm
plantations throughout the Mediterranean and Middle East. This paper
provides a set of proxy data, using actual observations of colonisation
rates of Phoenix canariensis (Chabaud, 1882) (Arecales,
Arecaceae) seeds in a linear planting array at Alma Park (NSW,
Australia). The majority of dispersal movements occurs between adjacent
or near adjacent seeds, followed by palms in close proximity with
movements less than 4–5 m. While the maximum observed dispersal distance
is 350 m, data suggest that a 36 m gap between two groups of palms is
beyond the flight/dispersal range of most C. dactyliperda
individuals and that colonisation over such distances would be a rare
event. Since seed location is aided by temperature-sensitive
alcohol-mediated kairomones, the chances of a beetle finding a new seed
to colonise over longer distances are increasingly diminished during the
summer months, thereby reducing reproductive success.
KW - dispersal
KW - flight distances
KW - kairomones
KW - seed shadow
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UR - http://www.scopus.com/inward/citedby.url?scp=85134734317&partnerID=8YFLogxK
U2 - 10.52547/jibs.8.2.191
DO - 10.52547/jibs.8.2.191
M3 - Article
AN - SCOPUS:85134734317
SN - 2423-8112
VL - 8
SP - 191
EP - 205
JO - Journal of Insect Biodiversity and Systematics
JF - Journal of Insect Biodiversity and Systematics
IS - 2
ER -