Searching Behaviour of Metaphycus helvolus, (Compere) and Scutellista cyanea, Motschulsky on Hemispherical Scale, S. coffeae (Walker)
The host searching of Metaphycus helvolus and Scutellisa cyanea were studied under two different constant temperatures of18 °Cand 26 °C. In the course of host-searching, both parasitoids were involved with host-drilling, handling, preening, walking and resting. Host-feeding only occurred with M. h...
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| Format: | Article |
| Language: | English English |
| Published: |
1988
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| Online Access: | http://psasir.upm.edu.my/id/eprint/2681/1/Searching_Behaviour_of_Metaphycus_helvolus%2C_%28Compere%29.pdf http://psasir.upm.edu.my/id/eprint/2681/ |
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| Summary: | The host searching of Metaphycus helvolus and Scutellisa cyanea were studied under two different constant
temperatures of18 °Cand 26 °C. In the course of host-searching, both parasitoids were involved with
host-drilling, handling, preening, walking and resting. Host-feeding only occurred with M. helvolus. S.
cyanea spent more than fifty percent of the time walking at both temperatures. However, M. helvolus
spent a greater proportion of time for three activities: walking, host-drilling and preening. The amount of
time spent by M. helvolus on host-feeding was less than ten percent. The areas covered by M. helvolus and
S. cyanea for host-searching at 26°C were 933 mm2/hr and 3517 mm2/hr. respectively. |
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