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Tsukuba Business-Academia Cooperation Support Center, Agriculture, Forestry and Fisheries Research Council Secretariat of the Ministry of Agriculture, Forestry and Fisheries, Japan (MAFF) was established in 1978 as Tsukuba Office and has been planning and operating various research facilities for supporting experimental research activities of research agencies, prefectural organizations and universities. The Tsukuba Business-Academia Cooperation Support Center is currently managing two centers, Agriculture, Forestry and Fisheries Research Infor [...]

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Journal Article

Journal Article

Citrus green bug Rhynchocoris humeralis (Thunberg) [Pentatomidae] in the Okinawa Islands [Japan]  [2001]

Sakakibara, M. (Okinawa-ken. Agricultural Experiment Station, Naha (Japan));

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When females of the citrus green bug, Rhynchocoris humeralis (Thunberg), which stopped oviposition for about three months in periods of short photo conditions (25 deg C 10L14D) were transferred into the conditions of exposure to extended photoperiod conditions (25 deg C, 16L8D), the females began to copulate in about three weeks and resumed oviposition in five weeks. Most egg-clusters (62.3%) contained 14 eggs. Egg periods varied from one to six days. First instar nymphs ecdysed on Day 3 after hatching, with high survival rates (nearly 100%). Nymphal performance, i.e. 2nd to 5th instar durations and survival rates, varied in accord with the diets provided. The highest performance was obtained when fed Satsuma mandarin (Citrus unshiu). Nymphal duration and mortality were 5.0 =+ -0.0 d and 0% in the second instar, 5.0 =+- 0.2d and 2.0% in the third instar, 6.1 =+- 0.1d and 2.1% in the fourth instar, and 8.0 =+- 0.0d and 0% in the fifth instar, respectively. The overall nymphal duration was 27.0 =+- 0.0d, with 6.0% mortality. When fed fruits of Tankan tangors (Citrus sinensis * tangor), "Siikwaasjaa" mandarin (Citrus depressa, or large round kumquat (Fortunella classifolid) , nymphal performance was inferior to that obtained by diets of Satsuma mandarin fruits. Adult females began to oviposit three weeks after emergence. Citrus fruits sucked by adults and nymphs exhibited many black stains.
From the journal
Bulletin of the Okinawa Agricultural Experiment Station (Japan)
ISSN : 0387-7841

Bibliographic information

Language:
Japanese
Type:
Summary
In AGRIS since:
2005
Issue:
23
Start Page:
64
End Page:
69
All titles:
"Citrus green bug Rhynchocoris humeralis (Thunberg) [Pentatomidae] in the Okinawa Islands [Japan]"@eng
Other:
"Summaries (En, Ja)"
"8 plates; 4 fig.; 8 ref."
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Bibliographic information

Language:
Japanese
Type:
Summary
In AGRIS since:
2005
Issue:
23
Start Page:
64
End Page:
69
All titles:
"Citrus green bug Rhynchocoris humeralis (Thunberg) [Pentatomidae] in the Okinawa Islands [Japan]"@eng
Other:
"Summaries (En, Ja)"
"8 plates; 4 fig.; 8 ref."