أعرض تسجيلة المادة بشكل مبسط
| dc.date |
2006-11-13T14:47:47Z |
|
| dc.date |
2006-11-13T14:47:47Z |
|
| dc.date |
1976 |
|
| dc.date.accessioned |
2013-10-16T07:41:56Z |
|
| dc.date.available |
2013-10-16T07:41:56Z |
|
| dc.date.issued |
2013-10-16 |
|
| dc.identifier |
http://hdl.handle.net/1957/3362 |
|
| dc.identifier.uri |
http://koha.mediu.edu.my:8181/xmlui/handle/1957/3362 |
|
| dc.description |
Mortality from various causes was recorded in a Douglas-fir
tussock moth, Orgyia pseudotsugata McD., outbreak southeast of
Coeur d'Alene, Idaho, in 1974. Observations began June 27 when
about 50 percent of the larvae were second instars and continued
until pupation. Within a 35-day period, there was a 93 percent
average reduction in population. Approximately 36.7 percent of
the population collected and reared in the laboratory died from
unknown causes; 11 percent were parasitized; and 3.4 percent were
killed by nucleopolyhedrosis virus. Phobocampe n.s. was the most
abundant parasite and attacked all instars.
Unlike most other past outbreaks, this one did not collapse at
the end of 3 years due to virus and parasites. Egg masses were
found in infested areas during the fall of 1974. |
|
| dc.language |
en_US |
|
| dc.publisher |
Missoula, MT. : Forest Environmental Protection, USDA, Forest Service, Northern Region, State & Private Forestry |
|
| dc.relation |
Report (United States. Forest Service. Northern Region) |
|
| dc.relation |
no. 76-8 |
|
| dc.relation |
Forest environmental protection |
|
| dc.title |
Natural mortality in a Douglas-fir tussock moth infestation in Idaho, 1974 |
|
| dc.type |
Technical Report |
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الملفات في هذه المادة
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لا توجد أي ملفات مرتبطة بهذه المادة.
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هذه المادة تبدو في المجموعات التالية:
أعرض تسجيلة المادة بشكل مبسط