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Journal Article

Journal Article

Studies on the cold-tolerance of different strains of the German cockroach, Blattella germanica (L.) (Blattodea, Blattidae) under laboratory conditions  [1994]

Haschemi, H. (Giessen Univ. (Germany). Inst. fuer Phytopathologie und Angewandte Zoologie. Abt. Vorratsschutz);

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In laboratory investigations, 5 strains of the German cockroach, Blattella germanica, with different origin were tested in respect to their cold tolerance at 0.5, and 10 degrees C, respectively. The most important results are: An outdoor strain of a refuse tip was most tolerant to low temperatures. This is not surprising, as in other investigations this strain could be observed overwintering in the field outside of the tip. When this strain was kept in the laboratory for 8 years at 22-30 degrees C and 60% r.h., the cold hardiness was reduced markedly. Strains from a bakery, from the subtropical area of Turkey, and a strain, resulting from a crossing between the outdoor and the Turkey strain, were considerably less tolerant to low temperatures. When eggs were kept under low temperatures, the hatching larvae showed a distinct better cold tolerance and were able to complete their development at field temperatures
From the journal
Anzeiger fuer Schaedlingskunde, Pflanzenschutz, Umweltschutz (Germany)
ISSN : 0340-7330

Bibliographic information

Language:
German
Type:
Summary
In AGRIS since:
1994
Volume:
67
Issue:
2
Start Page:
25
End Page:
30
All titles:
"Studies on the cold-tolerance of different strains of the German cockroach, Blattella germanica (L.) (Blattodea, Blattidae) under laboratory conditions"@eng
Other:
"Summaries (De, En)"
"9 tables; 12 ref."
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Bibliographic information

Language:
German
Type:
Summary
In AGRIS since:
1994
Volume:
67
Issue:
2
Start Page:
25
End Page:
30
All titles:
"Studies on the cold-tolerance of different strains of the German cockroach, Blattella germanica (L.) (Blattodea, Blattidae) under laboratory conditions"@eng
Other:
"Summaries (De, En)"
"9 tables; 12 ref."