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Folgerungen aus dem Auftreten der Gallen von Dreyfusia nordmannianae Eckst. (= D. nüsslini CB.) in Mitteleuropa auf ihren Generationszyklus
Author(s) -
Eichhorn O.
Publication year - 1973
Publication title -
zeitschrift für angewandte entomologie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.795
H-Index - 60
eISSN - 1439-0418
pISSN - 0044-2240
DOI - 10.1111/j.1439-0418.1973.tb01797.x
Subject(s) - psychology
On the paracycles of Dreyfusia nordmannianae Eckst. in Central Europe . Evidence is produced showing the paracycle of D. nordmannianae (= D. nüsslini ) on European silver fir is capable of producing both males and females. This is contrary to at least one opinion that adelgids on the secondary host can produce only females.