Overwintering of the aphid parasitoids Aphelinus asychis and A. albipodus (Hymenoptera: Aphelinidae) under natural conditions in Kyoto, Japan

Variation in genome size and karyotype among closely related aphid parasitoids (Hymenoptera, Aphelinidae)

Genome sizes were measured and determined for the karyotypes of nine species of aphid parasitoids in the genus Aphelinus Dalman,1820. Large differences in genome size and karyotype were found between Aphelinus species, which is surprising given the similarity in their morphology and life history. Genome sizes estimated from flow cytometry were larger for species in the Aphelinus mali (Haldeman,...

defense reactions of the grape aphid, aphis illinoisensis (hemiptera: aphididae) to parasitoid species lysiphlebus testaceipes (hymenoptera: braconidae) and aphelinus albipodus (hymenoptera: aphelinidae)

developmental periodsof thegrapevine aphid, aphis illinoisensis shimer (hemiptera: aphididae) on the grape, vitis vinifera l., and its two parasitoid species, lysiphlebus testaceipes (cresson) (exotic) (hymenoptera: braconidae: aphidiinae) and aphelinus albipodus hayat and fatima (indigenous) (hymenoptera: aphelinidae) were studied at two constant temperatures (20 and 25 ± 2 oc), 70 ± 5 % r.h. ...

First report of Aphelinus semiflavus Howard, 1908 (Hymenoptera: Aphelinidae) in Brazil.

Molecular Evidence for a Species Complex in the Genus Aphelinus (Hymenoptera: Aphelinidae), with Additional Data on Aphidiine Phylogeny (Hymenoptera: Braconidae)

Mitochondrial 16s rDNAwas sequenced fromninedifferentpopulationsofAphelinidae and 10 of aphidiinae. Sequence divergences between populations within a species are low, ranging from 0 to 0.38%. Divergences among species within the same genus range from 0 to 8.71%. Aphelinus asychisWalker has a sequence divergence from the otherAphelinus spp. of 8.71%,which is evenhigher than the divergences among...

Temperature adaptability of two clades of Aphelinus mali (Hymenoptera: Aphelinidae) in China

Aphelinus mali (Haldeman) (Hymenoptera: Aphelinidae) is an effective natural enemy used in China to control the woolly apple aphid (Eriosoma lanigerum [Hausmann]) (WAA). Population of A. mali in China falls into two distinct genetic clades (Shandong clades and Liaoning clades). In the present results, the developmental threshold temperature of the Shandong clade (9.82 ± 1.44 °C) was lower than ...