Suite aux clefs récemment présentées à la Société Linnéenne, il nous semble utile de publier aussi les localités de capture des spécimens qui se trouvent actuellement conservés dans les collections égyptiennes, ou qui ont été signalés dans la littérature, car de nombreux changements sont intervenus dans la systématique de ces espèces. Deux d'entre elles, Merodon equestris Fabricius et Chrysogaster brevicornis Loew, sont signalées pour la première fois en Egypte. D'autres avaient été mal déterminées.
The allozyme polymorphism of Diadromus pulchellus has been analysed at 22 loci, the expression of one (Est-4) being male-limited. Six loci were found polymorphic for two (Ldh-1, Ldh-2, Acp-2, Pgi and Sdh) or three (Est-3) codominant alleles. Allele frequencies are similar in males and females at four loci in a laboratory population but there are important heterozygote deficiencies in females at three of them. The possibilities of negative heterosis or assortative mating to explain this deficiency are discussed.
Newly hatched and last larval instar of Dermestes frischii Kug. were exposed to different dose levels of gamma radiation. Larval and pupal periods were increased with the increase of irradiated dose. At 10 Krad, longevity of larval period was 31.18 ± 0.98 and for pupal stage 9.54 ± 0.68 days, while for control the longevity was 16.71 ± 1.41 and 5.02 ± 1.40 days respectively. Longevity of pupal stage produced from irradiated last larval instar was more than the produced from first larval instar.
The reduction of the longevity of adult produced from irradiated immature stages was also increased with the increase of dose level.
Zusammenfassung
Gamma‐Bestrahlung der Entwicklungsstadien von Dermestes frischii Kug.
Frisch geschlüpfte und alte Larven von D. frischii wurden einer Gammabestrahlung verschiedener Dosis ausgesetzt. Die Larval‐ und Puppendauer wurde mit ansteigender Dosis beschleunigt. Bei 10 Krad betrugen die Larvendauer 31,2 und die Puppendauer 9,5 Tage gegenüber den Kontrollwerten von 16,7 und 5,0 Tagen. Die Lebensdauer von Puppen, die aus bestrahlten alten Larven entstanden, war gröβer als jene der aus jungen Larven hervorgegangenen Puppen. Die Lebensdauer der Imagines, die aus bestrahlten Entwicklungsstadien hervorgingen, verminderte sich mit Zunahme der Strahlendosis.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.