Automictic parthenogenesis in the parasitoid Venturia canescens (Hymenoptera: Ichneumonidae) revisited
نویسندگان
چکیده
منابع مشابه
Automictic parthenogenesis in the parasitoid Venturia canescens (Hymenoptera: Ichneumonidae) revisited.
Both arrhenotokous and thelytokous reproduction are known to occur in the parasitoid wasp Venturia canescens. The cytological mechanism of thelytoky was previously reported to involve the formation of a restitution metaphase after the reduction division, but the exact nature of the subsequent divisions, whether reductional or equational, remained unclear. We reinvestigated the cytological mecha...
متن کاملLife tables of Venturia canescens (Hymenoptera: Ichneumonidae) parasitizing the Mediterranean flour moth (Lepidoptera: Pyralidae).
Effects of temperature, adult feeding, and host instar on life table parameters of Venturia canescens Gravenhorst (Hymenoptera: Ichneumonidae) parasitizing larvae of Ephestia kuehniella Zeller (Lepidoptera: Pyralidae) were studied in the laboratory. Experimental adults lived under various regimes of temperature (15, 20, 25, and 30 degrees C), food supply (with or without access to honey), and h...
متن کاملDiploid male production correlates with genetic diversity in the parasitoid wasp Venturia canescens: a genetic approach with new microsatellite markers
Sex determination is ruled by haplodiploidy in Hymenoptera, with haploid males arising from unfertilized eggs and diploid females from fertilized eggs. However, diploid males with null fitness are produced under complementary sex determination (CSD), when individuals are homozygous for this locus. Diploid males are expected to be more frequent in genetically eroded populations (such as islands ...
متن کاملیادگیری بویایی و دوام حافظه در زنبور Venturia canescens (Hym.: Ichneumonidae)
یادگیری نشانههای جدید در تمامی شاخه‌های زیستی جانوران از موجودات تک‌سلولی تا پستانداران به صورت‌های مختلف رخ می‌دهد. حشرات برخلاف جثه کوچک و طول عمر کوتاه، توانایی خارق العاده‌ای را در یادگیری، به خاطر سپردن و بکارگیری نشانههای مختلف محیطی مرتبط با حضور میزبان و منابع غذایی دارا می‌باشند. این توانایی از عوامل موثر در افزایش کارایی و قدرت جستجوگری دشمنان‌طبیعی همچون زنبورهای پارازیتوئید مانن...
متن کاملThelytokous parthenogenesis in eusocial Hymenoptera.
Female parthenogenesis, or thelytoky, is particularly common in solitary Hymenoptera. Only more recently has it become clear that many eusocial species also regularly reproduce thelytokously, and here we provide a comprehensive overview. Especially in ants, thelytoky underlies a variety of idiosyncratic life histories with unique evolutionary and ecological consequences. In all eusocial species...
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ژورنال
عنوان ژورنال: Genome
سال: 2000
ISSN: 0831-2796,1480-3321
DOI: 10.1139/g00-061