Oh bee-have!
نویسندگان
چکیده
منابع مشابه
Native and Non-Native Supergeneralist Bee Species Have Different Effects on Plant-Bee Networks
Supergeneralists, defined as species that interact with multiple groups of species in ecological networks, can act as important connectors of otherwise disconnected species subsets. In Brazil, there are two supergeneralist bees: the honeybee Apis mellifera, a non-native species, and Trigona spinipes, a native stingless bee. We compared the role of both species and the effect of geographic and l...
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Democratic Authority is a tour de force. Among its considerable virtues, David Estlund’s book manages to introduce genuinely new and plainly important ideas on well-worn topics right at the heart of modern political philosophy. Indeed, it does so not once, but several times. In this discussion, I shall concentrate on just one of those ideas, the idea of ‘normative consent’. Estlund offers his i...
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This paper examines the teaching practices of one American Indian teacher in a high school literature class. It explores the teacher's use of narrative as an instructional strategy designed to convey abstract concepts through concrete experience. The narratives engage students in critical thinking and personal re#ection, and provide them with the opportunity to make connections between social a...
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Parasitic infection can influence a variety of behavioural mechanisms in animals, but little is known about the effects of infection on the cognitive processes underlying ecologically relevant behaviours. Here, we examined whether parasitic infection alters cognitive aspects of foraging in a social insect, the bumble-bee (Bombus impatiens). In controlled experiments, we assessed the ability of ...
متن کاملتعیین روش ریزازدیادی پایههای همگروه گلابی OH × F333 و OH × F69
این پژوهش به منظور تعیین پروتکل تکثیر درون شیشهای دو پایه همگروه گلابی OH × F69 و OH × F333 در قالب چهار آزمایش مجزا انجام شد. طی آزمایش اول، اثر محیطهای MS ، QL و QL تغییر یافته روی صفات رویشی ساقهچههای درون شیشه بررسی شد. در بین این محیطها، محیط کشت QL تغییر یافته با بهترین پرآوری و کیفیت شاخه به عنوان محیط کشت پایه برای آزمایشات بعدی انتخاب شد. در آزمایش دوم و سوم ارزیابی اثر دو نوع س...
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ژورنال
عنوان ژورنال: Nature Reviews Genetics
سال: 2003
ISSN: 1471-0056,1471-0064
DOI: 10.1038/nrg1237