The Leafcutter Ants: Civilization by Instinct
نویسندگان
چکیده
منابع مشابه
The ejaculatory biology of leafcutter ants.
The eusocial ants are unique in that females (queens) acquire and store sperm on a single mating flight early in adult life. This event largely determines the size (possibly millions of workers), longevity (possibly decades) and genetic variation of the colonies that queens found, but our understanding of the fundamental biology of ejaculate production, transfer and physiological function remai...
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The attine ants of South and Central America are ancient farmers, having evolved a symbiosis with a fungal food crop >50 million years ago. The most evolutionarily derived attines are the Atta and Acromyrmex leafcutter ants, which harvest fresh leaves to feed their fungus. Acromyrmex and many other attines vertically transmit a mutualistic strain of Pseudonocardia and use antifungal compounds m...
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Leafcutter ants cut trimmings from plants, carry them to their underground nests and cut them into smaller pieces before inoculating them with a fungus that serves as a primary food source for the colony. Cutting is energetically costly, so the amount of cutting is important in understanding foraging energetics. Estimates of the cutting density, metres of cutting per square metre of leaf, were ...
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The first approach focuses on giving the right stimulus to elicit the response you desire. It lays emphasis on reinforcing desired performance through feedback and activity. It is known as ‘Behaviourism’. Another approach is about mental processes, ie what the brain does with information. It focuses on ensuring the learner can make sense of information through relating it to what has been previ...
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Barriers to the use of selective digestive decontamination include concerns about emergence of resistant organisms, over-estimation of current performance in preventing ventilator-associated pneumonia (VAP), alternative methods of preventing VAP, and misunderstanding of mechanisms of action. A definitive cluster-randomised trial should be undertaken that incorporates practitioner concerns and e...
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ژورنال
عنوان ژورنال: Zoological Journal of the Linnean Society
سال: 2011
ISSN: 0024-4082
DOI: 10.1111/j.1096-3642.2011.00746.x