منابع مشابه
Malaria Control: Tortoises and Hares
How long will it take to effectively control and then eliminate malaria in sub-Saharan Africa? Is it a sprint to the finish line or a crawl? Will the tortoise or hare win the malaria race? As described in this issue, Kamya and others measured temporal trends in malaria over a 2 year period in three Ugandan sites with different transmission intensities. One hundred households were randomly selec...
متن کاملSchizophrenia neuropathology: tortoises and hares.
A decade ago, the neuropathology of schizophrenia was an aging tortoise being overtaken by the young hare of molecular genetics. The smart money was on positional cloning finding the schizophrenia gene(s), after which the pathobiology of the disorder would finally be revealed. The race, however, has taken a diVerent turn. The hare is no longer sure what race it is in, nor where the finishing li...
متن کاملHaplotype diversity of mountain hare mtDNA among native mountain hares and introduced brown hares in Scandinavia
Natural hybridisation and subsequent introgression mediate the transmission of mitochondrial DNA (mtDNA) from native mountain hares (Lepus timidus) to introduced brown hares (L. europaeus). We investigated mtDNA Restriction Fragment Length Polymorphism among 62 Scandinavian mountain hares, 20 brown hares with mountain hare mtDNA and 19 presumed hybrids from 57 localities in Sweden and Norway. A...
متن کاملPerformance and mortality of farmed hares.
Performance and mortality of hares were evaluated for 2 consecutive years in a large farm in Veneto Region (Northern Italy). On average, fertile reproductive pairs (n=318) gave birth 4.8 times and produced 11.4 live leverets, weaned 8.4 leverets and produced 7.0 growing hares (60 days) every year. Mean mortality was 3.6%, 22.9%, 9.7% and 2.5% in newborn (0 to 2 days of age), suckling (3 to 25 d...
متن کاملSea Hares Use Novel Antipredatory Chemical Defenses
Numerous studies have demonstrated that chemical defenses protect prey from predation and have often assumed that these defenses function by repelling predators. Surprisingly, few have investigated the mechanisms whereby predators are affected by these defenses. Here, we examine mechanisms of chemical defense of sea hares (Aplysia californica), which, when attacked by spiny lobsters (Panulirus ...
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ژورنال
عنوان ژورنال: Nature
سال: 1889
ISSN: 0028-0836,1476-4687
DOI: 10.1038/039249c0