نتایج جستجو برای: black widow spiders
تعداد نتایج: 148330 فیلتر نتایج به سال:
Modern spiders spin high-performance silk fibers with a broad range of biological functions, including locomotion, prey capture and protection of developing offspring. Spiders accomplish these tasks by spinning several distinct fiber types that have diverse mechanical properties. Such specialization of fiber types has occurred through the evolution of different silk-producing glands, which func...
Current optimal escape theory focuses on economic distance-based models that predict that animals will flee at greater distances when risk of capture is greater. Although these models have been tested extensively on vertebrate prey animals using large approaching stimuli (e.g., humans), it has never been tested on an invertebrate generalist predator with a stimulus that is in the size range of ...
Fairly recent researches have highlighted the role that generalist predators, i.e., predators that feed on several species, have on pests in agriculture, so that their presence in agroecosystems should be fostered [26]. For instance, it is well known that toward the end of the nineteenth century, the European vineyards Vitis vinifera suffered from the accidental introduction of the plant louse ...
Accurate measurements of the masses neutron stars are necessary to test binary evolution models, and constrain star equation state. In pulsar binaries with no measurable post-Keplerian parameters, this requires an accurate estimate system's inclination radial velocity companion by other means than timing. paper, we present results a new method for measuring using synthesis code Icarus. This rel...
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