منابع مشابه
What arthropod brains say about arthropod phylogeny.
W hat can we learn from the brain of a single member of a species? If the brain is that of a remipede, the focus of a report by Fanenbruck et al. (1) in this issue of PNAS, the answer is something new about arthropod phylogeny. The Remipedia, discovered in 1979, are crustaceans found deep in the waters of coastal caves (2, 3). To date, twelve species of remipedes are known: one from a single ca...
متن کاملArthropod phylogeny revisited, with a focus on crustacean relationships.
Higher-level arthropod phylogenetics is an intensely active field of research, not least as a result of the hegemony of molecular data. However, not all areas of arthropod phylogenetics have so far received equal attention. The application of molecular data to infer a comprehensive phylogeny of Crustacea is still in its infancy, and several emerging results are conspicuously at odds with morpho...
متن کاملSynthesis of (-)-callicarpenal, a potent arthropod-repellent.
Callicarpenal (1), a natural terpenoid isolated from American beautyberry (Callicarpa americana), has shown significant repellent activities against mosquitoes, ticks and imported fire ants. Here we report our efficient synthetic approach to this natural product, and preliminary results of the mosquito biting-deterrent effects of callicarpenal as well as its synthetic precursors and related C(8...
متن کاملCentipedal hemocyanin: its structure and its implications for arthropod phylogeny.
The oxygen carrier hemocyanin occurs in the blood of Scutigera coleoptrata, a uniramous arthropod, as well as the crustaceans and chelicerates. The native polymer appears to be composed of substructures having the same size and electron-dense image as those of other arthropod hemocyanins but assembled into a unique multiple and arranged in a unique configuration. The simplest explanation of the...
متن کاملBundle Adjustment - A Modern Synthesis
This paper is a survey of the theory and methods of photogrammetric bundle adjustment, aimed at potential implementors in the computer vision community. Bundle adjustment is the problem of refining a visual reconstruction to produce jointly optimal structure and viewing parameter estimates. Topics covered include: the choice of cost function and robustness; numerical optimization including spar...
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ژورنال
عنوان ژورنال: Journal of Zoology
سال: 2010
ISSN: 0952-8369,1469-7998
DOI: 10.1111/j.1469-7998.1973.tb07519.x