Title |
A revision of brain composition in Onychophora (velvet worms) suggests that the tritocerebrum evolved in arthropods
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Published in |
BMC Ecology and Evolution, August 2010
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DOI | 10.1186/1471-2148-10-255 |
Pubmed ID | |
Authors |
Georg Mayer, Paul M Whitington, Paul Sunnucks, Hans-Joachim Pflüger |
Abstract |
The composition of the arthropod head is one of the most contentious issues in animal evolution. In particular, controversy surrounds the homology and innervation of segmental cephalic appendages by the brain. Onychophora (velvet worms) play a crucial role in understanding the evolution of the arthropod brain, because they are close relatives of arthropods and have apparently changed little since the Early Cambrian. However, the segmental origins of their brain neuropils and the number of cephalic appendages innervated by the brain--key issues in clarifying brain composition in the last common ancestor of Onychophora and Arthropoda--remain unclear. |
X Demographics
Geographical breakdown
Country | Count | As % |
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Japan | 1 | 20% |
United States | 1 | 20% |
Unknown | 3 | 60% |
Demographic breakdown
Type | Count | As % |
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Members of the public | 5 | 100% |
Mendeley readers
Geographical breakdown
Country | Count | As % |
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Germany | 4 | 4% |
United States | 3 | 3% |
United Kingdom | 2 | 2% |
Australia | 1 | 1% |
Russia | 1 | 1% |
Colombia | 1 | 1% |
Unknown | 87 | 88% |
Demographic breakdown
Readers by professional status | Count | As % |
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Researcher | 22 | 22% |
Student > Ph. D. Student | 21 | 21% |
Student > Bachelor | 12 | 12% |
Student > Master | 9 | 9% |
Professor > Associate Professor | 5 | 5% |
Other | 14 | 14% |
Unknown | 16 | 16% |
Readers by discipline | Count | As % |
---|---|---|
Agricultural and Biological Sciences | 60 | 61% |
Earth and Planetary Sciences | 8 | 8% |
Biochemistry, Genetics and Molecular Biology | 5 | 5% |
Unspecified | 2 | 2% |
Environmental Science | 1 | 1% |
Other | 3 | 3% |
Unknown | 20 | 20% |