J
James A. Robertson
Researcher at University of Arizona
Publications - 43
Citations - 1781
James A. Robertson is an academic researcher from University of Arizona. The author has contributed to research in topics: Sunflower seed & Monophyly. The author has an hindex of 20, co-authored 42 publications receiving 1567 citations. Previous affiliations of James A. Robertson include University of Georgia & Brigham Young University.
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Journal ArticleDOI
The beetle tree of life reveals that Coleoptera survived end‐Permian mass extinction to diversify during the Cretaceous terrestrial revolution
Duane D. McKenna,Duane D. McKenna,Alexander L. Wild,Alexander L. Wild,Kojun Kanda,Kojun Kanda,C. L. Bellamy,Rolf G. Beutel,Michael S. Caterino,Charles W. Farnum,David C. Hawks,Michael A. Ivie,Mary Liz Jameson,Richard A. B. Leschen,Adriana E. Marvaldi,Joseph V. McHugh,Alfred F. Newton,James A. Robertson,James A. Robertson,Margaret K. Thayer,Michael F. Whiting,John F. Lawrence,Adam Slipinski,David R. Maddison,David R. Maddison,Brian D. Farrell +25 more
TL;DR: A phylogeny of beetles based on DNA sequence data from eight nuclear genes, including six single‐copy nuclear protein‐coding genes, for 367 species representing 172 of 183 extant families provides a uniquely well‐resolved temporal and phylogenetic framework for studying patterns of innovation and diversification in Coleoptera.
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Phylogeny and classification of Cucujoidea and the recognition of a new superfamily Coccinelloidea (Coleoptera: Cucujiformia)
James A. Robertson,James A. Robertson,Adam Ślipiński,Matthew J. Moulton,Floyd W. Shockley,Adriano José Giorgi,Nathan P. Lord,Duane D. McKenna,Wioletta Tomaszewska,Juanita A. Forrester,Kelly B. Miller,Michael F. Whiting,Joseph V. McHugh +12 more
TL;DR: A large‐scale phylogenetic study is presented for Cucujoidea (Coleoptera), a diverse superfamily of beetles that historically has been taxonomically difficult, and many formal changes to cucujiform beetle classification are proposed.
Journal ArticleDOI
Determination of Aflatoxins in Agricultural Products: Use of Aqueous Acetone for Extraction
Walter A Pons,Alva F. Cucullu,Louise S. Lee,James A. Robertson,Anthony O Franz,L. A. Goldblatt +5 more
Journal ArticleDOI
Analysis of oil content of sunflower seed by wide-line NMR
TL;DR: Results of this study showed that the sample of sunflower seed for total oil analysis by NMR should be contained at least within the bottom 70 mm of the 130 ml sample tube, and NMR response of the standard calibration seed and sample being analyzed should be read at the same temperature, and their fatty acid compositions should be similar.
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Evolution of Oviposition Techniques in Stick and Leaf Insects (Phasmatodea)
TL;DR: The results unequivocally demonstrate that the ancestral oviposition strategy for female stick and leaf insects is to remain in the foliage and drop or flick eggs to the ground, a strategy that maintains their masquerade.