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Avs Corner, December 2015, Casey Wheeler, Emily Cook, Alexandra Johnson, Jamison Lynch, Kim Hill, Hayley Boyd, April Jeffcoat, Johanna Johnson
Avs Corner, December 2015, Casey Wheeler, Emily Cook, Alexandra Johnson, Jamison Lynch, Kim Hill, Hayley Boyd, April Jeffcoat, Johanna Johnson
AVS Corner
No abstract provided.
Cretonthophilus Tuberculatus , A Remarkable New Genus And Species Of Hister Beetle (Coleoptera: Histeridae) From Cretaceous Burmese Amber, Michael S. Caterino, Karin Wolf-Schwenninger, Gunter Bechly
Cretonthophilus Tuberculatus , A Remarkable New Genus And Species Of Hister Beetle (Coleoptera: Histeridae) From Cretaceous Burmese Amber, Michael S. Caterino, Karin Wolf-Schwenninger, Gunter Bechly
Publications
The early history of the beetle family Histeridae is still very obscure. In part this results from difficulty resolving phylogenetic relationships at deeper levels (Caterino & Vogler, 2002; McKenna et al., 2015a). But it is also partly a result of a sparse and poorly documented fossil record (Chatzimanolis et al., 2006). Here we describe a new genus and species of fossil histerid from Burmese amber (~99 mya), which helps to address both of these problems. Although histerid fossils have been reported from a variety of fossil localities and strata, relatively few have been adequately described. Until recently, the earliest described …
The Beetle Tree Of Life Reveals That Coleoptera Survived End-Permium Mass Extinction To Diversify During The Cretaceous Terrestrial Revolution, Duane D. Mckenna, Alexander L. Wild, Kojun Kanda, Charles 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, Margaret K. Thayer, Michael F. Whiting, John F. Lawrence, Adam Ślipinski, David R. Maddison, Brian D. Farrell
The Beetle Tree Of Life Reveals That Coleoptera Survived End-Permium Mass Extinction To Diversify During The Cretaceous Terrestrial Revolution, Duane D. Mckenna, Alexander L. Wild, Kojun Kanda, Charles 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, Margaret K. Thayer, Michael F. Whiting, John F. Lawrence, Adam Ślipinski, David R. Maddison, Brian D. Farrell
Publications
Here we present a phylogeny of beetles (Insecta: Coleoptera) 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. Our results refine existing knowledge of relationships among major groups of beetles. Strepsiptera was confirmed as sister to Coleoptera and each of the suborders of Coleoptera was recovered as monophyletic. Interrelationships among the suborders, namely Polyphaga (Adephaga (Archostemata, Myxophaga)), in our study differ from previous studies. Adephaga comprised two clades corresponding to Hydradephaga and Geadephaga. The series and superfamilies of Polyphaga were mostly monophyletic. The traditional Cucujoidea …
Entamoeba Histolytica Dmc1 Catalyzes Homologous Dna Pairing And Strand Exchange That Is Stimulated By Calcium And Hop2-Mnd1, Andrew A. Kelso, Amanda F. Say, Deepti Sharma, Leanna L. Ledford, Audrey Turchick, Christopher A. Saski, Ada V. King, Christopher C. Attaway, Lesly A. Temesvari, Michael G. Sehorn
Entamoeba Histolytica Dmc1 Catalyzes Homologous Dna Pairing And Strand Exchange That Is Stimulated By Calcium And Hop2-Mnd1, Andrew A. Kelso, Amanda F. Say, Deepti Sharma, Leanna L. Ledford, Audrey Turchick, Christopher A. Saski, Ada V. King, Christopher C. Attaway, Lesly A. Temesvari, Michael G. Sehorn
Publications
Meiosis depends on homologous recombination (HR) in most sexually reproducing organisms. Efficient meiotic HR requires the activity of the meiosis-specific recombinase, Dmc1. Previous work shows Dmc1 is expressed in Entamoeba histolytica, a eukaryotic parasite responsible for amoebiasis throughout the world, suggesting this organism undergoes meiosis. Here, we demonstrate Dmc1 protein is expressed in E. histolytica. We show that purified ehDmc1 forms presynaptic filaments and catalyzes ATP-dependent homologous DNA pairing and DNA strand exchange over at least several thousand base pairs. The DNA pairing and strand exchange activities are enhanced by the presence of calcium and the …
Extant! Living Bembidion Palosverdes Kavanaugh And Erwin (Coleoptera: Carabidae) Found On Santa Catalina Island, California Full Access, Michael S. Caterino, Katie J. Caterino, David R. Maddison
Extant! Living Bembidion Palosverdes Kavanaugh And Erwin (Coleoptera: Carabidae) Found On Santa Catalina Island, California Full Access, Michael S. Caterino, Katie J. Caterino, David R. Maddison
Publications
Kavanaugh and Erwin (1992) described Bembidion palosverdes from seven specimens from two localities on the Palos Verdes Peninsula, Los Angeles Co., CA (Pt. Vicente, ∼33.741°N, 118.411°W, and Pt. Fermin, ∼33.705°N, 118.294°W), collected in June 1964 by Derham Giuliani. The species' authors spent two days searching for specimens at the two known localities, but found no additional specimens. They suggested that the species may have become extinct prior to its formal description, citing a major 1969 oil spill as a potential factor.
Avs Corner, May 2015, Casey Wheeler, Emily Cook, Clair Profilet, Karen Taylor, Tina Rowland, Johanna Johnson
Avs Corner, May 2015, Casey Wheeler, Emily Cook, Clair Profilet, Karen Taylor, Tina Rowland, Johanna Johnson
AVS Corner
No abstract provided.
Avs Corner, January 2015, Allison Millican, Casey Wheeler, Emily Cook, Jennifer Lantzer, Karen Taylor, Megan Kelley, Tina Rowland, Johanna Johnson
Avs Corner, January 2015, Allison Millican, Casey Wheeler, Emily Cook, Jennifer Lantzer, Karen Taylor, Megan Kelley, Tina Rowland, Johanna Johnson
AVS Corner
No abstract provided.
On The Origins Of The Insect Fauna Of California's Channel Islands: A Comparative Phylogeographic Study Of Island Beetles, Michael S. Caterino, Stylianos Chatzimanolis, Maxi Polihronakis Richmond
On The Origins Of The Insect Fauna Of California's Channel Islands: A Comparative Phylogeographic Study Of Island Beetles, Michael S. Caterino, Stylianos Chatzimanolis, Maxi Polihronakis Richmond
Publications
California’s 8 Channel Islands host a large diversity of insects, the vast majority of which are shared with mainland southern California. The existence of a small number of recognized endemic species, however, suggest that, for some lineages, the islands are isolated enough to have permitted significant differentiation. Here we investigate the phylogeographic relationships of 4 beetle species (Thinopinus pictus, Hadrotes crassus, Hypocaccus lucidulus, and Nyctoporis carinata): all occurring on the mainland and on multiple (up to 6) Channel Islands. Sequences of the cytochrome oxidase I mitochondrial gene (and, for one species, an intron in the …