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Evolution Of Group I Introns In Porifera: New Evidence For Intron Mobility And Implications For Dna Barcoding, Astrid Schuster, Jose V. Lopez, Leontine E. Becking, Michelle Kelly, Shirley A. Pomponi, Gert Wörheide, Dirk Erpenbeck, Paco Cárdenas
Evolution Of Group I Introns In Porifera: New Evidence For Intron Mobility And Implications For Dna Barcoding, Astrid Schuster, Jose V. Lopez, Leontine E. Becking, Michelle Kelly, Shirley A. Pomponi, Gert Wörheide, Dirk Erpenbeck, Paco Cárdenas
Biology Faculty Articles
Background
Mitochondrial introns intermit coding regions of genes and feature characteristic secondary structures and splicing mechanisms. In metazoans, mitochondrial introns have only been detected in sponges, cnidarians, placozoans and one annelid species. Within demosponges, group I and group II introns are present in six families. Based on different insertion sites within the cox1 gene and secondary structures, four types of group I and two types of group II introns are known, which can harbor up to three encoding homing endonuclease genes (HEG) of the LAGLIDADG family (group I) and/or reverse transcriptase (group II). However, only little is known about …
First Record Of The Megamouth Shark, Megachasma Pelagios, (Family Megachasmidae) In The Tropical Western North Atlantic Ocean, Grisel Rodriguez-Ferrer, Bradley M. Wetherbee, Michelle Schärer, Craig Lilyestrom, Jan P. Zegarra, Mahmood Shivji
First Record Of The Megamouth Shark, Megachasma Pelagios, (Family Megachasmidae) In The Tropical Western North Atlantic Ocean, Grisel Rodriguez-Ferrer, Bradley M. Wetherbee, Michelle Schärer, Craig Lilyestrom, Jan P. Zegarra, Mahmood Shivji
Biology Faculty Articles
Background: A new record of Megachasma pelagios is here reported for the tropical western North Atlantic Ocean from Puerto Rico. Results: On December 10, 2016, a tourist reported an unusual stranded shark on Mojacasabe Beach, Cabo Rojo, on the southwestern coast of Puerto Rico. Visual examination of the carcass and mitochondrial DNA analysis from a dorsal fin sample revealed it to be a 457 cm female megamouth shark. Conclusion: This record represents the first record of M. pelagios for the tropical western North Atlantic Ocean within the Caribbean Sea of southwest Puerto Rico and only the second record of M. …