Coleman R.R.,Hawaii Institute of Marine Biology |
Coleman R.R.,University of Hawaii at Manoa |
Eble J.A.,University of West Florida |
DiBattista J.D.,King Abdullah University of Science and Technology |
And 5 more authors.
Molecular Phylogenetics and Evolution | Year: 2016
The regal angelfish (Pygoplites diacanthus; family Pomacanthidae) occurs on reefs from the Red Sea to the central Pacific, with an Indian Ocean/Rea Sea color morph distinct from a Pacific Ocean morph. To assess population differentiation and evaluate the possibility of cryptic evolutionary partitions in this monotypic genus, we surveyed mtDNA cytochrome b and two nuclear introns (S7 and RAG2) in 547 individuals from 15 locations. Phylogeographic analyses revealed four mtDNA lineages (d = 0.006-0.015) corresponding to the Pacific Ocean, the Red Sea, and two admixed lineages in the Indian Ocean, a pattern consistent with known biogeographic barriers. Christmas Island in the eastern Indian Ocean had both Indian and Pacific lineages. Both S7 and RAG2 showed strong population-level differentiation between the Red Sea, Indian Ocean, and Pacific Ocean (ΦST = 0.066-0.512). The only consistent population sub-structure within these three regions was at the Society Islands (French Polynesia), where surrounding oceanographic conditions may reinforce isolation. Coalescence analyses indicate the Pacific (1.7 Ma) as the oldest extant lineage followed by the Red Sea lineage (1.4 Ma). Results from a median-joining network suggest radiations of two lineages from the Red Sea that currently occupy the Indian Ocean (0.7-0.9 Ma). Persistence of a Red Sea lineage through Pleistocene glacial cycles suggests a long-term refuge in this region. The affiliation of Pacific and Red Sea populations, apparent in cytochrome b and S7 (but equivocal in RAG2) raises the hypothesis that the Indian Ocean was recolonized from the Red Sea, possibly more than once. Assessing the genetic architecture of this widespread monotypic genus reveals cryptic evolutionary diversity that merits subspecific recognition. We recommend P.d. diacanthus and P.d. flavescens for the Pacific and Indian Ocean/Red Sea forms. © 2016 Elsevier Inc.
Pyle R.L.,Bernice Pauahi Bishop Museum
ZooKeys | Year: 2016
For more than 250 years, the taxonomic enterprise has remained almost unchanged. Certainly, the tools of the trade have improved: months-long journeys aboard sailing ships have been reduced to hours aboard jet airplanes; advanced technology allows humans to access environments that were once utterly inaccessible; GPS has replaced crude maps; digital hi-resolution imagery provides far more accurate renderings of organisms that even the best commissioned artists of a century ago; and primitive candle-lit microscopes have been replaced by an array of technologies ranging from scanning electron microscopy to DNA sequencing. But the basic paradigm remains the same. Perhaps the most revolutionary change of all - which we are still in the midst of, and which has not yet been fully realized - is the means by which taxonomists manage and communicate the information of their trade. The rapid evolution in recent decades of computer database management software, and of information dissemination via the Internet, have both dramatically improved the potential for streamlining the entire taxonomic process. Unfortunately, the potential still largely exceeds the reality. The vast majority of taxonomic information is either not yet digitized, or digitized in a form that does not allow direct and easy access. Moreover, the information that is easily accessed in digital form is not yet seamlessly interconnected. In an effort to bring reality closer to potential, a loose affiliation of major taxonomic resources, including GBIF, the Encyclopedia of Life, NBII, Catalog of Life, ITIS, IPNI, ICZN, Index Fungorum, and many others have been crafting a “Global Names Architecture” (GNA). The intention of the GNA is not to replace any of the existing taxonomic data initiatives, but rather to serve as a dynamic index to interconnect them in a way that streamlines the entire taxonomic enterprise: from gathering specimens in the field, to publication of new taxa and related data. © Richard L. Pyle.
Gharali B.,Ghazvin Research Center for Agriculture and Natural Resource |
Evenhuis N.L.,Bernice Pauahi Bishop Museum |
Almeida J.,Rua da Povoa Dao
Zootaxa | Year: 2013
The taxonomy of the genus Platypygus Loew is summarized, previously described species are reviewed based on examination of types, and a key to known species of the genus worldwide is presented. All previously described species are diagnosed and illustrated. The male genitalia of P. ridibundus (Costa) and female genitalia of P. americanus Melander are described for the first time. Some characters supporting the monophyly of the genus Platypygus are discussed and the Nearctic Cyrtisiopsis americanus (Melander) is restored to its original combination as Platypygus americanus. The type status of Platypygus bellus Loew, P. lativentris Loew, P. pumilio Loew, and P. turkmenorum Paramonov is clarified and a lectotype is selected for Platypygus kurdorum Paramonov and P. tauricus Paramonov. New country records are given for the following species: P. bellus (Greece); P. chrysanthemi (Israel, Jordan); P. kurdorum (Israel, Jordan, Syria); P. limatus (Nepal, Thailand); P. pumilio (Greece, Turkmenistan); P. ridibundus (Cyprus, Israel, Portugal), P. titanomedea (Jordan, Turkey). Copyright © 2013 Magnolia Press.
Evenhuis N.L.,Bernice Pauahi Bishop Museum
Zootaxa | Year: 2014
Based on new evidence, the dates of publication of the journal and separate versions of parts IV-VII of Brauer & Bergenstamm's Die Zweiflügler des Kaiserlichen Museums zu Wien are given, correcting those dates previously published. Copyright © 2014 Magnolia Press.
Skeleton of Synemporion keana in situ on the floor near the lower end of Ma?hiehie Cave. More Hawaii just doubled the number of known land mammal species that are native to the islands, thanks to the discovery of a number of fossils representing a tiny bat named Synemporion keana. Found in 13 cave sites over five islands — Kauai, Oahu, Molokai, Maui and Hawaii —the fossils described in a new study represent at least 110 individuals and reveal a bat that was notably different from the only other land mammal species that is endemic to Hawaii — the Hawaiian hoary bat. In fact, combinations of the new bat's physical features were so unique that the scientists determined it was a new genus in the bat family tree, as well as a new species. [Photos: The Creatures That Call Lava-Tube Caves Home] S. keana probably measured about 2 inches (5 centimeters) long, with a skull length of about 0.4 inches (1 cm), the scientists reported. Many of S. keana's bones were found in the same locations as hoary bat fossils, suggesting to scientists that the bats shared habitats. But the new bat came to the islands much earlier than the hoary bat, arriving about 320,000 years ago, the researchers found, while the hoary bat's arrival dates back no more than 10,000 years. The bats coexisted for thousands of years until S. keana went extinct about 1,100 years ago, likely because of human colonization and the introduction of invasive species, the study authors suggested. It was 1981 when entomologist Francis Howarth, one of the study's co-authors, discovered near-complete skeletons of the bat on Maui. A distinguished research associate in natural sciences at Hawaii's Bernice Pauahi Bishop Museum, Howarth told Live Science that he was investigating the fauna, evolution and ecology of Hawaiian lava tubes — expansive, cavelike channels formed by flowing lava beneath hardened lava crusts. [Photos of a Rising Lava Lake in Hawaii] In one cave, he noticed something unusual — a small skeleton embedded in the wall. The tiny bones were overgrown with mineral crystals, "So I knew it was very, very old," Howarth said. He gathered several more accessible specimens from the cave floor, including a near-complete skeleton, and brought them to the late Alan Ziegler, a mammalogist colleague at the Bishop Museum and co-author of the new study. Howarth recalled that Ziegler already suspected the existence of a "mystery species" that had once lived on the islands, based on assorted individual bones that were discovered over time. Scientists were able to tell that — whatever this animal was — it was smaller than the hoary bat. But no skulls had been found, and there weren't enough of any other bones for scientists to identify the animal they belonged to. All of that changed with Howarth's discovery. Now that Ziegler had a near-complete skeleton as a frame of reference, individual bones found in other locations began to fall into place. Ziegler's death in 2003 temporarily suspended work on the project, which resumed with the participation of Nancy Simmons, curator-in-charge in the mammalogy department at the American Museum of Natural History in New York City, who joined the investigation in 2006. Simmons, who studies living and fossil bats, told Live Science that S. keana's skull shape — with "a distinct forehead" — told them right away that they were looking at a different species from the hoary bat, which doesn't have a well-defined forehead. But no single feature placed S. keana in a new genus. Rather, it was a mosaic of features that don't appear together in any other known bat species: a particular number of teeth, a certain shape in the molars and skull, and specific proportions of bones in their wings. "Compared across all other genera of known bats, this particular combination doesn't appear in any of them," Simmons said. While the isolated Hawaiian Islands are known to host a diverse array of birds and invertebrates, until now, the number of its native mammalian land fauna could be counted not just with one hand, but on one finger. The discovery of S. keana, which doubles the number of endemic Hawaiian land animals, is a surprise that carries an important lesson about diversity, Simmons said. "It just goes to show that you may think that you know what the diversity of something like an island fauna was like," she said. "Fossils can provide new information, which can be really interesting. And the fossil record of all mammals is always full of surprises." The findings were published online March 21 in the journal American Museum Novitates. Follow Mindy Weisberger on Twitter and Google+. Follow us @livescience, Facebook & Google+. Original article on Live Science. Copyright 2016 LiveScience, a Purch company. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.