Semenchenko, Ksenia A.Tuzovskij, Petr V. [AuthorE-mail: tuz@ibiw.yaroslavl.ru].
26页
查看更多>>摘要：Illustrated descriptions of seven water mite species, Aturus triangularis sp. n., Aturus similis sp. n., Aturus sikhotealinensis sp. n., Aturus primoryensis sp. n., Aturus polysetus sp. n., Aturus pulcher sp. n., Aturus insolitus sp. n., from running waters of the Far East of Russia are presented. Aturus multiclavus Kim & Chung, 1993 and Aturus multisetus Kim & Chung, 1993 are reported from Russia for the first time.
查看更多>>摘要：Tomopterna kachowskii and T. elegans from Ethiopia and Somalia, both currently synonyms of T. cryptotis, are resurrected based on morphological and molecular data. Tomopterna hieroglyphica is determined to be conspecific with T. kachowskii, with the latter taking precedence. Analysis of mitochondrial 12S rRNA, t-valine, 16S rRNA data reveals that these species differ from each other by 7.7%, differ from other described species of the genus by at least 3.0% and are only distantly related to T. cryptotis. A phylogeny of the genus is constructed, and the relationships among species are discussed. Discriminant function analysis was completed using 25 morphological measurements to determine if the seven clades identified in molecular analyses have concordant morphological difference. Translations of the original descriptions are provided, and a detailed redescription of T. elegans is included as the original description was made with only juvenile specimens. Tomopterna kachowskii and T. elegans are distinguished from other species of sand frogs by their visible tympana, presence of an outer metatarsal tubercle and moderate pedal webbing. Slightly more extensive webbing and variable presence of a discontinuous row of small glands beneath the tympanum distinguishes T. elegans from T. kachowskii.
JAIME I. RODRIGUEZ-FERNANDEZCLAUDIO J. B. DE CARVALHOCELIO PASQUINIKASSIO MICHELL GOMES DE LIMA...
9页
查看更多>>摘要：Hennig's holomorphology concept defines taxonomy as a process that synthesizes evidence from all relevant comparative sources. One possible source is metabolomics, in which the global metabolic profile is analyzed. An integral metabolic profile can bequickly obtained, nondestructively, through spectroscopy in the near infrared region. Here we use near infrared spectroscopy and chemometry to identify nine species of flies in the genus Neodexiopsis Malloch (Muscidae, Diptera). This genus is the most species-rich of the Muscoidea in the Neotropical region. Identification success demonstrates that near infrared spectroscopy may provide a new source of data to test and organize hypotheses of species delimitation. Comparing near infrared spectroscopy with DNA barcoding, spectroscopy may have even greater conceptual merit as a true barcode of life.
查看更多>>摘要：It has long been the dream of many ecologists that one day it will be possible to use a hand-held machine to identify biological specimens in the field (e.g. Janzen 2004). An analogy has been made with the so-called "tricorder" from the popular science fiction televison series Star Trek (Savolainen et al. 2005). This idea has arisen largely from the DNA barcoding community, who promote the use of a single universal DNA sequence (usually the mitochondrial cytochrome oxidase I (COI) gene) for species identification (Hebert et al. 2003). Such a device is typically imagined as using DNA as the basis for species determination. However, critics of this idea (e.g. Cameron et al. 2006) have argued that a DNA-based device would be impractical as tissue samples would need to be obtained as a source of DNA, which would necessitate handling the specimen. This suggests that the tricorder may not be such a good analogy; whereas, in Star Trek, the crew of the USS Enterprise merely had to point their tricorders at the organism in question, in reality, field-workers using a DNA-based system would have to obtain a tissue sample and load it into the machine in order to identify their specimen (Cameron et al. 2006, p.844).
查看更多>>摘要：Not long ago, Neal Evenhuis (2008) treated us to a historical review of the mental affliction known by the quaint term "mihi itch". This condition is unique to taxonomists and manifests itself in the sufferer's near uncontrollable desire to name species. The mihi itch is less prevalent than it once was, but in recent years a new "itch" has afflicted some of our fellow taxonomists. This I term the "CESA itch" (see below), and you may have seen its effects already in a taxon of interest to you.
WILLIAM B. DRIGGERS IIIERIC R. HOFFMAYEREMMA L. HICKERSONTIMOTHY L. MARTIN...
4页
查看更多>>摘要：Among the sharks inhabiting the continental shelf waters of the western North Atlantic Ocean, those within the genus Carcharhinus are the most speciose (Castro 2011). Authoritative sources agree on the presence of twelve species of carcharhinids in the northern Gulf of Mexico; however, they disagree on the presence of a thirteenth species, C. perezi (Poey), in the region (Compagno 1984, Compagno 2002, McEachran & Fechhelm 1998, Castro 2011). While the range of C. perezi is well-documented to extend from the southeastern coast of Florida and the Bahamas to Brazil (Castro 2011), published records of C. perezi occurring in the northern Gulf of Mexico are limited to two sources. In their description of Eulamia springeri, a junior synonym of C. perezi, Bigelow & Schroeder (1944) place the species in the northern Gulf of Mexico based on "a somewhat shrivelled skin with head" from a specimen collected off the west coast of Florida that was reported by the authors to be "probably of this species." Later, Springer (1960) reported the capture of a single specimen off the Mississippi River Delta in 1947; however, no detail of the capture was provided other than it being listed within a table summarizing shark species collected during exploratory fishing operations.
NSTL