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Articles 451 - 458 of 458
Full-Text Articles in Evolution
Serradigitus Miscionei (Scorpiones: Vaejovidae), A New Species From Southern Arizona, Richard F. Ayrey
Serradigitus Miscionei (Scorpiones: Vaejovidae), A New Species From Southern Arizona, Richard F. Ayrey
Euscorpius
A new scorpion species, Serradigitus miscionei, is described, placed in the genus Serradigitus Stahnke, 1974. These are small reddish-brown scorpions found on vertical surfaces, in the San Pedro River system and other river systems in southern, Arizona.
The Genus Chaerilus Simon, 1877 (Scorpiones, Chaerilidae) In The Indian Ocean Islands And Description Of A New Species, Wilson R. Lourenço, Bernard Duhem, Elise-Anne Leguin
The Genus Chaerilus Simon, 1877 (Scorpiones, Chaerilidae) In The Indian Ocean Islands And Description Of A New Species, Wilson R. Lourenço, Bernard Duhem, Elise-Anne Leguin
Euscorpius
A new species is described belonging to the genus Chaerilus Simon, 1877. Chaerilus andamanensis sp. n. was discovered in the Island of Little Andaman in the Indian Ocean. The new species shows affinities with Chaerilus variegatus Simon, 1877 and Chaerilus borneensis Simon, 1880, respectively described from Java and Borneo. This s the first record of the genus Chaerilus in the Andaman Islands.
On Two Subspecies Of Mesobuthus Eupeus (C. L. Koch, 1839) In Turkey (Scorpiones: Buthidae), František Kovařík, Ersen Aydın Yağmur, Victor Fet, Shahrokh Navidpour
On Two Subspecies Of Mesobuthus Eupeus (C. L. Koch, 1839) In Turkey (Scorpiones: Buthidae), František Kovařík, Ersen Aydın Yağmur, Victor Fet, Shahrokh Navidpour
Euscorpius
Examination of 268 specimens of Mesobuthus eupeus eupeus (C. L. Koch, 1839) and 1765 specimens of M. eupeus phillipsii (Pocock, 1889) from 163 localities, 92 of them in Turkey, has enabled us to establish distribution of the two subspecies and limits of their ranges in southeastern Turkey. A map of distribution of these subspecies in Turkey and a key to Turkish Mesobuthus species and subspecies are provided. Buthus eupeus philippovitschi Birula, 1905 is synonymized with Mesobuthus eupeus eupeus, and Buthus eupaeus mesopotamicus Penther, 1912 is synonymized with Mesobuthus eupeus phillipsii.
A New Species Of Orthochirus Karsch, 1892 (Scorpiones: Buthidae) From Maharashtra, India, Amod M. Zambre, Zeeshan A. Mirza, Rajesh V. Sanap, Raman Upadhye, S. M. Maqsood Javed
A New Species Of Orthochirus Karsch, 1892 (Scorpiones: Buthidae) From Maharashtra, India, Amod M. Zambre, Zeeshan A. Mirza, Rajesh V. Sanap, Raman Upadhye, S. M. Maqsood Javed
Euscorpius
A new species of scorpions of the genus Orthochirus (Buthidae) is described from Jalna, Maharashtra, India. A key to Indian scorpion of the genus Orthochirus is provided.
Compsobuthus Sindicus Sp. N. From Pakistan (Scorpiones: Buthidae), František Kovařík, Zubair Ahmed
Compsobuthus Sindicus Sp. N. From Pakistan (Scorpiones: Buthidae), František Kovařík, Zubair Ahmed
Euscorpius
Compsobuthus sindicus sp. n. of the werneri group is described from Pakistan, Sind Province, near the border with India. It is characterized chiefly by densely granulated carapace mesosoma, metasoma, telson, and femur and patella of pedipalps; the first to fourth metasomal segments bear 10 carinae. C. sindicus sp. n. is closest to C. rugosulus (Pocock, 1900) from India and Pakistan, from which it differs chiefly in having the first metasomal segment approximately as wide as long.
A Study Of The Morphology Of Tatenectes Laramiensis, A Cryptocleidoid Plesiosaur From The Sundance Formation (Wyoming, Usa), Hallie P. Street
A Study Of The Morphology Of Tatenectes Laramiensis, A Cryptocleidoid Plesiosaur From The Sundance Formation (Wyoming, Usa), Hallie P. Street
Theses, Dissertations and Capstones
Tatenectes laramiensis is a cryptocleidoid plesiosaur from the Late Jurassic Sundance Formation. This study primarily concerns a partial skeleton comprised of dorsal vertebrae, ribs, gastralia, and pelvic girdle. Even though the skeleton is incomplete, it is hypothesized that the preserved fossils are sufficient to indicate the overall body shape and also the preferred habitat of Tatenectes. Possibly the most notable of the novel characters is the pachyostotic state of the gastralia. In relation to the ribs and overall size of Tatenectes, in comparison to the gastralia in related taxa, these gastralia are disproportionately robust. The combination of these morphologies suggests …
The Use Of Isoelectric Focusing To Assess The Genetic Diversity Of The Cyprinid Fishes: Rhinichthys Cataractae And Rhinichthys Atratulus In West Virginia, Fauzia Alam Miah
The Use Of Isoelectric Focusing To Assess The Genetic Diversity Of The Cyprinid Fishes: Rhinichthys Cataractae And Rhinichthys Atratulus In West Virginia, Fauzia Alam Miah
Theses, Dissertations and Capstones
In this study, isoelectric focusing is used to separate proteins of Rhinichthys cataractae and R. atratulus and conventional staining is used to identify alleles of six genes. The objective of this work is to determine whether these methods can effectively assay isozymes that may be used to establish the relationship between anthropogenic stress and genetic diversity. Alleles for LDH-A, LDH-B, EST-A, EST-B, EST-C, and EST-D loci were identified for two species of fish, R. atratulus and R. cataractae. Both fish species are known to be sensitive to anthropogenic stress and known to be widely distributed in stressed environments. Alleles …
Cytogenetic And Isozyme Analysis Of Two Species Of North American Cyprinid Fishes : Rhinichthys Cataractae And Nocomis Micropogon From The Cheat River Drainages Of West Virginia, Syam B. Stoll
Theses, Dissertations and Capstones
Nocomos micropoqon and Rhinichthys cataractae are species of cyprinid fishes that may hybridize to produce a nominally described species Rhynichthys bowersi. Rhynichthys bowersi is a rare fish endemic to a few watersheds mostly in West Virginia, especially the Cheat River drainage. The resolution of its proper taxonomic status is presently a concern to state and federal regulatory agencies. A number of investigators have determined relatedness of cyprinid fishes by examining chromosomal structure. Telomeres and nucleolar organizer regions are chromosome structures used in inter and intraspecific phylogeny. In this study, fibroblasts from N. micropoqon and R. cataractae were first …