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Articles 61 - 71 of 71
Full-Text Articles in Biodiversity
Heritable Melanism And Parasitic Infection Both Result In Black-Spotted Mosquitofish, Lisa Horth, David Gauthier, Wolfgang Vogelbein
Heritable Melanism And Parasitic Infection Both Result In Black-Spotted Mosquitofish, Lisa Horth, David Gauthier, Wolfgang Vogelbein
Biological Sciences Faculty Publications
Male Gamhusia holhrooki (Eastern Mosquitofish) express a heritable pigmentation polymorphism approximate to 99% of males are silver, and only approximate to 1% have a melanic, black-spotted pattern. Sex-linkage, an autosomal modifier, and temperature control the expression of this heritable melanism. In many teleosts, melanin also accumulates around the site of parasitic invasion. We have identified black-spot disease in wild mosquitofish from their native habitat. Here, we demonstrate convergence upon the black-pigmented phenotype through two means: 1) heritable melanism, and 2) melanic spotting on the silver genotype that results from infection with immature encysted trematodes. Females are silver and express greater …
Genetic Diversity In The Modern Horse Illustrated From Genome-Wide Snp Data, Jessica Lynn Petersen, James R. Mickelson, E. Gus Cothran, Lisa S. Andersson, Jeanette Axelsson, Ernie Bailey, Danika L. Bannasch, Matthew M. Binns, Alexandre S. Borges, Pieter Brama, Artur Da Câmaro Machado, Ottmar Distl, Michela Felicetti, Laura Fox-Clipsham, Kathryn T. Graves, Gérard Guérin, Bianca Haase, Telhisa Hasegawa, Karin Hemmann, Emmeline W. Hill, Tosso Leeb, Gabriella Lindgren, Hannes Lohi, Maria Susana Lopes, Beatrice A. Mcgivney, Sofia Mikko, Nicholas Orr, M. Cecilia T. Penedo, Richard J. Piercy, Marja Raekallio, Stefan Rieder, Knut H. Røed, Maurizio Silvestrelli, June Swinburne, Teruaki Tozaki, Mark Vaudin, Claire M. Wade, Molly E. Mccue
Genetic Diversity In The Modern Horse Illustrated From Genome-Wide Snp Data, Jessica Lynn Petersen, James R. Mickelson, E. Gus Cothran, Lisa S. Andersson, Jeanette Axelsson, Ernie Bailey, Danika L. Bannasch, Matthew M. Binns, Alexandre S. Borges, Pieter Brama, Artur Da Câmaro Machado, Ottmar Distl, Michela Felicetti, Laura Fox-Clipsham, Kathryn T. Graves, Gérard Guérin, Bianca Haase, Telhisa Hasegawa, Karin Hemmann, Emmeline W. Hill, Tosso Leeb, Gabriella Lindgren, Hannes Lohi, Maria Susana Lopes, Beatrice A. Mcgivney, Sofia Mikko, Nicholas Orr, M. Cecilia T. Penedo, Richard J. Piercy, Marja Raekallio, Stefan Rieder, Knut H. Røed, Maurizio Silvestrelli, June Swinburne, Teruaki Tozaki, Mark Vaudin, Claire M. Wade, Molly E. Mccue
Department of Animal Science: Faculty Publications
Horses were domesticated from the Eurasian steppes 5,000–6,000 years ago. Since then, the use of horses for transportation, warfare, and agriculture, as well as selection for desired traits and fitness, has resulted in diverse populations distributed across the world, many of which have become or are in the process of becoming formally organized into closed, breeding populations (breeds). This report describes the use of a genome-wide set of autosomal SNPs and 814 horses from 36 breeds to provide the first detailed description of equine breed diversity. FST calculations, parsimony, and distance analysis demonstrated relationships among the breeds that largely …
Ancyronyx Erichson, 1847 (Coleoptera, Elmidae) From Mindoro, Philippines, With Description Of The Larvae And Two New Species Using Dna Sequences For The Assignment Of The Developmental Stages, Hendrik Freitag
Biology Faculty Publications
Ancyronyx buhid sp. n. and Ancyronyx tamaraw sp. n. are described based on adults and larvae, matched using their cox1 or cob DNA sequence data. Additional records of Ancyronyx schillhammeri Jäch, 1994 and Ancyronyx minerva Freitag & Jäch, 2007 from Mindoro are listed. The previously unknown larva of Ancyronyx schillhammeri is also described here, aided by cox1 data. The new species and larval stages are described in detail and illustrated by SEM and stacked microscopic images. Keys to the adult and larval Ancyronyx species of Mindoro and an updated checklist of Philippine Ancyronyx species are provided. The usefulness as bioindicators, …
A Reassessment Of The Conservation Status Of A Critically Endangered Neotropical Frog, Mannophryne Olmonae, Using Occupancy Modeling Techniques, Jessica Mcquigg
A Reassessment Of The Conservation Status Of A Critically Endangered Neotropical Frog, Mannophryne Olmonae, Using Occupancy Modeling Techniques, Jessica Mcquigg
Senior Independent Study Theses
Amphibian species worldwide are threatened with decline and extinction, making species monitoring an important scientific endeavor. The Bloody Bay Poison Frog, Mannophryne olmonae, a Tobago island endemic, was identified as critically endangered by the IUCN in 2004. Recent evidence suggests that a less severe conservation status may be appropriate for M. olmonae. This study employs acoustic calling surveys, land-use information, and multi-year (2011 and 2012) occupancy modeling techniques to propose an appropriate conservation status for this species. This study suggests that M. olmonae occupies a larger geographic range than was previously thought, and is not experiencing population declines. …
Worms, Nematoda, Scott Lyell Gardner
Worms, Nematoda, Scott Lyell Gardner
Scott L. Gardner Publications
Nematodes are the most speciose phylum of metazoa on earth. Not only do they occur in huge numbers as parasites of all known animal groups, but also they are found in the soils, as parasites of plants, and in large numbers in the most extreme environments, from the Antarctic dry valleys to the benthos of the ocean. They are extremely variable in their morphological characteristics, with each group showing morphological adaptations to the environment that they inhabit. Soil-dwelling forms are extremely small; many marine species have long and complex setae; and parasitic species manifest amazingly great reproductive potential and large …
A New Species Of Metathelazia (Nematoda: Pneumospiruridae) From The Lungs Of A Nine-Banded Armadillo In Central Mexico = Especie Nueva De Metathelazia (Nematoda: Pneumospiruridae) De Los Pulmones De Un Armadillo Del Centro De México, F. Agustín Jiménez-Ruiz, Rogelio Rosas-Valdez, Scott Lyell Gardner
A New Species Of Metathelazia (Nematoda: Pneumospiruridae) From The Lungs Of A Nine-Banded Armadillo In Central Mexico = Especie Nueva De Metathelazia (Nematoda: Pneumospiruridae) De Los Pulmones De Un Armadillo Del Centro De México, F. Agustín Jiménez-Ruiz, Rogelio Rosas-Valdez, Scott Lyell Gardner
Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications
Twenty-four worms were collected from the bronchioles in both lungs of a male nine-banded armadillo Dasypus novemcinctus Linnaeus, 1758 captured in Teacalco, Morelos, Mexico. The worms, herein named Metathelazia mexicana n. sp., show a constriction in the esophagus at the level of the nerve ring; males of the species have 7 pairs of papillae, fewer than the other species in the genus. Metathelazia capsulata is the most similar species to Metathelazia mexicana; however, the latter has much shorter spicules. This is the fourth species in the genus known to occur in the New World.
Se recolectó un total de …
On The Morphology And Taxonomy Of Griphobilharzia Amoena Platt And Blair, 1991 (Schistosomatoidea), A Dioecious Digenetic Trematode Parasite Of The Freshwater Crocodile, Crocodylus Johnstoni, In Australia [Critical Comment], Thomas R. Platt, Eric P. Hoberg, Leslie A. Chisholm
On The Morphology And Taxonomy Of Griphobilharzia Amoena Platt And Blair, 1991 (Schistosomatoidea), A Dioecious Digenetic Trematode Parasite Of The Freshwater Crocodile, Crocodylus Johnstoni, In Australia [Critical Comment], Thomas R. Platt, Eric P. Hoberg, Leslie A. Chisholm
Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications
Griphobilharzia amoena Platt and Blair, 1991 was originally described was originally described as a dioecious trematode, parasitic in the circulatory system of the Australian freshwater crocodile, Crocodylus johnstoni, with the female completely enclosed in a gynecophoric chamber of the male and the two worms orientated anti-parallel to each other. A recent publication questions the original description, arguing that G. amoena is monoecious and, as a consequence, the species was transferred to Vasotrema Stunkard, 1928 (Spirorchiidae) as Vasotrema amoena n. comb. We provide photomicrographic evidence that the original description of G. amoena is correct and that Griphobilharzia Platt and Blair, …
A New Intertidal Shore Bug (Heteroptera: Saldidae) From The Philippines, Hendrik Freitag, Herbert Zettel, Clister V. Pangantihon
A New Intertidal Shore Bug (Heteroptera: Saldidae) From The Philippines, Hendrik Freitag, Herbert Zettel, Clister V. Pangantihon
Biology Faculty Publications
Salduncula carmencitae sp.n. is described, its habitus and the paramere and parandria of the male are illustrated. This shore bug was found on Mindanao Island, the Philippines, in the intertidal zone. Habitat and behaviour of the species are briefly described. The distinguishing diagnostic characters of species of Salduncula Brown, 1954 are discussed.
Hydraena (Hydraenopsis) Ateneo, New Species (Coleoptera, Hydraenidae) And Other Aquatic Polyphaga From A Small Habitat Patch In A Highly Urbanized Landscape Of Metro Manila, Philippines, Hendrik Freitag
Biology Faculty Publications
Seven species of Hydraenidae, Hydrophilidae and Elmidae are recorded from temporary freshwater habitats at the Ateneo de Manila University Campus in the metropolitan area of Manila, Philippines. They were identified as Enochrus (Lumetus) fragiloides d’Orchymont, Helochares (Hydrobaticus) lepidus d’Orchymont, Helochares (Helochares) pallens (MacLeay), Hydraena (Hydraenopsis) scabra d’Orchymont, Hydraena (Hydraenopsis) palawanensis Freitag & Jäch (new record for Luzon Island), Stenelmis sp. A further hydraenid species was unknown to science and is newly described: Hydraena (Hydraenopsis) ateneo Freitag, sp. n. Aedeagus, gonocoxite, spermatheca, and female tergite X are illustrated by …
Trichoptera Of Mindoro, The Philippines I. New Species And Records From The Baroc River Catchment, Roxas, Oriental Mindoro (Insecta, Trichoptera), Hendrik Freitag, Wolfram Mey
Trichoptera Of Mindoro, The Philippines I. New Species And Records From The Baroc River Catchment, Roxas, Oriental Mindoro (Insecta, Trichoptera), Hendrik Freitag, Wolfram Mey
Biology Faculty Publications
The study of a collection of caddisflies from Mindoro yielded a total of 34 species. Eight species proved to be unknown taxa and are described in the present article as: Rhyacophila crenophysetis spec. nov., Agapetus parallelaria spec. nov., Stactobia roxasi spec. nov., Paduniella vicentis spec. nov., Paduniella prodita spec. nov., Psychomyia taugadensis spec. nov., Tinodes hypoplectis spec. nov., and Ecnomus biundularia spec. nov. A list of all collected species is provided.
The Type Localities Of The Mule Deer, Odocoileus Hemionus (Rafinesque, 1817), And The Kansas White-Tailed Deer, Odocoileus Virginianus Macrourus (Rafinesque, 1817), Are Not Where We Thought They, Neal Woodman
Neal Woodman
Among the iconic mammals of the North American West is the mule deer (Odocoileus hemionus). This species and a western subspecies of the white-tailed deer (Odocoileus virginianus macrourus) were two of seven mammals originally named and described as new species in 1817 by Constantine S. Rafinesque. Rafinesque never saw the animals that he named. Instead, he followed the then-acceptable practice of basing his new species on animals characterized in another published work, in this case the putative journal of Charles Le Raye, a French Canadian fur trader who was said to have traversed the upper Missouri River region before the …