Biology Commons^™

Amaranthus Rudis And A. Tuberculatus, One Species Or Two? [Abstract], Donald B. Pratt, Lynn G. Clark

Faculty Publications

No abstract provided.

Identification And Evaluation Of Clinically Significant Nocardia Brasiliensis, Nocardia Farcinica And Nocardia Otitidiscaviarum Strains Using Pyrolysis Mass Spectrometry (Pyms), Kami̇l Işik, Ergi̇n Kari̇ptaş, Nevzat Şahi̇n, Alan C. Ward, Micheal Goodfellow

Turkish Journal of Biology

Out of a total of thirty-nine Nocardia strains, eight species of N. brasiliensis, seventeen species of N. farcinica and fourteen species of N. otitidiscaviarum were identified using Pyrolysis mass spectrometry. N428, N477 N. brasiliensis; N669, N233 N. farcinica; and N231, N232 N. otitidiscaviarum duplicated strains were clustered in their own groups. Strains belonging to Nocardia brasiliensis, Nocardia farcinica and Nocardia otitidiscaviarum formed distinct pyrogroups corresponding to clusters defined in the numerical study. It can be concluded that PyMS provides a rapid and reproducible method of evaluating the taxonomic significance of Nocadia species.

The Biological Flora Of Coastal Dunes And Wetlands. Ipomoea Imperati (Vahl) Griseb., Robert I. Lonard, Frank W. Judd

School of Integrative Biological & Chemical Sciences (Formerly Dept. of Biology)

Beach morning glory, Ipomoea imperati (Vahl) Griseb. = I. stolonifera (Cirillo) Gmelin is a pantropical, prostrate vine that is an important pioneer species in the backshore of coastal beaches of six continents and many islands. The landward distribution of beach morning glory is influenced by dispersal and competition, and its seaward distribution is determined by the physical environment acting through movement of seeds away from the water and high seedling mortality in the backshore. It is occasionally found in disturbed sites on barrier islands well inland from the shore. Beach morning glory tolerates low levels of soil nutrients, sand scouring, …

Taxonomic Status Of Myotis Occultus, Ernest W. Valdez, Jerry R. Choate, Michael A. Bogan, Terry L. Yates

Sternberg Museum of Natural History Faculty Publications

The taxonomic status of the Arizona myotis (Myotis occultus) is uncertain. Although the taxon was described as a distinct species and currently is regarded as such by some authors, others have noted what they interpreted as intergradation with the little brown bat (M. lucifugus carissima) near the Colorado-New Mexico state line. In this study, we used protein electrophoresis to compare bats of these nominal taxa. We examined 20 loci from 142 specimens referable to M. occultus and M. lucifugus from New Mexico, Colorado, and Wyoming. Nine of the 20 loci were polymorphic. Results show that there were high similarities among …

The Larva, Pupa And Female Of Agapetus Jocassee Morse (Trichoptera: Glossosomatidae), Jason S. Craft, John C. Morse

Publications

Agapetus jocassee is a "Species of Concern" on the lists of the U.S.D.I. Fish and Wildlife Service because it is known from only three streams of the Lake Jocassee catchment in Oconee and Transylvania counties, South and North Carolina. To assist in solving identification problems and to contribute to knowledge of the distribution of this species, larvae and pupae of A. jocassee were collected from mountain streams in North and South Carolina, reared to adulthood and identified. The larva, pupa, and female of the species are described for the first time. Characters were found in those ontogenetic stages that distinguish …

Taxonomic Status And Biogeography Of The Southern Bog Lemming, Synaptomys Cooperi, On The Central Great Plains, Gregory M. Wilson, Jerry R. Choate

Sternberg Museum of Natural History Faculty Publications

We assessed geographic and nongeographic variation among populations of the southern bog lemming (Synaptomys cooperi) in Arkansas, Iowa, Illinois, Kansas, Missouri, Nebraska, and South Dakota based on morphological data. Univariate and multivariate analyses of 15 cranial characters revealed no consistent sexual dimorphism. Geographic variation in cranial morphology of adults varied clinally, with individuals increasing in size from north to south and east to west. The largest individuals overall were from southwestern Kansas (S. c. paludis) and southwestern Nebraska (S. c. relictus), and the smallest individuals were from populations in eastern Illinois (S. c. gossii). We found only minor steps in …

Seed Testa Morphology Of 18 Species Of Rafnia Thunb. (Fam. Fabaceae, Sub-Family Papilionoideae), G. R. Richardson, R. Cross

Scanning Microscopy

Scanning electron microscopy was used to conduct a micromorphological study of testae of the seeds of 18 species of Rafnia Thunb. (Fam. Fabaceae, Sub-family Papilionoideae). The testa patterns revealed diagnostic taxonomic features which proved useful in the construction of a key for the identification of the various Rafnia species. Comparisons between air-dried freshly collected, and long-term stored herbarium specimens revealed that testa patterns remained consistent and valid for taxonomic purposes.

Scanning Electron Microscope Study Of Wohlfahrtia Magnifica (Schiner, 1862) (Diptera: Sarcophagidae) I. Structures With Parasitic And Possible Taxonomic Meaning, I. Ruíz-Martínez, M. D. Soler-Cruz, R. Benítez-Rodríguez, J. M. Pérez-Jiménez, C. Adalid-Fuentes, M. Díaz-López

Scanning Microscopy

The larval development of Wohlfahrtia magnifica (the most important dipteran causing sheep myiasis in the Palearctic region) has been studied by means of scanning electron microscopy. The ultrastructure of mouth-hooks, oral ridges, labial lobes, body spines and anterior and posterior peritremes is described for the first time. Their possible adaptations to a parasitic lifeway are also discussed. Thus, the use of new structures in the Sarcophagidae taxonomy is proposed from the point of view of their ultrastructure and adaptative morphology.

Enamel Of Yalkaparidon Coheni: Representative Of A Distinctive Order Of Tertiary Zalambdodont Marsupials, K. S. Lester, M. Archer, C. F. Gilkeson, T. Rich

Scanning Microscopy

The enamel of an incisor and a premolar of Yalkaparidon coheni was examined by scanning electron microscopy in fractured and in sectioned, polished surfaces. The enamel of both teeth demonstrated: complete, ovoid and horse-shoe shaped prisms in a Pattern 2 arrangement; a simple parallel prism course; and, enamel tubules in abundance in the premolar but restricted to the innermost enamel in the incisor. Overall, the enamel ultrastructure supports the marsupial affiliation proposed for Yalkaparidon coheni but does not unambiguously ally it with any other order of marsupials.

The observation of a significant ultrastructural difference between the anterior and posterior teeth …

A Cytological, Morphological, And Anatomical Study Of Elymus Simplex, Stephan L. Hatch

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this paper is to clarify the taxonomy, report the chromosome number, report meiotic chromosome behavior, and give the anatomy of Elymus simplex Scribner and Williams. The isotype of Elymus simplex and the type description were used to compare this and other species that have been confused.

Cytological and anatomical methods are reported as an aid in clarification of the taxonomic problem that has been associated with this species.

Euphthiracaroidea Of California Sequoia Litter: With A Reclassification Of The Families And Genera Of The World (Acarina: Oribatei), Neil A. Walker

Fort Hays Studies Series

The specimens on which this study is based were collected in litter under both the coast redwood, Sequoia sempervirens Endlicher, and Sierra redwood, S. gigantea Decaisne. The results of this study are the taxonomic discrimination of the speicies of each redwood region.

The Gross And Microscopic Morphology Of The Digestive System Of The Cutlips Minnow, Exoglossum Maxillingua (Le Sueur), Ira Lederman

Biology Honors Papers

This 18 page thesis describes taxonomy and anatomical characteristics of the minnow, including geographical distribution, ecology and feeding habits.

A Botanical Study Of The Trees And Shrubs Found On The Campus Of Ursinus College, Daniel Burnside

Biology Honors Papers

This ten page thesis gives a report of progress made in taking a botanical survey of the Ursinus College campus. Samples from all trees and shrubs of different species were collected, classified, pressed, dried and mounted. Information for plaques was created as well as a map with tree locations and a painting of an aerial view of the campus with trees plotted.

Some Aspects Of Evolutionary Theory, George M. Robertson

Fort Hays Studies Series

The present contribution is not a unified account, but is a series of essays dealing with some aspects, but is a series of essays dealing with some aspects of evolutionary theory.