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Propagation Of Quaking Aspen (Populus Tremuloides Michx.) From Root Cuttings, Karen Elizabeth Burr

Aspen Bibliography

Lateral root cuttings were collected at five quaking aspen (Populus tremuloides Michx.) clones in Larimer County, Colorado on October 2, 1977 and May 30, 1978. The October 1977 root cuttings were stored eight months in air-tight plastic bags at 0 to 4°C. On June 1, 1978 the stored (October 1977) and the fresh (May 1978) root cuttings were planted in a greenhouse propagation bench. All sprouts that developed were allowed to grow on half of the 10-cm long root cuttings randomly selected as controls. On the remaining half of the root cuttings, designated pruned, all but the tallest sprout were …

In Vitro Renin Secretory Responses To Pg₂, Pgf₂Α, Indomethacin And Adrenergic-Receptor Blocker Administration, Brett C. Sheppard

Master's Theses

No abstract provided.

Vole Population Cycles: A Case For Kin Selection?, Eric Charnov, J.P. Finerty

Biology Faculty & Staff Publications

Kin selection, as evidenced by aggression between individuals with a low coefficient of relation, may be a significant contributing factor in vole population cycles. Demographic and behavioral studies support this idea.

Seasonal Sexual Cycle Of Nerodia Taxispilota (Serpentes: Colubridae) At The Northeastern Edge Of Its Range, David Roland White

Master's Theses

The seasonality of the sexual cycle of Nerodia taxispilota at the northeastern edge of its range was elucidated from specimens collected over a two-year period (1978-1979) from the Appomattox River near Hopewell, Virginia. The investigation centered on morphological changes in the testis of males and vitellogenesis and embryo development in females. Related reproductive parameters also studied were body size differences, seasonal sex ratios, comparative tail lengths, and tail mutilation.

Male and female cycles closely resembled those of other temperate zone colubrids. Spermatogenesis began in May and testis size peaked in late August. Testis length showed a time lag when compared …

Nebraska Trapping, George Schildman, Frank Andelt, Jim Brunner

Nebraska Game and Parks Commission: Publications

Fur bearers and trapping played an important role in the exploration and development of Nebraska. The harvest of our fur-bearer resource is part of every Nebraskan's heritage. Wise use of the resource and consideration for other people's property and personal rights can insure that trapping will remain a part of the heritage of future generations. The purpose of this publication is to help insure this heritage ... through the educational process. Knowledge of and respect for the resource, as well as consideration for other people, are the keys to perpetuating trapping as an outdoor activity. While primarily designed to assist …

Observations On The Genus Vaucheria (Xanthophyceae, Vaucheriales) From The Gulf Of Mexico, Richard A. Pecora

Gulf and Caribbean Research

Investigations of algal mats from several locations along the Gulf of Mexico from Cameron Parish, Louisiana, to Manatee County, Florida, were conducted from February 1979 to February 1980. Habitat preference, distribution, and morphology are reported herein for nine species and one variety of Vaucheria de Candolle. Five taxa–V. arcassionensis, V. aversa, V. coronata, V. prolifera var. reticulospora, and V. pseudogeminata–are first reports for the Gulf of Mexico coastal region. Vaucheria velutina (=V. thuretii), the most abundant taxon identified in the region, is common in diverse habitats. Vaucheria prolifera var. reticulospora is reported for …

Studies On Amyloodinium Ocellatum (Dinoflagellata) In Mississippi Sound: Natural And Experimental Hosts, Adrian R. Lawler

Gulf and Caribbean Research

Four species of parasitic dinoflagellates have been found to occur naturally on the gills and fins of Mississippi Sound fishes: Amyloodinium ocellatum (Brown 1931) Brown and Hovasse 1946, Oodinium cyprinodontum Lawler 1967, and two undescribed species. Sixteen of 43 species of fishes examined had natural gill infections of A. ocellatum. Seventy-one of 79 species of fishes exposed to A. ocellatum dinospores were susceptible, and succumbed, to the dinoflagellate. Eight did not die even though exposed to numerous dinospores. The most common signs in an infested fish were spasmodic gasping and uncoordinated movements. Trophonts of A. ocellatum were found on …

Origins And Effects Of Spartina Wrack In A Virginia Salt Marsh, Thomas G. Reidenbaugh, William C. Banta

Gulf and Caribbean Research

Movements of mats of tidal wrack (dead Spartina alterniflora) and impacts of the wrack were followed in color infrared aerial photographs of a sloping foreshore salt marsh on Wallops Island, Virginia. Tidal wrack may be stranded in high marsh, where it decomposes, or it may be temporarily stranded at lower elevations. The wrack kills underlying Spartina alterniflora in low marsh and in the transition zone from low to high marsh. Wrack is the major cause of devegetated areas within the marsh, but these areas eventually revegetate, and do not evolve into pans. There are substantial short-term reductions in S. …

Occurrence And Seasonality Of Perkinsus Marinus (Protozoa: Apicomplexa) In Mississippi Oysters, John Ogle, Katherine Flurry

Gulf and Caribbean Research

Oysters from four reefs in Mississippi Sound, sampled over a period of 25 months, were found to have a low prevalence of the protozoan parasite Perkinsus marinus. The greatest values were 80% prevalence, and 0.88 weighted incidence recorded for oysters from Biloxi Bay, Mississippi.

Lepidactylus Triarticulatus N. Sp., A New Haustoriid Amphipod From The Northern Gulf Of Mexico, Philip B. Robertson, Charles R. Shelton

Gulf and Caribbean Research

A new haustoriid amphipod, Lepidactylus triarticulatus n. sp., from the northern Gulf of Mexico is described and illustrated. The known range is from northern Padre Island, Texas, to Grand Isle, Louisiana. The species is ecologically plastic. On surf-exposed sandy beaches it is most abundant at the highest intertidal levels, but in fine-grained sands of wave-sheltered localities it occurs throughout the intertidal region into shallow subtidal depths. In central Texas bays it has been collected subtidally at salinities as low as 10 ppt. There are differences in morphological details of peraeopod 7 between the intertidal and subtidal populations which we regard …

Prevalence Of Fimeria Funduli (Protozoa: Eimeriidae) In The Longnose Killifish Fundulus Similis From Horn Island, Mississippi, John W. Fournie, Mobashir A. Solangi

Gulf and Caribbean Research

Eimeria funduli occurred in Fundulus similis from Horn Island, Mississippi, during 1980, in contrast with its apparent absence during 1978 and 1979. Prevalence of the parasite appears to be related to the unusually low salinity in Mississippi Sound, and in ponds and off the beaches of Horn Island. The low salinity may have promoted the migration of infective intermediate hosts from inshore waters to the island.

Ultrastructural Features Of Spicules Of Five Species Of Minnesota Sponges, Louise A. Rollins, Lynn C. Hyland

Journal of the Minnesota Academy of Science

No abstract provided.

Winter Sampling Of Benthic Stream Fishes In Minnesota With A One-Man Net, James E. Erickson

Journal of the Minnesota Academy of Science

Newly designed one-man nets were used extensively between 1973 and 1977 to collect fishes in a variety of stream habitats in southeastern Minnesota. They proved to be especially effective In winter sampling of benthic stream fishes such as Etheostome zonale, Etheostome ceeruleum, Percina phoxocephala, Percina shumardi, Percina caprodes, Rhinichthyes cataractae, and Noturus flavus. Effectiveness and potential importance of these one-man nets as winter sampling devices was demonstrated during three consecutive winters of use In the Cannon River at Welch, Goodhue County, Minnesota.

Association Of Aquatic Insects To Macrophytes In An Agricultural Drainage Ditch, Kevin King, John Flypaa, Henry W. Quade

Journal of the Minnesota Academy of Science

The aquatic insects associated with five species of aquatic macrophytes were collected and identified from a drainage ditch in Le Suer County. A total of 21,160 specimens from eight orders were recovered with Diptera being the dominant. Tests of association, using the Coefficient of Community and Percent Similarity revealed a unique community associated with Potamogeton nodosus. Further, the authors found that the same information generated from the study could have been accomplished without the detailed taxonomy.

Some Optimal Growth Media For Use In The Botany Classroom, Marshall D. Sundberg

Journal of the Minnesota Academy of Science

Cultures of various bacteria and fungi are often used in introductory botany classes. In most cases the students are simply asked to examine these colonies or to prepare a microscope slide. Directions are given in this paper for the preparation of optimal growth media which may be consumed by the student. This provides a new twist to otherwise routine laboratory exercises.

A Partial Bibliography Of Cyprinodon Variegatus (Osteichthyes: Cyprinodontidae), David A. Bengtson

Gulf and Caribbean Research

A partial bibliography of the sheepshead minnow Cyprinodon variegatus Lacépède, 1803, is presented. Scientific works related to systematics and general biology are listed along with references to recent work involving toxicological bioassays. An extensive search of the literature on parasites of C. variegatus was not conducted.

Vertebral Anomaly In Fundulus Similis, Charles S. Manning

Gulf and Caribbean Research

On May 11, 1978, a longnose killifish, Fundulus similis. exhibiting an extreme lordotic, scoliotic condition was collected on the north shore of Big Lagoon in Escambia County, Florida. The specimen was held for observation in a flow-through seawater aquarium for several weeks prior to being preserved and placed in the Gulf Breeze Environmental Research Laboratory Museum (No. AN-2146).

Benthic Macroinvertebrates In A Hydrilla Infested Central Florida Lake, Stefani L. Scott

Retrospective Theses and Dissertations

Benthic macroinvertebrates and physicochemical parameters were monitored simultaneously with hydrilla in a central Florida lake. Changes in the benthos were described in relation to plant growth. Twenty-seven of the 54 taxa of benthic macroinvertebrates collected were members of the Family Chironomidae. Chironomids and oligochaetes numerically dominated the benthos, comprising of 82% of the individual collected. The greatest numbers of species and individuals were found during the winter when hydrilla biomass was low. Hydrilla biomass ranged from 0.385 kg/m2 in April, 1977 to 2.275 kg/m2 in October, 1977. Low numbers of species and individuals were collected from bottom sediments during summer …

Enterovirus And Bacterial Evaluation Of Mississippi Oysters, R.D. Ellender, D.W. Cook, V.L. Sheladia, R.A. Johnson

Gulf and Caribbean Research

The numbers of enteric viruses and fecal coliform bacteria in oysters and water samples collected along the Mississippi Gulf coast during 1979 were determined. Ten viral isolates, representing members of the poliovirus group, were identified from an approved oyster harvesting site. The number of virus isolations increased to 51 when oysters were collected from a prohibited harvesting location. The majority of isolates were identified as poliovirus type 1 or 2, coxsackievirus B3 and B4, and echovirus type 24. Fecal coliforms in water samples collected at approved and prohibited locations confirmed the classification assigned to each area by the Mississippi State …

Growth And Residency Of Juvenile Fishes Within A Surf Zone Habitat In The Gulf Of Mexico, Timothy Modde

Gulf and Caribbean Research

Over a 32-month study period, 154,469 fish representing 76 species were collected from the Gulf shore of Horn Island, Mississippi. Fishes collected were identified as either resident or migrant species according to length frequency data. The migrant component, dominated numerically by Anchoa lyolepis, represented the greatest number of species and individuals collected. Resident fishes constituted only six species but comprised 42.0% of all fish captured. The more abundant species residing within the Horn Island surf zone, Trachinotus carolinus, Menticirrhus littoralis, and Harengula jaguana, appeared to utilize this habitat as a nursery for approximately 3 months throughout …

Investigation Of The Streambed Oxygen Demand Of Fourche Creek, Pulaski County, Arkansas, John D. Rickett, Patrick Edelmann

Journal of the Arkansas Academy of Science

No abstract provided.

Food Of Bluegill And Longear Sunfish In Degray Reservoir, Arkansas, 1976, Horace E. Bryant, Thomas E. Moen

Journal of the Arkansas Academy of Science

Stomach contents were examined from 544 bluegill (Lepomis macrochirus) and 709 longear sunfish (L. megalotis) collected from nearshore areas of DeGray Reservoir April-November 1976. Major foods of bluegill (percentage of total weight of food in parentheses) were insects (33), bryozoa (7.3), planktonic crustaceans (6.5), and plant materials (15.4). The major food items contributing to the diet of longear sunfish were insects (52.6%), crayfish (12.5%), fish (7.4%), and plant material (6.7%). Although bluegill and longear sunfish are closely related species, their diets were not as similar as expected: bluegill consumed zooplankton, adult dipterans, and adult ephemeropterans associated with limnetic areas; while …

Food Of Largemouth Bass (Micropterus Salmoides) In Degray Reservoir, Arkansas, 1976, Horace E. Bryant, Thomas E. Moen

Journal of the Arkansas Academy of Science

Stomach contents were examined from 748 largemouth bass, Micropterus salmoides (<125 mm total length), collected from DeGray Reservoir during April-November 1976. Fish constituted 59% by weight of the total diet and occurred in 81% of the stomachs; crayfish made up nearly 38% of the weight and occurred in 24% of the stomachs. Sunfish, the principal fish food (about 28% by weight), were observed in 36% of the stomachs. Shad were the second most important prey (23% by weight and 29% frequency in occurrence). Crayfish constituted about 42% of the total weight of the food of bass 200 mm long or longer, but only 12% in bass less than 200 mm. Crayfish consumption was greatest during the fall.

Effect Of Cold Shock On The Metabolism Of Trichomonas Gallinae, James J. Daly

Journal of the Arkansas Academy of Science

The influence of cold (4°C) used to prepare cells for metabolic investigations was examined with Trichomonas gallinae in this study. Cells washed with cold diluent in a refrigerated centrifuge were found to be less stimulated in their gas production at 37°C when exposed to glucose or maltose than cells washed at room temperature conditions. Such cold-prepared cells had higher initial glycogen contents after washing, faster endogenous glycogen degradation rates when incubated at 37 °C, but lower glycogen synthesis in the presence of glucose or maltose when compared to cells not prepared in the cold. However, uptake of glucose and maltose …

Inventory Of The Decapod Crustaceans (Crayfishes And Shrimps) Of Arkansas With A Discussion Of Their Habitats, Raymond W. Bouchard, Henry W. Robison

Journal of the Arkansas Academy of Science

The freshwater decapod crustaceans of Arkansas presently consist of two species of shrimps and 51 taxa of crayfishes divided into 47 species and four subspecies. The shrimps are represented by Macrobranchium ohione and Palaemonetes kadiakensis. The crayfish fauna is the largest of any state west of the Mississippi River reflecting the variety of habitats within Arkansas as a result of the geologic diversity in the state. The Ozark Plateaus and Ouachita provinces are dominated by the genus Orconectes, while in the Gulf Coastal Plain Procambarus is the most conspicuous group. Other crayfish stocks present include Cambarus, found predominantly in the …

Fishes Of Rock Creek, Sharp County, Arkansas, F. Allen Carter, John K. Beadles

Journal of the Arkansas Academy of Science

A survey of the fishes of Rock Creek in north central Arkansas was made on 9-10 November, 1978, and 15-16 March, 1979. Field collections were made using a minnow seine and backpack shocker. The creek system was inhabited by 28 species of fish representing eight families. Fish collections were typical of a small Ozark stream. The most abundant species were: Campostoma oligolepis Hubbs and Greene, largescale stoneroller; Notropis telescopus (Cope), telescope shiner; Notropis zonatus (Putnam), bleeding shiner; Moxostoma duquesnei (Lesueur), black redhorse; Etheostoma blennioides Rafinesque, greenside darter; Etheostoma caeruleum Storer, rainbow darter; Etheostoma euzonum (Hubbs and Black), Arkansas saddled darter; …

Estimated Growth And Standing Crop Of Largemouth Bass (Micropterus Salmoides) From Lake Elmdale, Alex Zdinak Jr., Raj V. Kilambi, Marvin L. Galloway, John E. Mcclanahan, Clark Duffe

Journal of the Arkansas Academy of Science

Electro-fishing gear was used to make shoreline population estimates of largemouth bass (Micropterus salmoldes) in Lake Elmdale, Washington County, Arkansas, during September 1979. The population density was estimated to be 1541 bass/Km² with a standing crop of 30.4 kg/ha. The length-weight relationship was calculated as W = 0.00001 504L^2.97, and the total length-scale radius relationship as L = 41.75 + 1.23 St. The average condition coefficient(K) was 1.31. In comparison with four other Arkansas lakes the population density of largemouth bass was highest in Lake Elmdale while the growth rate was lowest.

Systematic Status Of The Fishes Of Genus Campostoma (Cyprinidae) Inhabiting The Major Drainages Of Northern Arkansas, Stephen A. Sewell, John K. Beadles, V. Rick Mcdaniel

Journal of the Arkansas Academy of Science

A total of 6980 morphometric and meristic data points were analyzed from specimens previously identified as Campostoma anomalum pullum and Compostoma oligolepis from all areas of their Ozark ranges in Arkansas. Data were analyzed using the Statistical Analysis System (SAS) and IBM 370 Computer System (HASP II). An attempt was made to establish separation points through multivariate analysis (MANOVA) by taxon and watershed. Additional analyses included factor analysis and discriminant function analysis. Scale count frequencies were analyzed using computer program MINITAB. MANOVA revealed a lack of consistent separation points, and Ozark populations were shown to be distinct and highly variable …

Aquatic Macroinvertebrates Of Wapanocca National Wildlife Refuge, George L. Harp, Phoebe A. Harp

Journal of the Arkansas Academy of Science

No abstract provided.

Significant Additions To The Molluscan Fauna Of The Illinois River, Arkansas, Mark E. Gordon, Arthur V. Brown

Journal of the Arkansas Academy of Science

No abstract provided.