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Hyla Multifasciata, Rafael O. De Sá

Biology Faculty Publications

Hyla multifasciata is a medium to large species in the albopunctata species group, adults ranging in size from 42 - 61 mm SVL (mean male SVL = 48 mm, mean female SVL = 53 mm). The head is longer than wide. The snout is rounded in dorsal view, whereas in lateral view it is rounded and protrudes slightly beyond the mandible. The canthus rostralis is rounded and distinct, the loreal region is concave, and the internarial region is convex. The eyes are large, approximately twice the diameter of the tympanum. The tympanum is separated from the eye by a distance …

Growth Of Bluegill, Largemouth Bass, And Channel Catfish In Relation To Fish Abundances, Food Availability, And Other Limnological Variables, Sean P. Callahan

Masters Theses

Bluegill, largemouth bass, and channel catfish are widely distributed and popular sports species. We assessed growth of sympatric populations of these species in 14 reservoirs throughout Illinois, and attempted to relate growth to environmental factors. Principal components analysis (PCA) classified the lakes using 20 morphometric and limnological variables. We examined growth rate relationships with the principal components, via correlations, and also developed simple and multiple regression models using individual variables. Using size-specific growth for two size classes, percent littoral zone of a lake was correlated with growth of both channel catfish (300 and 450 mm) and small bluegill (50 mm). …

Parental Investment In The Red-Eared Slider Turtle, Trachemys Scripta, Michael D. Marlen

Masters Theses

This study was conducted to determine egg and hatchling components of the red-eared slider (Trachemys scripta). In addition, energy components transferred from egg to hatchling were used to determine the level of parental investment in embryogenesis and hatchling care. Eggs of the red-eared slider, collected from central Illinois ponds, were obtained by inducing gravid females to lay by an injection of oxytocin. Egg and hatchling lipids were extracted with petroleum ether while egg and hatchling protein content was determined using the micro-Kjeldahl procedure. Eggs averaged 70.7% water by mass, and dry mass of whole eggs and egg yolks averaged 2.4g …

Annual Review Of The World Pheasant Association 1995/1996, World Pheasant Association

Galliformes Specialist Group and Affiliated Societies: Reports and Other Materials

Pheasant Specialist Group, Peter J. Garson

Partridge, Quail and Francolin Specialist Group, Simon D. Dowell

Grouse Specialist Group, Matt Ridley

The Seventh International Grouse Symposium, Fort Collins, USA, Anne Westerberg

Megapode Specialist Group, René W. R. J. Dekker

Captive Breeding Advisory Committee, Han Assink

WPA-South Asia Regional Office and captive crested argus, Rahul Kaul

Brown eared-pheasant project report. Zhang Zheng-wang

Saving the Blyth's tragopan. Ron Sumner

Why are Lophura pheasants so variable? Geoffrey Davison

Recent rare pheasant observations in Chin State, West Myanmar (Burma), Ben King, Dave Farrow, Craig Robson, Hugh Buck. Tim Fishe

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 …

Influence Of Adjacent Seagrass On The Fish Assemblages Off Sandy Beaches, Matthew A. Vanderklift

Theses: Doctorates and Masters

As we attempt to maintain marine biodiversity mainly by focussing on habitats, we need to understand how marine biodiversity is affected by seagrass loss. Although managers and researchers widely acknowledge that habitat loss results in changes to marine biodiversity, quantitative knowledge of these changes is generally poor. In this study, fish assemblages (as one component of the biodiversity of sandy beaches) were examined in Cockburn Sound, Western Australia, to assess patterns that may be related to presence or absence of adjacent seagrass beds, If consistent patterns are evident, they may enable predictions regarding the effects of seagrass loss on the …

Comparison Of The Effects Of Aerobic Dance To Water Aerobic Training On Maximal Oxygen Consumption, Terri L. Bedford, Tamara A. Dusterwinkle, Darcy J. Hoppman

Masters Theses

Water aerobics is one mode of exercise that is gaining popularity. Water aerobics allows adults who participate in an exercise program to improve their cardiorespiratory fitness. The purpose of this study was to determine if water aerobic training is as effective as land dance aerobic training in improving cardiorespiratory fitness in sedentary healthy adults. Eighteen subjects participated in this study; nine in dance aerobics and nine in water aerobics. Before and after eight weeks of training, subjects performed a graded maximal exercise test on a Schwinn Air-Dyne while maximal oxygen uptake was measured via a Beckman Metabolic Cart. ANCOVA was …

Acidic Marine Biotoxins Implicated In Diarrhetic Shellfish Poisoning, Eoin P. Carmody

Theses

An okadaic acid (OA) etiology has been demonstrated for most outbreaks of diarrhetic shellfish poisoning (DSP) in Europe, An isomer of OA, dinophysistoxin-2 (DTX-2), has recently been found in Irish waters and, in 1991 and 1994, was the major toxin during prolonged infestations in cultivated mussels (Mytilus edulis) along the south-west coast of Ireland.

The OA class of DSP toxins have been analysed by HPLC using modified versions of three established fluorescent derivatisation methods. A ‘dual tag’ method for the confirmation of specific toxins has also been developed.

Survey work has been carried out over the past four years on …

Prospects For Biological Control Of Livestock Ticks, Rhipicephalus Appendiculatus And Amblyomma Variegatum, Using The Entomogenous Fungi Beauveria Bassiana And Metarhizium Anisopliae, Godwin P. Kaaya, Esther N. Mwangi, Elizabeth A. Ouna

All Peer-Reviewed Publications

Both Beauveria bassiana and Metarhizium anisopliae induced, approximately 30% mortalities in adult Rhipicephalus appendiculatus feeding on rabbits while M. anisopliae induced a mortality of 37% in adult Amblyomma variegatum. Both fungal species induced reductions in engorgement weights, fecundity, and egg hatchability in adult A. variegatum. M. anisopliae reduced fecundity by 94% in A. variegatum. Furthermore, B. bassiana reduced egg hatchability to 0%, while 11% of the infected females failed to lay eggs. In Zebu cattle naturally infested, with R. appendiculatus in the field, both B. bassiana and M. anisopliae induced high mortalities ranging from 76-85%, a remarkable reduction in fecundity …

Channel Catfish, Ictalurus Punctatus, T-Lymphocyte Mitogenic Responses To Outer Membrane Proteins And Lps Of The Gram Negative Rod Bacterium, Edwardsiella Ictaluri, Barry Revis Hamilton

Morehead State Theses and Dissertations

A thesis presented to the faculty of the Department of Biological and Environmental Sciences at Morehead State University in partial fulfillment of the requirements for the Degree of Master of Science in Biology by Barry Revis Hamilton on December 8, 1995.

Futuristic Application Of New Reproductive Technologies, Charles R. Looney

Range Beef Cow Symposium

Animal reproduction has enjoyed the most impact and progress of all the animal sciences in the development of new options for cattle producers. With the development of embryo transfer (ET) in the mid-1970's, animal reproduction has entered a new era of technical achievement. During this time a strong embryo transfer industry has enjoyed new advanced techniques of estrous cycle regulation, follicular growth dynamics and improved procedures in embryology. These and other advances in molecular biology will likely lead to changes in the traditional approaches to livestock breeding and further stimulate researcher's interest in areas of genetic engineering.

The objectives of …

Just How Important Are Carcass Epds?, Ronnie D. Green

Range Beef Cow Symposium

The National Beef Quality Audit, conducted by Colorado State, Texas A&M and Texas Tech Universities in 1992, was a "wake-up" call to the beef cattle industry. The results of the audit of the slaughter cattle population, conducted in 28 plants from across the U.S., indicated a total of some $280 in inefficiencies for each fed steer and heifer produced in the beef business. Furthermore, when these inefficiencies were categorized, it became apparent that the majority of these losses occur due to excess fat production with lower consistency in taste than desired. If the industry is to remain a viable sector …

The Use Of Composite Bulls – Long Term Benefits And Challenges, James A. Gosey

Range Beef Cow Symposium

Composite bulls won't perform magic or offset poor management but they offer a tool to help solve production/management problems and optimize production for a wide range of environments.

The impact of crossbreeding through heterosis (hybrid vigor) and utilization of breed differences (complementarity) for major traits like reproduction, calf survival, maternal ability, growth, longevity and other fitness traits is powerful. The cumulative effect of crossbreeding can increase calf weight weaned per cow exposed by 20 percent.

Conventional crossbreeding programs fall short in "management ease" because: 1) Rotations tie up several breeding pastures; thus, complicating grazing management, 2) Identification by sire breed …

What Does The Cattle Buyer Look For In Feeder Cattle?, Robbi H. Pritchard

Range Beef Cow Symposium

This subject is steeped with opinion, prejudice and fact in a recipe similar to politics. Some issues are understood, definable and reflected in market prices. We all are aware of body weight, fill, frame, and flesh influences on price and value. Unfortunately, these four factors are inadequate for identifying as much of the profit potential differences between feeder cattle as we would like. As the industry pushes to find sources of profitable cattle, a much broader range of issues is being addressed. The motives and rationales behind these promotions deserve serious scrutiny. We need to distinguish between opinion, prejudice and …

Improving Re-Breeding Through Protein Supplementation, M. K. Petersen, D. E. Hawkins, I. Tovar, L. A. Appeddu

Range Beef Cow Symposium

Research conducted at Fort Robinson in 1960 and following studies have demonstrated that good body condition supports successful reproduction in both young and older cows. The recommendations from these studies have emphasized the feeding of energy to assist thin cows back into condition. However, in the extensive range conditions of the West, the ranch is intended to supply dietary energy through the range vegetation. When we look at the costs associated with calf production many ranchers have production costs above the national average. Many of these high cost producers have higher than average purchased feed costs. It would be advantageous …

Achieving Cow/Calf Profitability Through Low-Cost Production, R. E. Taylor, T. G. Field

Range Beef Cow Symposium

A few years ago a NCA task force committee made the following statement:

"Low-cost producers (in all segments of the production chain) will survive in this system of competitive markets. Others [high-cost producers] will eventually be unable to compete and will exit the business."

Initially, this pointed summary statement fell on deaf ears as cattle prices were relatively good and many producers said they couldn't reduce costs as each year their costs were increasing. Currently, the high-cost producers are exiting the cattle business or depleting assets. Other cow/calf producers have positioned or are positioning themselves as low-cost producers. An increased …

A Rancher’S Focus On Cost Effective Management, Connie R. Quinn

Range Beef Cow Symposium

This paper focuses on profitability points which apply to the cow/calf producer. This is a challenging task and, at best, will be a restatement of the practices that are employed by any good beef producer. In today’s environment, if one has the boldness to put these points in print, it is only to reinforce the good management already being implemented and to offer ideas for other management practices that could also be employed. The merit of this exercise is to exchange ideas that can be mixed and matched with what is already being done on the ranch. The result will …

Bulletin No. 34: Tidal Marshes Of Long Island Sound: Ecology, History And Restoration, Glenn D. Dreyer, William A. Niering

Bulletins

No abstract provided.

A Review Of Ministerial Policy Guidelines For Rock Lobster Processing In Western Australia From The Working Group Appointed By The Minister For Fisheries And Chaired By Peter Rich, Peter Rich

Fisheries Management Papers

The rock lobster processing industry in Western Australia has a long history of management. Whilst management of the industry through the Fisheries Department has obviously been successful in helping to build the rock lobster industry into one of the State's major export industries, this approach is not without problems. With the introduction of the Fisheries Management Act 1994, the Minister for Fisheries deemed it appropriate to appoint an expert group to review the existing regulation of the rock lobster processing sector, draft the necessary guidelines to assist the Executive Director of the Fisheries Department make decisions on rock lobster processing …

A Possible Breeding Record For Clark's Nutcracker, Diana F. Tomback

Nebraska Bird Review

In the late morning of 17 May, 1987, my husband and I drove into Sowbelly Canyon, which is in the Pine Ridge area in northwestern Nebraska. In the canyon, about 3.3 miles from Harrison, we were in a ponderosa pine (Pinus ponderosa)–riparian community ecotone, and were startled to hear and see a flock of Clark's Nutcrackers (Nucifraga columbiana). About 30 adults were perched on branches or flying about the tops of the ponderosa pines. From the abundance of cones, it was clear that there had been a good seed crop the previous fall. Some of the …

Morphometric, Isozyme And Random Amplified Polymorphic Dna (Rapd) : Analysis Of Sarotherodon Mossambicus Populations In Java, Indonesia, Yoedono Sovyanhadi

Loma Linda University Electronic Theses, Dissertations & Projects

The tilapia fish Sarotherodon mossambicus (Teleostei, Cichlidae) is an important protein source for Indonesians, is a strong competitor with some endemic species and .readily hybridizes with other tilapias. A base line assessment of the present genetic diversity of these populations in Indonesia was conducted to facilitate the management of this species. This study compared the effectiveness of the 3 techniques (morphometric, isozyme and RAPD) in revealing differences within and among 9 Javanese populations. The data were also used to estimate the rate of divergence among the populations.

Morphometric analysis showed significant size and shape differences among the populations. Isozyme and …

Comparison Of Predation Rates On Wild Turkey Hens Between Two Forest Ecosystems In Mississippi, Michael J. Chamberlain, Darren A. Miller, Bruce D. Leopold, George A. Hurst

Wildlife Damage Management Conference

Because of increases in predator populations, concern has arisen about effects on wild turkey (Meleagris gallopavo) populations. We examined differences in predation of adult hens between 2 forested areas in Mississippi. Twin Oaks Wildlife Management Area (OAKS), located in the Mississippi Alluvial Valley, is a 2,302 ha tract of mature bottomland hardwood forest surrounded on 3 sides by soybean fields. Tallahala Wildlife Management Area (TWMA) is a 14,410 ha mixed forest in central Mississippi and is part of a large, forested ecosystem. Hens were captured, fitted with transmitters, and monitored by telemetry, 1990-1994 on TWMA (n = …

Wpa News 49 (1995), World Pheasant Association

Galliformes Specialist Group and Affiliated Societies: Newsletters

WPA News (November 1995), number 49

Published by the World Pheasant Association

Kentucky Warbler (Vol. 71, No. 4), Kentucky Library Research Collections

The Kentucky Warbler

No abstract provided.

The Mayfly Newsletter, Peter M. Grant

The Mayfly Newsletter

The Mayfly Newsletter is the official newsletter of the Permanent Committee of the International Conferences on Ephemeroptera.

Growth Of Testes And Testicular Morphology After Eight Generations Of Selection For Increased Predicted Weight Of Testes At 150 Days Of Age In Boars, R. R. Harder, D. D. Lunstra, R. K. Johnson, Roman L. Hruska

Department of Animal Science: Faculty Publications

Weights of testes and epididymides, body weight, and morphometric measurements of testicular tissue of 75 boars of a line selected for eight generations for predicted weight of testes at 150 d of age and 75 boars of a randomly selected control line were used to evaluate the effects of selection on testicular development at 70, 100, 130, 160, and 450 d of age (n = 15 boars per line per age). Body weights for boars of the select and control line did not differ (P <.05) and the shape of the body growth curve was similar for both lines. Boars of the select line had larger testes than control boars at each age (P < .05), but there was a significant line x age interaction. The percentage increase of the select line mean over the control mean for weight of testes was 37% at 70 d, a maximum of 120% at 100 d, and 25% at 450 d. The percentage of the testes made up of seminiferous tubules differed between lines (P <.01). Lines had similar means of approximately 28% at 70 d and 71% at 450 d, but the mean for the select line was larger between 100 and 160 d of age; the greatest difference was 11.6% (control = 43.7, select = 55.3%) at 100 d. After 70 d of age, select-line boars had a greater percentage of seminiferous tubules with lumens that contained elongated spermatids (P <.l0). The proportion of the testes occupied by Leydig cells was greatest at 70 d, declined sharply between 70 and 130 d with a sharper decline in select-line boars, and then declined more gradually from 130 to 450 d of age. We conclude that selection for weight of testes at 150 d resulted in lower age at puberty for boars of the select line.

Growth Of Testes And Testicular Morphology After Eight Generations Of Selection For Increased Predicted Weight Of Testes At 150 Days Of Age In Boars, R. R. Harder, D. D. Lunstra, R. K. Johnson, Roman L. Hruska

Department of Animal Science: Faculty Publications

Weights of testes and epididymides, body weight, and morphometric measurements of testicular tissue of 75 boars of a line selected for eight generations for predicted weight of testes at 150 d of age and 75 boars of a randomly selected control line were used to evaluate the effects of selection on testicular development at 70, 100, 130, 160, and 450 d of age (n = 15 boars per line per age). Body weights for boars of the select and control line did not differ (P <.05) and the shape of the body growth curve was similar for both lines. Boars of the select line had larger testes than control boars at each age (P < .05), but there was a significant line x age interaction. The percentage increase of the select line mean over the control mean for weight of testes was 37% at 70 d, a maximum of 120% at 100 d, and 25% at 450 d. The percentage of the testes made up of seminiferous tubules differed between lines (P <.01). Lines had similar means of approximately 28% at 70 d and 71% at 450 d, but the mean for the select line was larger between 100 and 160 d of age; the greatest difference was 11.6% (control = 43.7, select = 55.3%) at 100 d. After 70 d of age, select-line boars had a greater percentage of seminiferous tubules with lumens that contained elongated spermatids (P <.lo). The proportion of the testes occupied by Leydig cells was greatest at 70 d, declined sharply between 70 and 130 d with a sharper decline in select-line boars, and then declined more gradually from 130 to 450 d of age. We conclude that selection for weight of testes at 150 d resulted in lower age at puberty for boars of the select line.

Path To Extinction: Impact Of Vegetational Change On Lizard Populations On Arapaho Prairie In The Nebraska Sandhills, Royce E. Ballinger, Kristin S. Watts

Papers in Herpetology

Since removal of cattle from Arapaho Prairie in 1977, secondary succession has resulted in increased vegetation cover. Studies of resident lizards on a 150 × 150 meter grid revealed: (1) one lizard species (Holbrookia maculata) has essentially been eliminated in 15 years (from a maximum of 74 residents in 1979 to three residents in 1993); (2) a second lizard population (Sceloporus undulatus) has declined from 56 residents in 1979 to fewer than 30 residents in 1993; and (3) preferred microhabitats occupied by lizards have not changed, but their microgeographic distributions have shifted to areas of blowouts, …

Movement Patterns And Habitat Use Of The Copperhead Snake (Agkistrodon Contortrix) In Southeastern Virginia, Christopher Edwin Petersen

Biological Sciences Theses & Dissertations

Radiotelemetry was used to study seasonal movement patterns, habitat use, and thermal relations of nine copperhead snakes, Agkistrodon contortrix, in southeastern Virginia from May 1993 to May 1995. Daily movements ranged from 0-450 m, with 0-5 m movements accounting for 65% of the observations. The seasonal movements of males were more extensive than those of females. Differences in seasonal movements between the sexes may be due to reproductive activity of the snakes. Both males and females significantly reduced their movements prior to shedding. More time was spent using upland deciduous forests than lowland river swamps or anthropogenic habitat. Copperheads …

The Distribution Of Rice Rats (Oryzomys Palustris) And Meadow Voles (Microtus Pennsylvanicus) In Tidal Marsh Communities On The Eastern Shore Of Virginia, Allison L. Sowell

Biological Sciences Theses & Dissertations

Two tidal marsh sites were selected for live trapping of small mammals on the Eastern Shore of Virginia. Trap grids were established at site and animals were trapped and tagged each month for one year. Habitat variables were measured at the peak of the growing season and again in late winter when vegetation was at its least luxuriant. ANOVA and multiple regressions were used to analyze the relationships between rice rats and meadow voles and associated variables related to habitat structure.

ANOVA revealed where rice rats and meadow voles differed in habitat preferences. Meadow voles were consistently captured in association …