Life Sciences Commons^™

Prevalence Of Dirofilaria Immitis In Southern California’S Invasive Aedes Species And Native Culiseta Incidens, Zaina Chaban

University of the Pacific Theses and Dissertations

Dirofilaria immitis is a mosquito-borne parasite that causes dog heartworm disease, effecting over 100,000 dogs in the United States each year (CAPC - Parasite Prevalence Maps., 2021). Increased disease reports are commonly attributed to an increase in the local mosquito vector population. Since 2013, dog heartworm disease cases have increased by approximately 21% in the United States as reported by the American Heartworm Society. During the same time, invasive mosquitoes belonging to the genus Aedes have been found in Southern California and spread to other areas. The purpose of our research was to determine the prevalence of Dirofilaria …

Impact Of High Volume Energy Drink Consumption On Electrocardiographic And Blood Pressure Parameters: A Randomized Trial, Sachin A. Shah, Andy H. Szeto, Raechel Farewell, Allen Shek, Dorothy Fan, Kathy N. Quach, Mouchumi Bhattacharyya, Jasmine Elmiari, Winny Chan, Kate O'Dell, Nancy Nguyen, Tracey J. Mcgaughey, Javed M. Nasir, Sanjay Kaul

School of Pharmacy Faculty Articles

Background Energy drinks have been linked to an increase in emergency room visits and deaths. We aim to determine the impact of energy drinks on electrocardiographic and hemodynamic parameters in young healthy volunteers. Methods and Results A randomized, double-masked, placebo-controlled, crossover study was conducted in healthy volunteers. Participants consumed 32 oz of either energy drink A, energy drink B, or placebo within 60 minutes on 3 study days with a 6-day washout period in between. The primary end point of QT c interval and secondary end points of QT interval, PR interval, QRS duration, heart rate, and brachial and central …

The Aquatic Insects Of Mill Creek, California, Eugene J. Bisagno

University of the Pacific Theses and Dissertations

The study of insects has been a hobby for me for more than twenty years. Their diversity and adaptation to many habitats has been of particular interest. Ever since the removal of my first aquatic nymph from the crashing waters of the American River, I have been especially fascinated, with these insects. Since I had access to a relatively undisturbed year round stream, I chose to study the aquatic insects of this stream. The purpose of this study was to survey the aquatic insect fauna of Mill Creek during the course of a year and relate these findings to the …

Population Dynamics Of Musculus Senhousia And Protothaca Staminea In Tomales Bay, California, David Mcclain Nelson

University of the Pacific Theses and Dissertations

The changes in population density, growth and biomass of two infaunal, sympatric, suspension-feeding bivalves, Musculus senhousia (Benson, 1842) and Protothaca staminea (Conrad, 1837), have been investigated over an eighteen month period in Tomales Bay, California. M. senhousia, a mussel, displays two basic spawning times, one of which occurs in late spring, while the second spawning takes place in late summer. M. staminea, a venerid, spawns once during late spring. The population density of the mussel ranged from 9,180 m-2 in early spring to 752 m-2 in the fall of 1976. M. staminea had a maximum density of 1,120 m- 2 …

Feeding Studies On Three Species Of Fish From Tomales Bay, California, John Brezina

University of the Pacific Theses and Dissertations

The study of fish diets or feeding behavior is an important aspect in ecology. Analysis of fish stomach contents often provides data for determining resource utilization, feeding strategies, and overlaps in food items among and between species. Studies of fish diets could also be used for testing ecological theory or provide management procedures for fisheries if methods could be developed for minimizing competitive food utilizations by other fish and enhancing growth of exloited fish populations (Obrebski and Sibert 1977). In order to understand more about ecological communities and competitive predatory relationships of fish, more data are required on their diets …

The Effects Of Predation And Sediment Reworking By The Maldanid Polychaete Axiothella Rubrocincta (Johnson) On Benthic Littoral Microalgae Assemblages, Gary Scott Shusta

University of the Pacific Theses and Dissertations

The taxonomic composition of the diatom assemblages inhabiting the substrate on the mudflat, and the effects of a cohabiting deposit-feeding invertebrate on the diatom assemblage structure are the subjects of this paper. While pelagic diatoms have received considerable attention in the literature to date, comparatively little is known about the ecology and distribution of benthic diatoms are known to be cosmopolitan in their distributions (Alee, 1950). These plants have been found to be opportunistic species in that they are quick to respond to relatively small perturbations in physical conditions. It has also been demonstrated that distinct associations of diatoms exist …

George Moscone To Kenneth John Azbill, 28 June 1976, George Moscone

Mayor Moscone

Moscone's letter of support for the Women, Infants and Children (WIC) nutritional program

Correlations Of Some Physico-Chemical Factors With Cladocerans, Copepods, And Rotifers In Fourteenmile Slough, Stockton, California, John Kenneth Frey

University of the Pacific Theses and Dissertations

The purpose of this study was to examine correlations between physico-chemical factors; between factors and particular species of zooplankton; between species of zooplankton; and between different locations in a dead-end slough. Fourteenmile Slough, located in northwest Stockton, California) was chosen as the location for this study.

A Quantitative Study Of The Water Quality And Plankton Of Upper Blue Lake, Lower Blue Lake, And The Oaks Arm Of Clear Lake In Lake County, California, Stephen Patrick Hayes

University of the Pacific Theses and Dissertations

This study was undertaken to examine any possible associations between the measurements of water quality and lake conditions, and the quantity and composition of plankton present in Upper Blue Lake, Lower Blue Lake, and the Oaks Arm of Clear Lake during the sampling period. A secondary objective of this study was to provide a record of these measurements. These measurements, when taken collectively, are important indicators of the trophic state or nutrient condition of the waters of the three lakes from February through October 1972.

Population Ecology Of The Littoral Fringe Gastropod Littorina Planaxis In Northern California, Russell James Schmitt

University of the Pacific Theses and Dissertations

Life history patterns of individual organisms are the result of natural selection and should be correlated with particular physical and biological characteristics of habitats in which they live. The littoral fringe is known to be the most severe physical habitat in the intertidal zone, and it is expected that organisms in it should have population characteristics associated with selective response to physical adversity rather than biological interaction. Ecological studies of populations of Littorina planaxis were made in the Dillon Beach and Bodega Head areas. The study localities differed principally in extent of wave exposure rather than geographical location.

Biological Aspects Of Speciation In Three Sympatric Euzonus Species At Dillon Beach, California (Polychaeta: Opheliidae), Steven Rhoads Parke

University of the Pacific Theses and Dissertations

In the present study, information concerning morphology, ecology, fertilization and larval development of three sympatric species of Eusonus is presented. Morphological similarities are reviewed in part I. These similarities correspond with significant lack of variation found in larval development (part IV). Despite these similarities, as well as the ability to cross fertilize their species, the ecological and reproductive isolating mechanisms presented in part II and II provide a positive indication of the existence of three biologically distinct species. A comparative discussion reviews the efficacy of morphological criteria in differentiating the three closely related Euzonus species.

A Description Of Vascular Plant Species From An Area In The Central Sierra Nevada Foothills Of California, Thomas Carter Hensel

University of the Pacific Theses and Dissertations

Much work has been done on the remarkably diverse flora of California but few specific studies of the foothills of the Central Sierra Nevada Range have been undertaken. One such area is Calaveras County, a region rich in the early history of California.

The site chosen for this study ranges from approximately 2350 to 2700 feet in elevation. It is well defined by survey and accessible at all times of the year. The primary objective of the study was to determine what vascular plant species occur naturally in the area. This was accomplished by extensive collections made from April 1970 …

A Population Study Of The Peridiniidae Of Tomales Bay, Sidney Allen Cattell

University of the Pacific Theses and Dissertations

It is the purpose of this study to present a quantitative survey of the family Peridiniidae in Tomales Bay over the six month period between October thirtieth and May sixth. Emphasis has been placed on variation in the total Peridiniidae population for this period, on the seasonal variation of individual species, and on the possible effects of hydrographic and climatic conditions on the population.

Annotated Checklist Of The Birds Of San Joaquin County, California, James Leroy Tate Jr.

University of the Pacific Theses and Dissertations

Evaluation of many records is the only way valid judgments can be made on abundance and status. The necessity of obtaining exact dates, localities, numbers, and special weather conditions cannot be overemphasized. For this reason, records in supplement to this list are freely solicited.

The present checklist includes all species and subspecies for which specimens exist. In some instances sight records have been adequate reason for including a species on the list when no specimen existed. Sight records for species which are difficult to identify have been admitted upon careful editing. The author has followed the policy outlined by Griscom …

Some Hemiurid Trematodes Of Marine Fishes Of California, Fuad Michael Nahhas

University of the Pacific Theses and Dissertations

The following seven species of hemiurid trematodes, some with new host records, are reported in this study: Dissosaccus laevis, Genolinea laticauda, Lecithaster salmonis, Parahemiurus merus, Sterrhurus exodicus, Sterrhurus monticelli and Tubulovesicula lindbergi. Dissosaocus laeyis and Sterrhurus monticelli are reported for the first time from the West Coast of North America.

Genolinea oncorhynohi Adams and Margolis 1958 is placed in synonymy with Genolinea laticauda Manter 1925. Keys for Genolinea and Tubulovesicula species, modified from Manter (1954) are included. Two tables, one summarizing the hemiurids reported from the West Coast of North America, the other a summary of hemiurids from Monterey Bay, …

Ascidicolous Copepods Of Dillon Beach, California, David Horace Montgomery

University of the Pacific Theses and Dissertations

Work on the copepoda parasitizing anoidiens has been relatively extensive in Europe, loss so on the East Coast of the United States and negligible on the West Coast. of this work, a major portion has been concerned with the solitary ascidians, while the colonial or compound forms have been largely neglected. The apparent lack of interest in copepods parasitizing compound be attributed to the manliness of the animals, their associations with both Zooids and the colonial matrix which makes dissection difficult and the chaotic condition of their taxonomy.

Crop Damage By Wildlife In California ; With Special Emphasis On Deer And Waterfowl, Earl Roy Biehn

University of the Pacific Theses and Dissertations

The problem of crop damage by wildlife is not a new one in California, but it has assumed a role of major economic importance only during the last few decades. Since this problem was first encountered in California, it has steadily increased in size and scope, until today in many areas of the state it is an important economic problem of the farmer; a pressing management problem for the biologists and wildlife technicians of the California Division of Fish and Game; a constant challenge to the game management agents of the Federal Fish and Wildlife Service; a great concern of …

Studies On Larval Trematodes From Tomales Bay, California, Leroy H. Fisk

University of the Pacific Theses and Dissertations

Very little is known of the development, life history, economic importance, of biological relationships of larval trematodes, especially in their molluscan and arthropod hosts on the Pacfic Coast. The comparatively few contributions to our knowledge have been from scattered and fragmentary observations. The purpose of this study was to expand our knowledge and to lay a foundation for further work on trematode life cycles in marine organisms. The area selected for special investigation was Nick's Cove, Tomales Bay, California.

A Survey Of Intestinal Protozoa At The Stockton State Hospital : Stockton, California, Lawrence Melvin Gholz

University of the Pacific Theses and Dissertations

During the past months much has been published in periodicals, especially those of a pictorial nature, which discredits institutions established for the care of' the mentally ill throughout the nation. Many articles have been presented which show an intelligent approach, but the majority of these treatments are by those who are basing too much on a very narrow experience. For example, one news magazine recently printed a picture of a mental patient in institutional garb sitting on a bench in one of the poses most characteristic of a catatonic. The caption of the picture seemed to ignore this significant fact …

Contributions To The Study On Helminth Fauna Of Dillon Beach, Francis C. Gale

University of the Pacific Theses and Dissertations

Studies on trematodes of marine organisms of the Pacific Coast have been of a scattered and fragmentary nature. J. Stafford (1904) collected and described a number of trematodes from fishes of the north Pacific, but, in his historical survey, Manter (1926) fails to mention specifically any studies covering the waters south of Canada. More recently, in the United States, several contributions to the field have been made by Dr. John E. Guberlet at the University of Washington and at the College of the Pacific by Dr. Alden Noble, under whose guidance this study was made. James Park (1937) revised the …

Student Agricultural Work Experiences In San Joaquin County, With Particular Reference To The Work Experiences Of Students Of Stockton And Lodi Public Schools In The Summer Of 1942, Frank L. Nash Jr.

University of the Pacific Theses and Dissertations

As early as February, 1942, fears of an agricultural labor shortage began to be expressed in California. The Pacific Southwest Area Committee of the Young Men’s Christian Association asserts in a statement of policy on Emergency Harvest Camps, “The California State Chamber of Commerce’s Central Coast Council’s Agricultural Committee points out that ‘the removal of enemy aliens from coastal areas, the absorption of migrant workers into defense industries, and increased government quotas for the production of many crops has created a serious agricultural problem.’ (News release, February 28, 1942).”

In San Joaquin County 5,000 Japanese were evacuated. Most of these …

Trees And Shrubs Of Kings Canyon National Park, Kenneth M. Stocking

University of the Pacific Theses and Dissertations

In 1935 I first visited the Kings Canyon area. Since then I have spent many hours wandering through the woods and over the mountains in the area around the old General Grant National Park and the country which is now included in the Kings Canyon National Park. To my knowledge, no complete flora has been made for this vicinity. I consider the following pages to be the beginning of a fascinating work. It is the beginning because this paper includes only plants with woody stems.

A Study Of The Native Trees Of Amador County, Guy V. Towsley

University of the Pacific Theses and Dissertations

The region covered by this study reaches from the valley floor of the San Joaquin-Sacramento Valley, with an altitude of about 150 feet, to the top of the Sierra Nevada Mountains, whose peaks, in Amador County, reach to more than 9000 feet. Mokelumne Peak has an altitude of 9371 feet. The north and south distance, across the county at Ione, is 22 miles, while at Cook's Station, it is barely 5 miles. Amador County has an area of about 600 square miles.

Thus, a study of trees in this county, gives a fairly representative cross-section picture of the Sierras at …

The Distribution And Economic Value Of The Chenopodiaceae Of San Joaquin County, California, Ralph Stiles Raven

University of the Pacific Theses and Dissertations

Plants of this family which contains about seventy four genera and five hundred end fifty species widely distributed over the world, are known by several common names, such as pig weed, goose foot, and salt bush. They are primarily plents of alkaline or saline soil and co such a unique purpose in the plant real thriving where it is impossible for other plants to grow. The term "salt bush" according to G.L. Bi-well, is more specifically applied to a group of individuals having a pronounced salty tante, a majority of which belong to the botanical genus Atriplex. This group contains …