자료유형  

 학위논문

Control Number  

0016932760

International Standard Book Number  

9798379839239

Dewey Decimal Classification Number  

628

Main Entry-Personal Name  

Siddons, Spencer Raymond.

Publication, Distribution, etc. (Imprint  

[S.l.] : Purdue University., 2022

Publication, Distribution, etc. (Imprint  

Ann Arbor : ProQuest Dissertations & Theses, 2022

Physical Description  

1 online resource(128 p.)

General Note  

Source: Dissertations Abstracts International, Volume: 85-01, Section: A.

General Note  

Advisor: Searle, Catherine.

Dissertation Note  

Thesis (Ph.D.)--Purdue University, 2022.

Restrictions on Access Note  

This item must not be sold to any third party vendors.

Summary, Etc.  

요약Infectious diseases are becoming increasingly common and problematic for wildlife populations in many parts of the world. Disease prevalence and severity fluctuate over time, often due to the ubiquitous pressure of seasonality, or the cyclic changes in ecological systems. However, for many host-pathogen systems, our understanding of important seasonal drivers of disease remains fragmented. For example, when seasonality of a disease is studied in medium and high latitudes, winter is often neglected, despite this being a period of physiological and immunological challenges associated with extreme environmental conditions. Therefore, my aim is to examine drivers of winter infection dynamics of the amphibian fungal pathogen Batrachochytrium dendrobatidis. First, B. dendrobatidis infection prevalence was measured from spring through fall to understand local infection levels and anthropogenic influences (Chapter 1). Next, laboratory experiments examined the effects of B. dendrobatidis on critical thermal minimum of two anuran species to identify how this pathogen influences the ability of hosts to survive winter (Chapter 2). Another laboratory experiment tested how road de-icing salt (commonly used in winter) influences B. dendrobatids and a tadpole host condition and subsequent host-pathogen interactions (Chapter 3). Finally, a field-based exploration of B. dendrobatidisinfection dynamics was conducted during winter to understand how infections vary during in this season and between two overwintering strategies (Chapter 4). Winter infection dynamics in many host-pathogen systems are largely understudied, but the knowledge gained by this work can demonstrate how harsh environmental conditions of winter that can exacerbate otherwise benign infections, and affect the ability of hosts to sustain infections during winter. This work can therefore inform predictions and investigations of infection dynamics in subsequent seasons to better understand the seasonality of wildlife diseases.

Subject Added Entry-Topical Term  

Water quality.

Subject Added Entry-Topical Term  

Infections.

Subject Added Entry-Topical Term  

Infectious diseases.

Subject Added Entry-Topical Term  

Seasonal variations.

Subject Added Entry-Topical Term  

Pathogens.

Subject Added Entry-Topical Term  

Environmental conditions.

Subject Added Entry-Topical Term  

Pesticides.

Subject Added Entry-Topical Term  

Roads & highways.

Subject Added Entry-Topical Term  

Epidemics.

Subject Added Entry-Topical Term  

Frogs.

Subject Added Entry-Topical Term  

Reptiles & amphibians.

Subject Added Entry-Topical Term  

Winter.

Subject Added Entry-Topical Term  

Genomes.

Subject Added Entry-Topical Term  

Ponds.

Subject Added Entry-Topical Term  

Human influences.

Subject Added Entry-Topical Term  

Salinity.

Subject Added Entry-Topical Term  

Water temperature.

Subject Added Entry-Topical Term  

Wetlands.

Subject Added Entry-Topical Term  

Agricultural chemistry.

Subject Added Entry-Topical Term  

Chemistry.

Subject Added Entry-Topical Term  

Ecology.

Subject Added Entry-Topical Term  

Epidemiology.

Subject Added Entry-Topical Term  

Genetics.

Subject Added Entry-Topical Term  

Land use planning.

Subject Added Entry-Topical Term  

Organic chemistry.

Subject Added Entry-Topical Term  

Transportation.

Subject Added Entry-Topical Term  

Water resources management.

Subject Added Entry-Topical Term  

Zoology.

Added Entry-Corporate Name  

Purdue University.

Host Item Entry  

Dissertations Abstracts International. 85-01A.

Host Item Entry  

Dissertation Abstract International

Electronic Location and Access  

로그인을 한후 보실 수 있는 자료입니다.

Control Number  

joongbu:641601