Simulation of population dynamics of the parasite Haematoloechus coloradensis Cort 1915 (Digenea: Haematolochidae) in its 3 host species : effects of environmental temperature and precipitation /
(unfavorable conditions for host species) indicated that
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| Format: | Thesis eBook |
| Language: | English |
| Published: |
[Place of publication not identified] :
[publisher not identified] ;
1995.
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| Subjects: | |
| Online Access: | Link to OAKTrust copy |
| Summary: | (unfavorable conditions for host species) indicated that and cercaria mortality. Snail infection is determined by and observed variations in prevalence for the first conditions for host populations) resulted in higher stable definitive (frog) hosts generally agreed with field determined by encounter rate between cercariae and development within snails and (2) parasite-induced host developmental stage of the parasite and population dynamics disturbance may be as important in determining impact on disturbance. dynamics than precipitation. Susceptible host abundances effects of variations in temperature and precipitation on encounter rate between infected odonates and susceptible encounter rate between parasite eggs and susceptible snails. encounter rate could maintain the parasite population. frogs. Simulated population dynamics and seasonal variations function of parasite recruitment and mortality, and snail Haematoloechus coloradensis, and use of the model to examine In both odonate and frog submodels recruitment and mortality in prevalences of infection for second (odonate) and individuals, snail infection, cercariae shedding, and snail infection. Snail, odonate, and frog submodels represent intermediate host (snail), probably were due to failure of mortality. High precipitation and short summers (favorable observations (Dronen, 1978). Differences between simulated of hosts constitute the source of susceptible hosts and of its associated host species. The parasite egg submodel Overall, results suggest that timing of occurrence of a given parasite development within each host. In the snail submodel parasite mortality, respectively. Odonate infection is parasite population dynamics as the specific nature of the parasite population dynamics. The model consists of 4 parasites are affected by recruitment of susceptible population dynamics and infection of the 3 host species, and prevalences than baseline conditions for the 3 host species. represents dynamics of parasite eggs in the environment as a Simulated effects of low precipitation and extended summers simulation model representing the life cycle of the parasite submodels, each representing dynamics of a different susceptible odonates. Frog infection is determined by temperature had a greater impact on parasite population the model to represent (1) effects of temperature on parasite This study describes development and evaluation of a were decreased during extended summers to levels below which |
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| Item Description: | "Major subject: Wildlife and Fisheries Sciences". Vita. |
| Physical Description: | xii, 108 leaves : illustrations ; 28 cm. Also available online. Issued also on microfiche from Lange Micrographics. |
| Bibliography: | Includes bibliographical references. |