Popular dynamics of the internal parasites of Lepomis Gibbosus (Linnaeus) (Centrarchidae) from Mallard Creek, North Carolina / by Lily Ann Kohlweiss.
| Author/creator | Kohlweiss, Lily Ann author. |
| Other author | McDaniel, James S., degree supervisor. |
| Other author | East Carolina University. Department of Biology. |
| Format | Theses and dissertations |
| Production | 1971. |
| Description | 38 leaves ; 29 cm |
| Supplemental Content | Access via ScholarShip |
| Subjects |
| Subject | Studies of the dynamics of fish-parasite relations are still relatively few, although effective management and utilization of freshwater fish as a food resource requires a closer examination of this association. The sunflsh under study herein, Lepomls glbbosus (L.), from eastern North Carolina, harbored Leptoryncholdes thecatus (Acanthocephala) and Barbulostomum cupulorls (Trematoda: Dlgenea) In the small Intestine, and some Proteocephalus sp. cestodes and acanthocephalan cystacanths in the liver. Throughout the study, all fish taken were Infected with at least one species of parasite. Five-year-old fish were the most heavily infected, and infections declined in older fish. None of the fish showed any external manifestations of their Infection, although ulcer-like lesions were observed in the small Intestine about the attachment organs of the acanthocephalans. The absolute number of parasites was higher in female fish than in male fish. This may be related to the breeding cycle of the sunflsh. A seasonal cycle was indicated for the Acanthocephala and Trematoda by the presence of a peak month of infection, followed by a decline in intensity. Only three species of parasites were obtained, possibly Indicating a response to the stresses Imposed by the euryhallne environment. |
| General note | Submitted to the faculty of the Department of Biology. |
| General note | Advisor: James S. McDaniel |
| Dissertation note | M.A. East Carolina University 1971 |
| Bibliography note | Includes bibliographical references (leaves 29-32). |
| Genre/form | Academic theses. |
| Genre/form | Academic theses. |
| Genre/form | Thèses et écrits académiques. |
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