Temperature response and salt tolerance of the opportunistic pathogen Saprolegnia parasitica: Implications for the broad whitefish subsistence fishery
| Autor: | Todd L. Sformo, Paul Y. de la Bastide, Jonathon LeBlanc, Geof H. Givens, Billy Adams, John C. Seigle, Samuel C. Kunaknana, Lawrence L. Moulton, William E. Hintz |
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| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: | |
| Zdroj: | Arctic, Antarctic, and Alpine Research, Vol 53, Iss 1, Pp 271-285 (2021) |
| Druh dokumentu: | article |
| ISSN: | 1523-0430 1938-4246 15230430 |
| DOI: | 10.1080/15230430.2021.1970340 |
| Popis: | We examined the effects of temperature and salt concentration on growth of the freshwater oomycete Saprolegnia parasitica that has recently (since 2013) been found to infect an important subsistence fish (in Iñupiaq, Aanaakłiq; broad whitefish, Coregonus nasus) on the Colville River in Nuiqsut, Alaska. Using two confirmed isolates (one from the Colville River and another from a southern British Columbia aquaculture facility), we tested the following hypotheses: (1) the isolate from Alaska will grow at a greater rate than the isolate from British Columbia at lower temperatures, (2) the isolate from British Columbia will grow at a greater rate at higher temperatures than the Alaska isolate, and (3) increasing salinity will reduce the growth rate of both isolates similarly at all temperatures. In addition, we used local observations—subsistence fishers and observations associated with scientific monitoring—to assist in interpreting the potential implications of our experimental results in the context of these environmental observations. In the habitat relevant to this study, water temperature ranges between |
| Databáze: | Directory of Open Access Journals |
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