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Effects of waterborne zinc on reproduction, survival and morphometrics of Gyrodactylus turnbulli (Monogenea) on guppies (Poecilia reticulata).
| Content Provider | Semantic Scholar |
|---|---|
| Author | Gheorghiu, Cristina Cable, Joanne Marcogliese, David J. Scott, Marilyn E. |
| Copyright Year | 2007 |
| Abstract | Recent reviews indicate that pollutants in the surrounding macroenvironment directly influence the population dynamics, distribution and dispersal of fish ectoparasites, often leading to increased parasitism. The aim of the current study was to explore the effects of sublethal concentrations of waterborne zinc (up to 240 microg Zn/L) on survival, reproduction and morphometrics of Gyrodactylus turnbulli, a viviparous monogenean infecting the skin and fins of the guppy, Poecilia reticulata. Parasite survival and reproduction on the fish were recorded daily for individual parasites maintained in isolated containers. Both survival and reproduction were reduced in 30 and 120 microg Zn/L, compared with 0, 15, and 60 microg Zn/L indicating direct toxic effects of Zn on the parasite. However, as generation time was unaffected by Zn, we attribute the reduced reproduction to the shorter lifespan. Parasite survival off the fish was monitored hourly. Average lifespan of the detached parasites decreased linearly from 19.5 h in 0 microg Zn/L to 17.3h in 240 microg Zn/L, further supporting the direct toxic effect of Zn to the parasite. In addition, temporal dynamics of parasite morphometrics were monitored from mini-epidemics sampled after 1, 5, 10, and 15 days exposure to various Zn concentrations. All morphological parameters decreased significantly in response both to concentration and duration of exposure to waterborne Zn. Together these data clearly indicate that concentrations as low as 120 microg Zn/L are directly toxic to G. turnbulli. |
| Starting Page | 132 |
| Ending Page | 138 |
| Page Count | 7 |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://www.mcgill.ca/files/parasitology/Scott7.pdf |
| PubMed reference number | 17049530v1 |
| Volume Number | 37 |
| Issue Number | 3-4 |
| Journal | International journal for parasitology |
| Language | English |
| Access Restriction | Open |
| Subject Keyword | Act Relationship Join - detached Containers Gyrodactylus branchialis Host-Parasite Interactions Lebistes Monogenea Parasites Poecilia Zinc Zn-alpha-2-glycoprotein parasitism pars reticulata of substantia nigra |
| Content Type | Text |
| Resource Type | Article |
