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Filtration and respiration responses of mussels (Mytilus edulis) to trematode parasite infections (Renicola roscovita) and transient heat exposure
Khosravi, M.; Thieltges, D.W.; Díaz-Morales, D.M.; Bommarito, C.; Vajedsamiei, J. (2023). Filtration and respiration responses of mussels (Mytilus edulis) to trematode parasite infections (Renicola roscovita) and transient heat exposure. IJP 21: 296-304. https://dx.doi.org/10.1016/j.ijppaw.2023.07.007
In: International Journal for Parasitology: Parasites and Wildlife. Australian Society for Parasitology. e-ISSN 2213-2244, meer
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| Trefwoorden |
Invertebrates > Platyhelminthes > Trematoda > Digenea > Helminth larvae > Digenean larvae > Metacercariae
Bivalvia [WoRMS]; Mytilus edulis Linnaeus, 1758 [WoRMS]; Renicola roscovita
Marien/Kust |
| Author keywords |
Bivalve; Metacercariae; Metabolic cost; Temperature fluctuation; Host manipulation |
| Auteurs | | Top |
- Khosravi, M.
- Thieltges, D.W., meer
- Díaz-Morales, D.M.
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- Bommarito, C.
- Vajedsamiei, J.
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| Abstract |
The mussel Mytilus edulis, a host to various trematode species, experiences performance decrements due to these infections. Yet, the impact magnitude and potential interactions with environmental stressors remain largely unexplored. This study scrutinizes the effect of Renicola roscovita infections on mussel filtration and respiration. We first assessed performance in both uninfected and lab-infected mussels at a mild temperature (16 °C), following an acute heat ramp to 30.5 °C and subsequent cooling. The experiment revealed neither a significant direct impact of the infection on the mussels' performance, nor any significant interplay between the infection and temperature variations. To account for possible infection effects obscured by low sample sizes or mussel size disparities, we conducted a reassessment at 16 °C using both small and large mussels. Infection notably hampered filtration in large mussels, with a marginal impact on smaller ones. A positive correlation was found between infection intensity and mussel filtration capacity, though the infection had no discernible impact on respiration. Our consistent finding of an 11-12 % infection effect size across all experiments indicates a slight reduction in mussel filtration due to trematode infections. While the exacerbating effect of transient heat stress on the infection's impact on filtration was not statistically significant, future investigations should explore potential interactions with prolonged heat stress. Our findings underscore the nuanced ways in which parasitic infections can influence marine bivalve physiology, emphasizing the need for more comprehensive studies that incorporate environmental stressors, such as heat stress, to fully elucidate the impact of parasitism on marine ecosystem health and resilience. |
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