A Paradox of Parasite Prolonging the Life of Its Host. Pearl Mussel Can Disable the Accelerated Senescence Program in Salmon

Зюганов, В. В.

doi:10.1007/s10525-005-0112-4

Cited by 16 publications

(20 citation statements)

References 8 publications

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“…In addition, in the low dose treatment—i.e., when a low dose of cercariae was used in the subsequent infection—fish preinfected with glochidia were more likely to become infected with D. pseudospathaceum than the control fish. The numbers of freshwater pearl mussel glochidia in preinfected fish (~400 glochidia per fish on average) were within the range of glochidia numbers found in natural salmonid populations (e.g., Salonen & Taskinen, ; Ziuganov, ), thereby providing a close biological relevance to the experimental findings.…”

Section: Discussionsupporting

confidence: 71%

“…The latter fish is the exclusive host for freshwater pearl mussel glochidia in many Central European populations (Geist, Porkka, & Kuehn, ; Taeubert & Geist, ). Often freshwater pearl mussel glochidia are considered to have a positive or, at most, a very weak negative effect on the host's health (Ziuganov, Zotin, Nezlin, & Tretiakov, ; Ziuganov, ; but see Taeubert & Geist, ). The latter is perhaps more likely to be true since freshwater pearl mussel glochidia demonstrate more than sevenfold growth in the course of 8–10‐month development on the fish gills with a substantial nutrient transfer from fish to glochidia and a shift in the stable isotope composition during the mussel's development (Denic, Taeubert, & Geist, ).…”

Section: Introductionmentioning

confidence: 99%

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Interactions between two parasites of brown trout (Salmo trutta): Consequences of preinfection

Gopko

Chowdhury

Taskinen

2018

Ecology and Evolution

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Preinfection by one parasitic species may facilitate or by contrast hamper the subsequent penetration and/or establishment of other parasites in a host. The biology of interacting species, timing of preinfection, and dosage of subsequent parasite exposure are likely important variables in this multiparasite dynamic infection process. The increased vulnerability to subsequent infection can be an important and often overlooked factor influencing parasite virulence. We investigated how the preinfection by freshwater pearl mussel Margaritifera margaritifera glochidia could influence the success of subsequent infection by the common trematode Diplostomum pseudospathaceum in brown trout Salmo trutta and vice versa whether preinfection by the trematode made fish more susceptible to glochidia infection. The first experiment was repeated twice with different (low and high) exposure doses to initiate the subsequent trematode infection, while in the second experiment we varied the timing of the preinfection with trematodes. The preinfection with glochidia made fish more vulnerable to subsequent infection with trematodes. Since the trematodes penetrate through the gills, we suggest that increased host vulnerability was most likely the result of increased respiration caused by the freshwater pearl mussel glochidia encysted on gills. In turn, brown trout preinfected with trematodes were more vulnerable to the subsequent glochidial infection, but only if they were preinfected shortly before the subsequent infection (20 hr). Fish preinfected with trematodes earlier (2 weeks before the subsequent infection) did not differ in their vulnerability to glochidia. These effects were observed at moderate intensities of infections similar to those that occur in nature. Our study demonstrates how the timing and sequence of exposure to parasitic species can influence infection success in a host–multiparasite system. It indicates that the negative influence of glochidia on host fitness is likely to be underestimated and that this should be taken into consideration when organizing freshwater pearl mussel restoration procedures.

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Section: Discussionsupporting

confidence: 71%

Section: Introductionmentioning

confidence: 99%

Interactions between two parasites of brown trout (Salmo trutta): Consequences of preinfection

Gopko

Chowdhury

Taskinen

2018

Ecology and Evolution

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“…Moreover, according to Vaughn et al (2008), mussels provide physical structure via stabilization and bioturbation of sediments, and these effects support, link and influence multiple trophic levels of fluvial ecosystems. Therefore, the relationship between FPM and their salmonid hosts has occasionally been suggested to be symbiotic rather than parasitic , 2005. Furthermore, Ziuganov (2005) has shown that even the FPM infection may be beneficial for salmonid individuals by strengthening them and helping them to survive from asphyxia and hook wounds with higher probability than the uninfected conspecifics.…”

Section: The Interactions Between the Freshwater Pearl Mussel And Hosmentioning

confidence: 99%

“…Therefore, the relationship between FPM and their salmonid hosts has occasionally been suggested to be symbiotic rather than parasitic , 2005. Furthermore, Ziuganov (2005) has shown that even the FPM infection may be beneficial for salmonid individuals by strengthening them and helping them to survive from asphyxia and hook wounds with higher probability than the uninfected conspecifics.…”

Section: The Interactions Between the Freshwater Pearl Mussel And Hosmentioning

confidence: 99%

An alien fish threatens an endangered parasitic bivalve: the relationship between brook trout (Salvelinus fontinalis) and freshwater pearl mussel (Margaritifera margaritifera) in northern Europe

Salonen

Marjomäki

Taskinen

2016

Aquatic Conservation

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Salonen, JouniThe role of salmonid fishes in conservation of the endangered freshwater pearl mussel (Margaritifera margaritifera) Jyväskylä: University of Jyväskylä, 2016, 48 The abundance of freshwater pearl mussels (Margaritifera margaritifera) has declined widely during the past century, and new conservation initiatives are needed. This thesis focused on the relationship between M. margaritifera and its salmonid host required for reproduction of this species. First, by exposing fish experimentally to glochidium larvae of M. margaritifera, different M. margaritifera populations were shown to demonstrate strong differences in their ability to parasitize different salmonid species. Atlantic salmon was clearly a better host for mussels in large river channels, whereas in small headwater tributaries brown trout was the best, or the only suitable, host. These findings provide a previously unrecognised explanation for the collapse and the lack of recruitment especially of the salmon-specific M. margaritifera populations; a high proportion of large salmon rivers were dammed for hydropower production in the 1960s, which prevented the migration of salmon and thus left M. margaritifera without the appropriate host in these rivers. Furthermore, an invasive salmonid, brook trout, was widely introduced to small tributaries above the dams in the past, but in this study was shown to be an unsuitable host for M. margaritifera. Thus, and due to the tendency of brook trout to replace native brown trout, the spread of brook trout is an additional threat to M. margaritifera. An indication of local adaptation of M. margaritifera, i.e. higher infectivity in sympatric salmonid host strain than in allopatric populations of the same species, was also detected. Finally, a new, nondestructive approach to search for M. margaritifera populations, involving electrofishing and quick visual examination of the gills of captured salmonids, revealed the occurrence of 3 previously unknown populations. The results of this thesis highlight the importance of taking into account the roles of salmonid fish in future efforts to search, protect and restore freshwater pearl mussel populations.

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“…The glue of large selected long-lived sticklebacks rich in biologically active substance (Ziuganov, 2005) was used in experiments as a wound healing, antistress, and antitumor drug. This biodrug was registered under the name Arktika+ by the Ministry of Health of the Russian Federation.…”

Section: Experimental Animals and Materials Collectionmentioning

confidence: 99%

Arctic Teleost Fishes with Canceled Accelerated Senescence Program Are a Potential Source of Stress Protectors and Cancer Drugs

Зюганов

Popkovich

2005

Biol Bull Russ Acad Sci

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A new approach to the development of natural cancer drugs from hydrobionts selected for longevity and stress resistance is analyzed. The accelerated senescence program was successfully canceled in holarctic stickleback Gasterosteus aculeatus by crossing the marine and freshwater forms in ponds and selection of hybrids. Prolongation of fish life was accompanied by an increased production of the antistress exocrine secretion by the renal epithelium of male sticklebacks (glycoproteins, peptides, and mucoids), required for successful egg development. Trials of the biodrug prepared from this secretion on salmons with epithelioma, guinea pigs with affected skin, and mice with transplantable tumors demonstrated a good therapeutic effect of the biologic.

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A Paradox of Parasite Prolonging the Life of Its Host. Pearl Mussel Can Disable the Accelerated Senescence Program in Salmon

Cited by 16 publications

References 8 publications

Interactions between two parasites of brown trout (Salmo trutta): Consequences of preinfection

Interactions between two parasites of brown trout (Salmo trutta): Consequences of preinfection

An alien fish threatens an endangered parasitic bivalve: the relationship between brook trout (Salvelinus fontinalis) and freshwater pearl mussel (Margaritifera margaritifera) in northern Europe

Arctic Teleost Fishes with Canceled Accelerated Senescence Program Are a Potential Source of Stress Protectors and Cancer Drugs

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