Change in the structure of component parasite communities with host age

Dorovskikh, G. N.; Степанов, В. Г.

doi:10.1134/s1067413608030119

Cited by 7 publications

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“…In this study, a maximum of four Gyrodactylus species was observed in a minnow population. This finding is not too different from other European studies, in which a maximum of six Gyrodactylus species have been found in a single minnow population [19,20]. In the current study, G. aphyae was found in all populations, while the three other species were more or less rare.…”

Section: Geographical Distribution Of Gyrodactylus Spp On Minnowscontrasting

confidence: 91%

“…G. phoxini was found in only three locations, detected on a few hosts only. The two most common species (G. aphyae and G. macronychus) in this study were also the most common species reported in the literature on Gyrodactylus on European minnow [19,20]. Most commonly, only one Gyrodactylus species, rarely two, was observed on the individual hosts.…”

Section: Geographical Distribution Of Gyrodactylus Spp On Minnowssupporting

confidence: 67%

“…I found only four of these species (Figure 2) in an extensive survey throughout Norway (Paper III). Further, nine different Gyrodactylus species have been reported on minnow elsewhere in Eurasia 3 (Harris et al, 2008;Dorovskikh & Stepanov, 2008;Matějusová et al, 2000).…”

Section: Biology and Ecology Of Gyrodactylus Sppmentioning

confidence: 99%

“…Genetic studies suggest that both short-and long-distance translocations of minnows have occurred between Norwegian watercourses [17,18]. Several species of ectoparasites of the genera Gyrodactylus have been reported from minnow in Europe [9,19,20]. The diversity of Gyrodactylus spp.…”

Section: Introductionmentioning

confidence: 99%

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Genetic population structure ofGyrodactylus thymalli(Monogenea) in a large Norwegian river system

Pettersen

Hansen

et al. 2015

Parasitology

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The extent of geographic genetic variation is the result of several processes such as mutation, gene flow, selection and drift. Processes that structure the populations of parasite species are often directly linked to the processes that influence the host. Here, we investigate the genetic population structure of the ectoparasite Gyrodactylus thymalli Žitňan, 1960 (Monogenea) collected from grayling (Thymallus thymallus L.) throughout the river Glomma, the largest watercourse in Norway. Parts of the mitochondrial dehydrogenase subunit 5 (NADH 5) and cytochrome oxidase I (COI) genes from 309 G. thymalli were analysed to study the genetic variation and investigated the geographical distribution of parasite haplotypes. Three main clusters of haplotypes dominated the three distinct geographic parts of the river system; one cluster dominated in the western main stem of the river, one in the eastern and one in the lower part. There was a positive correlation between pairwise genetic distance and hydrographic distance. The results indicate restricted gene flow between sub-populations of G. thymalli, most likely due to barriers that limit upstream migration of infected grayling. More than 80% of the populations had private haplotypes, also indicating long-time isolation of sub-populations. According to a molecular clock calibration, much of the haplotype diversity of G. thymalli in the river Glomma has developed after the last glaciation.

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Section: Geographical Distribution Of Gyrodactylus Spp On Minnowscontrasting

confidence: 91%

Section: Geographical Distribution Of Gyrodactylus Spp On Minnowssupporting

confidence: 67%

Section: Biology and Ecology Of Gyrodactylus Sppmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Genetic population structure ofGyrodactylus thymalli(Monogenea) in a large Norwegian river system

Pettersen

Hansen

et al. 2015

Parasitology

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Multiple introduction pathways of non-native Phoxinus minnows (Teleostei: Leuciscidae) in Corsica revealed by its hidden diversity and their parasites

Esposito,

Denys,

Haÿ

et al. 2024

Biol Invasions

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The introduction of freshwater fish species is a leading cause of aquatic biodiversity erosion and can spread parasites to native populations. Hidden diversity evidenced by recent taxonomic revisions can add further complexity to the issue by rendering biological assessment data incomplete. The Eurasian minnows Phoxinus are one such example of cryptic diversity, with several described species being invasive. Current non-native fish populations in the small Mediterranean island of Corsica (France) are the result of successive waves of introductions, including several Phoxinus species. This study aims at determining which Phoxinus species were introduced to Corsica using the cytochrome oxidase subunit I barcoding marker, reconstructing their introduction routes and examining their parasite communities. The study found four species in Corsica: Phoxinus phoxinus and Phoxinus csikii mainly in the northernmost studied drainage basin and Phoxinus dragarum and Phoxinus septimaniae in the Tavignano drainage basin. P. phoxinus and P. csikii were most likely introduced through a live bait wholesaler while P. dragarum and P. septimaniae were probably introduced by recreational anglers bringing their bait from continental France. The molecular study of their Gyrodactylus (Platyhelminthes: Monogenea) parasites with the ITS marker allowed us to hypothesize inter-drainage basin secondary introduction routes for P. phoxinus and P. dragarum. In several sampling sites, Phoxinus minnows had black spot disease caused by encysted metacercariae of Digenea, likely Posthodiplostomum cuticola. These parasites were also found on the brown trout Salmo trutta in a locality where this patrimonial species co-occurs with Phoxinus minnows. Barcoding should be used in fish communities monitoring to help to accurately identify cryptic species.

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Unclear host taxonomy hinders parasite studies: An up‐to‐date checklist of the protozoan and metazoan parasites of Phoxinus minnows (Teleostei: Leuciscidae)

Esposito,

Denys,

Foata

et al. 2024

Journal of Fish Biology

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Phoxinus minnows are small freshwater fish found throughout Eurasia. The taxonomy of this genus is still under investigation, and new species are regularly described. They are frequently introduced outside their native range due to their use as live bait for angling, and such fish introductions can have diverse impacts on the recipient areas. Before the rise in interest regarding the diversity of this genus in the past 15 years, studies carried out on their biology and ecology reported their findings for the Eurasian minnow Phoxinus phoxinus Linnaeus, 1758, which was then considered ubiquitous. A parasites checklist for Phoxinus minnows has yet to be published, and the recent progress on the taxonomy of this genus has enabled us to propose a reassignment of parasite records to their proper host. The most thoroughly studied potential species were the North European species Phoxinus sp. 7 sensu Palandačić et al. 2017, Phoxinus isetensis, and P. phoxinus. We were able to highlight a gap in knowledge for numerous species that have received little‐to‐no attention in terms of parasitology. Systematic molecular identification of Phoxinus minnows should be conducted when studying their parasites, as a reliable identification of the host is vital in parasitology research. Future research will certainly reveal a species‐specific composition of the parasitofauna occurring in Phoxinus, especially among widespread parasites such as Gyrodactylus and Diplostomum. Such specificities could even become tools for assessing the introduction routes of Phoxinus species.

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Change in the structure of component parasite communities with host age

Cited by 7 publications

References 0 publications

Genetic population structure ofGyrodactylus thymalli(Monogenea) in a large Norwegian river system

Genetic population structure ofGyrodactylus thymalli(Monogenea) in a large Norwegian river system

Multiple introduction pathways of non-native Phoxinus minnows (Teleostei: Leuciscidae) in Corsica revealed by its hidden diversity and their parasites

Unclear host taxonomy hinders parasite studies: An up‐to‐date checklist of the protozoan and metazoan parasites of Phoxinus minnows (Teleostei: Leuciscidae)

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