The effects of the trematode Bucephalus polymorphus on the reproductive cycle of the zebra mussel Dreissena polymorpha in the Drava River

Lajtner, Jasna; Lučić, Andreja; Marušić, Marinko; Erben, Radovan

doi:10.2478/s11686-008-0011-1

Cited by 14 publications

(16 citation statements)

References 23 publications

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“…According to the broad consensus in previous studies that bivalves are severely impacted when acting as the first intermediate host (Jonsson & André 1992, Calvo-Ugarteburu & McQuaid 1998, da Silva et al 2002, Baudrimont et al 2006, Thieltges 2006b, Lajtner et al 2008, Dubois et al 2009), we expected a dramatic effect of Bucephalus minimus on cockle growth and condition index. Surprisingly, these effects were moderate.…”

Section: Effects Of Sporocysts On Cockle (First Intermediate Host) Fimentioning

confidence: 99%

“…Then, we selected 3 areas in our study region with cockle populations dis- Silva et al 2002, Baudrimont et al 2006, Thieltges 2006b, Lajtner et al 2008, Dubois et al 2009). …”

Section: Resale or Republication Not Permitted Without Written Consenmentioning

confidence: 99%

“…Then, we selected 3 areas in our study region with cockle populations dis-playing differing characteristics in terms of trematode infection. Considering the experimental design, we expected that different trematode communities would lead to contrasting effects on cockle fitness (as the second intermediate host) and that trematodes using cockles as the first intermediate host would have a detrimental effect, based on the broad consensus that bivalves are severely impacted at this stage (Jonsson & André 1992, Calvo-Ugarteburu & McQuaid 1998, da Silva et al 2002, Baudrimont et al 2006, Thieltges 2006b, Lajtner et al 2008, Dubois et al 2009). …”

Section: Introductionmentioning

confidence: 99%

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Effect of trematode parasites on cockle Cerastoderma edule growth and condition index: a transplant experiment

Montaudouin¹,

Bazairi²,

Culloty³

2012

Mar. Ecol. Prog. Ser.

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We quantified the effect of trematode parasites in cockles through a 303 d transplant experiment. Cockles were sampled in 3 different sites on the southwest coast of France characterized by 3 different trematode communities, i.e. Royan (RO): high Meiogymnophallus minutus abundance near cockle heart, South Arguin (SA): high Himasthla interrupta abundance in the mantle margin, and North Arguin (NA): almost free of trematodes. Sampled cockles were individually tagged and placed in different cages at Banc d'Arguin, Arcachon Bay. At the end of the experiment, RO cockles had lost their trematodes, highlighting the fact that trematode lifespan can be short, while SA cockles maintained their trematode load. When cockles were the second intermediate host, there was no effect of site of origin on cockle condition index and survival. The effect on growth rate was mostly due to initial cockle length. Within each treatment, the only significant effect of trematode infection on growth was found for H. interrupta at SA. The 23% growth deficit observed could be due to the disruption of cockle shell synthesis in the mantle margin. During the transplant experiment, cockles were also infected at an exceptionally high rate by Bucephalus minimus, a trematode which invades most of the tissues and uses the cockle as a first intermediate host. Surprisingly, there was an effect on the growth rate and condition index of cockles at only one of the sites under study. This field experiment succeeded in quantifying the moderately negative effect of trematode parasites on the growth and condition of their host and suggested the existence of interactions with as yet unknown factors. KEY WORDS: Cerastoderma edule · Parasitism · Growth · Mortality · Condition index · Transplant experiment Resale or republication not permitted without written consent of the publisherMar Ecol Prog Ser 471: [111][112][113][114][115][116][117][118][119][120][121] 2012 Cerastoderma edule. A recent census listed 16 species associated with trematodes, from Norway to South Morocco, including the British Isles (de ). In the first intermediate host, the parasite reproduces asexually and invades most host tissues, resulting in dramatic effects such as castration or death. This is the sporocyst or rediae stage, leading to the emission in the water body of thousands of new parasite propagules called cercariae. The parasite prevalence at this stage (i.e. percentage of infected hosts) is generally low, and the effect at the population scale is small. However, under certain environmental conditions (often remaining unidentified), prevalence reaches dramatically high values and is correlated with mass mortality (Jonsson & André 1992). Cercariae that are shed by the first intermediate host have only a few hours to infect the second intermediate host and to settle as a latent stage called the metacercariae. The effect on these second intermediate hosts seems less deleterious, since metacercariae do not reproduce in the host tissues: they wait for their host to be pred...

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Section: Effects Of Sporocysts On Cockle (First Intermediate Host) Fimentioning

confidence: 99%

“…Then, we selected 3 areas in our study region with cockle populations dis- Silva et al 2002, Baudrimont et al 2006, Thieltges 2006b, Lajtner et al 2008, Dubois et al 2009). …”

Section: Resale or Republication Not Permitted Without Written Consenmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effect of trematode parasites on cockle Cerastoderma edule growth and condition index: a transplant experiment

Montaudouin¹,

Bazairi²,

Culloty³

2012

Mar. Ecol. Prog. Ser.

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“…After this peak in infection, prevalence dropped from 17% in August to 5% in November. Apart from recruitment or immigra- (Lajtner et al 2008), and Ruditapes decussatus (grooved carpet shell)/ Cercaria lata (Gargouri Ben Abdallah et al 2009). In all cases, the sporocysts or rediae progressively invade the whole host and it becomes difficult to distinguish parasite tissues from host tissues.…”

Section: Discussionmentioning

confidence: 99%

Bacciger bacciger (Trematoda: Fellodistomidae) infection effects on wedge clam Donax trunculus condition

Montaudouin¹,

Bazairi²,

Mlik³

et al. 2014

Dis. Aquat. Org.

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Wedge clams Donax trunculus inhabit high-energy environments along sandy coasts of the northeastern Atlantic Ocean and the Mediterranean Sea. Two sites were sampled monthly, one in Morocco (Mehdia), where the density was normal, and one in France (Biscarosse), where the density was very low. We tested the hypothesis that the difference in density between the sites was related to infection by the trematode parasite Bacciger bacciger. Identity of both the parasite and the host were verified using anatomical and molecular criteria. Parasite prevalence (i.e. the percentage of parasitized clams) was almost 3 times higher at Biscarosse. At this site, overall prevalence reached 32% in July and was correlated with the migration of several individuals (with a prevalence of 88%) to the sediment surface. After this peak, prevalence decreased rapidly, suggesting death of parasitized clams. The deleterious effect of B. bacciger on wedge clams was also supported by our calculations indicating that the weight of the parasite made up to 56% of the total weight of the parasitized clams. However, condition indices of trematode-free clams were also lower in Biscarosse than in Mehdia or other sites, suggesting that other factors such as pollutants or microparasites (Microcytos sp.) may alter wedge clam population fitness in Biscarosse.

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“…Seven genera of trematodes have been reported as parasites of Dreissena spp. : Bucephalus (Digenea: Bucephalidae), Phyllodistomum (Digenea: Gorgoderidae), Echinoparyphium and Echinostoma (Digenea: Echinostomatidae), Sanguinicola (Digenea: Sanguinicolidae), Leucochloridiomorpha (Digenea: Brachylaemidae) and Aspidogaster (Aspidogastrea: Aspidogastridae) (Conn & Conn, 1995;Molloy et al, 1997;Laruelle et al, 2002;Peribanez et al, 2006, Lajtner et al, 2008 …”

Section: Introductionmentioning

confidence: 99%

Presence of Bucephalus polymorphus, Echinoparyphium recurvatum and Aspidogaster limacoides (Platodes, Trematoda) in the visceral mass of Dreissena polymorpha (Mollusca, Bivalvia)

Lajtner

2012

Helminthologia

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The invasive bivalve species Dreissena polymorpha (Pallas, 1771) has become one of the most dominant species in many lakes and rivers of Europe and North America. The aim of this study was to investigate changes in the structure of the visceral mass depending on the reproductive cycle and to determine the presence and effects of trematodes on the zebra mussel. Mussels were collected from the Dubrava dam reservoir during eight sampling sessions from January to December 2000. For histological analysis, 80 mussels were placed in Bouin's fixative for 24 hours, embedded in paraffin and cut with a microtome into 10 µm slices. The sections were then stained with haematoxylin and eosin. Analysis of non-infected bivalves indicated that gametogenesis started in late summer, while spawning began in April. In July, the majority of mussels were in the post-spawning stage. Two mussels were infected with Bucephalus polymorphus, one with Echinoparyphium recurvatum and one with Aspidogaster limacoides. Obtained results demonstrated that the gonads were the most affected organs in mussels infected by B. polymorphus, the infection by A. limacoides resulted in a significant reduction of all investigated organs, while the infection by E. recurvatum had no visible pathogenic changes in the structure of visceral mass. Keywords: zebra mussel; Dreissena polymorpha; trematodes; Bucephalus polymorphus Echinoparyphium recurvatum; Aspidogaster limacoides IntroductionThe invasive bivalve species zebra mussel (Dreissena polymorpha, Pallas, 1771) is a Ponto-Caspian species that began to spread throughout the watercourses of Europe in the early 19th century (Morton, 1969;Stanczykowska, 1977), and its spread continues today. This species began to colonize Croatian waterbodies only in the 1980s, when .... it began to spread from the Danube upstream into the Drava River. In the early 1990s, D. polymorpha was first found in the Dubrava dam reservoir lake (Erben et al., 2000). In the meantime, it has spread upstream to the Čakovec dam reservoir lake and the Varaždin dam reservoir lake, and is currently present throughout the entire course of the Drava River flowing through Croatia (Lajtner et al. 2004;Erben et al., 2009). In 1985, this species was reported in the Great Lakes of North America (Hebert et al., 1989) and quickly spread to new areas. Wherever this species appears, it quickly becomes very abundant within freshwater ecosystems and has thus resulted in significant ecological and economic impacts. This species has also been a vector for the spread of other species, especially endosymbionts Burlakova et al., 2000). Molloy et al. (1997) listed 34 taxa of endosymbionts, including ciliates, trematodes, nematodes, chironomids, oligochaetes, mites and leeches associated with Dreissena. Seven genera of trematodes have been reported as parasites of Dreissena spp.: Bucephalus (Digenea: Bucephalidae), Phyllodistomum (Digenea: Gorgoderidae), Echinoparyphium and Echinostoma (Digenea: Echinostomatidae), Sanguinicola (Digenea: Sanguinicolidae), Leucochlor...

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The effects of the trematode Bucephalus polymorphus on the reproductive cycle of the zebra mussel Dreissena polymorpha in the Drava River

Cited by 14 publications

References 23 publications

Effect of trematode parasites on cockle Cerastoderma edule growth and condition index: a transplant experiment

Effect of trematode parasites on cockle Cerastoderma edule growth and condition index: a transplant experiment

Bacciger bacciger (Trematoda: Fellodistomidae) infection effects on wedge clam Donax trunculus condition

Presence of Bucephalus polymorphus, Echinoparyphium recurvatum and Aspidogaster limacoides (Platodes, Trematoda) in the visceral mass of Dreissena polymorpha (Mollusca, Bivalvia)

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