Effects of digenean trematodes and heterotrophic bacteria on mortality and burying capability of the common cockle Cerastoderma edule (L.)

Blanchet, Hugues; Raymond, N.; Montaudouin, Xavier de; Capdepuy, M.; Bachelet, Guy

doi:10.1016/s0022-0981(03)00215-6

Cited by 21 publications

(18 citation statements)

References 32 publications

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“…This observation suggests that in the field elevated temperatures induce the same behaviour, thus rendering stressed clams more vulnerable to predators. Similarly, Blanchet et al [69] found that in the edible cockle, Cerastoderma edule, mortality rates were significantly correlated with the mean water temperature, and four times higher for unburied cockles (42%) than for buried individuals (10%).…”

Section: Survival In Airmentioning

confidence: 83%

Effects of high temperatures on functional responses of haemocytes in the clam Chamelea gallina

Monari

Matozzo

Foschi

et al. 2007

Fish & Shellfish Immunology

163

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Section: Survival In Airmentioning

confidence: 83%

Effects of high temperatures on functional responses of haemocytes in the clam Chamelea gallina

Monari

Matozzo

Foschi

et al. 2007

Fish & Shellfish Immunology

163

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“…Bacterial infections, crowding and environmental stressors may e.g. be involved in bivalve surfacing independent of parasitism (Richardson et al, 1993;Mouritsen, 1997;Desclaux et al, 2002;Blanchet et al, 2003) However, such potential factors involved in surfacing were not investigated in this study. It could also be that cockles had surfaced due to such unknown factors and then got infected by the parasite afterwards.…”

Section: Discussionmentioning

confidence: 95%

Parasite Induced Summer Mortality in the Cockle Cerastoderma edule by the Trematode Gymnophallus choledochus

Thieltges

2006

Hydrobiologia

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In late summer 2004, a conspicuous cockle (Cerastoderma edule) mortality event was observed on a tidal flat in the northern Wadden Sea (North Sea, Germany) with many fresh valves and still living cockles lying on the sediment surface. To investigate whether trematode parasites utilizing the cockle as first or second intermediate host were involved in this mortality, buried and surfaced cockles were sampled and analyzed, and a laboratory experiment conducted. The field survey showed no statistical difference in intensity of parasites encysted in the foot of cockles. Three species of Himasthla utilizing the cockle as second intermediate host and known to impair the cockle's burrowing ability were found in buried cockles with 148.4±111.1 metacercariae/foot and in surfaced cockles with 164.2±84.4. There was also no difference in infection levels of parasites utilizing the cockles as second intermediate host in other cockle tissues between buried and surfaced cockles. In contrast, surfaced cockles showed a ten times higher prevalence (71.0%) than buried cockles (7.4%) of the trematode Gymnophallus choledochus -a parasite utilizing the cockle as first (and second) intermediate host -filling almost the entire body cavity and eliminating gonad structures. In an aquarium experiment of 14 days, all cockles found buried on the tidal flat survived compared to only 23.3% found on the surface. This suggests G. choledochus to be a castrating agent and a serious mortality factor in adult cockle populations.

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“…Previous studies have attempted to clarify the mechanisms by which cockles appeared at the surface of the sediment but they still remain unclear. Indeed, neither digenean trematode parasites nor bacterial load could fully account for this phenomenon (Desclaux et al, 2002;Blanchet et al, 2003). Similarly, Brown Muscle Disease did not totally explained R. philippinarum rise to the sediment surface (Dang and Montaudouin, 2009).…”

Section: Disseminated Neoplasia and Cockle Position In The Sedimentmentioning

confidence: 97%

Prevalence, intensity, and aneuploidy patterns of disseminated neoplasia in cockles (Cerastoderma edule) from Arcachon Bay: Seasonal variation and position in sediment

Grand

Kraffe

Montaudouin

et al. 2010

Journal of Invertebrate Pathology

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Effects of digenean trematodes and heterotrophic bacteria on mortality and burying capability of the common cockle Cerastoderma edule (L.)

Cited by 21 publications

References 32 publications

Effects of high temperatures on functional responses of haemocytes in the clam Chamelea gallina

Effects of high temperatures on functional responses of haemocytes in the clam Chamelea gallina

Parasite Induced Summer Mortality in the Cockle Cerastoderma edule by the Trematode Gymnophallus choledochus

Prevalence, intensity, and aneuploidy patterns of disseminated neoplasia in cockles (Cerastoderma edule) from Arcachon Bay: Seasonal variation and position in sediment

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