Polydora in Oysters Suspended in the Water

Loosanoff, Victor L.; Engle, James B.

doi:10.2307/1538270

Cited by 73 publications

(56 citation statements)

References 3 publications

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“…Whether, as a result, the worm actually causes injury or harm to the oyster is not clear: loss of condition (Galtsoff 1964), occasional damage to the adductor muscle (Loosanoff & Engle 1943) and heavy mortalities (Roughley 1922) have all been reported as a result of mudworm infestation. Polydora websteri has been specifically pointed out by Komnga (1951) as causing injury to the European oyster.…”

Section: Discussionmentioning

confidence: 99%

Potential disease-causing organisms associated with mantle cavity of Pacific oyster Crassostrea gigas in northern New Zealand

Dinamani¹

1986

Dis. Aquat. Org.

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Bimonthly samples of oysters Crassostrea gigas examined from June 1979 to June 1981, as part of a disease monitoring survey, showed the presence of several organisms within their mantle cavity, such as copepods, nematodes, ciliates and mudworms. A rnyicolid copepod and an alloeocoel turbellarian appear to be persistent and facultative invaders. A peculiar association is that of a chironornid insect larva whlch probably completes its developmental stages withn the oyster. f i stopathological examination reveals occasional swelling and disorganisation of the connective tissue and leucocyte infiltration around the oyster gut and the digestive diverticula, but these are considered to be histological anomahes, probably seasonal in character. The possible role of associated organisms in disease transmission and in contributing to stress is discussed.

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Section: Discussionmentioning

confidence: 99%

Potential disease-causing organisms associated with mantle cavity of Pacific oyster Crassostrea gigas in northern New Zealand

Dinamani¹

1986

Dis. Aquat. Org.

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“…(3) Shell-boring polychaete worms (e.g., family Spionidae) that cause shell anomalies that may alter the effectiveness of this protective exoskeleton (Vermeij, 1978(Vermeij, , 1983a(Vermeij, ,b, 1987 and that may reduce host condition (e.g., Lunz, 1941;Loosanoff and Engle, 1943;Korringa, 1951;Murina and Solonchenko, 1991;Schleyer, 1991;Handley, 1997aHandley, , 1997bHandley, , 1998Diez et al, 2013;Neo et al, 2015). (4) Trematodes, a class within the phylum Platyhelminthes.…”

Section: Parasites Of Molluscsmentioning

confidence: 99%

The ecology, evolution, impacts and management of host–parasite interactions of marine molluscs

Coen

Bishop

2015

Journal of Invertebrate Pathology

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“…Gross putrefaction within shell blisters caused by the worms may then lead to the host's death (149). The Australian device of raising oyster trays off the bottom to minimize polychaete attack has an opposite effect on the Connecticut coast (79). There, however, the worm is not responsible for serious mortalities, although the numerous shell blisters resulting from heavy infestations render oysters unsightly and less saleable (85).…”

Section: Oysters and Other Organismsmentioning

confidence: 99%

Microecological Factors in Oyster Epizootics

Laird¹

1961

Can. J. Zool.

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On oyster beds as elsewhere, mud-water interfa-exhibit a biological film harboring saprobic microo~anisms. The nbundallce of thew is dimctly proportional to the amount of decornposin~f orpanic matter present. Different cornmunities of protozoa and bacteria characterize each of the levels of organic pollution, which may be defined biolo~ically in terms of a modification of the "Sapmbiensystem" of liolkwita ancl S I a m n , IVhile the microoqanims concerned are not conspic~ra~~s on clean s u b s t r m e x a p t where especially favorable conditions are afforded certain of them by some dead animal or plant, their general abundanm is indicative ~, f pollution. 'l'his follows nveraccumulation of reducible de osits, i~iitiated by irregular tidal flushing, freshets, and winter icing, and renzring the microenvironment anaerobic. O~trecn edulis and Cm~~sastrea uirginica s u r v i~e temporary exposure to thc direcl: effects of such conditians as well as to near-lethal tempcmtrrms, hut, weakened thereby, become vulnerable to invasion Iyy saprobes Irom the enriched biologkd film. Unless environmental conditions improve before the oysters lose ability to mover, abnormal mortalities will be hastened bv the activities or these microorganisms, notably Ifexu~nita imflala ( I'rotozoa ). lielevan t literature is reviewed, and possible local remedim are ili~cussed. Canadian data are supported by o r i~i d observatiom from W.=iles and Pakistan. Among other new host and locali@ records, CGtispira balbinndi (Spirnchaetales) and cercariae of a bucephalid trematode are lifted from Ostrea beklieri from Karachi. 'Manuscript received December 5, 1960. Contribution from the Institute of Parasitology, McGill University, Macdonald College P.O.. Oue.. with financial assistance from the National Research Council of Canada and the ~i s h e r z s ~e s e a r c h Board of Canada. aInstitute of Parasitology, McGill University, Macdonald College. C a n J. Zool. Vol. 39 (1961) Can. J. Zool. Downloaded from www.nrcresearchpress.com by University of Waterloo on 11/26/14 For personal use only. *Since this went to press my attention has been drawn to a research note by G. F. M. Smith (Science, 84, 157 (1936)) recording 0. stellarum from about 25% of a small collection of female A . vulgaris from Malpeque Bay oyster beds. Can. J. Zool. Downloaded from www.nrcresearchpress.com by University of Waterloo on 11/26/14 For personal use only. R l : y~~c h u r~a o~t a r rtuJ4rIo (Sto1,es) (33. 47, IlOJ Polvmastldun Uollingerifl dryxdali Kent (65, 71 I l c x i r r~r~l , r inj?otu 13ujordin (16.

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Polydora in Oysters Suspended in the Water

Cited by 73 publications

References 3 publications

Potential disease-causing organisms associated with mantle cavity of Pacific oyster Crassostrea gigas in northern New Zealand

Potential disease-causing organisms associated with mantle cavity of Pacific oyster Crassostrea gigas in northern New Zealand

The ecology, evolution, impacts and management of host–parasite interactions of marine molluscs

Microecological Factors in Oyster Epizootics

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