Abstract
The population dynamics of Mytilicola intestinalis Steuer in mussels (Mytilus edulis L.) from the River Lynher, Cornwall, England, have been studied over 3 years. By transplanting uninfested mussels from the River Erme, South Devon, into the Lynher mussel bed, the study was extended to the growth and development of new infestations under natural conditions. Female Mytilicola intestinalis are shown to breed twice, and two generations of parasites coexist for most of the year, with recruitment taking place in summer and autumn. One generation contributes its first brood to the autumn recruits before overwintering and contributing its second brood to the following summer's recruits. The other generation overwinters as juvenile and immature stages to contribute its two broods successively to the summer and autumn recruits. Environmental temperatures are believed to control the rates of development at all stages rather than acting as triggers in the onset or cessation of breeding at specific times. There is no evidence to support the contention that heavily infested mussels are killed, and parasite mortality is shown to be density-independent.
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Literature Cited
Andreu, B.: Propagación del copépodo parásito Mytilicola intestinalis en el mijillón cultivado de la rías gallegas (N.W. de España). Investigación pesq. 24, 3–20 (1963)
Bolster, G.C.: The biology and dispersal of Mytilicola intestinalis Steuer, a copepod parasite of mussels. Fishery Invest., Lond. (Ser. 2) 18 (6), 1–30 (1954)
Boxshall, G.A.: The population dynamics of Lepeophtheirus pectoralis (Müller): dispersion pattern. Parasitology 69, 373–390 (1974)
Brienne, H.: Observations sur l'infestation des moules du pertuis Breton par Mytilicola intestinalis Steuer. Revue Trav. Off. (scient. tech.) Pêch. marit. 28, 205–230 (1964)
Campbell, S.A.: The occurrence and effects of Mytilicola intestinalis in Mytilus edulis. Mar. Biol. 5, 89–95 (1970)
Davey, J.T. and J.M. Gee: The occurrence of Mytilicola intestinalis Steuer, an intestinal copepod parasite of Mytilus, in the south-west of England. J. mar. biol. Ass. U.K. 56, 85–94 (1976)
Gee, J.M., L. Maddock and J.T. Davey: The relationship between infestation by Mytilicola intestinalis Steuer (Copepoda, Cyclopoidea) and the condition index of Mytilus edulis L. in South-West England. J. Cons. int. Explor. Mer 38, 300–308 (1977)
Grainger, J.N.R.: Notes on the biology of the copepod Mytilicola intestinalis Steuer. Parasitology 41, 135–142 (1951)
Hepper, B.T.: Environmental factors governing the infection of mussels by Mytilicola intestinalis. Fishery Invest., Lond. (Ser. 2) 20 (3), 1–21 (1955)
Hockley, A.R.: On the biology of Mytilicola intestinalis Steuer. J. mar. biol. Ass. U.K. 30, 223–232 (1951)
Iwao, S. and E. Kuno: An approach to the analysis of aggregation patterns in biological populations. In: Statistical ecology, pp 461–513. Ed. by G.P. Patil, E.C. Pielou and W.E. Waters. University Park & London: Pennsylvania State University Press 1971
Korringa, P.: Le Mytilicola intestinalis Steuer (Copepoda Parasitica) menace l'industrie moulière en Zélande. Revue Trav. Off. (scient. tech.) Pêch. marit. 17, 9–13 (1951)
—: Epidemiological investigations on the mussel parasite Mytilicola intestinalis Steuer, carried out in the Netherlands, 1951. Annls biol., Copenh. 8, 182–185 (1952)
Lloyd, M.: Mean crowding. J. Anim. Ecol. 36, 1–30 (1967)
Williams, C.S.: The life-history of Mytilicola intestinalis Steuer. J. Cons. int. Explor. Mer 32, 419–428 (1969)
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Communicated by J.H.S. Blaxter, Oban
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Davey, J.T., Gee, J.M. & Moore, S.L. Population dynamics of Mytilicola intestinalis in Mytilus edulis in south west England. Mar. Biol. 45, 319–327 (1978). https://doi.org/10.1007/BF00391818
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DOI: https://doi.org/10.1007/BF00391818