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Growth, production and biomass of the burrowing protobranch mollusc Yoldia limatula in the Bideford River, Prince Edward Island, Canada

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Samples of the population of Yoldia limatula Say were obtained from the Bideford River, Malpeque Bay, Prince Edward Island, Canada, during the summers of 1979 and 1980 by means of a dredge and a Ponar grab sampler. Size frequency analysis demonstrated that individuals in the size range 25- to 35-mm shell length were numerically dominant in May, June and July. Recruitment of juveniles in August resulted in the dominance of individuals of 5 mm and smaller which comprised 50% of the population at that time. The overall sex ratio was 48.8% males to 51.2% females. From annual lengths measured at successive winter growth bands it was determined that one-yr olds attained a shell length of between 13.8 and 17.7 mm, two-yr olds between 26.7 and 28.0 mm, three-yr olds between 33.8 and 35.2 mm, and foru-yr olds had a mean length of 38.7 mm. Y. limatula produced a croppable annual yield of between 1.19 and 2.65 g dry tissue weight m-2 with P/B ratios of 0.65 and 1.45 respectively.

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Communicated by R. O. Fournier, Halifax

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Lewis, J.B., Saleh, S., Reiswig, H.M. et al. Growth, production and biomass of the burrowing protobranch mollusc Yoldia limatula in the Bideford River, Prince Edward Island, Canada. Mar. Biol. 70, 173–179 (1982). https://doi.org/10.1007/BF00397682

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  • Biomass
  • Size Range
  • Frequency Analysis
  • Shell Length
  • Tissue Weight