Delayed growth of mussel (Mytilus edulis) and scallop (Pecten maximus) veligers at low temperatures |
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Authors: | A R Beaumont M D Budd |
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Institution: | (1) Unit of Marine Invertebrate Biology, Marine Science Laboratories, Natural Environment Research Council, LL59 5EH Menai Bridge, Gwynedd, North Wales, UK |
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Abstract: | Veliger larvae of Mytilus edulis (L.) from Menai Straits, North Wales, were maintained for up to 2 mo during 1981 at 5°C and then grown on to metamorphosis at 17°C. Larvae so treated showed similar low mortality and equivalent spat production to control larvae. Growth rate at 17°C was less in treated larvae than in controls, but treated larvae grew a little during the period at low temperature. Larvae of Pecten maximus (L.) from the Irish Sea suffered high mortality at low temperature but larvae surviving 2 wk at 8°C could be grown on to spat at 17°C. The longevity of M. edulis larvae is discussed in relation to the genetic homogeneity of adult populations around the UK. |
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