Following the observation of periodic high concentrations of zinc in estuarine waters used in the White Fish Authority's oyster hatchery at Conway, North Wales, two beaker trials were conducted to study the effect of zinc, over the range recorded, on the young stages of larvae of Crassostrea glgas.
Effect of zinc on the settlement of the oysterCrassostrea gigas
โ Scribed by C. R. Boyden; H. Watling; I. Thornton
- Publisher
- Springer-Verlag
- Year
- 1975
- Tongue
- English
- Weight
- 614 KB
- Volume
- 31
- Category
- Article
- ISSN
- 0025-3162
No coin nor oath required. For personal study only.
โฆ Synopsis
The influence of zinc upon the pattern and success of settlement was examined in the oysterCrassostrea gigas. Late larvae were more tolerant of zinc than embryos. A delay in settlement was recorded in treatments containing zinc as low as 125 ug/l, and numbers of larvae settling was reduced in the presence of zinc. Larvae subjected to zinc immediately prior to settlement showed evidence of slowing in behavioural development. Those larvae which settled in the presence of zinc, however, when ongrown in clean water were as viable as controls. Zinc at concentrations of 250 and 500 ug/l suppressed spat growth, but recovery was rapid upon subsequent on-growing in clean water conditions.
๐ SIMILAR VOLUMES
The combined effects of temperature, salinity and nutrition on survival and growth of larvae of the Mediterranean mussel Mytilus galloprovincialis and the Japanese oyster Crassostrea gigas were studied over a period of 7 d in the laboratory. Ripe adults, collected in spring and summer 1987 from natu
## Abstract Interspecific hybridization of bivalve molluscs within the genera __Crassostrea__ and __Pinctada__ have yielded progeny of one parental type, leading to speculation of gynogenetic or androgenetic development. Therefore, meiotic and early mitotic events of oocytes from the oysters __Cras