Some effects of stress in the adult on the eggs and larvae of Mytilus edulis L.
In: Journal of Experimental Marine Biology and Ecology. Elsevier: New York. ISSN 0022-0981; e-ISSN 1879-1697, more |  |
| Keywords | Cells > Sexual cells > Eggs
Developmental stages > Larvae
Population functions > Growth
Spawning
Starvation
Mytilus edulis Linnaeus, 1758 [WoRMS]
Marine/Coastal |
| Authors | | Top | - Bayne, B.L.
- Gabbott, P.A.
- Widdows, J., more
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| Abstract | M. Edulis were fed with Tetraselmis cells labelled with 14C, and dept in the lab under various experimental conditions. The physiological condition of the mussels was assessed by estimating the 'scope for growth'. The mussels were then induced to spawn, and biochemical and radiochemical analyses of the eggs and larvae, and measurement of the rate of growth of the larvae, and measurement of the rate of growth of the larvae, carried out. When the mussels were starved, more 14C label was transferred to the eggs than when the mussels were well fed, suggesting that whereas fed animals utilized food mainly for maintenance metabolism, starved animals, with a reduced metabolic demand, transferred the 14C label mainly to the developing eggs. Much of this 14C label was subsequently found in the lipid fraction of the eggs. These spawned eggs contained a large amount of lipid, and during early embryonic development their lipid content declined markedly, suggesting that embryo genesis took place largely at the expense of the lipid reserves of the egg. Also during early larval developed phospholipids made a significant contribution to energy metabolixm. The larvae that developed from the gametes of 'stressed' adults has a lower rate of growth than larvae from 'unstressed' adults. |
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