Size fluctuation in the eggs and newly hatched larvae of captive turbot (Scophthalmus maximus )
In: Journal of the Marine Biological Association of the United Kingdom. Cambridge University Press/Marine Biological Association of the United Kingdom: Cambridge. ISSN 0025-3154; e-ISSN 1469-7769, more
| |
Keywords |
Cells > Sexual cells > Eggs > Fish eggs Correlation Developmental stages > Larvae > Fish larvae Dimensions Environmental effects > Temperature effects Population factors > Length-weight relationships Temporal variations > Periodic variations > Seasonal variations Scophthalmus maximus (Linnaeus, 1758) [WoRMS] Marine/Coastal |
Abstract |
The aims of this study were to ascertain if individual turbot (Scophthalmus maximus) females show a seasonal decline in their egg-size when kept in conditions of constant temperature, and to relate turbot egg-size to the length and yolk-sac index of the emergent larva. Each female showed a significant seasonal egg-size decline and there was a positive correlation between egg-size and the length and yolk-sac index of the subsequent larva. However, larval length was not related to yolk-sac index, nor was the ratio of yolk-sac index:larval length related to egg-size. The maximum mean egg-size tended to increase with the female's weight and length. The implications of these findings are discussed in terms of the general ecology of turbot and its culture. |
|