Prediction, from temperature, of eyeing, hatching and ‘swim‐up’ times for salmonid embryos
SUMMARY. 1. The literature contains a number of curves relating time (days) required for median hatch (=D 2 ) to water temperature (T,°C) for the eggs of several salmonid fishes. There are relatively few data on the relationships between time to median eyed (= D 1 ), days) or time to median swim‐up...
| Published in: | Freshwater Biology |
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| Main Author: | |
| Format: | Article in Journal/Newspaper |
| Language: | English |
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Wiley
1988
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| Online Access: | http://dx.doi.org/10.1111/j.1365-2427.1988.tb00325.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-2427.1988.tb00325.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-2427.1988.tb00325.x |
| Summary: | SUMMARY. 1. The literature contains a number of curves relating time (days) required for median hatch (=D 2 ) to water temperature (T,°C) for the eggs of several salmonid fishes. There are relatively few data on the relationships between time to median eyed (= D 1 ), days) or time to median swim‐up (= D 3 , days) and temperature. 2. From published data, over most of the range 0‐9.5°C, approximate relationships are D,=0.5D 2 for Atlantic salmon (Salmo salar L.) and D3 = 1.7D 2 for eight species of Salmo and Oncorhynchus. 3. Field and hatchery tests suggest that these are useful empirical models for approximate prediction of D 1 and D 3 from D 2 for most salmonids. |
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