Attraction of slimy sculpins to chemical cues of brook charr eggs
In a laboratory study to examine the responses of slimy sculpin Cottus cognatus to chemical cues of brook charr Salvelinus fontinalis eggs, water that held freshly laid eggs (<20 min old), water‐hardened eggs (i.e. eggs >4 h old) or injured eggs was collected and used in a series of two‐choice...
| Published in: | Journal of Fish Biology |
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| Main Authors: | , |
| Format: | Article in Journal/Newspaper |
| Language: | English |
| Published: |
Wiley
2002
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| Subjects: | |
| Online Access: | http://dx.doi.org/10.1111/j.1095-8649.2002.tb00894.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1095-8649.2002.tb00894.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1095-8649.2002.tb00894.x |
| Summary: | In a laboratory study to examine the responses of slimy sculpin Cottus cognatus to chemical cues of brook charr Salvelinus fontinalis eggs, water that held freshly laid eggs (<20 min old), water‐hardened eggs (i.e. eggs >4 h old) or injured eggs was collected and used in a series of two‐choice tests. Slimy sculpin were exposed to paired stimuli of (1) hard egg water v . control water, (2) fresh egg water v . control water, (3) hard egg water v . injured egg water or (4) hard egg water v . fresh egg water. Sculpin spent considerably more time on the side of the tank with hard egg water and fresh egg water v . control water and injured egg water v . hard egg water. Sculpin did not show a preference for hard egg water v . fresh egg water. In a field study, brook charr were attracted to chemical cues from brook charr eggs, suggesting that brook charr eggs produce sufficient odour to attract some species under natural conditions. |
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