Salinity effects on behavioural response to hypoxia in the non-native Mayan cichlid Cichlasoma urophthalmus from Florida Everglades wetlands
Journal of Fish Biology
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Abstract
This study quantified the hypoxia tolerance of the Mayan cichlid Cichlasoma urophthalmus over a range of salinities. The species was very tolerant of hypoxia, using aquatic surface respiration (ASR) and buccal bubble holding when oxygen tensions dropped to <20 mmHg (c. 1??0 mg l-1) and 6 mmHg, respectively. Salinity had little effect on the hypoxia tolerance of C. urophthalmus, except that bubble holding was more frequent at the higher salinities tested. Levels of aggression were greatest at the highest salinity. The ASR thresholds of C. urophthalmus were similar to native centrarchid sunfishes from the Everglades, however, aggression levels for C. uropthalmus were markedly higher. ?? 2009 The Fisheries Society of the British Isles.
Suggested Citation
Schofield, P., Loftus, W., and Fontaine, J., 2009, Salinity effects on behavioural response to hypoxia in the non-native Mayan cichlid Cichlasoma urophthalmus from Florida Everglades wetlands: Journal of Fish Biology, v. 74, no. 6, p. 1245-1258, https://doi.org/10.1111/j.1095-8649.2009.02192.x.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Salinity effects on behavioural response to hypoxia in the non-native Mayan cichlid Cichlasoma urophthalmus from Florida Everglades wetlands |
| Series title | Journal of Fish Biology |
| DOI | 10.1111/j.1095-8649.2009.02192.x |
| Volume | 74 |
| Issue | 6 |
| Publication Date | April 06, 2009 |
| Year Published | 2009 |
| Language | English |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Journal of Fish Biology |
| First page | 1245 |
| Last page | 1258 |