| genetic evidence for multiple sources of the non-native fish cichlasoma urophthalmus (günther; mayan cichlids) in southern florida. | the number and diversity of source populations may influence the genetic diversity of newly introduced populations and affect the likelihood of their establishment and spread. we used the cytochrome b mitochondrial gene and nuclear microsatellite loci to identify the sources of a successful invader in southern florida, usa, cichlasoma urophthalmus (mayan cichlid). our cytochrome b data supported an introduction from guatemala, while our microsatellite data suggested movement of mayan cichlids fr ... | 2014 | 25184569 |
| salinity effects on behavioural response to hypoxia in the non-native mayan cichlid cichlasoma urophthalmus from florida everglades wetlands. | 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 th ... | 2009 | 20735628 |
| infection by anisakid nematodes contracaecum spp. in the mayan cichlid fish 'cichlasoma (nandopsis)' urophthalmus (gunther 1862). | larval nematodes that parasitize the mayan cichlid fish 'cichlasoma (nandopsis)' urophthalmus (günther 1862) in southern florida were identified as contracaecum spp. (nematoda: anisakidae, anisakinae). the objective of this study was to determine whether infection intensity and prevalence of these parasites differ between a brackish water and freshwater habitat or through ontogeny in the freshwater habitat only. the nematodes were removed from the abdominal cavity of the fishes and counted. infe ... | 2004 | 15165067 |