Interactions between non-native armored suckermouth catfish (Loricariidae: Pterygoplichthys) and native Florida manatee (Trichechus manatus latirostris) in artesian springs

摘要: Non-native suckermouth armored catfishes (Loricariidae) of the genus Pterygoplichthys are now common throughout much peninsular Florida. In this paper, we present preliminary observations on interactions between a species, tentatively identified as P. disjunctivus (Weber, 1991), and endangered native Florida manatees, Trichechus manatus latirostris (Harlan, 1824), in artesian spring systems Florida's St. Johns River drainage. The introduced catfish have become abundant habitats, sites used by manatees winter thermal refuges. runs, regularly attaches to grazes epibiota their skin. On occasion, dozens congregate individual manatees. Manatee responses varied widely; some did not react visibly attached whereas others appeared agitated attempted dislodge fish. costs and/or benefits interaction remain unclear.