Callibaetis floridanus

Banks, 1900

small minnow mayfly

Callibaetis floridanus is a small minnow (: ) to North and Central America. The inhabits diverse aquatic environments including coastal ponds subject to saltwater intrusion and temporary wetlands (playas) in arid regions. Research demonstrates significant physiological plasticity in ion regulation, with capable of acclimating to salinities ranging from 113 to 9,921 µS/cm. development averages approximately 24 days from hatch to adulthood.

Habitat

Coastal ponds experiencing routine saltwater intrusion; temporary wetlands (playas) in arid regions such as the Southern High Plains of Texas. The has been documented in aquatic systems with salinity ranging from 113 to 9,921 µS/cm.

Distribution

Central America; North America including Mexico, the southern United States, and the northeastern United States. Specific studied include coastal ponds subject to sea level rise effects and West Texas playas.

Life Cycle

development time averages 24±0.3 days from hatch to adulthood. Survival rates of 80±4.4% have been documented across experimental salinity treatments. No significant change in development time was observed across salinity gradients from 113 to 9,921 µS/cm.

Behavior

exhibit physiological plasticity in ion regulation, with strongly influencing Na, SO4, and Ca uptake rates. Individuals reared in low salinity (113 µS/cm) showed 10.8-fold higher Na uptake rates than those reared in high salinity (9,921 µS/cm) when transferred to dilute conditions. Conversely, saline-acclimated naiads exhibited reduced ion uptake when exposed to ion-rich water.

Tags

Sources and further reading