Callibaetis floridanus

Banks, 1900

small minnow mayfly

Callibaetis floridanus is a small minnow mayfly (Ephemeroptera: Baetidae) native 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. Naiad development averages approximately 24 days from hatch to adulthood.

Callibaetis floridanus by (c) Victor Engel, some rights reserved (CC BY), uploaded by Victor Engel. Used under a CC-BY license.

Callibaetis floridanus by (c) Luiz Puodzius, some rights reserved (CC BY), uploaded by Luiz Puodzius. Used under a CC-BY license.

Callibaetis floridanus P1590759a by
xpda. Used under a CC BY-SA 4.0 license.

Pronunciation

How to pronounce Callibaetis floridanus: /ˌkælɪˈbeɪtɪs flɔrɪˈdænəs/

These audio files are automatically generated. While they are not always 100% accurate, they are a good starting point.

Images

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

Naiad 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

Naiads exhibit physiological plasticity in ion regulation, with acclimation history 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.