We investigated the metabolic rate of Western Atlantic hagfish ( Myxine limosa Girard, 1859) in response to cold temperatures, time of day and conspecific defensive slime exposure. Closed‐chamber respirometry was performed during acute stepwise cooling from 11 to 1°C (11, 9, 7, 5, 3 and 1°C), over a 24‐h period, and before and after exposure to conspecific slime. Overall, the metabolic rate decreased with temperature. However,...

The order Cyprinodontiformes contains an exceptional diversity of amphibious taxa, including at least 34 species from six families. These cyprinodontiforms often inhabit intertidal or ephemeral habitats characterized by low dissolved oxygen or otherwise poor water quality, conditions that have been hypothesized to drive the evolution of terrestriality. Most of the amphibious species are found in the Rivulidae, Nothobranchiidae...