First observations of annualism in Millerichthys robustus (Cyprinodontiformes: Rivulidae)

By Dominguez-Castanedo, Omar, Miguel Ángel Mosqueda-Cabrera, Stefano Valdesalici

Ichthyological Explorations of Freshwaters, 24(1):15-20 Jul-2013


" Millerichthys robustus survives in ephemeral pond habitats from Papaloapan river basin in Mexico by producing drought-tolerant diapausing embryos. Four stages in fertilized embryos were observed: Dispersion/re-aggregation, Diapause I, Diapause II, and Diapause III confirming its annualism. Eggs extracted from soil when the pool was completely dry were found in Diapause I. The chorion surface ornamentation is reported for this species for the first time "

Classification: Physiology and diseases.

Language: English

Dominguez-Castanedo, Omar & Miguel Ángel Mosqueda-Cabrera, Stefano Valdesalici. 2013. "First observations of annualism in Millerichthys robustus (Cyprinodontiformes: Rivulidae)". Ichthyological Explorations of Freshwaters. 24(1):15-20 (ffm00924) (abstract)