... Chasmagnathus granulatus , which allows investigation of the processes of looming detection and escape decision at both the behavioral and neuronal levels. By analyzing the escape response of the crab in a walking simulator device we show that: (i) a robust and reliable escape response can be elicited...

...Griselda Genovese; Mihaela Senek; Nicolás Ortiz; Mariana Regueira; David W. Towle; Martín Tresguerres; Carlos M. Luquet SUMMARY The effects of dopamine (DA) and dopaminergic agonists and antagonists on ion transport were studied in isolated perfused gills of the crab Chasmagnathus granulatus . DA...

...Horst Onken; Martin Tresguerres; Carlos M. Luquet SUMMARY Split lamellae of posterior gills of Chasmagnathus granulatus adapted to 2.5‰ salinity were mounted in a modified Ussing chamber. With NaCl-saline on both sides of the preparation a transepithelial voltage( V te ) of 4.1±0.5 mV (outside...

...M. Tresguerres; H. Onken; A. F. Pérez; C. M. Luquet SUMMARY In the present study, the influence of short-term osmotic variations on some electrophysiological properties related to NaCl absorption across posterior gills of Chasmagnathus granulatus was investigated. The transepithelial potential...

...Alejandro Delorenzi; Beatriz Dimant; Lia Frenkel; Victor E. Nahmod; Dick R. Nässel; Héctor Maldonado ABSTRACT Previous work on the brackish-water crab Chasmagnathus granulatus demonstrated that an endogenous peptide similar to angiotensin II plays a significant role in enhancing long-term memory...