...J. Anne Brown; Christopher S. Cobb; Susan C. Frankling; J. Cliff Rankin SUMMARY This study describes the first investigations of the physiological signals involved in activating the newly discovered cyclostome renin–angiotensin system (RAS) and its role in the river lamprey Lampetra fluviatilis...

... Lampetra fluviatilis In all classes of vertebrates, ablation of one vestibular organ (unilateral labyrinthectomy, UL) evokes severe motor disorders that include abnormal position of eyes, spontaneous ocular nystagmus, asymmetry in the head and trunk posture, etc. Over time, these disorders...

... reticulospinal system lamprey Lampetra fluviatilis Ichthyomyzon unicuspis The lamprey (Cyclostome) has been extensively used as a model for studying different aspects of motor control. The lamprey swims by lateral undulations of its body that are propagated in the rostro-caudal direction...

... of Biologists Limited 2001 2001 haemoglobin oxidation methaemoglobin temperature hagfish lamprey carp yellowfin tuna pig Myxine glutinosa Lampetra fluviatilis Cyprinus carpio Thunnus albacares Sus scrofa domesticus Haemoglobin (Hb) undergoes spontaneous oxidation...

... Haldane effect allosteric effects agnathan hagfish Myxine glutinosa lamprey Lampetra fluviatilis Reversible binding of hydrogen ions (H + ) to haemoglobin (Hb) is of central importance for blood CO 2 transport. Carbon dioxide produced in the tissues diffuses into the red blood cells...

...J. Anne Brown; J. Clifford Rankin ABSTRACT Previous studies have suggested that in the lamprey Lampetra fluviatilis , in contrast to teleost fish, all glomeruli are actively filtering. In the present study, we have applied the ferrocyanide technique to obtain more definitive values...

...Leila V. Virkki; Annika Salama; Mikko Nikinmaa ABSTRACT We have measured the effects of oxygen tension on the transport of Na + , K + and Cl − across the erythrocyte membrane of the lamprey Lampetra fluviatilis . The transport of each ion was affected by the oxygen tension of the medium. Hypoxic...

... study was to characterize further specific Cl − transport pathways, especially those involved in Cl − efflux, in the red blood cell membrane of Lampetra fluviatilis . Cl − efflux was inhibited by 0.05 mmol l −1 dihydroindenyloxyalkanoic acid (DIOA) (81 %), 1 mmol l −1 furosemide (76 %) and 0.1 mmol l −1...

...T. G. Deliagina ABSTRACT Removal of a vestibular organ (unilateral labyrinthectomy, UL) in the lamprey ( Lampetra fluviatilis ) results in a loss of equilibrium, so that the animal rolls (rotates around its longitudinal axis) almost continuously when swimming. This paper describes (i) UL-evoked...

... balance membrane function Petromyzon marinus Lampetra fluviatilis Haemoglobin function in lampreys has mainly been studied using (dilute) solutions (e.g. Wald and Riggs, 1951 ; Briehl, 1963 ; Antonini et al . 1964 ; Andersen and Gibson, 1971 ; Dohi et al . 1973 ; see also reviews...

... brainstem reticulospinal neurones medial octavolateral nucleus lateral line extraretinal photosensitivity dermal light sense Lampetra fluviatilis Petromyzon marinus Both larval and adult lampreys possess a dermal light sense confined to the tail region ( Parker, 1905 ; Young, 1935...

... when exposed to hypertonic medium. River lampreys, Lampetra fluviatilis ( N =40; 30–90 g), were caught during their spawning run from the rivers Kymijoki and Lestijoki, Finland, and were acclimated to laboratory conditions [dechlorinated Helsinki tapwater, 10–15 ˚C, oxygen tension , carbon...

... labyrinthectomized animals never maintained a linear trajectory in any plane, but turned continuously in all directions. ©The Company of Biologists Limited 1995 10 10 1994 lamprey locomotion orientation postural control vestibular system turning movement Lampetra fluviatilis...

... up. 10 10 1994 ©The Company of Biologists Limited 1995 lamprey locomotion orientation vision postural control Lampetra fluviatilis Petromyzon marinus The control of an animal’s orientation in space during motor activity requires integration of information from...

...Leila V. Virkki; Mikko Nikinmaa ABSTRACT The effects of intracellular acidification, osmotic shrinkage and (3 -adrenergic stimulation on sodium transport across the membrane of lamprey ( Lampetra fluviatilis ) erythrocytes were investigated. Unidirectional ouabain-insensitive sodium flux, measured...

.... REFERENCES Bentley , P. J. ( 1962 ). Permeability of the skin of the cyclostome Lampetra fluviatilis to water and electrolytes . Comp. Biochem. Physiol . 6 , 95 – 97 . 10.1016/0010-406X(62)90047-6 Bentley , P. J. & Follett , B. K. ( 1963 ). Kidney function...

... 18 2 1983 © 1983 by Company of Biologists 1983 Lampetra fluviatilis plasma colloid osmotic pressure Because of the comparatively low molecular weight of albumins, an albumin solution will exert a greater osmotic pressure than a globulin solution of similar concentration...