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Keywords: Lamprey
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Journal Articles
J Exp Biol (2020) 223 (Suppl_1): jeb206433.
Published: 1 February 2020
...Joshua R. York; David W. McCauley; Michael H. Dickinson; Leslie B. Vosshall; Julian A. T. Dow ABSTRACT Lampreys and hagfishes are the only surviving relicts of an ancient but ecologically dominant group of jawless fishes that evolved in the seas of the Cambrian era over half a billion years ago...
Journal Articles
J Exp Biol (2019) 222 (22): jeb212464.
Published: 18 November 2019
..., particularly for anguilliform swimmers, such as the sea lamprey Petromyzon marinus . For this study, we compared the kinematics and hydrodynamics of larval sea lampreys with those of lampreys accelerating from rest during escape swimming. We used experimentally derived velocity fields to calculate pressure...
Journal Articles
J Exp Biol (2012) 215 (3): 416–425.
Published: 1 February 2012
...Megan C. Leftwich; Eric D. Tytell; Avis H. Cohen; Alexander J. Smits SUMMARY A robotic lamprey, based on the silver lamprey, Ichthyomyzon unicuspis , was used to investigate the influence of passive tail flexibility on the wake structure and thrust production during anguilliform swimming...
Journal Articles
J Exp Biol (2010) 213 (1): 89–107.
Published: 1 January 2010
... different virtual swimmers: a carangiform swimmer (i.e. a mackerel swimming like mackerel do in nature); an anguilliform swimmer (i.e. a lamprey swimming like lampreys do in nature); a hybrid swimmer with anguilliform kinematics but carangiform body shape (a mackerel swimming like a lamprey); and another...
Journal Articles
J Exp Biol (2009) 212 (4): 576–592.
Published: 15 February 2009
... varied. The virtual swimmer is a 3-D lamprey-like flexible body undulating with prescribed experimental kinematics of anguilliform type. Simulations are carried out for three Reynolds numbers spanning the transitional and inertial flow regimes, Re =300, 4000(viscous flow), and ∞ (inviscid flow). The net...
Journal Articles
J Exp Biol (2008) 211 (10): 1559–1564.
Published: 15 May 2008
...O. S. E. Gustafsson; S. P. Collin; R. H. H. Kröger SUMMARY Jawless fishes (Agnatha; lampreys and hagfishes) most closely resemble the earliest stage in vertebrate evolution and lamprey-like animals already existed in the Lower Cambrian [about 540 million years ago (MYA)]. Agnathans are thought...
Journal Articles
J Exp Biol (2008) 211 (6): 978–988.
Published: 15 March 2008
...Patrick Reis-Santos; Stephen D. McCormick; Jonathan M. Wilson SUMMARY Ammocoetes of the anadromous sea lamprey Petromyzon marinus L. spend many years in freshwater before metamorphosing and migrating to sea. Metamorphosis involves the radical transformation from a substrate-dwelling,filter feeder...
Journal Articles
J Exp Biol (2004) 207 (26): 4595–4603.
Published: 15 December 2004
...Elena L. Pavlova; Lyudmila B. Popova; Grigori N. Orlovsky; Tatiana G. Deliagina SUMMARY Removal of a vestibular organ (unilateral labyrinthectomy, UL) in the lamprey results in a loss of equilibrium, so that the animal rolls (rotates around its longitudinal axis) when swimming. Owing to vestibular...
Journal Articles
J Exp Biol (2004) 207 (20): 3447–3462.
Published: 15 September 2004
...Helmut Bartels; Ian C. Potter SUMMARY Lampreys, one of the only two surviving groups of agnathan (jawless)vertebrates, contain several anadromous species that, during their life cycle,thus migrate from fresh to seawater and back to freshwater. Lampreys have independently evolved the same overall...
Journal Articles
J Exp Biol (2003) 206 (15): 2557–2566.
Published: 1 August 2003
...Pavel V. Zelenin; Sten Grillner; Grigori N. Orlovsky; Tatiana G. Deliagina SUMMARY The lamprey swims by caudally directed lateral undulations of its body. During swimming the animal is oriented with its dorsal side up, and any deviation from this posture (roll tilt) elicits a corrective motor...
Journal Articles
J Exp Biol (2003) 206 (8): 1397–1408.
Published: 15 April 2003
...Hayden-William Courtland; Glenda M. Wright; Robert G. Root; M. Edwin DeMont SUMMARY In contrast to all other vertebrate cartilages, the major extracellular matrix protein of lamprey cartilages is not collagen. Instead, there exists a unique family of noncollagenous structural proteins...
Journal Articles
J Exp Biol (2002) 205 (23): 3707–3716.
Published: 1 December 2002
...Malinda R. Boyd; Andrew D. McClellan SUMMARY In larval lamprey, locomotor activity recorded from whole animals and in vitro brain/spinal cord preparations was analyzed to determine how two parameters of locomotor activity, burst proportion (BP; relative duration of motor burst activity...
Journal Articles
J Exp Biol (2001) 204 (13): 2361–2370.
Published: 1 July 2001
...Li Guan; Tim Kiemel; Avis H. Cohen SUMMARY A semi-reduced, minimally restrained lamprey preparation was used to investigate the impact of movement and movement-related feedback during d -glutamate-induced locomotion. The preparation consisted of the trunk alone with the spinal cord exposed...
Journal Articles
J Exp Biol (2001) 204 (11): 2029–2033.
Published: 1 June 2001
...Frank B. Jensen SUMMARY Autoxidation of oxyhaemoglobin (oxyHb) to methaemoglobin was measured at different temperatures in haemoglobin solutions from Atlantic hagfish, river lamprey, common carp, yellowfin tuna and pig. The aims were to evaluate the impact of the absent distal histidine in hagfish...
Journal Articles
J Exp Biol (1992) 169 (1): 105–119.
Published: 1 August 1992
...B. L. TUFTS; B. BAGATTO; B. CAMERON Exercise in sea lampreys resulted in a significant decrease in the extracellular pH (pHe) in both arterial and venous blood. At rest, the erythrocyte pH (pHi) of venous blood was significantly greater than the pHi of arterial blood. Despite the considerable...
Journal Articles
J Exp Biol (1989) 144 (1): 565–576.
Published: 1 July 1989
...B. L. TUFTS; R. G. BOUTILIER Carbon dioxide transport and ion distributions were examined in the blood of the lamprey, Petromyzon marinus . Over the P CO CO2 range studied, the erythrocytes had the highest total CO 2 content, followed by whole blood and true plasma. The nonbicarbonate buffer values...
Journal Articles
J Exp Biol (1988) 136 (1): 351–361.
Published: 1 May 1988
...LEONA MATTSOFF; MIKKO NIKINMAA We studied the effects of acute external acidification on the acid-base status and plasma and red cell ion concentrations of lampreys. Mortality was observed within 24 h at pH5 and especially at pH4. The main reason for the high sensitivity of lampreys to acid water...
Journal Articles
J Exp Biol (1984) 112 (1): 337–357.
Published: 1 September 1984
...STEN GRILLNER; PETER WALLÉN The lamprey spinal cord, in isolation or with the brainstem, can be used in vitro . The motor patterns underlying the swimming movements can be elicited by: (1) a pharmacological activation of a specific type of neuronal receptor (NMDA-receptor), that may in other...