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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...
In collection:Comparative biomechanics of movement
Kevin T. Du Clos, John O. Dabiri, John H. Costello, Sean P. Colin, Jennifer R. Morgan, Stephanie M. Fogerson, Brad J. Gemmell
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
J Exp Biol (1999) 202 (14): 1963–1968.
Published: 15 July 1999
...Frank B. Jensen ABSTRACT Agnathans, comprising lamprey and hagfish species, have been reported to be practically devoid of HCO 3 − /Cl − exchange across the red blood cell membrane. This suggests that the capacity of their haemoglobin (Hb) to remove H + is essential for obtaining a high CO 2...
J Exp Biol (1999) 202 (8): 939–946.
Published: 15 April 1999
...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...
J Exp Biol (1998) 201 (12): 1927–1937.
Published: 15 June 1998
...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...
J Exp Biol (1998) 201 (11): 1799–1808.
Published: 1 June 1998
...T. Toop; D. Grozdanovski; I. C. Potter ABSTRACT Iodinated atrial natriuretic peptide (ANP) binding sites were examined in the gills and ventral aorta of the adult upstream-migrating lamprey Geotria australis using tissue section autoradiography, in vitro competition analysis and affinity cross...
J Exp Biol (1998) 201 (6): 869–875.
Published: 15 March 1998
...Thelma L. Williams; Graham Bowtell; N. A. Curtin ABSTRACT Experiments were performed on single-myotome preparations of lamprey muscle, to discover whether force developed by intermittent tetanic stimulation during imposed sinusoidal movement could be predicted by data collected from isometric...
J Exp Biol (1998) 201 (5): 693–700.
Published: 1 March 1998
...Anna Yu. Bogdanova; Alexander O. Sherstobitov; Gennadii P. Gusev ABSTRACT The existence of a furosemide-sensitive Cl − transport pathway activated by external Ca 2+ and Mg 2+ has been demonstrated previously in studies of Cl − influx across the lamprey erythrocyte membrane. The aim of the present...