Vol. 107 November 1983

The Journal of

Experimental BiologyEDITED BY

J.E.TREHERNE

WITH W.A. FOSTER & P.K. SCHOFIELDPAGE

COYER, PHILIP E. Responses of regularly-firing Aplysia Rj-Rn neurones to normoxia and hypoxia 1

TOEWS, D. P., HOLETON, G. F. AND HEISLER, N. Regulation of the acid-base status duringenvironmental hypercapnia in the marine teleost fish Conger conger 9

ELLIOTT, C. J. H. Wing hair plates in crickets: physiological characteristics and connections withstridulatory motor neurones 21

HAYES, TIMOTHY K. AND KEELEY, LARKY L. Patterns and control of neurosecretion for thecytochromogenic hormone in Blaberus discoidalis cockroaches 49

HAIM, A., HETH, G., PRATT, H. AND NSVO, E. Photoperiodic effects on thermoregulation in a'blind' subterranean mammal 59

ZERAHN, KARL. Comparison between active transport of Tl+, K+ and Rb* across the isolated short-circuited frog skin 65

HUDDART, H., BAYTON, E. AND SHANKLIN, J. Influence of some common methylxanthines on thecontractile responses and calcium mobilization of ileal, vas deferens and bladder smooth muscle 73

MORISAWA, M., SUZUKI, K., SHIMIZU, H., MORISAWA, S. AND YASUDA, K. Effects of osmolalityand potassium on motility of spermatozoa from freshwater cyprinid fishes 95

MORISAWA, M., SUZUKI, K. AND MORISAWA, S. Effects of potassium and osmolality on sperma-tozoan motility of salmonid fishes 105

YANG, QIN-ZHAO AND BURROWS, MALCOLM. The identification of motor neurones innervating anabdominal ventilatory muscle in the locust 115

BOLT, STEPHEN R. L. Haemolymph concentration and apparent permeability in varying salinityc o n d i t i o n s o f G a m m a r u s d u e b e n i , Chaetogammarus m a r i n u s a n d G a m m a r u s l o c u s t a . . . . 1 2 9

KOCH, FRANZ AND WIESER, WOLFGANG. Partitioning of energy in fish: can reduction of swimmingactivity compensate for the cost of production? HI

MUNOZ, DOUCLAS P., PAWSON, PETER A. AND CHASE, RONALD. Symmetrical giant neurones in

asymmetrical ganglia: implications for evolution of the nervous system in pulmonate molluscs 147

KRAHL, BODO AND ZERBST-BOROFFKA, IRENE. Blood pressure in the leech Hirudo medicinalis . 163

VAN DEN THILLART, GUIDO, RANDALL, DAVID AND HOA-REN, L I N . C O 2 and H+ excretion by

swimming coho salmon, Oncorhynchus kisutch 169DRAHELD, A. E. AND CHAPMAN, G. Diffusion of oxygen through the mesogloea of the sea anemone

Calliactis parasitica 181

CLARAC, F. AND CHASSERAT, C. Quantitative analysis of walking in a decapod crustacean, the rocklobster Jasus lalandii. I. Comparative study of free and driven walking 189

CHASSERAT, C. AND CLARAC, F. Quantitative analysis of walking in a decapod crustacean, the rocklobster Jasus lalandii. II. Spatial and temporal regulation of stepping in driven walking . . 219

Continued on back cover

Continued from front cover

GRAY, P. T . A. AND MILL, P. J. The mechanics of the predatory strike of the praying mantidHeirodula membranacea 245

NILSSON, HEUIO L. AND LINDSTROM, MAGNUS. Retinal damage and sensitivity loss of a light-sensitive crustacean compound eye (Cirolana borealis): electron microscopy and electro-physiology 277

GILLARY, HOWARD L. Electrical potentials from the regenerating eye of Strombus 293

WOAKES, A. J. AND BUTLER, P. J. Swimming and diving in tufted ducks, Aythya fuligula, with

particular reference to heart rate and gas exchange 311

BARBER, ANDREW. Nervous control of the salivary glands of the carnivorous mollusc Philine aperta 331

NEIL, D. M., SCHONE, H., SCAPINI, F. AND MIYAN, J. A. Optokinetic responses, visual adaptation

and multisensory control of eye movements in the spiny lobster, Palmurus vulgaris . . . . 349

CHAPPLE, WILLIAM D. Mechanical responses of a crustacean slow muscle 367

ZILL, SASHA N. AND FORMAN, ROBIN R. Proprioceptive reflexes change when an insect assumesan active, learned posture 385

KANOU, MASAMICHI AND SHIMOZAWA, T.VTEO. The elicitation of the predatory labial strike ofdragonfly larvae in response to a purely mechanical stimulus 391

WASHIO, HIROSHI AND MIYAMOTO, TAKENORI. Effect of lanthanum ions on neuromuscular trans-mission in insects 405

FARRELL, A. P., MACLEOD, K. R., DRIEDZIC, W. R. AND WOOD, S. Cardiac performance in the

in situ perfused fish heart during extracellular acidosis: interactive effects of adrenaline . . . 415

PASZTOR, V. M. AND BUSH, B. M. H. Graded potentials and spiking in single units of the oval organ,a mechanoreceptor in the lobster ventilatory system. I. Characteristics of dual afferent signalling 431

BUSH, B. M. H. AND PASZTOR, V. M. Graded potentials and spiking in single units of the oval organ,a mechanoreceptor in the lobster ventilatory system .11,1 ndividuality of the three afferent fibres 451

PASZTOR, V. M. AND BUSH, B. M. H. Graded potentials and spiking in single units of the oval organ,a mechanoreceptor in the lobster ventilatory system. III. Sensory habituation to repetitivestimulation 465

SATTELLE, D. B., HARROW, I. D. , H U E , B., PELHATE, M., GEPNER, J. I. AND HALL, L. M.

a-Bungarotoxin blocks excitatory synaptic transmission between cereal sensory neurones andgiant interneurone 2 of the cockroach, Periplaneta americana 473

SHORT COMMUNICATIONS

FAHIM, MOHAMMAD, MANCEL, ALLEN AND PRESSMAN, BERTON C. Effects of ionophore-

mediated transport on the cardiac resting potential 491

PARRY, D. A. Labial extension in the dragonfly larva Anax imperator 495

CORNELL, JOHN C. AND PAN, M. L. The disappearance of moulting fluid in the tobacco hornworm,

Manduca sexta 501

GODDEN, D. H. AND G RAH AM, D. 'Instant' analysis of movement 505

ARBAS, EDMUND A. Aerial manoeuvring reflexes in flightless grasshoppers 509

KONDOH, YASUHIRO AND HISADA, MITUHIKO. Intersegmental to intrasegmental conversion by

ganglionic fusion in lateral giant interneurones of crayfish 515NICOL, S. C , GLASS, M. L. AND HEISLER, N. Comparison of directly determined and calculated

plasma bicarbonate concentration in the turtle Chrysemys picta bellii at different temperatures S21INDEXES TO VOLUMES 102-107 i

The Company of Biologists Limited 1983

Department of Zoology, University of Cambridge, Downing Street, Cambridge CB2 3E]

ISSN: 0022-0949

© The Company of Biologists Limited 1983

Typeset & printed by the Pindar Group of Companies, Scarborough, North Yorkshire.