Neurohormonal and glutamatergic neuronal control of the cardioarterial valves in the isopod crustaceanBathynomus doederleini

Author:

F.-Tsukamoto Yoko1,Kuwasawa Kiyoaki1

Affiliation:

1. Department of Biological Sciences, Tokyo Metropolitan University, 1-1 Minami-ohsawa, Hachioji 192-0397, Japan

Abstract

SUMMARYThe heart of Bathynomus doederleini gives rise to an anterior median artery (AMA), one pair of anterior lateral arteries (ALAs) and five pairs of lateral arteries (LAs). Cardioarterial valves are located at the junctions between the heart and arteries, each composed of a pair of muscular flaps. All valves of the AMA and the ALAs receive valve excitatory(constrictor) nerves (VEs). The valves of the ALAs receive dual innervation from both constrictor and inhibitor (dilator) nerves, while the valves of the AMA receive innervation from a constrictor nerve alone. The effects of candidate neurohormones on cardioarterial valves were examined by measuring the pressure in each artery at which haemolymph flows out of the heart through the valve. Serotonin, octopamine, norepinephrine, glutamate (Glu) and proctolin constricted the cardioarterial valves and thus decreased the arterial pressure in all the arteries. Dopamine also decreased the arterial pressure of arteries except for the ALAs, in which pressure was increased. Among the neurohormones exerting excitatory effects on the valves, only Glu depolarized the membrane potential of valve muscle cells. The glutamatergic agonists kainate and quisqualate also depolarized the valve muscle cells of the AMA. Excitatory junctional potentials produced in the valves of the AMA in response to the stimulation of a VE were blocked by the glutamatergic antagonists Joro spider toxin and MK-801. Glu is the likeliest candidate for a neurotransmitter for the VEs.

Publisher

The Company of Biologists

Subject

Insect Science,Molecular Biology,Animal Science and Zoology,Aquatic Science,Physiology,Ecology, Evolution, Behavior and Systematics

Reference52 articles.

1. Airriess, C. N. and McMahon, B. R. (1992). Aminergic modulation of circulatory performance in the crab, Cancer magister. In Phylogenetic Models in Functional Coupling of the CNS and Cardiovascular System, Comparative Physiology, vol.11 (ed. R. B. Hill and K. Kuwasawa), pp.123-131. Basel: Karger.

2. Alexandrowicz, J. S. (1932). The innervation of the heart of the crustacea. I. Decapoda. Q. J. Microsc. Sci.75,181-249.

3. Alexandrowicz, J. S. (1934). The innervation of the heart of crustacea. II. Stomatopoda. Q. J. Microsc. Sci.76,511-548.

4. Alexandrowicz, J. S. (1952). Innervation of the heart of Ligia oceanica.J. Mar. Biol. Assoc. UK31, 85-96.

5. Atwood, H. L. (1982). Synapses and neurotransmitters. In The Biology of Crustacea, vol.3 (ed. H. L. Atwood and D. C. Sandeman), pp.105-150. New York: Academic Press.

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