Abstract
Two experiments were undertaken to determine the effects of chlordiazepoxide on intraspecific attack behavior and selected non-aggressive behaviors in male Siamese fighting fish. In Exp. 1, pairs of fish fought while immersed in either 15 Μg/ml or 30 Μg/ml of chlordiazepoxide, or plain water. The drug groups showed significantly less attack (e.g., biting, jawlocking) than the control group, without noticeable behavioral toxicity. Also, in the drug groups alone, some variants of the copulatory clasp, seen in normal mating, occurred in many pairs. In Exp. 2, individual fish were isolated in one of the same doses or plain water for a period equivalent to that of Exp. 1. These doses produced no changes in measures of arousal, locomotion, and feeding behavior, as compared to the control condition. The drugrelated appearance of the intermale mating-like behavior is discussed in terms of a theoretical formulation postulating a mutually inhibitory relationship between sex and aggression in fish.
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References
Baenninger, R.: Waning of aggressive motivation in Betta splendens. Psychon. Sci. 4, 241–242 (1966)
Baenninger, R.: Catechol amines and social relations in Siamese fighting fish. Anim. Behav. 16, 442–447 (1968)
Brown, J. L., Hunsperger, R. W.: Neuroethology and motivation of agonistic behavior. Anim. Behav. 11, 439–448 (1963)
Clayton, F. L., Hinde, R. A.: The habituation and recovery of aggressive display in Betta splendens. Behaviour 30, 96–106 (1968)
Denny, M. R., Ratner, S. C.: Comparative psychology: Research in animal behavior (Rev. Ed.). Homewood, Ill.: Dorsey Press 1970
DiMascio, A.: The effects of benzodiazepines on aggression: Reduced or increased? Psychopharmacologia (Berl.) 30, 95–102 (1973)
Figler, M. H.: The relation between eliciting stimulus strength and habituation of threat behavior in male Betta splendens. Behaviour 42, 63–96 (1972)
Figler, M. H.: The effects of chlordiazepoxide (Librium) on the intensity and habituation of agonistic behavior in male Siamese fighting fish. Psychopharmacologia (Bed.) 33, 277–292 (1973)
Figler, M. H., Bennett, R. W.: Secobarbital sodium (Seconal) attenuates attack behavior in male Siamese fighting fish. Fed. Proc. 33, 466 (1974)
Figler, M. H., Klein, R. M.: Habituation of the appetitive components attenuates subsequent consummatory components of the agonistic sequence in male Siamese fighting fish (Betta splendens). Paper presented at the Meeting of the Animal Behavior Society, Champaign, Ill. (1974)
Figler, M. H., Klein, R. M., Radford, R. B.: The effects of chlordiazepoxide (Librium) on the attack behavior of male Siamese fighting fish, Betta splendens. Proc. Ann. Convent. Amer. Psychol. Ass. 8, 1027–1028 (1973)
Forselius, S.: Studies of anabantid fishes: I, II, and III. Zool. Bidrag. Fran Uppsala 32, 93–597 (1957)
Margolin, S., Kletzkin, M.: Pharmacological properties of anti-anxiety drugs. In: Principles of psychopharmacology, W. G. Clark and J. del Giudice, eds., pp. 303–311. New York: Academic Press 1970
Peeke, H. V. S.: Habituation of conspecific aggression in the three-spined stickleback (Gasterosteus aculeatus L.). Behaviour 35, 137–156 (1969)
Peeke, H. V. S., Peeke, S. C.: Habituation of conspecific aggressive responses in the Siamese fighting fish (Betta splendens). Behaviour 36, 232–245 (1970)
Rainwater, F. L., Miller, R. J.: Courtship and reproductive behavior of the Siamese fighting fish, Betta splendens Regan (Pisces, Belontiidae). Proc. Okl. Acad. Sci. 47, 98–114 (1966)
Sevenster, P.: A causal analysis of a displacement activity (fanning in Gasterosteus aculeatus). Behaviour, Suppl. 9, 1–170 (1961)
Shapiro, S., Shuckman, H.: Habituation and covariation of the components of the threat display in Betta splendens. Psychol. Rep. 28, 827–837 (1971)
Simpson, M. J. A.: The display of the Siamese fighting fish Betta splendens. Anim. Behav. Monogr. 1, whole issue (1968)
Valzelli, L.: Drugs and aggressiveness. In: Advances in pharmacology, S. Garattini and P. A. Shore, eds., Vol. 5, pp. 79–108. New York: Academic Press 1967
Winer, B. J.: Statistical principles in experimental design, 2nd ed. New York: McGraw-Hill 1971
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Figler, M.H., Klein, R.M. & Thompson, C.S. Chlordiazepoxide (librium)-induced changes in intraspecific attack and selected non-agonistic behaviors in male siamese fighting fish. Psychopharmacologia 42, 139–145 (1975). https://doi.org/10.1007/BF00429544
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DOI: https://doi.org/10.1007/BF00429544