Adaptive advantages of maternal care and matriphagy in a foliage spider, Chiracanthium japonicum (Araneae: Coubionidae) Authors
Received: 22 October 1998 Accepted: 15 March 1999 DOI:
Cite this article as: Toyama, M. J Ethol (1999) 17: 33. doi:10.1007/BF02769295
I examined the function of maternal care in a foliage spider,
Chiracanthium japonicum. Females of this species make breeding nests with rolled-up grass leaves and provide themselves to spiderlings as food at the end of maternal care. By removing mothers from their offspring at 2 different times, the effects of maternal care on egg and spiderling survival rates were estimated separately. Mother attendance greatly improved survival and development of eggs as well as spiderlings. Detailed observations on the fate of immatures in breeding nests with and without their mothers showed lower hatching and spiderling emergence rates when mothers were removed. Furthermore, spiderlings that fed on their mother’s body showed accelerated growth and quickly molted into the 3rd instar with the delay of dispersal. This suggests that matriphagy, or eating the mother, enables spiderlings of this species to disperse at a later instar. Therefore, I conclude that the maternal care of this spider consists of guarding offspring, supporting offspring development and feeding spiderlings. References
Aviles, L. 1997 Causes and consequences of cooperation and permanent-sociality in spiders. In: Choe, J. C. & Crespi, B. J. (eds.),
Social Behavior in Insects and Arachnids. Cambridge Univ. Press, pp. 476–498.
Buskirk, R. E. 1981 Sociality in the arachnida. In: Hermann, H.R. (ed.),
Social Insects Vol. II. Academic Press, New York, pp. 282–367.
Clutton-Brock, T. H. 1991
The Evolution of Parental Care. Princeton University Press.
Eason, R. 1964 Maternal care as exhibited by wolf spiders (Lycosides).
Ark. Acad. Sci. Proc., 18: 13–19.
Evans, T. A., Wallis, E. J. & Elgar, M. A. 1995 Making a meal of mother.
, 376: 299.
Fink, L. S. 1986 Costs and benefits of maternal behaviour in the green lynx spider (Oxyopidae,
). Anim. Behav., 34: 1051–1060.
Humphreys, W. F. 1974 Behavioural thermoregulation in a wolf spider.
, 251: 502–503.
Kullmann, E. J. 1972 Evolution of social behavior in spiders (Araneae; Eresidae and Theridiidae).
Am. Zool. 12: 419–426.
Lubin, Y. D. 1974 Adaptive advantages and the evolution of colony formation in
Zool. J. Limn. Soc.
, 54: 321–339.
Mansour, F., Rosen, D. & Shoulv, A. 1980 Biology of the spider
, 25(3): 237–248.
Nakahira, K. 1966 Reproductive behaviors of Chiracanhium japonicum Bosenberg et Strand (Araneae, Clubionidae).
Atypus, 41/42: 15–23 (in Japanese).
Norgaard, E. 1956 Environment and behaviour of
, 7: 159–192.
Ori, M. 1975 Studies on the poisonous spider,
Chiracanthium japonicum Bosenberg et Strand, 1906, as a pest of medical importance. 2. Ecological studies on the spider, Chiracanthium japonicum, Bosenberg et Strand, 1906. Jap. J. Sanit. Zool. 27(2): 181–88 (in Japanese with English summary).
Peck, W. B. & Whitcomb, W. H. 1970 Studies on the biology of a spider,
Chiracanhium inclusum (Hentz). Bull. Ark. Exp. Stn., 753: 1–76.
Polis, G. A. 1981 The evolution and dynamics of intraspecific predation.
Annu. Rev. Ecol. Syst.
, 12: 225–251.
Randall, J. B. 1977 New observations of maternal care exhibited by the green lynx spider,
Peucetia viridans Henz (Araneida: Oxyopidae). Psyche, 83: 286–291.
Seibt, U. & Wickler, W. 1981 Gerontophagy versus Cannibalism in the social Spiders
, 35: 1903–1905.
Tallamy, D.W. & T. K. Wood 1986 Convergence patterns in subsocial insects.
Annu. Rev. Entmol.
, 31: 369–390.
Vollrath, F. 1987 Growth, foraging and reproductive success. In: Nentwig, W. (ed.),
Ecophysiology of Spiders. Springer, Heidelberg, pp. 357–370.
Wilson, E. O. 1975
Sociobiology. The new synthesis. Harvard Univ. Press.
Wolf, A. 1990 The silken nests of the clubionid spiders
Chiracanthium pennyi and Chiracanthium punctorium (Araneae, Clubionidae). Acta Zool. Fennica, 190: 397–404. Copyright information
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