Synopsis
Reproductive behavior of the Japanese filefish, Rudarius ercodes, was studied at the rocky reef off Koinoura, northern Kyushu, Japan, between June and October 1989. Aggressive display was observed between males, but they were not territorial. Males had four types of courtship behavior: vibrating, tail bending, leaning and nuzzle. Spawning occurred early in the morning. A female and 1–3 male(s) mated together on brown algae. Each female spawned repeatedly with an interval of 6–12 days. Females cared for eggs and embryos from just after spawning until hatching, 2–4 days. Female egg care consisted of tending and guarding. Females tended eggs by blowing water on them and by fanning them with their pectoral fins. Females guarded eggs by driving away fish passing nearby. In some cases, males also guarded eggs by staying near the eggs and driving away conspecific males. Whether a male cares for eggs with a female seems to be affected by the form of mating (pair mating or single female-multiple male mating), and the probability of further reproduction after spawning. Dominant males showed a tendency to pair with a specific female intermittently over a two-month period. Mating, however, did not always occur between members of such pairs, and mates appeared to be inter-changeable with a promiscuous mating system.
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References cited
Balon, E.K. 1975. Reproductive guilds of fishes: a proposal and definition. J. Fish. Res. Board Can. 32: 821–864.
Balon, E.K. 1981. Additions and amendments to the classification of reproductive styles in fishes. Env. Biol. Fish. 6: 377–389.
Balon, E.K. 1984. Patterns in the evolution of reproductive styles in fishes. pp. 35–53. In: C.W. Potts & R.J. Wootton(ed.) Fish Reproduction: Strategies and Tactics, Academic Press, London.
Balon, E.K. 1985. Early life histories of fishes: new developmental, ecological and evolutionary perspectives. Developments in Env. Biol. Fish. 5, Dr W. Junk Publishers, Dordrecht. 280 pp.
Barlow, G.W. 1987. Spawning, eggs and larvae of the longnose filefish Oxymonacanthus longirostris, a monogamous coralivore. Env. Biol. Fish. 20: 183–194.
Blumer, L.S. 1979. Male parental care in the bony fishes. Q. Rev. Biol. 54: 149–161.
Blumer, L.S. 1982. A bibliography and categorization of bony fishes exhibiting parental care. Zool. J. Linnean Soc. 75: 1–22.
Blumer, L.S. 1985. Reproductive natural history of the brown bullhead Ictalurus nebulosus in Michigan. Amer. Midl. Nat. 114: 231–236.
Blumer, L.S. 1986. Parental care sex differences in the brown bullhead, Ictalurus nebulosus (Pisces, Ictaluridae). Behav. Ecol. Sociobiol. 19: 97–104.
Choat, J.H. & D.R. Robertson. 1975. Protogynous hermaphroditism in fishes of the family Scaridae. pp. 263–283. In: R. Reinboth(ed.) Intersexuality in the Animal Kingdom, Springer Verlag, New York.
Clark, E. 1950. Notes on the behavior and morphology of some West Indian plectognath fishes. Zoologica 35: 159–168.
Clutton-Brock, T.H. 1991. The evolution of parental care. Princeton University Press, Princeton. 352 pp.
Fricke, H.W. 1974. Öko-Etholgie des monagemen Anemonenfisches Amphiprion bicinctus. Z. Tierpsychol. 36: 429–513.
Fricke, H.W. 1977. Community structure, social organization and ecological requirements of coral reef fish (Pomacentridae). Helgölander wiss. Meeresunters. 30: 412–426.
Fricke, H.W. 1980. Mating systems, maternal and biparental care in triggerfish (Balistidae). Z. Tierpsychol. 53: 105–122.
Gross, M.R. & R.C. Sargent. 1985. The evolution of male and female parental care in fishes. Amer. Zool. 25: 807–822.
Hourigan, T.F. 1989. Environmental determinants of butterfly fish social systems. Env. Biol. Fish. 25: 61–78.
Kawabe, R. 1984. Spawning behavior of the bridled triggerfish, Sufflamen fraenatus, in the aquarium. Japan. J. Ichthyol. 31: 193–197. (in Japanese)
Kawase, H. & A. Nakazono. 1994. Embryonic and pre-larval development and otolith increments in two filefishes, Rudarius ercodes and Paramonacanthus japonicus (Monacanthidae). Japan. J. Ichthyol. 41: 57–63.
Kawase, H. & A. Nakazono. 1994. Reproductive behavior of the honeycomb leatherjacket, Cantherhines pardalis (Monacanthidae), at Kashiwajima, Japan. Japan. J. Ichthyol. 41: 80–83.
Kawase, H. & A. Nakazono. 1994. Reproductive behavior of the flagtail triggerfish, Sufflamen chrysopterus. Proc. 7th Int. Coral Reef Symp. Guam: 915–917.
Kuronuma, K. 1941. On the secondary sex character of a Japanese file fish, Rudarius ercodes with some biological significance found in the species. J. Fisheries 36: 44–50. (in Japanese)
Kuwamura, T. 1985. Social and reproductive behavior of three mouthbrooding cardinalfishes, Apogon doederleini, A. niger and A. notatus. Env. Biol. Fish. 13: 17–24.
Kuwamura, T. 1987. Evolution of parental care in fishes with reference to determinants of the care-taker's sex. Japan. J. Ecol. 37: 133–148. (in Japanese)
Lobel, P.S. & R.E. Johannes. 1980. Nesting, eggs, and larvae of triggerfishes (Balistidae). Env. Biol. Fish. 5: 251–252.
Matsuura, K. 1979. Phylogeny of the superfamily Balistoidea (Pisces: Tetraodontiformes). Mem. Fac. Fish. Hokkaido Univ. 26: 49–169.
Matsuura, K. 1984. Tetraodontiformes. pp. 357–366, pl. 321–334, 370. In: H. Masuda, K. Amaoka, C. Araga, T. Uyeno & T. Yoshino (ed.) The Fishes of the Japanese Archipelago, Tokai University Press, Tokyo.
Nakamura, N. 1942. A note on the breeding habits of a small filefish, Rudarius ercodes Jordan et Fowler. Botany and Zoology 16: 8–10. (in Japanese)
Nakazono, A. & H. Kawase. 1993. Spawning and biparental eggcare in a temperate filefish, Paramonacanthus japonicus (Monacanthidae). Env. Biol. Fish. 37: 245–256.
Perrone, M. Jr. & T.M. Zaret. 1979. Parental care patterns of fishes. Amer. Natur. 113: 351–361.
Qasim, S.Z. 1956. Time and duration of the spawning season in some marine teleosts in relation to their distribution. J. Cons. Perm. Int. Explor. Mer. 21: 144–155.
Thresher, R.E. & A.M. Gronell. 1978. Subcutaneous tagging of small reef fishes. Copeia 1978: 342–353.
Warner, R.R. & D.R. Robertson. 1978. Sexual patterns in the labroid fishes of the Western Caribbean, I: The wrasses (Labridae). Smithsonian Cont. Zool. 254: 1–27.
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Kawase, H., Nakazono, A. Predominant maternal egg care and promiscuous mating system in the Japanese filefish, Rudarius ercodes (Monacanthidae). Environ Biol Fish 43, 241–254 (1995). https://doi.org/10.1007/BF00005856
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DOI: https://doi.org/10.1007/BF00005856