Determinants of feeding territory size in the corallivorous butterflyfish, Chaetodon multicinctus

Abstract Both sexes of the monogamous coral-feeding butterflyfish, Chaetodon multicinctus , forage as energy maximizers, are constrained by the time available for feeding, and vigorously defend their feeding territories from intrusions by conspecific competitors. Territory area was positively correlated with coral abundance when data were pooled from coral-poor and coral-rich habitats. In contrast, male lenght and total food were correlated with territory area within the coral-rich habitat. When food supply was increased, fish attempted to defend all food within original borders but were limited by aggressive interactions with conspecifics attracted to supplemental food. When coral abundance was reduced, residents expanded their territories. In comparison, territories were adjusted as an inverse function of competitor abundance and related costs of defence. Although these experiments support competitor-mediated models of territory size, food resources are also important in that they set a lower limit for minimum territory area and, when possible, are defended in surplus by this species.

[1]  James H. Brown,et al.  Influence of Economics, Interspecific Competition, and Sexual Dimorphism on Territoriality of Migrant Rufous Hummingbirds , 1978 .

[2]  E S Reese,et al.  A comparative field study of the social behavior and related ecology of reef fishes of the family Chaetodontidae1)2). , 2010, Zeitschrift fur Tierpsychologie.

[3]  R. R. Warner,et al.  Population Density and the Economics of Territorial Defense in a Coral Reef Fish , 1980 .

[4]  M. Hixon.  An Experimental Analysis of Territoriality in the California Reef Fish Embiotoca jacksoni (Embiotocidae) , 1981 .

[5]  T. Tricas.  Life history, foraging ecology, and territorial behavior of the Hawaiian butterflyfish, Chaetodon multicinctus , 1986 .

[6]  C. L. Gass,et al.  Regulation of food supply by feeding territoriality in the rufous hummingbird , 1976 .

[7]  R. Larson.  Influence of territoriality on adult density in two rockfishes of the genus Sebastes , 1980 .

[8]  J. Myers,et al.  Territory size in wintering Sanderlings: the effects of prey abundance and intruder density , 1979 .

[9]  J. R. Nursall.  The activity budget and use of territory by a tropical blenniid fish , 1981 .

[10]  P. Lobel.  Diel, Lunar, and Seasonal Periodicity in the Reproductive Behavior of the Pomacanthid Fish, Centropyge potteri, and Some Other Reef Fishes in Hawaii , 1978 .

[11]  C. Simon.  The Influence of Food Abundance on Territory Size in the Iguanid Lizard Sceloporus jarrovi , 1975 .

[12]  M. Hirshfield.  An Experimental Analysis of Reproductive Effort and Cost in the Japanese Medaka, Oryzias Latipes , 1980 .

[13]  T. Schoener.  Simple Models of Optimal Feeding-Territory Size: A Reconciliation , 1983, The American Naturalist.

[14]  Sexual differentiation, gonad development, and spawning seasonality of the Hawaiian butterflyfish,Chaetodon multicinctus , 1989 .

[15]  J. Stimson.  The Role of the Territory in the Ecology of the Intertidal Limpet Lottia Gigantea (Gray) , 1973 .

[16]  S. L. Lima.  Territoriality in Variable Environments: A Simple Model , 1984, The American Naturalist.

[17]  M. Hixon,et al.  Territory Area, Flower Density, and Time Budgeting in Hummingbirds: An Experimental and Theoretical Analysis , 1983, The American Naturalist.

[18]  T. Tricas.  Prey selection by coral.feeding butterflyfishes: strategies to maximize the profit , 1989 .

[19]  D. R. Robertson,et al.  SCHOOLING AS A MECHANISM FOR CIRCUMVENTING THE TERRITORIALITY OF COMPETITORS , 1976 .

[20]  G. Belovsky.  Food Plant Selection by a Generalist Herbivore: The Moose , 1981 .

[21]  J. Ebersole.  Food Density and Territory Size: An Alternative Model and a Test on the Reef Fish Eupomacentrus leucostictus , 1980, The American Naturalist.

[22]  Thomas F. Hourigan,et al.  Coral Reef Fishes as Indicators of Environmental Stress in Coral Reefs , 1988 .

[23]  S. G. Hoffman.  Sex‐Related Foraging Behavior in Sequentially Hermaphroditic Hogfishes (Bodianus Spp.) , 1983 .

[24]  R. Ross.  Catheterization: a Non-harmful Method of Sex Identification for Sexually Monomorphic Fishes , 1984 .

[25]  E S Hobson,et al.  Feeding relationships of teleostean fishes on coral reefs in Kona, Hawaii , 1974 .

[26]  M. Hixon.  Territory Area as a Determinant of Mating Systems , 1987 .

[27]  T. Northcote,et al.  Effects of Prey Abundance on Density and Territorial Behavior of Young Rainbow Trout (Salmo gairdneri) in Laboratory Stream Channels , 1974 .

[28]  Michael Sutton,et al.  Patterns of spacing in a coral reef fish in two habitats on the Great Barrier Reef , 1985, Animal Behaviour.

[29]  M. Hixon.  Food Production and Competitor Density as the Determinants of Feeding Territory Size , 1980, The American Naturalist.

[30]  J. Krebs.  Territory and breeding density in the Great Tit , 1971 .

[31]  F. Gill,et al.  Economics of Feeding Territoriality in the Golden-Winged Sunbird , 1975 .

[32]  R. S. Dunn,et al.  Ration, Growth, and Measures of Somatic and Organ Condition in Relation to Meal Frequency in Winter Flounder, Pseudopleuronectes americanus, with Hypotheses Regarding Population Homeostasis , 1976 .

[33]  E. Wilson.  Sociobiology: The New Synthesis , 1976 .