Summary
The pumpkinseed sunfish (Lepomis gibbosus Linnaeus; Centrarchidae) feeds extensively on molluscs, crushing them between its pharyngeal jaws. To address whether differences in mollusc availability might affect pumpkinseed diet and jaw morphology, we collected pumpkinseed from six Wisconsin lakes that varied in mollusc abundance and diversity. The percentage of molluscs in the diet increased directly with mollusc abundance. Moreover, there was a positive correlation between the mass of the pumpkinseed's main crushing muscle, the levator posterior, and the percentage of molluscs in the diet. These data support our previous work in two Michigan lakes showing that pumpkinseed pharyngeal jaws were more robust, and mollusc crushing performance improved, in a lake with higher mollusc densities. The combined Wisconsin and Michigan data exhibit a single relationship between levator posterior mass and percentage of molluscs eaten. Taken together, these studies demonstrate strong, functional relationships between prey availability, diet, morphology, and feeding performance, and suggest how morphology and feeding efficiency may evolve in response to variation in resource density.
Similar content being viewed by others
References
Andrews LM, Threinen CW (1966) Surface waters of Oneida county. Wisconsin Conservation Dept, Madison
Black JJ, Andrews LM, Threinen CW (1963) Surface waters of Vilas county. Wisconsin Conservation Dept, Madison
Crowder LB (1984) Character displacement and habitat shift in a native cisco in southern lake Michigan: evidence for competition. Copeia 1984(4):878–883
Ehlinger TJ, Wilson DS (1988) Complex foraging polymorphism in the bluegill sunfish. Proc Natl Acad Sci USA 85:1878–1882
Grant PR (1987) Ecology and evolution of Darwin's finches. Princeton Univ. Press, Princeton
Greenwood PH (1965) Environmental effects on the pharyngeal mill of a cichlid fish, Astatoreochromis alluaudi and their taxonomic implications. Proc Linn Soc Lond 176:1–10
Hindar K, Jonsson B (1982) Habitat and food segregation of dwarf and normal Arctic charr (Salvelinus alpinus) from Vangsvatnet Lake, western Norway. Can J Fish Aquat Sci 39:1030–1045
Hoogerhoud RJC (1986) Ecological morphology of some cichlid fishes. Ph.D. thesis, Leiden, The Netherlands
Hoogerhoud RJC (1989) Prey processing and predator morphology in molluscivorous cichlid fishes. Fortschritte der Zoologie. Prog Zool 35:19–21
Kornfield IL, Smith DC, Gagnon PS, Taylor JN (1982) The cichlid fish of Cuatro Cienegas Mexico: direct evidence of conspecificity among distinct trophic morphs. Evolution 36:658–664
Lauder GV (1983a) Functional and morphological bases of trophic specialization in sunfishes (Teleostei, Centrarchidae). J Morph 178:1–21
Lauder GV (1983b) Neuromuscular patterns and the origin of trophic specialization in fishes. Science 219:1235–1237
Lavin PA, McPhail JD (1985) The evolution of freshwater diversity in the threespine stickleback (Gasterosteus aculeatus). Can J Zool 63:2632–2638
Lavin PA, McPhail JD (1986) Adaptive divergence of trophic phenotype among freshwater populations of the threespine stickleback (Gasterosteus aculeatus). Can J Fish Aquat Sci 43:2455–2463
Leim KF, Kaufman LS (1984) Intraspecific macroevolution: functional biology of the polymorphic cichlid species Cichlasoma minckley. In: Echelle AA, Kornfield I (eds) Evolution of fish species flocks. Univ. of Maine at Orono Press, Orono, pp 203–215
Lindsey CC (1981) Stocks are chameleons: plasticity in gill rakes of coregonid fishes. Can J Fish Aquat Sci 38:1497–1506
Lowe-McConnell RH (1987) Ecological studies in tropical fish communities. Cambridge Univ. Press, Cambridge
Magnan P (1988) Interactions between brook char, Salvelinus fontinalis, and nonsalmonid species: ecological shift, morphological shift, and their impact on zooplankton communities. Can J Fish Aquat Sci 45:999–1009
Merritt RW, Cummins KW (1984) An introduction to the aquatic insects of North America. Second edition. Kendal/Hunt, Dubuque, IA
Meyer A (1987) Phenotypic plasticity and heterochrony in Cichlasoma managuense (Pisces, Cichlidae) and their implications for selection in cichlid fishes. Evolution 41:1357–1369
Meyer A (1989) Cost of morphological specialization: feeding performance of the two morphs in the trophically polymorphic cichlid fish, Cichlasoma citrinellum. Oecologia 80:431–436
Meyer A (1990) Ecological and evolutionary aspects of the trophic polymorphism in Cichlasoma citrinellum (Pisces, Cichlidae). Biol J Linn Soc 39:279–299
Mittelbach GG (1981) Foraging efficiency and body size: a study of optimal diet and habitat use by bluegills. Ecology 62:1370–1386
Mittelbach GG (1984) Predation and resource partitioning in two sunfishes (Centrarchidae). Ecology 65:449–513
Nordeng H (1983) Solution of the “char problem” based on Arctic Char (Salvelinus alpinus) in Norway. Can J Fish Aquat Sci 40:1372–1387
Osenberg CW, Mittelbach GG (1989) Effects of body size on the predator-prey interaction between pumpkinseed sunfish and gastropods. Ecol Monogr 59:405–432
Osenberg CW, Mittelbach GG, Wainwright PC (1992) Two-stage life histories in fish: the interaction between juvenile competition and adult performance. Ecology 73: (in press)
Sadzikowski MR, Wallace DC (1976) A comparison of the food habits of size classes of three sunfish (Lepomis macrochirus Rafinesque. L. gibbosus (Linnaeus) and L. cyanellus Rafinesque). Am Midl Nat 95:220–225
Sage RD, Selander RK (1975) Trophic radiation through polymorphism in cichlid fishes. Proc Nat Acad Sci USA 72:4669–4673
Schoener TW (1974) Resource partitioning in ecological communities. Science 185:27–39
Schutz DC, Northcote TG (1972) An experimental study of feeding behavior and interaction of coastal cutthroat trout (Salmo clarki clarki) and Dolly Varden (Salvelinus malma). J Fish Res Bd Can 29:555–565
Skulason S, Noakes DLG, Snorrason SS (1989) Ontogeny of trophic morphology in four sympatric morphs of arctic charr Salvelinus alpinus in Thingrallauatn, Iceland. Biol J Linn Soc 38:281–301
Trautman MB (1981) The fishes of Ohio. The Ohio State University Press, Columbus
Vrijenhoek RC, Marteinsdottir G, Schenck R (1987) Genotypic and phenotypic aspects of niche diversification in fishes. In: Matthews WJ, Heins DC (eds) Community and evolutionary ecology of North American stream fishes. Univ Oklahoma Press, Norman, pp 245–250
Wainwright PC (1987) Biomechanical limits to ecological performance: mollusc crushing by the Caribbean hogfish, Lachnolaimus maximus (Labridae). J Zool Lond 213:283–297
Wainwright PC (1988) Morphology and ecology: the functional basis of feeding constraints in Caribbean labrid fishes. Ecology 69:635–645
Wainwright PC, Lauder GV (1991) The evolution of feeding biology in sunfishes (Centrarchidae). In: Mayden RL (ed) Systematics, historical ecology, and North American freshwater fishes. Stanford Press, Stanford
Wainwright PC, Osenberg CW, Mittelbach GG (1991) Trophic polymorphism in the pumpkinseed sunfish (Lepomis gibbosus Linnaeus): effects of environment on ontogeny. Func Ecol 5:40–55
Werner EE (1984) The mechanisms of species interactions and community organization in fish. In: Strong DR, Simberloff D, Abele LG, Thistle AB (eds) Ecological communities: conceptual issues and the evidence. Princeton Univ. Press, Princeton
Werner EE, Hall DJ (1977) Niche shifts in sunfishes: experimental evidence and significance. Science 191:404–406
Werner EE, Hall DJ (1977) Competition and habitat shift in two sunfishes (Centrarchidae). Ecology 58:869–876
Werner EE, Hall DJ (1979) Foraging efficiency and habitat switching in competing sunfishes. Ecology 60:256–264
Wetzel RG, Likens GE (1979) Limnological analysis. W B Saunders Co, Philadelphia
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Mittelbach, G.G., Osenberg, C.W. & Wainwright, P.C. Variation in resource abundance affects diet and feeding morphology in the pumpkinseed sunfish (Lepomis gibbosus). Oecologia 90, 8–13 (1992). https://doi.org/10.1007/BF00317802
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF00317802