Variações nas medidas morfológicas em três tipos de populações de Musca Domestica L.
Palavras-chave:
Linhagens, ambiente, competição, mosca domestica, teoria selecionista, teoria neutralistaResumo
Investigation of 18 morphometric characters in Musca domestica strains showed that natural populations presented the smallest measurements while descendant groupings, assembled ata density of 400 eggs, showed the largest measurements. The groupings which started with 800 eggs presented many characteristics similar to those of the natural populations. This suggests that competition among larvae is an important selective aspect which may be responsible for the similarities presented by strains under natural conditions. Ali morphometric characters analyzed presented variations among the different types ofpopulations and no character wasfound to be neutral.
Downloads
Referências
ALVES, S.M. 1997. Influência das variações morfométricas no desempenho de populações de Musca domesticaL. (Diptera: Muscidae). Jaboticabal, 140p. Mater 's Dissertation. Faculdade de Ciências Agrárias e Veterinárias, UNESP.
ANDERSON, W.W., DOBSHANSKY, T. & PAVLOVSKY, O. 1972. A natural population of Drosophila tranferred to a laboratory environment. Heredity, v. 28, p. 101-7.
ARTHUR, W. 1984. Mechanisms of morphological evolution. New York: John Wiley & Sons. 275 p.
BÉLO, M. & BIANCHINI, E. 1995. Diferenças morfométricas em populações de Musca domestica (L.). Natura/ia, v. 20, p. 45-8.
BLACK IV, W.C. & KRAFSUR, E.S. 1986. Geographic variation in housefly size: adaptation or crowding? Evolution, v. 40, p. 204-6.
BRANCALIÃO, E. M. & BÉLO, M. 1997. Efeitos da variabilidade genética e da densidade larval emMusca domestica L. Natura/ia, v. 22, p. 151-61.
BRYANT, E.H. 1977. Morphometric adaptation of the housefly Musca domestica (L.) in the United States. Evolution, v. 31, p. 580-96.
BRYANT, E.H. & MEFFERT, L.M. 1990. Multivariate phenotypic differentiation among bottleneck lines of the housefly. Evolution, v. 44, p. 660-668.
BRYANTE,E.H.&MEFFERT,L.M.1995.Ananalysisof selectional response in relation to a population bottleneck. Evolution, v.49, p. 626-634.
BRYANT, E.H. & TURNER, C.R. 1972. Rapid evolution ofcompetitiveabilityinlarvaemixturesofthehousefly. Evolution, v. 26, p. 161-70.
BRYANT, E.H. & TURNER, C.R. 1978. Comparative morphometric adaptation of the housefly andfacefly in United States. Evolution, v. 32, p. 759-70.
BRYANT, E.H., MACCOMMAS, S. A. & COMBS, M. 1986. The effect of an experimental bottleneck upon quantitative genetic variations inthehousefly.Genetics, V. 114, p. 1191-211.
DARWIN, C.A origem das espécies. 5. Ed. Translaction to Portuguese by Eduardo Fonseca. Hemus Editora Ltda, w. d. 471 p.
FISHER, R. A. 1958. The genetical theory of natural selection. New York: Dover Plublications. 291p.
MAYR, E. 1970. Populations, species and evolution. Cambridge: Harvard University Press.
STALKER, H.D. & CARSON, H.L. 1949. Seasonal variation in the morphology of Drosophila robusta Sturtevant. Evolution, v. 3, p. 330-43.
TANTAWY, A.O. 1964. Studiesonnaturalpopulationsof Drosophila. III. Morphological and genetic differences of wing lenght in Drosophila melanogaster and D. simulans. Evolution, v. 18, p. 560-70.
TODA, M.J.1973. Seasonal activity and microdistribution of Drosophilaflies in Misumai in Sapporo.J. Fac. Sei. Hokkaido Univ. Zool., v. 18, p. 532-50.
