CONSEQUÊNCIAS DO MANEJO FLORESTAL NO SISTEMA DE REPRODUÇÃO DE Tabebuia cassinoides (Lamarck) A. P. de Candolle
DOI:
https://doi.org/10.24278/2178-5031.2005172477Keywords:
caixeta, forest logging, tropical tree species, genetic diversity, inbreedingAbstract
Natural population of Tabebuia cassinoides (Lamarck) A. P. de Candolle have been explored from many decades, and actually there is few remainder populations. The aims of this work were to verify the consequences of forest logging on levels of genetic diversity and mating system of the T. cassinoides populations, in a not logging (JuréiaItatins Ecological Station) and a logging populations (Cindomel Farm, Iguape–SP). The observed levels of genetic diversity in not logging population ( Aˆ = 1.71; Ae ˆ = 1.29; Ho ˆ = 0.197; He ˆ = 0 .224) were, in general, higher than find out in logging population ( Aˆ = 1.71; Ae ˆ = 1.28; Ho ˆ = 0.227; He ˆ = 0.217), although the differences are not significant. In another hand, the estimate of multilocus outcrossing rate was higher in the logging ( tˆ m=0.996) than natural population ( tˆ m= 0.923). The estimates of the differences between multilocus and single-locus outcrossing rate revealed the mating among relatives in not logging ( tˆ s− tˆ m= 0.044) and logging populations ( tˆ s− tˆ m= 0.046). The estimates of paternity correlation revealed that part of the matings were biparentals in not logging ( rˆ p= 0.570) and logging populations ( rˆ p= 0.371) and part of progenies are full-sibs. These results suggesting that the forest logging change the mating system of this species, favoring outcrossing more diversified.
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ALFENAS, S. A. Eletroforese de isoenzimas e proteínas afins: fundamentos e aplicações em plantas e microorganismos. Viçosa: Universidade Federal de Viçosa - UFV, 1998. 574 p.
CABALLERO, A. Developments in the prediction of effective population size. Heredity, Lund, v. 73, p. 657-679, 1994.
CARVALHO, P. E. R. Espécies florestais brasileiras: recomendações silviculturais, potencialidades e uso de madeira. Colombo: EMBRAPA-CNPF; Brasília, DF: EMBRAPA-SPI, 1994. 640 p.
CAVALLARI-NETO, M. et al. Estrutura genética espacial em populações de Tabebuia cassinoides por locos isoenzimáticos. Rev. Inst. Flor., São Paulo, v. 16, n. 2, p. 153-164, 2004.
CLAYTON, J.; TRETIAK, D. Amine-citrate buffers for pH control in starch gel electrophoresis. Journal Fisheries Research Board Canadian, Ottawa, v. 29, p. 1169-1172, 1972.
COCKERHAM, C. C. Variance of gene frequencies. Evolution, Lawrence, n. 23, p.72-84, 1969.
DAYANANDAN, S. et al. Population structure delineated with microsatellite markers in fragmented populations of a tropical tree, Carapa guianensis (Meliaceae). Molecular Ecology, Edinburgh, v. 8, p. 1585-1592, 1999.
DEGEN, B.; GREGORIUS, H. R., SCHOLTZ, F. ECO-GENE: a model for simulation studies on the spatial and temporal dynamics of genetic structures of tree populations. Silvae Genetica, Frankfurt, v. 45, p. 323-329, 1996.
________.; SCHOLTZ, F. Ecological genetics in forest ecosystems under stress as analyzed by the simulation by the simulation model Eco-gene. Chemosphere, Berlin, v. 36, p. 819-824, 1998.
________.; ROUBIK, D.; LOVELESS, M. D. Impact of selective logging and forest fragmentation on the seed cohorts of an insect-pollinated tree: a simulation study. In: DEGEN, B.; LOVELESS, M. D.; KREMER, A. (Ed). Modeling and experimental research on genetic process in tropical and temperate forest. Belém: EMBRAPA Amazônia Oriental, 2002. p. 108-119.
DEGEN, B.; BANDOU, E.; CARON, H. Limited pollen dispersal and biparental inbreeding in Symphonia globulifera in French Guiana. Heredity, Lund, v. 93, p. 585-591, 2004.
GUSSON, E.; SEBBENN, A. M.; KAGEYAMA, P. Y. Sistema de reprodução em populações de Eschweilera ovata (Cambess) Miers. Revista Árvore, Viçosa, 2005. (submetido)
HAMILTON, M. B. Tropical tree gene flow and seed dispersal. Nature, London, v. 401, p. 129-30, 1999.
LEWIS, P. O.; ZAYKIN, D. GDA - Genetic Data Analysis: version 1.1 for Windows 95/NT. Disponível em: . Acesso em: 29 nov. 2002.
LORENZI, H. Árvores brasileiras: manual de identificação e cultivo de plantas arbóreas nativas do Brasil. Nova Odessa: Plantarum, 1998. 252 p.
MANTOVANI, W. Estrutura e dinâmica da floresta Atlântica na Juréia, Iguape. 1993. 126 f. Tese (Livre Docência em Ecologia), Instituto de Biociências, Universidade de São Paulo, São Paulo.
MORAES, M. L. T.; KAGEYAMA, P. Y.; SEBBENN, A. M. Correlated mating in dioecious tropical tree species, Myracrodruon urundeuva Fr. All. Forest Genetics, Zvolen, v. 11, n. 1, p. 53-59, 2004.
MURAWSKI, D. A. Reproductive biology and genetics of tropical trees from canopy perspective. In: LOWMAN, M. D.; NADKARNI, N. M. (Ed.). Forest canopies. New York: Academic Press, 1995. p. 457-493.
________.; GUNATILLEKE, I. A. U. N.; BAWA, K. S. The effects of selective logging on inbreeding in Shorea megistophylla (Dipterocarpaceae) from Siri Lanka. Conservation Biology, San Francisco, v. 8, p. 997-1002, 1994.
NEI, M. F-statistics and analysis of gene diversity in subdivided populations. Annals of Human Genetics, London, v. 41, p. 225-233, 1977.
OBAYASHI, K. et al. Genetic diversity and outcrossing rate between undisturbed and selective logged forest of Shorea curtissi using microsatellite DNA analysis. International Journal of Plant Science, v. 163, n. 1, p.151-158, 2002
RAJORA, O. P.; PLUHAR, S. A. Genetic diversity impacts of forest fire, forest harvesting, and alternative reforestation practices in black spruce (Picea mariana). Theoretical and Applied Genetics, Berlin, v. 106, p. 1203-1212, 2003.
RIBEIRO, R. A.; LOVATO, M. B. Mating system in a neotropical tree species, Senna multijuga (Fabaceae). Genetics and Molecular Biology, Ribeirão Preto, v. 27, p. 418-424, 2004.
RITLAND, K. Correlated matings in the partial selfer Mimulus guttatus. Evolution, Lawrence, v. 43, n. 4, p.848-859, 1989.
________. Multilocus mating system program MLTR. Version 1.1. Disponível em: . Acesso em: 18 dez. 1997.
________.; JAIN, S. A model for the estimation of outcrossing rate and gene frequencies using independent loci. Heredity, Lund, v.47, p. 35-52, 1981.
SEBBENN, A. M. Número de árvores matrizes e conceitos genéticos na coleta de sementes para reflorestamentos com espécies nativas. Rev. Inst. Flor., São Paulo, v. 14, n. 2, p. 115-132, 2002.
________. Número de populações para conservação genética in situ de espécies arbóreas. Rev. Inst. Flor., São Paulo, v. 15, n. 1, p. 45-51, 2003.
________. et al. Efeitos do manejo florestal sobre a estrutura genética de Caixeta - Tabebuia cassinoides, no Vale do Ribeira, SP. Scientia Forestalis, Piracicaba, v. 58. p. 127-143, 2000.
________. et al. Estrutura genética em populações de Tabebuia cassinoides: implicações para o manejo florestal e a conservação genética. Rev. Inst. Flor., São Paulo, v.13, n. 2, p.93-113, 2001.
________.; SEOANE, C. E. S. Herança e ligação em isoenzimas de equilíbrio de ligação em locos isoenzimáticos de Tabebuia cassinoides. Rev. Inst. Flor, São Paulo, v. 16, n. 2, p. 137-145, 2004.
SEOANE, C. E. C.; SEBBENN, A. M.; KAGEYAMA, P. Y. Sistema reprodutivo em populações de Esenbeckia leiocarpa. Rev. Inst. Flor., São Paulo, v. 13, n. 1, p 19-26, 2001.
SOUZA,L.M.I.; SEBBENN, A.M.; KAGEYAMA, P. Y. Sistema de reprodução em Chorisia speciosa. Rev. Bras. de Bot., São Paulo, v. 26, n. 113-121, 2003.
SUN, M.; RITLAND, K. Mating system of yellow starthisthe (Centaurea solstitialis), a successful colonizer in North America. Heredity, Lund, v. 80, p. 225-232, 1998.
WEIR, B. S. Genetic data analysis. II. Methods for discrete population genetic data. Suderland: Sinauer, 1996. 445 p.
WHITE, G. M.; BOSHIER, D. H.; POWELL, W. Increased pollen flow counteracts fragmentation in tropical dry Forest: an example from Swietenia humilis Zuccarini. Proc. Nat. Acad. Sci., Washington, D.C., v. 99, p. 2038-2042, 2002.
WORKMAN, P.; NISWANDER, J. L. Populations studies on southwestern Indian tribes. II. Local genetic differentiation in the Papago. American Journal Human Genetic, Chicago, v. 22, p. 24-29, 1970.
YOUNG, A.; BOYLE, T. T.; BROWN, T. The population genetic consequences of habitat fragmentation for plant. Tree, Victoria, v. 11, n. 10, p. 100-106, 1996.
YOUNG, A. G.; BOYLE, T. J. Forest fragmentation. In: YOUNG, A. G.; BOSHIER, D.; BOYLE, T. J. Forest conservation genetics. 2000. p. 123-133
