Gone with the wind: Negative genetic and progeny fitness consequences of habitat fragmentation in the wind pollinated dioecious tree Brosimum alicastrum
Por:
de Jesus Aguilar-Aguilar M., Cristobal-Perez, E. Jacob, Lobo, Jorge, Fuchs, Eric J., Oyama, Ken, Marten-Rodriguez, Silvana, Herrerias-Diego, Yvonne, Quesada, Mauricio
Publicada:
1 ene 2023
Ahead of Print:
1 abr 2023
Resumen:
Premise: Habitat fragmentation negatively affects population size and mating patterns that directly affect progeny fitness and genetic diversity; however, little is known about the effects of habitat fragmentation on dioecious, wind pollinated trees. We assessed the effects of habitat fragmentation on population sex ratios, genetic diversity, gene flow, mating patterns, and early progeny vigor in the tropical dioecious tree, Brosimum alicastrum. Methods: We conducted our study in three continuous and three fragmented forest sites in a Mexican tropical dry forest. We used eight microsatellite loci to characterize the genetic diversity, gene flow via pollen distances, and mean relatedness of progeny. We compared early progeny vigor parameters of seedlings growing under greenhouse conditions. Results: Sex ratios did not deviate from 1:1 between habitat conditions except for one population in a fragmented habitat, which was female biased. The genetic diversity of adult trees and their offspring was similar in both habitat conditions. Pollen gene flow distances were similar across habitat types; however, paternity correlations were greater in fragmented than in continuous habitats. Germination rates did not differ between habitat conditions; however, progeny from fragmented habitats produced fewer leaves and had a lower foliar area, total height, and total dry biomass than progeny from continuous habitats. Conclusions: Changes in mating patterns because of habitat fragmentation have negative effects on early progeny vigor. We conclude that negative habitat fragmentation effects on mating patterns and early progeny vigor may be a serious threat to the long-term persistence of tropical dioecious trees. © 2023 The Authors. American Journal of Botany published by Wiley Periodicals LLC on behalf of Botanical Society of America.
Filiaciones:
de Jesus Aguilar-Aguilar M.:
Instituto de Investigaciones en Ecosistemas y Sustentabilidad, Universidad Nacional Autónoma de México, Michoacán, Morelia, Mexico
Laboratorio Nacional de Análisis y Síntesis Ecológica, Escuela Nacional de Estudios Superiores Unidad Morelia, Universidad Nacional Autónoma de México, Michoacán, Morelia, Mexico
Laboratorio Binacional de Análisis y Síntesis Ecológica, UNAM-UCR, México, Costa Rica
Cristobal-Perez, E. Jacob:
Laboratorio Nacional de Análisis y Síntesis Ecológica, Escuela Nacional de Estudios Superiores Unidad Morelia, Universidad Nacional Autónoma de México, Michoacán, Morelia, Mexico
Laboratorio Binacional de Análisis y Síntesis Ecológica, UNAM-UCR, México, Costa Rica
Univ Nacl Autonoma Mexico, Escuela Nacl Estudios Super, Lab Nacl Anal & Sintesis Ecol, Unidad Morelia, Morelia, Michoacan, Mexico
UNAM UCR, Lab Binacl Anal & Sintesis Ecol, Mexico, Costa Rica
Lobo, Jorge:
Laboratorio Nacional de Análisis y Síntesis Ecológica, Escuela Nacional de Estudios Superiores Unidad Morelia, Universidad Nacional Autónoma de México, Michoacán, Morelia, Mexico
Laboratorio Binacional de Análisis y Síntesis Ecológica, UNAM-UCR, México, Costa Rica
Escuela de Biología, Universidad de Costa Rica, San José, 11501-2060, Costa Rica
Univ Nacl Autonoma Mexico, Escuela Nacl Estudios Super, Lab Nacl Anal & Sintesis Ecol, Unidad Morelia, Morelia, Michoacan, Mexico
UNAM UCR, Lab Binacl Anal & Sintesis Ecol, Mexico, Costa Rica
Univ Costa Rica, Escuela Biol, San Jose 115012060, Costa Rica
Fuchs, Eric J.:
Laboratorio Nacional de Análisis y Síntesis Ecológica, Escuela Nacional de Estudios Superiores Unidad Morelia, Universidad Nacional Autónoma de México, Michoacán, Morelia, Mexico
Laboratorio Binacional de Análisis y Síntesis Ecológica, UNAM-UCR, México, Costa Rica
Escuela de Biología, Universidad de Costa Rica, San José, 11501-2060, Costa Rica
Univ Nacl Autonoma Mexico, Escuela Nacl Estudios Super, Lab Nacl Anal & Sintesis Ecol, Unidad Morelia, Morelia, Michoacan, Mexico
UNAM UCR, Lab Binacl Anal & Sintesis Ecol, Mexico, Costa Rica
Univ Costa Rica, Escuela Biol, San Jose 115012060, Costa Rica
Oyama, Ken:
Laboratorio Nacional de Análisis y Síntesis Ecológica, Escuela Nacional de Estudios Superiores Unidad Morelia, Universidad Nacional Autónoma de México, Michoacán, Morelia, Mexico
Univ Nacl Autonoma Mexico, Escuela Nacl Estudios Super, Lab Nacl Anal & Sintesis Ecol, Unidad Morelia, Morelia, Michoacan, Mexico
Marten-Rodriguez, Silvana:
Laboratorio Nacional de Análisis y Síntesis Ecológica, Escuela Nacional de Estudios Superiores Unidad Morelia, Universidad Nacional Autónoma de México, Michoacán, Morelia, Mexico
Laboratorio Binacional de Análisis y Síntesis Ecológica, UNAM-UCR, México, Costa Rica
Univ Nacl Autonoma Mexico, Escuela Nacl Estudios Super, Lab Nacl Anal & Sintesis Ecol, Unidad Morelia, Morelia, Michoacan, Mexico
UNAM UCR, Lab Binacl Anal & Sintesis Ecol, Mexico, Costa Rica
Herrerias-Diego, Yvonne:
Laboratorio Nacional de Análisis y Síntesis Ecológica, Escuela Nacional de Estudios Superiores Unidad Morelia, Universidad Nacional Autónoma de México, Michoacán, Morelia, Mexico
Facultad de Biología, Universidad Michoacana de San Nicolás de Hidalgo, Michoacán, Morelia, Mexico
Univ Nacl Autonoma Mexico, Escuela Nacl Estudios Super, Lab Nacl Anal & Sintesis Ecol, Unidad Morelia, Morelia, Michoacan, Mexico
Univ Michoacana, Fac Biol, Morelia, Michoacan, Mexico
Quesada, Mauricio:
Instituto de Investigaciones en Ecosistemas y Sustentabilidad, Universidad Nacional Autónoma de México, Michoacán, Morelia, Mexico
Laboratorio Nacional de Análisis y Síntesis Ecológica, Escuela Nacional de Estudios Superiores Unidad Morelia, Universidad Nacional Autónoma de México, Michoacán, Morelia, Mexico
Laboratorio Binacional de Análisis y Síntesis Ecológica, UNAM-UCR, México, Costa Rica
Univ Nacl Autonoma Mexico, Inst Invest Ecosistemas & Sustentabil, Morelia, Michoacan, Mexico
Univ Nacl Autonoma Mexico, Escuela Nacl Estudios Super, Lab Nacl Anal & Sintesis Ecol, Unidad Morelia, Morelia, Michoacan, Mexico
UNAM UCR, Lab Binacl Anal & Sintesis Ecol, Mexico, Costa Rica
hybrid, All Open Access; Hybrid Gold
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