Publicaciones

@article{Maldonado-Lopez2019,

title = {Leaf herbivory and fluctuating asymmetry as indicators of mangrove stress},

author = {Yurixhi Maldonado-López and Marcela Sofía Vaca-Sánchez and Armando Canché-Delgado and Silvia Ecaterina García-Jaín and Antonio González-Rodríguez and Tatiana Cornelissen and Pablo Cuevas-Reyes},

doi = {10.1007/s11273-019-09678-z},

issn = {15729834},

year  = {2019},

date = {2019-01-01},

journal = {Wetlands Ecology and Management},

volume = {0123456789},

pages = {571-580},

abstract = {Fluctuating asymmetry (FA), a widely used measure of developmental instability in plants and animals, which describes random differences in size and/or shape between the two sides of a bilateral character. We used FA as a tool to detect stress in three mangrove species (Avicennia germinans, Laguncularia racemosa, Rhizophora mangle), growing in both disturbed and conserved habitats in the Atlantic coast of Mexico. In this region, disturbed habitats are the result of deforestation, livestock, tourism and agriculture activities. Twenty plants of each species were sampled in each of four sites (two disturbed and two conserved) and levels of FA, proportion of individuals with herbivory, proportion of leaves with damage, and leaf area removed by herbivores were evaluated. In disturbed habitats, regardless of plant species, more plants were attacked by insects, more leaves were damaged, and more leaf area was removed by herbivores, indicating higher overall damage to plants. We detected that FA levels varied significantly amongst mangrove species, they were higher in disturbed compared to conserved habitats, indicating the importance of FA as a monitoring tool of mangrove stress. A positive relationship between FA and herbivory levels also indicates that herbivores might be a source of stress.},

keywords = {Fluctuating asymmetry, Habitat disturbance, Herbivory, Mangroves},

pubstate = {published},

tppubtype = {article}

}

@article{nokey,

title = {Patterns of herbivory and leaf morphology in two Mexican hybrid oak complexes: Importance of fluctuating asymmetry as indicator of environmental stress in hybrid plants},

author = {Pablo Cuevas-Reyes and Armando Canché-Delgado and Yurixhi Maldonado-López and G. Wilson Fernandes and Ken Oyama and Antonio González-Rodríguez},

doi = {10.1016/j.ecolind.2018.03.009},

issn = {1470160X},

year  = {2018},

date = {2018-01-01},

journal = {Ecological Indicators},

volume = {90},

pages = {164-170},

publisher = {Elsevier B.V.},

abstract = {Interspecific hybridization is a prevalent process in plant species that may have different ecological and evolutionary consequences. Interactions with herbivorous insects may be altered because of hybridization among host plants. These changes result from the morphological, physiological and chemical traits expressed in hybrid individuals. Therefore, it is of interest to document the changes in traits such as leaf morphology and their consequences on patterns of herbivory by insects in hybrid complexes of plants. Another useful indicator that may serve to evaluate developmental instability resulting from genetic or environmental stress in hybrid plants is fluctuating asymmetry. In this study, we used two previously genetically characterized complexes of hybridizing Mexican oaks as models to compare and understand the relationships between leaf morphology, fluctuating asymmetry and herbivory levels in parental and hybrid individuals. Results indicated that in the Quercus affinis × Q. laurina complex, hybrid individuals show a distinct morphology in relation to the parental species, while in the Q. magnoliifolia × Q. resinosa complex, hybrids were similar to Q. resinosa. In both hybrid complexes, our results show that hybrid individuals have higher levels of fluctuating asymmetry and herbivory levels, which may reflect higher levels of genetic or environmental stress in comparison to the parental species. These results might help explain why oak species usually remain distinct despite the high frequency of hybridization characteristic of the genus.},

keywords = {Environmental stress, Fluctuating asymmetry, Herbivory, Hybrid complexes, Leaf morphology, Quercus},

pubstate = {published},

tppubtype = {article}

}

@article{Cuevas-Reyes2013,

title = {Patterns of herbivory and fluctuating asymmetry in Solanum lycocarpum St. Hill (Solanaceae) along an urban gradient in Brazil},

author = {Pablo Cuevas-Reyes and Livia Gilberti and Antonio González-Rodríguez and G. Wilson Fernandes},

url = {http://dx.doi.org/10.1016/j.ecolind.2012.08.011},

doi = {10.1016/j.ecolind.2012.08.011},

issn = {1470160X},

year  = {2013},

date = {2013-01-01},

journal = {Ecological Indicators},

volume = {24},

pages = {557-561},

publisher = {Elsevier Ltd},

abstract = {The urbanization of the natural landscape has spread along the major axis of all large towns worldwide, what has resulted in an unprecedented increase in habitat fragmentation and ultimately in a mosaic of patches of native vegetation. These changes have a continuum of impacts on the processes and mechanisms that shape habitat diversity and species interactions. An important and overlooked aspect that may aid in the understanding of the effects of urbanization on species interactions is herbivory. Herbivores and leaf removal can signalize the effects of the habitat via their host plants. Another potentially useful measure for evaluating the effects of environmental stress on particular species is fluctuating asymmetry. We studied the herbivory levels and leaf fluctuating asymmetry on Solanum lycocarpum (Solanaceae) along an urban gradient in Brazil. The leaf area removed by folivores differed among sites and was significantly greater in the site with the higher level of urbanization. Also, the area removed varied significantly among individuals within urbanization sites. Similarly, the frequency of leaves with folivore damage was greater in the site with higher urbanization, although the area removed by them did not differ between shorter and larger plants. FA was significantly greater in the more urbanized sites in comparison with the other sites in the urbanization gradient and varied among individuals within site. Finally, we found a positive relationship between leaf area removed and FA values in the urbanization gradient. These results indicate that increased urbanization causes a reduction in habitat suitability for S. lycocarpum, which is reflected on higher FA levels. The leaf herbivores may benefit from the stress levels of hosts on more urbanized sites, which may have been caused by several factors acting in combination such as lower defenses, higher susceptibility and natural enemy pressures via habitat fragmentation/urbanization. This study exemplifies the variety of effects that urbanization exerts on remnant native populations and that fluctuating asymmetry could be a useful measure of the effects of these challenges on plant populations, and might also be used to assist management and conservation practices of natural areas within cities. © 2012 Elsevier Ltd. All rights reserved.},

keywords = {Fluctuating asymmetry, Herbivory, Solanum lycocarpum, Urbanization gradient},

pubstate = {published},

tppubtype = {article}

}

@article{Cuevas-Reyes2011a,

title = {Effects of generalist and specialist parasitic plants (Loranthaceae) on the fluctuating asymmetry patterns of ruprestrian host plants},

author = {Pablo Cuevas-Reyes and G. Wilson Fernandes and Antonio González-Rodríguez and Mariana Pimenta},

doi = {10.1016/j.baae.2011.04.004},

issn = {16180089},

year  = {2011},

date = {2011-01-01},

journal = {Basic and Applied Ecology},

volume = {12},

issue = {5},

pages = {449-455},

abstract = {Leaf fluctuating asymmetry (FA) is an important indicator of plant responses to various sources of stress, which range from poor nutritional and harsh environmental conditions to herbivory and parasitism. Mistletoes are important hemiparasites, which represent a source of stress for their host plants but, in spite of being common in all major biogeographical regions of the world, no study has measured the response of their hosts in terms of leaf FA. We addressed the effect of mistletoes on host-plant foliar FA by comparing parasitized and non-parasitized individuals of four host species in two sites in southeastern Brazil, Serra do Cipó and Serra do Rola Moça. In the four host species, parasitized individuals presented significantly higher levels of leaf FA than unattacked plants. The specialist mistletoe Phoradendron cf. amplexicaule induced higher levels of FA on its host Erythroxylum suberosum (Erythroxylaceae) than the generalist mistletoe Struthanthus flexicaulis did on either Mimosa calodendron (Fabaceae), Lychnophora pinaster (Asteraceae) or Stachytarpheta glabra (Verbenaceae). We hypothesized that specialized parasites could be more damaging to their hosts than generalist mistletoes, which could explain the higher FA levels observed. Significant differences in FA levels among parasitized individuals within species were found, which were significantly correlated with intensity of infection (number of mistletoes per host individual). The results indicate that mistletoes represent an important factor of stress for their host plants, and that FA can be an excellent instrument for evaluating the effects of infections by parasitic plants. © 2011 Gesellschaft für Ökologie.},

keywords = {Fluctuating asymmetry, Host parasite-relationships, mistletoe, Parasitism impact, Rupestrian fields, Serra do Cipó, Serra do Rola Moça},

pubstate = {published},

tppubtype = {article}

}

@article{Cuevas-Reyes2011,

title = {Contrasting herbivory patterns and leaf fluctuating asymmetry in Heliocarpus pallidus between different habitat types within a Mexican tropical dry forest},

author = {Pablo Cuevas-Reyes and Ken Oyama and Antonio González-Rodríguez and G. Wilson Fernandes and Luis Mendoza-Cuenca},

doi = {10.1017/S026646741100006X},

issn = {14697831},

year  = {2011},

date = {2011-01-01},

journal = {Journal of Tropical Ecology},

volume = {27},

issue = {4},

pages = {383-391},

abstract = {Leaf fluctuating asymmetry (FA) is considered an important indicator of environmentally induced stress in plants, but the relationship between herbivory and FA levels is not clear. In this study we compared leaf size and shape, leaf area consumed by herbivorous insects, and FA levels between individuals of Heliocarpus pallidus (Tiliaceae) from two adjacent and contrasting habitat types (deciduous and riparian) in the Chamela-Cuixmala tropical dry-forest biosphere reserve. Ten individuals of H. pallidus were collected in each habitat type. Leaf shape was assessed using geometric morphometric techniques. Results indicated statistically significant differences in leaf shape between individuals from the two habitat types. In individuals from the riparian habitat leaf area (mean = 42.3 ± 1.2 cm2), herbivory levels (mean = 25.5% ± 1.8%) and FA levels (mean = 0.38 ± 0.04 cm) were significantly higher than in individuals from the deciduous habitat (17.2 ± 3.5 cm2; 9.6% ± 1.0% and 0.18 ± 0.04 cm, respectively). Within habitats, significant correlations were found between total leaf area and percentage leaf area removed by insects (R2 = 0.92 in riparian habitats},

keywords = {Fluctuating asymmetry, geometric morphometrics, Herbivory, leaf size, tropical dry forest},

pubstate = {published},

tppubtype = {article}

}