Leonardo Arellano-Méndez | Universidad Autónoma de Tamaulipas (original) (raw)

Papers by Leonardo Arellano-Méndez

Toxicology Letters, Oct 1, 2016

Southwestern Entomologist, Jun 17, 2022

Southwestern Entomologist, Jan 11, 2021

Phytophagous insects on crops enable new ecological niches in agroecosystems, which involves comp... more Phytophagous insects on crops enable new ecological niches in agroecosystems, which involves complex dynamics of plant fitness, weather conditions, balance of natural enemies, and potential to deal with plant defenses and nutrient assimilation (Wan et al. 2019). Many phytophagous insects become crop pests when propitious conditions occur in agroecosystems and could become phytosanitary problems. The genus Diabrotica is a beetle group with complex evolution that includes species that feed on horticultural crops (Clark et al. 2001). Some underutilized crops can be hosts for Diabrotica species, although relation with them often is unknown because of limited production. Common purslane is an underutilized crop and also considered a widespread weed in Mexico. Some purslane varieties are consumed as food as part of traditional preparations, which motivates cultivation in some parts of Mexico (Bautista-Ortega 2016). Recently, a demonstration plot of common purslane was established in an experimental field of Unidad Académica Multidisciplinaria Mante-UAT (22°46'02.1"N, 99°00'00.8"W) at Mante, Tamaulipas, Mexico. Accessions from Nuevo León and Tamaulipas were sown in the plot. The purslane crop was established in organic open-field cultivation and biofertilizers (Trichoderma spp. and Bacillus subtilis) were applied to soil. The crop started on 17 April 2020 and after a month, foliar damage by Diabrotica spp. was observed on 15-20 cm tall plants. Direct damage was caused by Diabrotica beetles feeding on foliage, and feces deposition caused indirect damage by affecting leaf appearance (Fig. 1A, B). Diabrotica species were identified with Diabrotica ID tool available on https://idtools.org/id/beetles/diabrotica/key.php that allowed identification of Diabrotica adelpha Harold (Derunkov et al. 2013) (Fig. 1C) as the dominant species. It was distinguished by color pattern of the elytra, elytra punctation density, color pattern of antennomeres, obtuse sutural angle of elytra, and color pattern of legs (Fig. 1C, D, E, F, and G, respectively). Diabrotica balteata Le Conte also was observed. It was identified by its red head, green elytra with sulfur yellow patches (Fig. 1H), which also was on purslane foliage (Fig. 1I), causing the same damage (Fig. 1J) and coexisting with D. adelpha (Fig. 1K). Abundance was 78.3% for D. adelpha and 21.7% for D. balteata.

Plant Species Biology, Feb 25, 2021

Host traits partly determine the abundance and species richness of epiphytes in tropical forests.... more Host traits partly determine the abundance and species richness of epiphytes in tropical forests. It has been proposed that older trees with rough bark and evergreens often house more individuals and more epiphytic species than those with thin, smooth, and peeling bark, which harbor few epiphytes. We hypothesize (i) that epiphytes are more abundant and species‐rich in the more shaded forest, which is related to bark roughness, and (ii) that epiphytes are distributed in the middle of the host, where microenvironmental conditions are more favorable to survival. We evaluated abundance, species richness, and vertical distribution of epiphytes in two tropical dry forests, according to the deciduousness and basal area of the trees. Moreover, we selected the most abundant epiphytes to test whether their distribution is related to a specific bark type and examine their vertical distribution in two dry forests. We distinguished a high abundance and species richness of epiphytes in the deciduous forest, although basal area and host species richness were higher in the semi‐deciduous forest. In both forests, we found a positive relationship between epiphyte abundance and basal area. Higher abundance of epiphytes was related to the predominance of Tillandsia schiedeana, a drought‐adapted species, in both forests. Unexpectedly, epiphytes abundantly colonized Bursera simaruba, a host with peeling bark and a very branched crown, where small individuals of T. schiedeana colonized abundantly toward the top of the crown. Our results show the importance of the tropical dry forest, particularly, B. simaruba, in maintaining epiphyte diversity in terms of T. schiedeana colonization.

Southwestern Entomologist

Supplemental material, TRC882203 Supplemental Material7 for Vascular Epiphytic Diversity in a Neo... more Supplemental material, TRC882203 Supplemental Material7 for Vascular Epiphytic Diversity in a Neotropical Transition Zone Is Driven by Environmental and Structural Heterogeneity by Edilia de la Rosa-Manzano, Glenda Mendieta-Leiva, Antonio Guerra-Pérez, Karla María Aguilar-Dorantes, Leonardo Uriel Arellano-Méndez and Jorge Ariel Torres-Castillo in Tropical Conservation Science

Supplemental material, TRC882203 Supplemental Material6 for Vascular Epiphytic Diversity in a Neo... more Supplemental material, TRC882203 Supplemental Material6 for Vascular Epiphytic Diversity in a Neotropical Transition Zone Is Driven by Environmental and Structural Heterogeneity by Edilia de la Rosa-Manzano, Glenda Mendieta-Leiva, Antonio Guerra-Pérez, Karla María Aguilar-Dorantes, Leonardo Uriel Arellano-Méndez and Jorge Ariel Torres-Castillo in Tropical Conservation Science

Supplemental material, TRC882203 Supplemental Material5 for Vascular Epiphytic Diversity in a Neo... more Supplemental material, TRC882203 Supplemental Material5 for Vascular Epiphytic Diversity in a Neotropical Transition Zone Is Driven by Environmental and Structural Heterogeneity by Edilia de la Rosa-Manzano, Glenda Mendieta-Leiva, Antonio Guerra-Pérez, Karla María Aguilar-Dorantes, Leonardo Uriel Arellano-Méndez and Jorge Ariel Torres-Castillo in Tropical Conservation Science

Supplemental material, TRC882203 Supplemental Material9 for Vascular Epiphytic Diversity in a Neo... more Supplemental material, TRC882203 Supplemental Material9 for Vascular Epiphytic Diversity in a Neotropical Transition Zone Is Driven by Environmental and Structural Heterogeneity by Edilia de la Rosa-Manzano, Glenda Mendieta-Leiva, Antonio Guerra-Pérez, Karla María Aguilar-Dorantes, Leonardo Uriel Arellano-Méndez and Jorge Ariel Torres-Castillo in Tropical Conservation Science

Supplemental material, TRC882203 Supplemental Material4 for Vascular Epiphytic Diversity in a Neo... more Supplemental material, TRC882203 Supplemental Material4 for Vascular Epiphytic Diversity in a Neotropical Transition Zone Is Driven by Environmental and Structural Heterogeneity by Edilia de la Rosa-Manzano, Glenda Mendieta-Leiva, Antonio Guerra-Pérez, Karla María Aguilar-Dorantes, Leonardo Uriel Arellano-Méndez and Jorge Ariel Torres-Castillo in Tropical Conservation Science

Revista de Biología Tropical, 2010

Hurricane impact on Thalassia testudinum (Hydrocharitaceae) beds in the Mexican Caribbean. Hurric... more Hurricane impact on Thalassia testudinum (Hydrocharitaceae) beds in the Mexican Caribbean. Hurricanes have increased in strength and frequency as a result of global climate change. This research was conducted to study the spatio-temporal distribution and changes of Thalassia testudinum, the dominant species in Bahia de la Ascension (Quintana Roo, Mexico), when affected by heavy weather conditions. To complete this objective, a 2001 Landsat ETM+ image and the information from 525 sampling stations on morpho-functional and coverage of T. testudinum were used, and the seeds generated for the classification of eight benthic habitats. To quantify the changes caused by two hurricanes, we used two images, one of 1988 (Gilberto) and another of 1995 (Roxanne); other three data sets (2003, 2005 and 2007) were also used to describe the study area without major weather effects. Six categorial maps were obtained and subjected to analysis by 8 Landscape Ecology indexes, that describe the spatial characteristics, structure, function, change of the elements (matrix-patch-corridor), effects on ecosystems, connectivity, edges, shape and patch habitat fragmentation. Models indicate that T. testudinum may be classified as a continuum (matrix), since the fragments were not observed intermittently, but as a progression from minimum to maximum areas in reference to their coverage (ecological corridors). The fragments do not have a regular shape, indicating that the impacts are recent and may be due to direct effects (high-intensity hurricanes) or indirect (sediment). Fragments of type "bare soils" have a discontinuous distribution, and are considered to be the sites that have remained stable over a long timescale. While more dense coverage areas ("beds", "medium prairie" and "prairie") have low fragmentation and high connection of fragments. Features have an irregular perimeter and radial growth of formal; suggesting that the impact of meteors has no effect on the resilience of T. testudinum in this ecosystem, indicating good environmental quality to grow in this bay.

Revista de biología marina y oceanografía, 2013

The marine sedimentary deposits are a widely attended theme in the world because of its oceanogra... more The marine sedimentary deposits are a widely attended theme in the world because of its oceanographical, ecological, social and economical transcendence. Those deposits are part of very important sediment reservoirs on the coast that feed and protect sandy beaches, and are key habitat for several benthic species. On the coast of Yucatan (Mexico) there are conspicuous sedimentary deposits forming well structured and outstanding submarine dune swarms, close to the shoreline at the localities of Dzilam de Bravo, San Felipe and El Cuyo. The objective of this research was to assess the spatial disposition and inter-decadal movements of these dune fields. We used standardized satellite images analyses, validated with seismic profiles and a basic sedimentological description of the identified structures in the field. The dunes showed different magnitude position changes, with estimated net annual movement rates between 2.94 m year-1 and 10.83 m year-1 , heading mainly northwest. The spatial disposition of these dunes was confirmed by the field data, the smallest dunes detected with the satellite images were 0.31 m high, conformed by medium, conformed by medium and fine sand sediments. It is suggested that the orientation of the shore line and wave incidence, jointly with the dominant currents in the zone, determine the formation of these sediment accumulations in the region. This evaluation presents an innovative and confident approach for the study of submarine dunes in shallow waters, using remote sensing incomes and standardized spatial analyses. These findings set basis for a systematic monitoring of these marine systems, and contributes with original information on the study and understanding of the coastal marine processes in Mexico.

Supplemental material, TRC882203 Supplemental Material2 for Vascular Epiphytic Diversity in a Neo... more Supplemental material, TRC882203 Supplemental Material2 for Vascular Epiphytic Diversity in a Neotropical Transition Zone Is Driven by Environmental and Structural Heterogeneity by Edilia de la Rosa-Manzano, Glenda Mendieta-Leiva, Antonio Guerra-Pérez, Karla María Aguilar-Dorantes, Leonardo Uriel Arellano-Méndez and Jorge Ariel Torres-Castillo in Tropical Conservation Science

Ciencias Marinas, 2013

Conspicuous sedimentary deposits forming well-structured and prominent submarine dunes are found ... more Conspicuous sedimentary deposits forming well-structured and prominent submarine dunes are found on the coast of Yucatan (Mexico), close to the ports of Dzilam de Bravo, San Felipe, and El Cuyo. The objective of this study was to evaluate the morphological and sedimentological features of these submarine dunes. Sub-bottom seismologic profiles were obtained and standardized sedimentological analyses were performed on sediment samples collected at the three study sites. Both the height and wavelength of dunes were different between the three sites, mean heights ranging from 0.84 to 2.28 m and mean wavelengths from 98 to 330 m. Most of the dunes showed a wellmarked asymmetry, which is related to the direction of their movements. Their granulometric composition was dominated by medium, moderately well-sorted sand. This study provides bases for future systematic monitoring of these peculiar ecosystems, including information to be considered for the evaluation of their ecological role in ...

Revista de Biología Tropical, 2011

Hurricanes have increased in strength and frequency as a result of global climate change. This re... more Hurricanes have increased in strength and frequency as a result of global climate change. This research was conducted to study the spatio-temporal distribution and changes of Thalassia testudinum, the dominant species in Bahia de la Ascension (Quintana Roo, Mexico), when affected by heavy weather conditions. To complete this objective, a 2001 Landsat ETM+ image and the information from 525 sampling stations on morpho-functional and coverage of T. testudinum were used, and the seeds generated for the classification of eight benthic habitats. To quantify the changes caused by two hurricanes, we used two images, one of 1988 (Gilberto) and another of 1995 (Roxanne); other three data sets (2003, 2005 and 2007) were also used to describe the study area without major weather effects. Six categorial maps were obtained and subjected to analysis by 8 Landscape Ecology indexes, that describe the spatial characteristics, structure, function, change of the elements (matrix-patch-corridor), effec...

Revista de Biología Tropical, 2016

Seagrasses in coastal environments have been threatened by increased human activities; these have... more Seagrasses in coastal environments have been threatened by increased human activities; these have negatively altered processes and environmental services, and have decreased grassland areas. The aim of this study was to generate knowledge of Thalassia testudinum distribution, state of the structure and fragmentation level in two reefs of the Veracruz Reef System National Park (PNSAV). Two different reefs were selected: Sacrificios in the North and near the coast, and Cabezo in the South and away from the coast. Shoot-specific and area-specific characteristics of submerged macrophytes meadows present were determined, and four morpho-functional groups were identified. Significant differences between plant coverage were tested through nonparametric ANOVA, Kruskal-Wallis test. A supervised classification of spatial high-resolution image verified with field data was performed (55 Sacrificios and 290 Cabezo). The fragmentation level was calculated using landscape metrics, class level and ...