Desarrollo del gametofito de Elaphoglossum petiolatum (Sw.) Urban (Lomariopsidaceae) Auteurs: BLANCA PEREZ GARCIA, Irma Reyes Jaramillo

Flora y vegetación acuáticas de localidades selectas del estado de Querétaro Auteurs: MAHINDA LUISA FERNANDA MARTINEZ Y DIAZ DE SALAS, Adriana García Mendoza

Response of dung beetle diversity to human-induced changes in a tropical landscape Auteurs: Gonzalo Halffter, Lucrecia Arellano

“…This paper examines dung beetle communities in remnant patches of tropical deciduous forest at Veracruz, Mexico, as a case study of the effects of tropical deforestation on biodiversity. …”

Dinámica poblacional de ácaros de las familias Tetranychidae y Phytoseiidae asociados al papayo (Carica papaya L., 1753) Auteurs: Abato Zárate, Marycruz, Villanueva Jiménez, Juan A., Otero Colina, Gabriel, Ávila Reséndiz, Catalino, Reyes Pérez, Noel

“…Altamirano, Veracruz, Mexico, with conventional management including pesticides and fertilizers. …”

Genetic relationships of the Santa Catalina Island rattleless rattlesnake, Crotalus catalinensis (Serpentes: Viperidae) Auteurs: Murphy, Robert W., Crabtree, Ben

“…Crotalus catalinensis es una especie de ofidio que habita solamente en la Isla Santa Catalina, B.C. Norte, México. Morfológicamente se distingue de las otras especies de Crotalus por la ausencia de cascabel en la cola. las relaciones evolutivas de C. catalinensis han sido objeto de controversia, ya que se le ha considerado afin con C. atrox, C. ruber ^ C. scutulatus En este trabajo se investigaron las relaciones filogenéticas de C. catalinensis por medio de información proveniente de aloenzimas de 27 ioci genéticos presupuestos. …”

DISTRIBUCIÓN ESPACIAL Y FLUCTUACIÓN POBLACIONAL DE PHYLLOCOPTRUTA OLEIVORA (ASHMEAD) (ACARI: ERIOPHYIDAE) EN CÍTRICOS DE GÜEMEZ, TAMAULIPAS Auteurs: Landeros, Jeronimo, Balderas, Juan, Badii, Mohammad H, Sánchez, Victor M., Guerrero, Eugenio, Flores, Adriana E.

“…The present investigation was accomplished in the county of Güemez, Tamaulipas, Mexico during the period june of 1998 to October of 1999. …”

Comportamiento depredador de dos especies de arañas del género Phonotimpus (Araneae: Phrurolithidae) Auteurs: Angulo Ordoñes, Gabriela Guadalupe, Dor, Ariane, Campuzano G., Emmanuel Franco, Ibarra-Núñez, Guillermo

“…These spiders live in the soil leaf litter of a cloud forest and coffee orchards in Chiapas, Mexico. There are no previous studies of the hunting behavior for this spiders’ family. …”

Evaluación de eventos reproductivos y estrés fisiológico en vertebrados silvestres a partir de sus excretas: evolución de una metodología no invasiva Auteurs: Valdespino, Carolina, Martínez-Mota, Rodolfo, García-Feria, Luis Manuel, Martínez-Romero, Luis Enrique

“…Since this type of research requires of both, good assay protocols as well as interesting ecological questions, creative collaboration between lab technicians and animal ecologists is urgent in countries like Mexico, where financial resources designated to investigation are so scarce.…”

Toxicity of four insecticides on Tamarixia triozae (Burks) (Hymenoptera: Eulophidae) and its host Bactericera cockerelli (Sulc) (Hemiptera: Triozidae) Auteurs: Luna-Cruz, Alfonso, Lomeli-Flores, J. Refugio, Rodríguez-Leyva, Esteban, Ortega-Arenas, Laura D., Huerta-de la Peña, Arturo

“…Bactericera cockerelli is one of the most important pests in solanaceus crops in Mexico. Insecticides use is the most common control strategy against this pest, but recently the parasitoid Tamarixia triozae was proposed as part of IPM programs; thus, the objective of the present research was to explore compatibility of insecticides and parasitoids. …”

Entomopathogenic fungi isolated from soil and immature white grubs (Coleoptera: Melolonthidae) in corn agrosystems Auteurs: Hernández-Velázquez, V. Manuel, Cervantes Espíndola, Zito, Villalobos, Francisco J., Lina García, Laura, Peña Chora, Guadalupe

“…The knowledge on the presence and abundance of natural enemies of white grubs in Mexico is limited. Therefore the aim of the present work is to isolate, identify and preserve entomopathogens from corn cultivated soils and from collections made directly on white grubs in Morelos. …”

An annotated checklist of dinoflagellates (Dinophyceae) from the Mexican Pacific Auteurs: Okolodkov, Yuri B., Gárate-Lizárraga, Ismael

Extraction and embryo morphology of Bursera bipinnata (Burseraceae) Auteurs: Ramos-Ordoñez, María Felix, del Coro Arizmendi, María, Flores-Enríquez, Valeria, Márquez-Guzmán, Judith

“…In the genus Bursera, whose main center of diversification is Mexico, the diaspore is a pyrene formed by a strongly lignified endocarp enclosing the seed. …”

Spatial distribution, size structure and reproduction of Astrophytum ornatum (Cactaceae) Auteurs: Zepeda, Verónica, Golubov, Jordan, Mandujano, María C.

“…The aim of this study was to determine factors influencing the maintenance of their populations to provide information to establish their conservation status.Methods: We analyzed the population structure, spatial distribution pattern and reproduction of A. ornatum in one remnant population in Cadereyta de Montes, Querétaro, Mexico.Key results: The species has an aggregated spatial distribution pattern, which suggests an interaction with nurse species or cracks and rocks that provide shade. …”

Origin, domestication, and genetic diversity centers of the Mexican plum, Spondias purpurea (Anacardiaceae) Auteurs: Fortuny-Fernández, Norka María, Monserrat Ferrer, Miriam, Ruenes-Morales, María del Rocío

“…Five groups of haplotypes were identified with the nested contingency analysis for all sequences of the genus, and another five for the S. purpurea sequences.Conclusions: Analyses of the results suggest the following: 1) the lack of differentiation between the lineages may be due to hybridization between species of this genus, a hypothesis yet to be tested with other molecular markers; 2) the Western region of Mexico (Jalisco, Nayarit, Michoacán) is the center of origin; 3) the center of origin as well as Guatemala are domestication centers; 4) eight populations are particularly important for germplasm conservation programs due to the haplotypes they contain and three provinces with high nucleotide diversity.…”

Mycelial inhibition of Trichoderma spp. isolated from the cultivation of Pleurotus ostreatus with an extract of Pycnoporus sp. Auteurs: Talavera-Ortiz, Anaid, Chaverri, Priscila, Diaz-Godinez, Gerardo, Acosta-Urdapilleta, Ma de Lourdes, Villegas, Elba, Tellez-Tellez, Maura

“…These were identifiedmorphologically and molecularly, followed by tests to inhibit the growth of Trichoderma strains in both agar and wheat straw, using a cetonic extract of thedehydrated fruiting body of Pycnoporus sp.Key results: Two strains of Trichoderma (T. pleuroti and T. atrobrunneum, belonging to the clade of T. harzianum) were isolated from infected substrate obtained in production modules of Pleurotus ostreatus located in Tlaquitenango and Cuernavaca, in the state of Morelos, Mexico. The effect of a cetonic extract of the fruiting body of Pycnoporus sp. on the mycelial growth of the isolated strains of Trichoderma was also evaluated, observing decrease in mycelial growth rate in Petri dish up to 72% and on lignocellulosic substrate both mycelial growth and sporulation were delayed up to 10 days.Conclusions: The extract of Pycnoporus sp. could be an alternative to control the infection by Trichoderma spp. in mushroom cultures of the genus Pleurotus.  …”

Taxonomic update of the benthic marine red algae (Rhodophyta) from the Mexican Atlantic Auteurs: García García, Annie May Ek, Cabrera Becerril, Ernesto, Núñez Reséndiz, María Luisa, Dreckmann, Kurt M., Sentíes, Abel

“…Hence, our main objective was to present an update for the marine benthic red algae from the Mexican coast of the Gulf of Mexico, and the Mexican Caribbean Sea, in which all the new records are included for the region since the contributions mentioned above. …”

Cookeina colombiana (Sarcoscyphaceae, Ascomycota) a new species from the department Córdoba, Colombia Auteurs: Raymundo, Tania, Montes-Fuentes, Gabriel, Valenzuela, Ricardo

“…The material is deposited in the herbaria ENCB of the Escuela Nacional de Ciencias Biológicas of the Instituto Politécnico Nacional in Mexico, and HUC, of the Universidad de Córdoba, in Colombia.Key results: The new species Cookeina colombiana is described, characterized by the color of the apothecia on the hymenial surface, which are orange-brown, pale brown, brown to reddish brown, at the center dark brown to almost black in some specimens, and on the exterior surface pastel red, brown red, pale brown to reddish brown. …”

Biological variation in climbing aroids Auteurs: Bautista-Bello, Alma Patricia, Krömer, Thorsten, Acebey, Amparo R., Weichgrebe , Leticia, Zotz, Gerhard

“…Additionally, a census of six aroid species was conducted at the Tropical Biological Station “Los Tuxtlas”, Veracruz, Mexico. For each individual we searched for the connections of its adventitious roots and stems with the soil, in addition we took measurements of its total length and leaves to create three ontogenic classes. …”

Visit frequency of Euglossine bees (Hymenoptera: Apidae) to mature fruits of Vanilla planifolia (Orchidaceae) Auteurs: Lozano Rodríguez, Miguel Ángel, Luna Rodríguez, Mauricio, Pech Canché , Juan Manuel, Menchaca García , Rebeca Alicia, Cerdán Cabrera, Carlos Roberto

“…Methods: We held 11 observations set within a month (from March 6 to April 6, 2021) in an experimental Vanilla planifolia plantation with mature fruits of vanilla in Veracruz, Mexico. Each observation lasted for ten hours (from 8:00 to 18:00), representing a total of 110 hours sampling effort. …”

Adopting ecological restoration goals as a critical goal in mining tailings mitigation: a methodological proposal Auteurs: Márquez-Huitzil, Roberto, Martínez-Garza, Cristina, Osorio Beristain, Marcela

“…Background and Aims: In Mexico there are accumulations of toxic and unstable materials discarded by mining, called tailings, which represent a potential and effective risk for ecosystems and society. …”