Estancia para desarrollo de Tesis y Práctica Profesional  

P. Ing. Agrónomo Jorge Luis Hernández Vilchez

Universidad Nacional de Agricultura Catacamas, Olancho, HONDURAS

 Titulo de tesis: EFECTO DE LA EDAD EN LA MIGRACIÓN Y CONCENTRACIÓN ESPERMÁTICA EN ABEJAS REINAS DE Apis mellifera INSEMINADAS INSTRUMENTALMENTE EN ÉPOCA DE ESCASEZ DE RECURSOS EN YUCATÁN, MÉXICO 

Octubre 2015 a 25 Enero 2016

Tutor: M en C Chavier de Araujo Freitas

Reconocimiento Institucional a la trayectoria y legado del MVZ Jorge González Acereto

El Dr José de Jesús Williams (Rector de la UADY) y el M en C Marco Torres León (Director del campus) entregaron un reconocimiento a los 30 años de trayectoria incansable promoviendo la conservación de las abejas nativas y la cultura Maya en México y fuera de nuestras fronteras al académico Jorge Angel González Acereto. Con motivo del 45 aniversario de la fundación de la Escuela de Medicina Veterinaria se develó una placa con su nombre en el Meliponario del Campus de Ciencias Biológicas y Agropecuarias en la UADY.

P Brand, SR Ramírez, F Leese, JJG Quezada-Euan, R Tollrian, T Eltz (2015) Rapid evolution of chemosensory receptor genes in a pair of sibling species of orchid bees (Apidae: Euglossini)

 Abstract

Background

Insects rely more on chemical signals (semiochemicals) than on any other sensory modality to find, identify, and choose mates. In most insects, pheromone production is typically regulated through biosynthetic pathways, whereas pheromone sensory detection is controlled by the olfactory system. Orchid bees are exceptional in that their semiochemicals are not produced metabolically, but instead male bees collect odoriferous compounds (perfumes) from the environment and store them in specialized hind-leg pockets to subsequently expose during courtship display. Thus, the olfactory sensory system of orchid bees simultaneously controls male perfume traits (sender components) and female preferences (receiver components). This functional linkage increases the opportunities for parallel evolution of male traits and female preferences, particularly in response to genetic changes of chemosensory detection (e.g. Odorant Receptor genes). To identify whether shifts in pheromone composition among related lineages of orchid bees are associated with divergence in chemosensory genes of the olfactory periphery, we searched for patterns of divergent selection across the antennal transcriptomes of two recently diverged sibling species Euglossa dilemma and E. viridissima.

Results

We identified 3185 orthologous genes including 94 chemosensory loci from five different gene families (Odorant Receptors, Ionotropic Receptors, Gustatory Receptors, Odorant Binding Proteins, and Chemosensory Proteins). Our results revealed that orthologs with signatures of divergent selection between E. dilemma and E. viridissima were significantly enriched for chemosensory genes. Notably, elevated signals of divergent selection were almost exclusively observed among chemosensory receptors (i.e. Odorant Receptors).

Conclusions

Our results suggest that rapid changes in the chemosensory gene family occurred among closely related species of orchid bees. These findings are consistent with the hypothesis that strong divergent selection acting on chemosensory receptor genes plays an important role in the evolution and diversification of insect pheromone systems.

PDF BMC Evol Biol

 

 

 

 

3rd. IPBES meeting Pollinators, pollination and Food Production - Rome  27-31 July

Visitante Verano de la Investigación Científica Academia Mexicana de Ciencias

P QFB Aimee Giovanna Solis Greene de la Universidad Popular de la Chontalpa TABASCO

Proyecto: " Residencia espacio temporal de machos de Euglossa en la península de Yucatán (Hymenoptera: Apidae)" 29-junio al 21 de agosto

Tutor: Dr J Javier Quezada-Euán

Difunden investigación del CAAT sobre abejas sin aguijón 

Notimex

 Academia Mexicana de Ciencias

Rubén Guillermo Medina Hernández

Tesis de Maestría: Dimorfismo sexual isométrico en Euglossa viridissima Friese (Hymenoptera:Apidae:Euglossini) durante dos temporadas climáticas.

Mayo 4 - 2015

Asesor: Dr J Javier Quezada Euán 

PDF Insectes Sociaux