Visitantes Verano de la Investigación Científica Academia Mexicana de Ciencias

 Universidad Juárez Autónoma de Tabasco.

Br. Brenda Alfonso Dávila

Br. Sergei Paolo Arévalo Campos

Proyecto: Diagnóstico de enfermedades y parasitosis en abejas melíferas (Apis mellifera).

27 de junio al 12 de agosto.

Tutor:  Dr.  Wílliam de Jesús May Itzá

Medina RG, Fairbairn DJ, Bustillos A, Moo-Valle H, Medina S, Quezada-Euán J J G (2016) Variable patterns of intraspecific sexual size dimorphism and allometry in three species of eusocial corbiculate bees. Insectes Sociaux 63: 493-500

 

Abstract

Sexual size dimorphism (SSD), in which one sex is larger than the other, has remained understudied in social insects, particularly bees. Using weight and linear structural measurements, we quantified the magnitude of SSD and its variation across nests in three species of corbiculate bees, two belonging to the highly eusocial Apini (Apis mellifera) and Meliponini (Melipona beecheii), and one to the primitively eusocial Euglossini (Euglossa viridissima). We asked if similar to most insects, including Hymenoptera, SSD is female-biased in these eusocial species. Contrary to expectations, we found that SSD was moderately male-biased in the two highly eusocial species and slightly male-biased for weight and not significant for linear size in E. viridissima. The possible roles of queen protogyny and reduced brood provisioning by queens in shaping these patterns of SSD are discussed. The allometry of SSD among nests differed among species as well, ranging from hypoallometry in A. mellifera, to isometry in M. beecheii, to hyperallometry in E. viridissima. This variation indicates that the phenotypic response of body size to differing conditions across nests differs both between sexes and among species. The variation detected among the three studied species in both SSD and allometry for SSD precludes any broad generalizations to other corbiculate bees. However, it does suggest that corbiculate bees can provide a new and diverse framework to analyze the effects of social environment on the evolution of animal sexual dimorphism.

 

 PDF Insectes Sociaux

Carolina Isabel Cuanalo Romero

 Tesis de Maestría: Biología reproductiva y apifauna visitante de la jícama Pachyrhizus erosus (L) Urban: (Fabaceae-Papilionoideae) en Yucatán. 

Fecha de examen 7 de junio de 2016.

 

Asesores: Dr William May Itzá y Dr J Javier Quezada Euán

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Curso de Educación Contínua: "Diagnóstico y control de las principales enfermedades y parasitosis en las abejas melíferas" 

Inicio en Octubre 2016

Instructores: Dr Luis Medina Medina y Dr William May Itzá

 

 

PROGRAMA DEL CURSO

Visitantes: Philipp Brand (Davis California) e Ismael Hinojosa (UNAM) en compañia de Rubén Medina (estudiante de Doctorado) y Javier Quezada colectando abejas euglossinas como contribución al análisis genómico de las mismas

 

Macias Macias J O; Quezada-Euán J J G (2015) Stingless bees in a temperate climate: oviposition behavior and duration of ontogenic development stages in Melipona colimana (Hymenoptera: Meliponini). J. Apicultural Res. 54: 255-259

Abstract

Melipona colimana is a stingless bee endemic to temperate areas of the Trans-Mexican volcanic belt, where intranest behavior during the provisioning and oviposition process, duration of ontogenic development stages and time of emergence of individuals were determined. It was observed that the dynamics of provisioning and oviposition do not differ substantially from tropical species of the same genus, but ontogenic development in a temperate climate was longer than in a tropical climate, possibly due to lower temperatures in the original habitat of the species. Duration of ontogenic

development of M. colimana individuals is the longest recorded so far among the species of Melipona genus. Worker bees took 55.44 ± 1.09 days to emerge from the cells; males, 57.14 ± 0.94 and gynes, 52.62 ± 0.63, with statistical differences between them (F = 367.72, DF = 2, 395, p < .05). The gynes emerged before workers, and workers before the males. The obtained data can be used to promote the sustainable use of this species in mountains in Mexico.

PDF Journal Apicultural Research