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4 resultados encontrados para: AUTOR: López Rosado, Diego G
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1.
- Artículo con arbitraje
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Resumen en inglés

Triatoma dimidiata (Latreille) is a key vector complex of Trypanosoma cruzi, etiologic agent of Chagas disease, as it spans North, Central, and South America. Although morphological and genetic studies clearly indicate existence of at least five clades within the species, there has been no robust or systematic revision, or appropriate nomenclature change for species within the complex. Three of the clades (haplogroups) are distributed in Mexico, and recent evidence attests to dispersal of clades across previously “presumed” monotypic geographic regions. Evidence of niche conservatism among sister species of this complex suggests that geographic dispersal is possible for non-sympatric populations, although no information is available on the behavioural aspects of potential interclade interactions, for instance whether differentiation of chemical signaling or response to these signals could impede communication among the haplogroups. Methods: Volatiles emitted by disturbed bugs, Brindley’s (BGs), and metasternal (MGs) glands were identified using solid-phase micro-extraction (SPME) and gas chromatography coupled mass spectrometry (GC-MS). Volatile compounds emitted by BGs and MGs, and those secreted by disturbed nymphs and adults, of the three Mexican T. dimidiata haplogroups were tested for avoidance behaviour by conspecific nymphs and adults using an olfactometer.

Results: Triatoma dimidiata haplogroups all have three age-related alarm responses: absence of response by early stage nymphs, stage-specific response by 4-5th stage nymphs, and a shared 4-5th nymph and adult response to adult compounds. Disturbed bugs released 15 to 24 compounds depending on the haplogroup, among which were three pyrazines, the first report of these organoleptics in Triatominae. Isobutyric acid from BGs was the most abundant molecule in the response in all haplogroups, in addition to 15 (h1) to 21 (h2 and h3) MG compounds. Avoidance behaviour of disturbed bugs and volatiles emitted by BGs were haplogroup specific, while those from the MG were not. Conclusions: Discriminant and cluster analysis of BG + MG compounds indicate significant separation among the three haplogroups, while alarm response compounds were similar between h2 and h3, both distinct from h1. This latter haplogroup is ancestral phylogenetically to the other two. Our results suggest that alarm responses are a conserved behaviour in the Triatoma dimidiata complex.


2.
Libro
Historia y pensamiento económico de México / Diego G. López Rosado
López Rosado, Diego G. ;
Distrito Federal, México : Universidad Nacional Autónoma de México. Instituto de Investigaciones Económicas , 1974
Clasificación: 330.0972 / L6/5 v.
Bibliotecas: Chetumal
Cerrar
SIBE Chetumal
ECO030001910 (Disponible) , ECO030001911 (Disponible) , ECO030001912 (Disponible) , ECO030001913 (Disponible) , ECO030001909 (Disponible)
Disponibles para prestamo: 5

3.
Libro
Historia y pensamiento económico de México: clases sociales - partidos políticos / Diego G. López Rosado
López Rosado, Diego G. ;
México : Universidad Nacional Autónoma de México. Instituto de Investigaciones Económicas , 1974
Clasificación: 330.0972 / L6
Bibliotecas: San Cristóbal
Cerrar
SIBE San Cristóbal
SAA000903 (Disponible)
Disponibles para prestamo: 1

4.
Libro
Curso de historia económica de México / Diego G. López Rosado
López Rosado, Diego G. ;
México : Universidad Nacional Autónoma de México. Instituto de Investigaciones Económicas , 1973
Clasificación: 330.0972 / L64
Bibliotecas: San Cristóbal
Cerrar
SIBE San Cristóbal
SAA002648 (Disponible)
Disponibles para prestamo: 1