Ciudad Victoria, Mexico
Ciudad Victoria, Mexico

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Guevara-Guerrero G.,Instituto Tecnologico Of Cd Victoria | Castellano M.A.,U.S. Department of Agriculture | Gomez-Reyes V.,Universidad Michoacana de San Nicolás de Hidalgo
IMA Fungus | Year: 2016

Little is known of the truffle-like fungi of northern Mexico. Few mycologists have collected truffle-like specimens in this area. The wide diversity of habitat and potential mycorrhizal partners portend a unique and varied truffle-like mycota. In the conduct of recent field studies in this region we collected many interesting truffle-like specimens. We present two taxa that have unique characteristics, brownish spores with spines embedded within a distinctly inflated utricle surrounding each spore. Aroramyces balanosporus and A. herrerae are described as new species. This is the first record of the genus Aroramyces from North America. © 2016 International Mycological Association.


Vahed K.,University of Derby | Gilbert J.D.J.,University of Sussex | Weissman D.B.,California Academy of Sciences | Barrientos-Lozano L.,Instituto Tecnologico Of Cd Victoria
Evolution | Year: 2014

The function of nuptial gifts has generated longstanding debate. Nuptial gifts consumed during ejaculate transfer may allow males to transfer more ejaculate than is optimal for females. However, gifts may simultaneously represent male investment in offspring. Evolutionary loss of nuptial gifts can help elucidate pressures driving their evolution. In most katydids (Orthoptera: Tettigoniidae), males transfer a spermatophore comprising two parts: the ejaculate-containing ampulla and the spermatophylax-a gelatinous gift that females eat during ejaculate transfer. Many species, however, have reduced or no spermatophylaces and many have prolonged copulation. Across 44 katydid species, we tested whether spermatophylaces and prolonged copulation following spermatophore transfer are alternative adaptations to protect the ejaculate. We also tested whether prolonged copulation was associated with (i) male cercal adaptations, helping prevent female disengagement, and (ii) female resistance behavior. As predicted, prolonged copulation following (but not before) spermatophore transfer was associated with reduced nuptial gifts, differences in the functional morphology of male cerci, and behavioral resistance by females during copulation. Furthermore, longer copulation following spermatophore transfer was associated with larger ejaculates, across species with reduced nuptial gifts. Our results demonstrate that nuptial gifts and the use of grasping cerci to prolong ejaculate transfer are functionally equivalent. © 2014 The Society for the Study of Evolution.


Dias-Guerra W.,University of Brasilia | Carla De Oliveira P.,Federal University of Mato Grosso | Barrientos-Lozano L.,Instituto Tecnologico Of Cd Victoria
Journal of Orthoptera Research | Year: 2010

We reared Baeacris punctulatus (Orthoptera: Acrididae) in cages under seminatural conditions in Cuiabá, Mato Grosso, Brazil. Five nymphal instars were recorded. One generation required ∼ 82 d (24 d egg stage + 43 d nymphal development + 15 d preoviposition period). Colony females laid ∼ 4.4 egg pods during their ∼ 30-d adult life. Pods contained ∼ 13 eggs, and most eggs hatched, giving ∼ 56 offspring per female. Survival during the nymphal stage was 38.9%, with highest mortality in 4th-5 th instars. Average and maximum lifespans from hatch to adult death were 73 and 80 d, respectively. Field sampling in Campo Novo do Parecis and Parecis Plateau regions of Brazil showed that adults and older nymphs were present in all months of the year, but that oviposition and young nymphs were scarce during the dry-cool months of May to mid-August. Overall, our study suggests that in the State of Mato Grosso, there are 3.9 to 5.1 generations per year. The various instars could be differentiated by the number of antennal segments, body size, and shape and size of wing pads. Annual and regional variation in temperature and moisture may influence the life history and population dynamics of B. punctulatus.


Vargas J.A.,Instituto Tecnologico Of Cd Victoria | Garcia-Mundo L.,Instituto Tecnologico Of Cd Victoria | Genero M.,University of Castilla - La Mancha | Piattini M.,University of Castilla - La Mancha
CEUR Workshop Proceedings | Year: 2014

This paper present a summary of the paper published in the 18th International Conference on Evaluation and Assessment in Software Engineering (EASE 2014). The aim of this research is to discover the current state of Serious Games (SGs) quality initiatives, identifying gaps that merit future investigation. For this purpose, we conducted a systematic mapping study (SMS) on SG quality. The main results are summarized in this paper.


Guevara G.,Instituto Tecnologico Of Cd Victoria | Bonito G.,Duke University | Cazares E.,Oregon State University
Revista Mexicana de Biodiversidad | Year: 2013

Species in the genus Tuber have received little taxonomic attention in Mexico, despite its great ecological and economic importance. Only 10 species have been described for Mexico. In this study, Tuber canaliculatum, T. gibbosum, and T. malacodermum are described for the first time for the Mexican mycobiota. These species are distinguished by a combination of morphological and ecological characteristics. Illustarations and a dichotomic key are presented for the known described species from Mexico.


Guevara G.,Instituto Tecnologico Of Cd Victoria | Bonito G.,Instituto Tecnologico Of Cd Victoria | Bonito G.,Duke University | Trappe J.M.,Oregon State University | And 5 more authors.
Mycologia | Year: 2013

Recent surveys of belowground fungal biodiversity in México and USA have revealed many undescribed truffle species, including many in the genus Tuber. Here we describe seven new species: Tuber beyerlei, T. castilloi, T. guevarai, T. lauryi, T. mexiusanum, T. miquihuanense and T. walkeri. Phylogenetic analyses place these species within the Maculatum group, an understudied clade of small truffles with little apparent economic value. These species are among the more taxonomically challenging in the genus. We collected Tuber castilloi, T. mexiusanum and T. guevarai as fruit bodies and ectomycorrhizae on Quercus spp. in forests of eastern México. Tuber mexiusanum has a particularly broad geographic range, being collected in eastern USA under Populus deltoides and in Minnesota and Iowa in mixed hardwood forests. T. walkeri is described from the upper midwestern USA, and T. lauryi and T. beyerlei occur in the western USA. © 2013 by The Mycological Society of America, Lawrence, KS 66044-8897.


Healy R.A.,University of Minnesota | Smith M.E.,University of Florida | Bonito G.M.,Duke University | Pfister D.H.,Harvard University | And 11 more authors.
Molecular Ecology | Year: 2013

Fungal mitospores may function as dispersal units and/ or spermatia and thus play a role in distribution and/or mating of species that produce them. Mitospore production in ectomycorrhizal (EcM) Pezizales is rarely reported, but here we document mitospore production by a high diversity of EcM Pezizales on three continents, in both hemispheres. We sequenced the internal transcribed spacer (ITS) and partial large subunit (LSU) nuclear rDNA from 292 spore mats (visible mitospore clumps) collected in Argentina, Chile, China, Mexico and the USA between 2009 and 2012. We collated spore mat ITS sequences with 105 fruit body and 47 EcM root sequences to generate operational taxonomic units (OTUs). Phylogenetic inferences were made through analyses of both molecular data sets. A total of 48 OTUs from spore mats represented six independent EcM Pezizales lineages and included truffles and cup fungi. Three clades of seven OTUs have no known meiospore stage. Mitospores failed to germinate on sterile media, or form ectomycorrhizas on Quercus, Pinus and Populus seedlings, consistent with a hypothesized role of spermatia. The broad geographic range, high frequency and phylogenetic diversity of spore mats produced by EcM Pezizales suggests that a mitospore stage is important for many species in this group in terms of mating, reproduction and/or dispersal. See also the Perspective by Tedersoo et al. © 2012 Blackwell Publishing Ltd.


Barroso-Ake H.J.,Colegio de Mexico | Cibrian-Tovar J.,Colegio de Mexico | Segura-Leon O.L.,Colegio de Mexico | Azuara-Dominguez A.,Instituto Tecnologico Of Cd Victoria
Florida Entomologist | Year: 2016

To understand the chemical interaction of Diatraea magnifactella Dyar (Lepidoptera: Crambidae) with its conspecifics, the aim of the present paper was to describe and determine the effect of age on the duration of pre-courtship behavior in the female of D. magnifactella. To do so, we established a colony of D. magnifactella in the laboratory and placed 60 newly emerged females individually in 15 × 15 cm (height × width) acrylic cases. Then, we observed the behavior and effect of age on the duration of pre-courtship in the females for 11 d. The pre-courtship behavior of D. magnifactella was described based on the pre-courtship behavior of Diatraea considerata Heinrich, whereas the relationship between the duration of the pre-courtship behavior and the age of the female was determined through a non-linear regression analysis. The pre-courtship behavior of D. magnifactella females began with the separation of the wings from the body and the rhythmic movement of the antennae. After this, the female rotated its body on the surface where it was located, flexed its body, and exposed its sex gland. Pre-courtship started 6 h after the onset of darkness. It lasted longest on days 3 to 6 after it began. The duration decreased from day 5 until it ended on day 10. This pattern indicated that the age of the female plays a negative role in the duration of the pre-courtship activity in D. magnifactella.


PubMed | U.S. Department of Agriculture, Instituto Tecnologico Of Cd Victoria and Universidad Michoacana de San Nicolás de Hidalgo
Type: Journal Article | Journal: IMA fungus | Year: 2016

Little is known of the truffle-like fungi of northern Mexico. Few mycologists have collected truffle-like specimens in this area. The wide diversity of habitat and potential mycorrhizal partners portend a unique and varied truffle-like mycota. In the conduct of recent field studies in this region we collected many interesting truffle-like specimens. We present two taxa that have unique characteristics, brownish spores with spines embedded within a distinctly inflated utricle surrounding each spore.


PubMed | Instituto Tecnologico Of Cd Victoria
Type: Journal Article | Journal: Mycologia | Year: 2013

Recent surveys of belowground fungal biodiversity in Mxico and USA have revealed many undescribed truffle species, including many in the genus Tuber. Here we describe seven new species: Tuber beyerlei, T. castilloi, T. guevarai, T. lauryi, T. mexiusanum, T. miquihuanense and T. walkeri. Phylogenetic analyses place these species within the Maculatum group, an understudied clade of small truffles with little apparent economic value. These species are among the more taxonomically challenge-ing in the genus. We collected Tuber castilloi, T. mexiusanum and T. guevarai as fruit bodies and ectomycorrhizae on Quercus spp. in forests of eastern Mxico. Tuber mexiusanum has a particularly broad geographic range, being collected in eastern USA under Populus deltoides and in Minnesota and Iowa in mixed hardwood forests. T. walkeri is described from the upper midwestern USA, and T. lauryi and T. beyerlei occur in the western USA.

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