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... Search result page. Title: Fauna de milpies (Arthopoda: Diplopoda) edáficos de una selva de Los Tuxtlas, Ver. México. Author: Bueno Villegas, Julián ; Rojas Fernández, Patricia. Abstract: Journal: Acta Zoologica Mexicana. Issn:... more
... Search result page. Title: Fauna de milpies (Arthopoda: Diplopoda) edáficos de una selva de Los Tuxtlas, Ver. México. Author: Bueno Villegas, Julián ; Rojas Fernández, Patricia. Abstract: Journal: Acta Zoologica Mexicana. Issn: 00651737. EIssn: Year: 1999. Volume: Issue: 76. ...
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DiplópoDos se conocen como diplópodos, milpiés, rosquillas o caramuelas a los artrópodos que pertenecen a la clase diplopoda, y que junto con los chilopoda (ciempiés), symphyla (ciempiés de jardín) y pauro-poda (paurópodos) conforman el... more
DiplópoDos se conocen como diplópodos, milpiés, rosquillas o caramuelas a los artrópodos que pertenecen a la clase diplopoda, y que junto con los chilopoda (ciempiés), symphyla (ciempiés de jardín) y pauro-poda (paurópodos) conforman el grupo de los mi-riápodos (myriapoda). Los miriápodos en general, y BoLetín BimestraL de La comisión nacionaL para eL conocimiento y uso de La BiodiVersidad particularmente los diplópodos, son considerados por algunos autores como uno de los grupos más antiguos de artrópodos terrestres, pues de acuerdo con el regis-tro fósil éstos aparecieron durante el ordovícico, hace aproximadamente 450 millones de años. Forma de citar: Bueno Villegas, J. 2012. Diplópodos: los desconocidos formadores de suelo. CONABIO. Biodiversitas, 102:1-5 2 DiplópoDos los desconocidos formadores de suelo Los miriápodos son el ejemplo por excelencia de animales segmentados pues, de manera general, su cuerpo está conformado por la cabeza y el tronco compuesto de un número variable...
La presencia del ciempiés Scolopendra heros es registrada por primera vez para Yucatán, México, a partir de una muestra de ciempiés descubierta en la Colección Nacional de Arácnidos (CNAN), Instituto de Biología, Universidad Nacional... more
La presencia del ciempiés Scolopendra heros es registrada por primera vez para Yucatán, México, a partir de una muestra de ciempiés descubierta en la Colección Nacional de Arácnidos (CNAN), Instituto de Biología, Universidad Nacional Autónoma de México. Esta es la distribución más oriental de la especie para el país. También, se documenta la adición de una nueva localidad para el estado de Sonora.
Body size is a complex and important trait in animals, since it can influence their physiology, biotic interactions, behavior, fitness, and geographic distribution, and this trait is generally different between sexes, individuals,... more
Body size is a complex and important trait in animals, since it can influence their physiology, biotic interactions, behavior, fitness, and geographic distribution, and this trait is generally different between sexes, individuals, populations, and species. Millipede body size varies enormously, however, little is known about the factors that may explain this variability. In this study, we examined the relationship between millipede body size and four variables that have often been associated with arthropod body size: altitude, latitude, precipitation, and ambient temperature. Specifically, we studied the relationship between these factors and body size in species of Rhysodesmus (Polydesmida: Xystodemidae), a genus in which growth ends when individuals reach adulthood.
Millipedes live almost anywhere in the world except the Antarctica, from deserts to tropical forests. However, many factors can influence where millipedes are found; among these, food, temperature, and humidity have been shown to be... more
Millipedes live almost anywhere in the world except the Antarctica, from deserts to tropical forests. However, many factors can influence where millipedes are found; among these, food, temperature, and humidity have been shown to be important. In this study, we investigated whether these factors are related with millipede presence at a broad scale, as well as on a smaller scale. Specifically, we investigated refuge use by the millipede Rhysodesmus byersi (cattle manure, stones, logs, and leaf litter) in a pine-oak forest and adjacent grasslands, as well as the probable physicochemical factors involved (temperature, humidity, and food).
Nomenclatural discrepancies involving Diplopoda species described by González-Sponga from Venezuela are discussed and corrected. An emendation and subsequent spelling for the species Stemmiulus deantier González-Sponga, 2001 (Stemmiulida:... more
Nomenclatural discrepancies involving Diplopoda species described by González-Sponga from Venezuela are discussed and corrected. An emendation and subsequent spelling for the species Stemmiulus deantier González-Sponga, 2001 (Stemmiulida: Stemmiulidae) is proponed. Nine new combinations for the genus Mestosoma Silvestri, 1897 (Polydesmida: Paradoxosomatidae) are herein proposed: Mestosoma acariguensis (González-Sponga, 2004) comb. nov., Mestosoma brionensis (González-Sponga, 2004) comb. nov., Mestosoma casimiranus (González-Sponga, 2004) comb. nov., Mestosoma minaensis (González-Sponga, 2004) comb. nov., Mestosoma mirandensis (González-Sponga, 2004) comb. nov., Mestosoma monaguensis (González-Sponga, 2004) comb. nov., Mestosoma punctiaguda (González-Sponga, 2004) comb. nov., Mestosoma ramosa (González-Sponga, 2004) comb. nov., Mestosoma zeaensis (González-Sponga, 2004) comb. nov.
ABSTRACT AimWe analysed the effects of grazing on the diversity and structure of dung beetle communities to see whether the biogeographical and ecological contexts influence dung beetle responses. We hypothesized that the responses of... more
ABSTRACT AimWe analysed the effects of grazing on the diversity and structure of dung beetle communities to see whether the biogeographical and ecological contexts influence dung beetle responses. We hypothesized that the responses of dung beetle communities are modulated by both the ecological conditions resulting from the transformation of native vegetation into grazing areas, and the history of the species inhabiting different biogeographical provinces.LocationThe state of Hidalgo, in the Mexican Transition Zone, central Mexico.Methods We used a standardized hierarchical sampling procedure in three biogeographical provinces located in Hidalgo. Within each province, we identified the dominant vegetation types, and within these we identified the sites with native vegetation and those modified by grazing. The design included 800 baited pitfall traps, and allowed us to study the response of dung beetle communities with different biogeographical histories to ecological context.ResultsWe captured 8707 beetles belonging to 37 species and 17 genera in the subfamily Scarabaeinae. We found that grazing areas only had a negative effect on dung beetle diversity in tropical forest; conversely, in dry environments (pine–oak forest and xerophilous scrubland) diversity in grazing areas was higher than in the native vegetation sites. We did not detect a clear effect in cloud forest sites. Species turnover between the native vegetation and pastures was high locally, and low over larger spatial scales (vegetation type or biogeographical province). In all four vegetation types grazing was associated with differences in dung beetle community composition.Main conclusionsThe impact of grazing on dung beetle diversity is dependent to a considerable degree on the local ecological conditions and the biogeographical context that has shaped the composition of communities over time.
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" ABSTRACT: Communities of both transient and resident organisms, interacting in different ways, occur inside tanks (rosettes) of bromeliads. Abundance and composition of the communities differ seasonally. The objectives of this work... more
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ABSTRACT: Communities of both transient and resident organisms, interacting in different ways,
occur inside tanks (rosettes) of bromeliads. Abundance and composition of the communities differ
seasonally. The objectives of this work were to make an initial exploration of the arthropod fauna
associated with Tillandsia deppeana in order to obtain a preliminary species list, and to document the
abundance of organisms occurring in the rosettes. The arthropods were collected from four plants in
a fragmented mountain cloud forest in La Misión municipality, in the north of Hidalgo State, México.
A total of 375 arthropod specimens (249 adults and 126 juveniles) belonging to Arachnida, Chilopoda
and Hexapoda were obtained and they represent 10 orders, 15 families, and adults and juveniles cor-
respond to 23 and 15 morphospecies respectively. Veliidae (Hemiptera) had the highest number of
organisms, while Staphylinidae (Coleoptera) had the highest number of morphospecies. The dryoph-
thorid Metamasius callizona and the staphylinids Hesperus fasciatus and Scaphidium tzinti are
reported for the first time from Hidalgo State. In this work we report for the first time the chilopod
Scolopendra viridis occurring in an epiphytic bromeliad tank.""
In order to understand the evolutionary relationships among the species encompassed within the genus Sphaeriodesmus Peters, 1864, a cladistic analysis including 63 species was conducted. Ninety-five morphological characters were used for... more
In order to understand the evolutionary relationships among the species encompassed within the genus
Sphaeriodesmus Peters, 1864, a cladistic analysis including 63 species was conducted. Ninety-five morphological
characters were used for the phylogenetic reconstruction. The results suggested that the current composition of the
genus Sphaeriodesmus does not circumscribe a monophyletic group; instead, the genera Eusphaeriodesmus,
Colobodesmus, and Proeilodesmus are here synonymized under Sphaeriodesmus. Although raw morphological data
had suggested the genus Lophocyclus as the sister taxon of Sphaeriodesmus, the phylogenetic analysis under implied
weight identified the genus Cyphodesmus as the taxon most closely related to Sphaeriodesmus. Sphaeriodesmus isolatus
Chamberlin, 1940 is a subjective synonym of Sphaeriodesmus conformans Chamberlin, 1925. The putative subdivisions
previously proposed within Sphaeriodesmus do not hold as monophyletic either. Low stability was observed
concerning the higher-level phylogenetic relationships of Sphaeriodesmus. Sphaeriodesmus crucis (Loomis, 1974),
S. mecistonyx (Hoffman, 1990), and S. triramus (Kraus, 1954) are new combinations.
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