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... The history and application of the name chia and its scientific equivalent, Salvia hispanica, are outlined. The relationship of S. hispanica with other species known as chia is discussed including those within the genus Salvia and those without. Its native distribution and habitat are described. Chia was an important crop in Aztec society and the seeds had a wide range of uses beyond their use as ...
Bacillariophyceae; Copepoda; Cyclotella; Monoraphidium; adults; air; air temperature; altitude; biomass; climate change; community structure; lakes; limnology; phytoplankton; water temperature; zooplankton; Mexico
Abstract:
... The present long-term (1993–2013) study was aimed at identifying the effects of global change on the environmental characteristics and the plankton community of the tropical, high-altitude Lake Alchichica, Puebla, Mexico. We found no statistically significant increasing trend in air temperature, but an increase from 2002 to 2013, and interannual variability in the meteorological variables. Accordi ...
... Ten years ago, we started a project at the National Autonomous University of Mexico with the purpose of building custom-made operant conditioning chambers that could be used in research and laboratory courses. The focus was to reduce the cost and improve the flexibility of operant chambers by integrating advances in electronics and manufacturing processes such as 3D printing and laser-cutting tech ...
DNA barcoding; Neogene period; Stenopelmatus; geographical distribution; invertebrates; loci; mitochondria; mitochondrial DNA; phylogeny; phylogeography; species richness; Canada; Central America; Ecuador; Mexico
Abstract:
... The Jerusalem cricket subfamily Stenopelmatinae is distributed from south-western Canada through the western half of the United States to as far south as Ecuador. Recently, the generic classification of this subfamily was updated to contain two genera, the western North American Ammopelmatus , and the Mexican, and central and northern South American Stenopelmatus . The taxonomy of the latter genus ...
... ?AbstractHolothuria (Lessonothuria) coronatasp. nov. occurs in depths of 5–10 m off the Mexican Pacific coast at the Revillagigedo Archipelago. It is clearly distinguished from other species of the subgenus by the presence of tables with a circular disc and big peripheral holes, sometimes with a second series of peripheral ones, a disc with a spiny or smooth rim and a spire crossed by a single cro ...
... Reconstructing paleoenvironments on Mexico's Pacific coast is crucial to determine past climate conditions and natural hazard periodicities, vital for predicting future activities. Two sediment cores extracted from Laguna Nuxco, a coastal lagoon in Guerrero, were analyzed to provide a 4000-year paleoenvironmental record. Sediments dominated by shelly clay with low water and organic content, high c ...
... Dickinson Park is a difficult-to-access remote subalpine parkland in the Shoshone National Forest of Wyoming; it is located on the east slope of the Wind River Range (Central Rocky Mountains), immediately south of the Wind River Indian Reservation. The area has never been previously visited by bryologists. As a result of a bryological inventory conducted in the Park in 2012 (and subsequent laborat ...
Tania Martínez-León; Ricardo Clark-Tapia; Jorge E. Campos; Luz Isela Peinado-Guevara; Samuel Campista-León; Francisco Molina-Freaner; Nelly Pacheco-Cruz; Gabriel González-Adame; Juan José Von Thaden Ugalde; Cecilia Alfonso-Corrado
... Genetic studies in rare species are important to determine their patterns of genetic diversity among populations and implement conservation plans aimed to reduce extinction risks. Pachyphytum caesium is an endemic species with extremely small populations in central Mexico. This work analyzes the diversity and genetic structure of Pachyphytum cesium (Crassulaceae) to change the conservation status ...
... In this article, I discuss how sky mapping was carried out among the Pa Ipai peoples from Baja California in Mexico. This mapping was elaborated through an interdisciplinary study that combined cybercartography, ethnography, cultural astronomy, semiotics, and collaborative work. The central argument of the article focuses on how the cybercartographic sky atlas of the Pa Ipai people responded to th ...
... Alcidae (auks) is a family of wing-propelled diving Charadriiformes, which includes 24 extant species distributed in the Holarctic region. Here, we describe a fossil humerus of Pliocene Alcidae (approximately 4.5–3.5 Ma) from the Fukagawa Group in Hokkaido, Japan. Although this specimen is incomplete and the diagnostic characters of the specific genus are lacking, it shares similar characteristics ...
... Norape sorpresa sp. nov. Wagner & Matson occurs from extreme southeastern Arizona south into Sonora, Mexico. Beyond differences in leg color, adult external features do not allow ready separation of this species from the other two white Norape that occur north of Mexico. However, genital features, COI barcodes, and larval characters distinguish the three taxa. The adult and larval stages and male ...
... We describe a new species of Knob-scaled Lizards of the genus Xenosaurus from the Sierra de Juárez of Oaxaca, México. Although this new species was identified as a distinct, undescribed lineage (and sister taxon to X. grandis) by previous molecular phylogenetic studies of the genus, we documented that it also differs from all of its congeners by a unique combination of scalation and color-pattern ...
... A new species, Ischnus mesonotator sp. n., is described from Mexico; it differs from the congeners in an unusual white pattern of the mesonotum as well as in an unusual combination of predominantly white coloration of pronotum and mesopleuron with entirely orange metapleuron, propodeum, and metasoma. ...
... Fisheries in Cuitzeo, the second largest Mexican lake, used to take place on the permanent freshwater East and Central Basins as opposed to the temporal, saline, and initially thought barren West Basin. The 1980 fisheries collapse forced fishers to look for non-conventional fishing products elsewhere in the lake. The West Basin’s temporal, saline-alkaline, and shallow water provides exceptional ha ...
DNA barcoding; Ishige foliacea; Japan; algae; epiphytes; flora; herbaria; lectotypes; new species; Korean Peninsula; Mexico
Abstract:
... Three species of the genus Ishige (Phaeophyceae, Ishigeaceae) are known from Korea, Japan and Mexico; they include Ishige foliacea Okamura, I. okamurae Yendo and I. sinicola (Setchell and N.L. Gardner) Chihara. Two species, I. foliacea and I. okamurae, are present in the algal flora of Korea and Japan. The original description of I. okamurae defined two forms of branches, filiform and foliose, but ...
Walter A. Rubio-Aragón; Carlos A. López-Orona; Guadalupe A. López-Urquídez; María A. Payán-Arzapalo; Abraham Cruz-Mendivil; Sergio Hernández-Verdugo; Jesús E. Retes-Manjarrez
... The objectives of this study were to develop a rapid screening method for resistance to Anthonomus eugenii Cano (Coleoptera: Curculionidae) in pepper by assessing insect mortality and leaf consumption in seedlings as resistance traits, and analyze their interaction with leaf morphological parameters under greenhouse conditions. Seedlings were grown from seeds harvested from fruits collected from 2 ...
Chusquea; Neotropics; Serpentes; bamboos; complement; leaves; microstructure; new species; taxonomic keys; Andes region; Argentina; Caribbean; Chile; Colombia; Mexico; Peru
Abstract:
... The Neotropical woody bamboo genus Chusquea consists of 193 currently described species ranging from central Mexico and the Caribbean to Chile and Argentina, primarily in montane habitats. The six previously described species of Chusquea subg. Chusquea sect. Serpentes are scandent in habit, with infravaginal branching, few subsidiary buds per complement, and foliage leaves that tend to be relative ...
... Opuntia spp. are cacti with high ecological, economic and conservation interest in semiarid environments, particularly in Mexico. We conducted a systematic search of the existing peer-reviewed literature about the state of knowledge of pollination ecology on these plants. We documented the most studied Opuntia species worldwide with an emphasis on Mexico. We found that only 15% of Opuntia species ...
... Large-scale optical sensing and precise, rapid assessment of seismic building damage in urban communities are increasingly demanded in disaster prevention and reduction. The common method is to train a convolutional neural network (CNN) in a pixel-level semantic segmentation approach and does not fully consider the characteristics of the assessment objectives. This study developed a machine-learni ...
Bealia; Muhlenbergia; Pleistocene epoch; Pliocene epoch; geographical distribution; introns; phylogeny; probability; Central Asia; Mexico; South America
Abstract:
... A phylogeny based on the analysis of six DNA sequence markers (ITS, ndhA intron, rpl32‐trnL, rps3, rps16 intron, and rps16‐trnK) is used to infer ancestral areas and divergence times, and reconstruct the biogeographical history and evolution of 150 of the 183 (82%) species of Muhlenbergia. Our results suggest that the genus originated 9.3 mya in the Sierra Madre (Occidental and Oriental) in Mexico ...