scholarly journals Calcification of the main reef-building coral species on the Pacific coast of southern Mexico

2016 ◽  
Vol 42 (3) ◽  
pp. 209-225 ◽  
Author(s):  
Francisco Medellin-Maldonado
Keyword(s):  
Pacific Coast ◽  
Coral Species ◽  
Southern Mexico ◽  
The Pacific

scholarly journals Assessment of tsunami hazards for the Central American Pacific coast from southern Mexico to northern Peru

2014 ◽  
Vol 14 (7) ◽  
pp. 1889-1903 ◽  
Author(s):  
B. Brizuela ◽  
A. Armigliato ◽  
S. Tinti
Keyword(s):  
Central America ◽  
Pacific Coast ◽  
Probabilistic Approach ◽  
Central American ◽  
Southern Mexico ◽  
Extended Region ◽  
The Pacific ◽  
Northern Peru ◽  
Run Up ◽  
Tsunami Run Up

Abstract. Central America (CA), from Guatemala to Panama, has been struck by at least 52 tsunamis between 1539 and 2013, and in the extended region from Mexico to northern Peru (denoted as ECA, Extended Central America in this paper) the number of recorded tsunamis in the same time span is more than 100, most of which were triggered by earthquakes located in the Middle American Trench that runs parallel to the Pacific coast. The most severe event in the catalogue is the tsunami that occurred on 2 September 1992 off Nicaragua, with run-up measured in the range of 5–10 m in several places along the Nicaraguan coast. The aim of this paper is to assess the tsunami hazard on the Pacific coast of this extended region, and to this purpose a hybrid probabilistic-deterministic analysis is performed, that is adequate for tsunamis generated by earthquakes. More specifically, the probabilistic approach is used to compute the Gutenberg–Richter coefficients of the main seismic tsunamigenic zones of the area and to estimate the annual rate of occurrence of tsunamigenic earthquakes and their corresponding return period. The output of the probabilistic part of the method is taken as input by the deterministic part, which is applied to calculate the tsunami run-up distribution along the coast.

Early Formative Pottery Production, Mobility, and Exchange on the Pacific Coast of Southern Mexico

2011 ◽  
Vol 6 (3) ◽  
pp. 333-350 ◽  
Author(s):  
Josue Gomez ◽  
Douglas J. Kennett ◽  
Hector Neff ◽  
Michael D. Glascock ◽  
Barbara Voorhies
Keyword(s):  
Pacific Coast ◽  
Pottery Production ◽  
Southern Mexico ◽  
The Pacific ◽  
Early Formative

scholarly journals Phylogeography and morphometric variation in the Cinnamon Hummingbird complex: Amazilia rutila (Aves: Trochilidae)

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Melisa Vázquez-López ◽  
Nandadevi Córtes-Rodríguez ◽  
Sahid M. Robles-Bello ◽  
Alfredo Bueno-Hernández ◽  
Luz E. Zamudio-Beltrán ◽  
...  
Keyword(s):  
Central America ◽  
Environmental Conditions ◽  
Pacific Coast ◽  
Yucatan Peninsula ◽  
Southern Mexico ◽  
Morphometric Variation ◽  
Divergence Time Estimates ◽  
Yucatán Peninsula ◽  
The Pacific ◽  
Over Time

Abstract Background The Mesoamerican dominion is a biogeographic area of great interest due to its complex topography and distinctive climatic history. This area has a large diversity of habitats, including tropical deciduous forests, which house a large number of endemic species. Here, we assess phylogeographic pattern, genetic and morphometric variation in the Cinnamon Hummingbird complex Amazilia rutila, which prefers habitats in this region. This resident species is distributed along the Pacific coast from Sinaloa—including the Tres Marías Islands in Mexico to Costa Rica, and from the coastal plain of the Yucatán Peninsula of Mexico south to Belize. Methods We obtained genetic data from 85 samples of A. rutila, using 4 different molecular markers (mtDNA: ND2, COI; nDNA: ODC, MUSK) on which we performed analyses of population structure (median-joining network, STRUCTURE, FST, AMOVA), Bayesian and Maximum Likelihood phylogenetic analyses, and divergence time estimates. In order to evaluate the historic suitability of environmental conditions, we constructed projection models using past scenarios (Pleistocene periods), and conducted Bayesian Skyline Plots (BSP) to visualize changes in population sizes over time. To analyze morphometric variation, we took measurements of 5 morphological traits from 210 study skins. We tested for differences between sexes, differences among geographic groups (defined based on genetic results), and used PCA to examine the variation in multivariate space. Results Using mtDNA, we recovered four main geographic groups: the Pacific coast, the Tres Marías Islands, the Chiapas region, and the Yucatán Peninsula together with Central America. These same groups were recovered by the phylogenetic results based on the multilocus dataset. Demography based on BSP results showed constant population size over time throughout the A. rutila complex and within each geographic group. Ecological niche model projections onto past scenarios revealed no drastic changes in suitable conditions, but revealed some possible refuges. Morphometric results showed minor sexual dimorphism in this species and statistically significant differences between geographic groups. The Tres Marías Islands population was the most differentiated, having larger body size than the remaining groups. Conclusions The best supported evolutionary hypothesis of diversification within this group corresponds to geographic isolation (limited gene flow), differences in current environmental conditions, and historical habitat fragmentation promoted by past events (Pleistocene refugia). Four well-defined clades comprise the A. rutila complex, and we assess the importance of a taxonomic reevaluation. Our data suggest that both of A. r. graysoni (Tres Marías Islands) and A. r. rutila (Pacific coast) should be considered full species. The other two strongly supported clades are: (a) the Chiapas group (southern Mexico), and (b) the populations from Yucatán Peninsula and Central America. These clades belong to the corallirostris taxon, which needs to be split and properly named.

scholarly journals West Nile Virus Survey of Birds, Horses, and Mosquitoes of the Pacific Coast, Southern Mexico

2013 ◽  
Vol 38 (2) ◽  
pp. 231-240 ◽  
Author(s):  
Antonio J. Cortés-Guzmán ◽  
Rosa María Sánchez-Casas ◽  
Luis A. Ibarra-Juárez ◽  
Aldo I. Ortega-Morales ◽  
Julián E. Garcia-Rejón ◽  
...  
Keyword(s):  
West Nile Virus ◽  
Pacific Coast ◽  
West Nile ◽  
Southern Mexico ◽  
The Pacific

scholarly journals Origin and diet of inhabitants of the Pacific Coast of Southern Mexico during the Classic Period - Sr, C and N isotopes

2019 ◽  
Vol 27 ◽  
pp. 101981
Author(s):  
Virginie Renson ◽  
Marx Navarro-Castillo ◽  
Andrea Cucina ◽  
Brendan J. Culleton ◽  
Douglas J. Kennett ◽  
...  
Keyword(s):  
Pacific Coast ◽  
Classic Period ◽  
Southern Mexico ◽  
The Pacific ◽  
N Isotopes ◽  
C And N

scholarly journals New records of the drywood termite, Incisitermes platycephalus (Light, 1933) (Isoptera, Kalotermitidae), from Central America and senior synonym of I. nigritus (Snyder, 1946)

Check List ◽  
2020 ◽  
Vol 16 (2) ◽  
pp. 501-505
Author(s):  
Rudolf H. Scheffrahn
Keyword(s):  
Central America ◽  
Anterior Margin ◽  
New World ◽  
Pacific Coast ◽  
New Records ◽  
Head Capsule ◽  
Southern Mexico ◽  
World Species ◽  
The Pacific ◽  
Senior Synonym

New World species of the genus Incisitermes Krishna, 1961 range from California to Peru.  The soldier of this genus is notable for the incised anterior margin of the pronotum and the elongated third antennal article.  I report the broad occurrence of Incisitermes platycephalus (Light, 1933) from extreme southern Mexico to the Pacific coast of Nicaragua. Incisitermes nigritus (Snyder, 1946) from Guatemala is a junior synonym of I. platycephalus.  Among Incisitermes, I.  platycephalus is characterized by its small size, dark imago, and dorsoventrally compressed soldier head capsule.

Pre-pottery farmers on the Pacific coast of southern Mexico

2010 ◽  
Vol 37 (12) ◽  
pp. 3401-3411 ◽  
Author(s):  
Douglas J. Kennett ◽  
Dolores R. Piperno ◽  
John G. Jones ◽  
Hector Neff ◽  
Barbara Voorhies ◽  
...  
Keyword(s):  
Pacific Coast ◽  
Southern Mexico ◽  
The Pacific

scholarly journals Positively Charged Amino Acid Substitutions in the E2 Envelope Glycoprotein Are Associated with the Emergence of Venezuelan Equine Encephalitis Virus

2002 ◽  
Vol 76 (4) ◽  
pp. 1718-1730 ◽  
Author(s):  
Aaron C. Brault ◽  
Ann M. Powers ◽  
Edward C. Holmes ◽  
C. H. Woelk ◽  
Scott C. Weaver
Keyword(s):  
Amino Acid ◽  
Envelope Glycoprotein ◽  
Convergent Evolution ◽  
Pacific Coast ◽  
Phenotypic Change ◽  
Amino Acid Substitutions ◽  
Venezuelan Equine Encephalitis ◽  
Southern Mexico ◽  
The Pacific ◽  
Mexican Strains

ABSTRACT Epidemic-epizootic Venezuelan equine encephalitis (VEE) viruses (VEEV) have emerged repeatedly via convergent evolution from enzootic predecessors. However, previous sequence analyses have failed to identify common sets of nucleotide or amino acid substitutions associated with all emaergence events. During 1993 and 1996, VEEV subtype IE epizootics occurred on the Pacific Coast of the states of Chiapas and Oaxaca in southern Mexico. Like other epizootic VEEV strains, when inoculated into guinea pigs and mice, the Mexican isolates were no more virulent than closely related enzootic strains, complicating genetic studies of VEE emergence. Complete genomic sequences of 4 of the Mexican strains were determined and compared to those of closely related enzootic subtype IE isolates from Guatemala. The epizootic viruses were less than 2% different at the nucleotide sequence level, and phylogenetic relationships confirmed that the equine-virulent Mexican strains probably evolved from enzootic progenitors on the Pacific Coast of Mexico or Guatemala. Of 35 amino acids that varied among the Guatemalan and Mexican isolates, only 8 were predicted phylogenetically to have accompanied the phenotypic change. One mutation at position 117 of the E2 envelope glycoprotein, involving replacement of Glu by Lys, resulted in a small-plaque phenotype characteristic of epizootic VEEV strains. Analysis of additional E2 sequences from representative enzootic and epizootic VEEV isolates implicated similar surface charge changes in the emergence of previous South American epizootic phenotypes, indicating that E2 mutations are probably important determinants of the equine-virulent phenotype and of VEE emergence. Maximum-likelihood analysis indicated that one change at E2 position 213 has been influenced by positive selection and convergent evolution of the epizootic phenotype.

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