scholarly journals Efecto del sitio de procedencia sobre los atributos de las semillas de Cakile edentula (Brassicaceae), especie estabilizadora de duna costera

2019 ◽  
Vol 97 (1) ◽  
pp. 74 ◽  
Author(s):  
Ricardo Álvarez-Espino ◽  
Gabriela Mendoza-González ◽  
Candelaria Pérez-Martin ◽  
Xavier Chiappa-Carrara
Keyword(s):  
Moisture Content ◽  
Yucatan Peninsula ◽  
Seed Mass ◽  
Coastal Dune ◽  
Northern Coast ◽  
Seed Traits ◽  
Dune Vegetation ◽  
Yucatán Peninsula ◽  
Cakile Edentula ◽  
Study Species

<p><strong>Background</strong>: The morphological traits and germinative behavior of seeds vary within a species in response to multiple factors. Knowledge of this variability is important in understanding adaptation of species to environmental conditions.</p><p><strong>Question</strong>: Does the provenance of seeds of <em>Cakile edentula</em> affect seed traits? Does the climate of the sites of origin of the seeds influence their variability? Does the presence of light affect seed germination?</p><p><strong>Study species</strong>: <em>Cakile edentula</em><em> </em>(Bigelow) Hook.</p><p><strong>Study site</strong>: Coastal dune vegetation on the northern coast of the Yucatan Peninsula in August and October 2017.</p><p><strong>Methods</strong>: Seeds of <em>Cakile edentula</em> were collected in different locations on the northern coast of the Yucatan Peninsula. Under laboratory conditions it was assessed whether the origin of the seeds influenced some traits such as seed mass, moisture content, viability and germinative behavior.</p><p><strong>Results</strong>: Seed provenance significantly affected seed mass and moisture content in <em>C</em>. <em>edentula</em>. Moreover, the seeds of <em>C</em>. <em>edentula</em> collected from hot and humid sites germinate quickly and in greater proportion than the seeds from warm and dry sites of the Yucatan Peninsula. The seeds of <em>C</em>. <em>edentula</em> germinate preferably in darkness, regardless site of provenance.</p><strong>Conclusions</strong>: Some seed traits of <em>C</em>. <em>edentula</em> are affected by the site of provenance. Evidence suggests that climatic variation is likely to influence the initial characteristics of the life history in this coastal dune species.

scholarly journals Distribución potencial y conectividad del paisaje: criterios para reevaluar el grado de amenaza de Campylorhynchus yucatanicus (Aves: Troglodytidae)

2017 ◽  
Vol 65 (4) ◽  
pp. 1554
Author(s):  
Anay Serrano-Rodríguez ◽  
Griselda Escalona Segura ◽  
Alexis H. Plasencia Vázquez ◽  
Eduardo E. Iñigo Elias ◽  
Lorena Ruiz-Montoya
Keyword(s):  
Land Use ◽  
Urban Areas ◽  
Potential Distribution ◽  
Landscape Connectivity ◽  
Yucatan Peninsula ◽  
Distribution Model ◽  
Northern Coast ◽  
Dune Vegetation ◽  
Narrow Strip ◽  
Yucatán Peninsula

Geographic distribution and habitat quality are key criteria for assessing the degree of risk of species extinction threat. Campylorhynchus yucatanicus (Yucatán Wren, Troglodytidae) is an endemic bird of the Northern coast of the Yucatán Peninsula, Mexico, with a distribution restricted to a narrow strip of habitat, between Campeche and Yucatán states. Currently, the Yucatán coast has lost more than half of the coastal dune vegetation, and other habitats have been modified mainly because there is no urban development plan and the natural resources management is poor. These factors threaten C. yucatanicus, which is listed as a near threatened species by IUCN and as an endangered species by Mexican law NOM-059-2010. In this paper, C. yucatanicus´s potential distribution was modeled using 64 presence records from several sources (1960 y 2009), a set of climate variables, and a vegetation index layer of normalized difference (NDVI). To assess the degree of landscape connectivity we used a map of vegetation types and land use, distance to villages and paved roads. The potential distribution model showed an area of approximately 2 711 km2, which is 2 % of the total area of the Yucatán Peninsula distribution. In this area, only 27 % is protected by Biosphere Reserve category and only 10 % belong to core conservation areas, with land use restrictions and relatively effective protection. The populations from Ría Lagartos and Western Celestún regions appear to be the most isolated following the model of landscape connectivity. Landscape permeability among fragments of dune vegetation near the coast is low, mainly due to the distribution of urban areas. These results can be used to establish management strategies, and show that the species is in more delicate conditions than what it has been described by IUCN. We consider that C. yucatanicus should be given endangered category by IUCN, because of their distribution and the context of the current landscape connectivity.

scholarly journals Reproductive biology of the southern pufferfish, Sphoeroides nephelus (Actinopterygii: Tetraodontiformes: Tetraodontidae), in the northern coast off the Yucatan Peninsula, Mexico

2019 ◽  
Vol 49 (2) ◽  
pp. 133-146
Author(s):  
Jorge Peniche Perez ◽  
Carlos Gonzalez Salas ◽  
Harold Villegas Hernández ◽  
Raul Diaz Gamboa ◽  
Alfonso Aguilar Perera ◽  
...  
Keyword(s):  
Reproductive Biology ◽  
Yucatan Peninsula ◽  
Northern Coast ◽  
Yucatán Peninsula

Length-weight relationships of three fish species collected by recreational fishing in the northern coast of Yucatan Peninsula, Mexico

2017 ◽  
Vol 33 (6) ◽  
pp. 1249-1250 ◽  
Author(s):  
G. Poot-López ◽  
R. Díaz-Gamboa ◽  
C. González-Salas ◽  
S. Guillén-Hernández
Keyword(s):  
Fish Species ◽  
Yucatan Peninsula ◽  
Recreational Fishing ◽  
Northern Coast ◽  
Yucatán Peninsula

Longshore Sediment Transport on the Northern Coast of the Yucatan Peninsula

2012 ◽  
Vol 285 ◽  
pp. 1404-1417 ◽  
Author(s):  
Christian M. Appendini ◽  
Paulo Salles ◽  
E. Tonatiuh Mendoza ◽  
José López ◽  
Alec Torres-Freyermuth
Keyword(s):  
Sediment Transport ◽  
Yucatan Peninsula ◽  
Northern Coast ◽  
Yucatán Peninsula ◽  
Longshore Sediment Transport

scholarly journals Análisis de la forma de los otolitos como herramienta para la discriminación de la población del stock ( Haemulon Plumieri ) blanco en la costa norte de la Península de Yucatán, México

2012 ◽  
Vol 3 ◽  
pp. 157 ◽  
Author(s):  
Christina Treinen-Crespo ◽  
Harold Villegas-Hernández ◽  
Sergio Guillén-Hernández ◽  
Miguel Ángel Ruiz-Zárate ◽  
Carlos González-Salas
Keyword(s):  
Population Structure ◽  
Shape Analysis ◽  
Yucatan Peninsula ◽  
Pairwise Comparisons ◽  
Fourier Descriptors ◽  
Northern Coast ◽  
Otolith Shape ◽  
Structured Population ◽  
Yucatán Peninsula ◽  
Elliptic Fourier Descriptors

In this study, the population structure of the white grunt (Haemulon plumieri) from the northern coast of the Yucatan Peninsula was determined through an otolith shape analysis based on the samples collected in three locations: Celestún (N 20°49’,W 90°25’), Dzilam (N 21°23’, W 88°54’) and Cancún (N 21°21’,W 86°52’). The otolith outline was based on the elliptic Fourier descriptors, which indicated that the H. plumieri population in the northern coast of the Yucatan Peninsula is composed of three geographically delimited units (Celestún, Dzilam, and Cancún). Significant differences were observed in mean otolith shapes among all samples (PERMANOVA; F2, 99 = 11.20, P = 0.0002), and the subsequent pairwise comparisons showed that all samples were significantly differently from each other. Samples do not belong to a unique white grunt population, and results suggest that they might represent a structured population along the northern coast of the Yucatan Peninsula. En este estudio, la estructura de la población del ronco blanco (Haemulon plumieri) de la costa norte de la Península de Yucatán fue determinada a través del análisis de la forma del otolito, sobre la base de las muestras recolectadas en tres localidades: Celestún (N 20°49’, W 90°25’), Dzilam (N 21°23’, W 88°54’) y Cancún (N 21° 21’, O 86° 52’). El análisis del contorno de los otolitos se basó en los descriptores elípticos de Fourier, cuyo enfoque indicó que la población de H. plumieri en la costa norte de la Península de Yucatán se compone al menos de tres unidades delimitadas geográficamente (Celestún, Dzilam y Cancún). Se observaron diferencias significativas en la forma del otolito entre todas las muestras (PERMANOVA, F2, 99 = 11.20, P = 0.0002) y las comparaciones por pares posteriores indicaron que todas las muestras fueron significativamente diferentes una de otra. Al parecer, las muestras no pertenecen a una única población, y los resultados sugieren que podría representar una población bien estructurada a lo largo de la costa norte de la Península de Yucatán.

scholarly journals Population differentiation in Haemulon plumieri juveniles across the northern coast of the Yucatan Peninsula

2014 ◽  
Vol 20 (2) ◽  
pp. 129-137 ◽  
Author(s):  
H Villegas-Hernández ◽  
R Rodríguez-Canul ◽  
S Guillén-Hernández ◽  
R Zamora-Bustillos ◽  
C González-Salas
Keyword(s):  
Population Differentiation ◽  
Yucatan Peninsula ◽  
Northern Coast ◽  
Yucatán Peninsula

scholarly journals Physicochemical Properties of Melipona beecheii Honey of the Yucatan Peninsula

2015 ◽  
Vol 4 (5) ◽  
pp. 25 ◽  
Author(s):  
Victor M. Moo-Huchin ◽  
Gustavo A. Gonzalez-Aguilar ◽  
Jose D. Lira-Maas ◽  
Emilio Perez-Pacheco ◽  
Raciel Estrada-Leon ◽  
...  
Keyword(s):  
Quality Control ◽  
Moisture Content ◽  
Yucatan Peninsula ◽  
Physicochemical Characterization ◽  
Quality Criteria ◽  
Physicochemical Characteristics ◽  
Soluble Solids ◽  
Floral Resources ◽  
Melipona Beecheii ◽  
Yucatán Peninsula

<p>The knowledge regarding the physicochemical characteristics of the honey produced by stingless bees is still limited, mainly due to the high diversity of the floral resources and the low production that is inherent to these species. This manuscript describes the physicochemical characterization of 27 honey samples produced by <em>Melipona beecheii, </em>from the Yucatan Peninsula, Mexico. The objective of this study was to contribute to the establishment of standards for quality control. The following parameters were evaluated in the honey samples: reducing sugars, moisture content, acidity, pH, hydroxymethylfurfural (HMF), ash, soluble solids, formol index, proline and color. Most of physico-chemical parameters fulfilled the quality criteria established by the International Legislation for Apis honey, with the exception of moisture content, which presented higher values; for that, the results indicate that the international standard procedures are not completing adequate for all the parameters analyzed on <em>Apis mellifera</em> honey and therefore is need establish a suitable standard of quality control for honey from <em>Melipona</em>.<em> </em></p>

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