The Huatulco Bays have a great variety of environments and habitats, and there are organisms, which have been few studied. In this respect, they are few studies on the community of fish that inhabit these subsystems. In the present study, the composition, diversity, distribution and abundance of fishes were evaluated...
In the present study the diel and seasonal variations of the total fish abundance (number and weight), community parameters (species diversity, richness, and evenness), multivariate changes in species composition of the fish community, and the influence that exert on them the environmental conditions, were analyzed in the Pueblo Viejo Lagoon,...
Mexico is a country which natural wealth is its biodiversity; every ecosystem provides of countless landscapes to the region. Is a country of contrasts, a place where nature recreates the most fanciful colours and shapes according to climate, flora, fauna and territory in which are founded. This biodiversity allowed cultural...
Los estudios de comportamiento de las especies nos proporcionan información valiosa acerca de los requerimientos alimenticios de cada individuo y su selección de hábitat. La familia Tyrannidae es exclusiva del continente americano y se encuentra ampliamente distribuida. Todos los miembros de este grupo se caracterizan por utilizar la caza aérea...
Spatially, only dissolved oxygen showed significant differences between two kinds of environments, being greater in the submerged vegetation habitat. Similarly, on diel scale the environmental variables tended to show no significant differences among hours. By contrast, seasonally all environmental variables showed significant differences among months, in both type of habitats....
Terminos Lagoon is a protected area in Campeche, México. This region has economical, social and scientific importance because it has high level of biodiversity, abundance of economic resources, fisheries activities focused mainly on shrimp, food produccion by agriculture, oil industry (exploration and explotation) and aquaculture initiatives. The concern about the...
This thesis is a contribution to the systematics of the Prorocentrum genus from two different but complementary approaches: The morphometric analysis of morphological characters and the phylogenetic analysis of molecular characters. The first part of the thesis consists of the morphometrical analysis of several populations of P. micans, P. gracile...
Con la finalidad de obtener información de la distribución, abundancia, edad crecimiento y reproducción de la lebrancha, Mugil curema, en la Laguna de Pueblo Viejo, Veracruz, se efectuaron muestreos bimestrales, durante un año, con recolectas cada dos horas en 12 ciclos nictímeros, en dos diferentes tipos de hábitat, uno con...
Ariocarpus kotschoubeyanus (Lem.) K. Schum., is a threatened and endemic species of Mexico. Features life story of Ariocarpus kotschoubeyanus are presented from a demographic and reproductive view this work. In the population Barrio Don Lucas, the population density was 0.03 ind/m² , while the density in the study plots was...