Esperanza Ortiz-Ordóñez

Publications14
h-index5
Citations97
Highly Influential Citations2
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Effect of Yerbimat Herbicide on Lipid Peroxidation, Catalase Activity, and Histological Damage in Gills and Liver of the Freshwater Fish Goodea Atripinnis
The use of herbicides for agricultural and aquatic weed control has increased worldwide. These substances are potentially toxic pollutants because they induce the production of reactive oxygen… Expand
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Populations of the Butterfly Goodeid (Ameca splendens) in the Upper Rio Ameca Basin, Mexico
ABSTRACT The endangered endemic fish Ameca splendens was surveyed monthly from June 2001 to May 2002 at two sites in the upper Rio Ameca basin. Both populations demonstrated two annual reproduction… Expand
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The role of vitellogenin during gestation of Girardinichthys viviparus and Ameca splendens; two goodeid fish with matrotrophic viviparity.
Goodeid fish have matrotrophic viviparity, and unlike lecitotrophic fish, yolk loss forces the female to provide the nutritional requirements for embryonic development. Vitellogenin (VTG) is the yolk… Expand
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Liver histological changes and lipid peroxidation in the amphibian Ambystoma mexicanum induced by sediment elutriates from the Lake Xochimilco.
Lacustrine sediments accumulate pollutants that input from the lake watershed and can be released to the water column by sediment resuspension; thus, pollutants can change their bioavailability and… Expand
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ULTRASTRUCTURE OF SPERMATOGENESIS IN THE WHITE CLAM CHIONE CALIFORNIENSIS (BRODERIP, 1835) (MOLLUSCA: PELECYPODA)
Abstract Although studies of this species have focused on its reproductive cycle, there is no literature available on the ultra-structure of its germ cells. This study consequently aims to describe… Expand
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Reproductive cycle by histological characterization of the ovary in the butterfly goodeid Ameca splendens from the upper Río Ameca Basin, Mexico
Summary The ovarian cycle was studied in Ameca splendens, a viviparous fish native to western Mexico. Two wild populations living in environments with differential conditions (a small pond… Expand
  • 9
Liver Histopatology, Lipidperoxidation and Somatic Indices of Fulica americana in Xochimilco (Urban) and Tecocomulco (Rural) Wetlands in the Mexico Basin
Los humedales son cuerpos de agua muy productivos y son refugio para aves migratorias; sin embargo, continuamente reciben contaminantes que ejercen danos en los organismos acuaticos. El objetivo del… Expand
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Estudio Histológico de Boca, Esófago, Estómago e Intestino de Polystira albida (Gastropoda: Turridae)
En la presente investigacion se realizo la caracterizacion histologica del tubo digestivo de Polystira albida (Toxoglossa:Turridae) mediante microscopia optica, utilizando ejemplares colectados en la… Expand
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Biología Reproductiva de Mytilopsis leucophaeata (Conrad, 1831) (Bivalvia: Dreissenidae) de la Laguna de Tampamachoco, Túxpam-Veracruz
Se caracterizo el ciclo reproductivo de Mytilopsis leucophaeata (Conrad, 1831) en organismos colectados mensualmente durante un ciclo anual en la laguna de Tampamachoco, Tuxpam, Veracruz, que se… Expand
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Biological Responses of the American Coot (Fulica americana), in wetlands with contrasting environmental conditions (Basin of México)
ABSTRACT Wetland ecosystems are subject to severe impacts (physical and chemical) and to the input of various xenobiotics that provoke toxicological consequences. Waterbirds are potential sentinel… Expand
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