Fernando Clemente-Sánchez

Colegio de Postgraduados | CP · Department of Animal Husbandry

En la actualidad, estamos presenciando una crisis ambiental en la cual la pérdida de biodiversidad sucede a una tasa sin igual a nivel mundial

Objective: To test whether HTF (Human Tubal Fluid) is capable of protecting goat sperm cells increasing the semen m Objective: To determine if HTF (Human Tubal Fluid) can protect buck sperm cells, increasing semen motility when used by itself or combined with the Andromed® commercial extender. Design/Methodology/Approach: The semen of eight bucks o...

The American badger o tlalcoyote ( Taxidea taxus berlandieri ) is a subspecies inhabits in north-central Mexico; its population and conservation status are unknown and there is no precise information about its habitat. The objectives of our study were to model the ecological niche suitability for T. t. berlandieri , to estimate the population densi...

The American badger o tlalcoyote ( Taxidea taxus berlandieri ) is a subspecies that inhabits north-central Mexico; its population and conservation status are unknown, and there is no precise information about its habitat. The objectives of our study were to model the ecological niche suitability for T. t. berlandieri , to estimate the population de...

Procedimiento para evalación de semen

PROBLEMA Las Unidades de Manejo para la Conservación de Vida Silvestre (UMA) son sistemas que mediante planes de manejo de los recursos naturales promueven actividades alternativas de producción compatibles con el cuidado del ambiente, y se le da seguimiento permanente al estado del hábitat, poblaciones y ejemplares. En las Unidades de Manejo extra...

El Gobierno Federal Mexicano, sustenta en la Ley General de Vida Silvestre el aprovechamiento de la fauna en el territorio mexicano a través del registro de predios bajo la denominación de Unidades de Manejo para el Aprovechamiento Sustentable de la Vida Silvestre (UMA). Alrededor de 12,570 UMAs están registradas

Objective: To describe the involvement of the interferon tau gene in the maternal recognition of pregnancy in sheep. Design/Methodology/Approach: A search and analysis of the scientific documents retrieved from the Web of Science and Scopus databases related to the functions of the interferon tau gene in the maternal recognition of pregnancy in she...

Objective: To develop three models in order to estimate the defecation rate ofwhite-tailed deer (Odocoileus virginianus) according to the season of the year,content of neutral detergent fiber (NDF), and acid detergent fiber (ADF) in feces.Design / methodology / approach: Nine captive adult deer were assigned tothree levels of dietary fiber. Fecal g...

Objective: To estimate the population of wild turkey (Meleagris gallopavo, mexicana) and its density in ecosystems of its distribution.Design / methodology / approach: A method based on random sampling with a population density estimator was designed. The design was based on the observation of wild turkeys that go to attraction sites (feedlots) of...

Chapter on Ducks and Geese in Mexico

Objetivo: Determinar el impacto econmóico mediante el análisis costo-beneficio del turismo cinegético en Unidades de Manejo para el Aprovechamiento Sustentable de la Vida Silvestre (UMA) de tipo extractivo dentro del Área Natural Protegida Sierra Fría, en el estado de Aguascalientes. Diseño/metodologia/aproximación: Se diseñó un instrumento (cuesti...

Siphonaptera are hematophage parasite vectors of both human and animal diseases. We aimed to identify ectoparasites parasitizing a coyote population (Canis latrans) in the northwest region of the Flora and Fauna Protection Area Médanos de Samalayuca, Chihuahua, Mexico. We captured 21 coyotes (15 males and 6 females) during the summer and winter of...

El búho manchado (Strix occidentalis lucida) es una especie amenazada y poco estudiada en México. En este estudio caracterizamos el hábitat de sus sitios de descanso (reproductivos y no reproductivos) y aleatorios (sitios en donde la especie se distribuye aleatoriamente sin un patrón) en Aguascalientes, Durango y Zacatecas e identificamos las varia...

El ganso de collar del Pacífico (B. b. nigricans) está catalogado por el Gobierno Mexicano dentro de la NOM-059-SEMARNAT-2010 como una especie amenazada (A), es decir, una especie en peligro de desaparecer en el corto o mediano plazo, si siguen operando los factores que inciden negativamente sobre la salud de sus poblaciones y hábitat del cual depe...

Hares and rabbits have an ecological, social and economic importance in the center-north region of México. The objective was to evaluate the abundance and distribution of these species through signs (fecal groups), and their relationship with the habitat conditions. The study area covered 86,492.6 km2; 238 sampling sites were selected randomly wher...

During the reproductive season of the white-tailed deer, 36 diluted semen samples from deer were evaluated before freezing, and at the time of thawing. The samples were obtained by electro ejaculation from three sedated deer with a mixture of Zoletil® and xylazine hydrochloride. Samples were diluted with three commercial extenders Biladyl®, Trilady...

With the objective of analyzing the contributions made by applied phylogeography to the conservation of wild fauna, its conceptual bases, principles and objectives are described through the review of various phylogeographic studies on deer, jaguars, monkeys, bats, crocodiles and insects, showing the most important results in terms of haplotypic and...

INTRODUCCIÓN: La rata magueyera es una especie clave para diversos procesos ecológicos. Es considerada un manjar y ha sido aprovechada sin control. Este trabajo se realizó con la finalidad de determinar su distribución potencial y evaluar su densidad con base en las madrigueras, así como las variables de mayor influencia. MATERIAL Y MÉTODO: El áre...

We analyzed the food habits of the jaguar (Panthera onca) and puma (Puma concolor) in a protected area surrounded by a fragmented landscape in northeastern Mexico. We estimated relative biomass of each prey species consumed; by analysis of 43 and 22 scat samples of jaguar and puma collected during 2010–2012. The diet of both felids was comprised ma...

El 6 % de los humedales de todo el mundo; es decir 3 318,500 hectáreas de hu-medales, de las cuales 1 567 000 hectáreas corresponden a humedales costeros y 1 751 500 hec-táreas a humedales continentales, incluyendo algunos artificiales. Se estima que el 35 % de los humedales mexicanos ha sufrido algún deterioro, se han modificado o han desaparecido...

ABSTRACT The microorganism Mycobacterium avium subspecies paratuberculosis (Map) is the cause of severe gastroenteritis granulomatous in ruminants. It is known as Johne’s disease and is characterized by persistent diarrhea and progressive emaciation, which eventually causes death in animals, particularly young ones since they are more susceptible t...

Abstract: Forage use and availability for white tailed deer Odocoileus virginianus thomasi (Artiodactyla: Cervidae) in an experimental unit of Campeche, Mexico. In Campeche state, 122 Wildlife Conservation and Management Units have been recently conformed. In these units, eventhough the white tailed deer (Odocoileus virginianus thomasi is a game sp...

There is little information on the population status of the ocelot Leopardus pardalis in Mexico. In the Sierra Abra-Tanchipa Biosphere Reserve, in San Luis Potosí, ocelots are affected by habitat loss and fragmentation as a result of increased agricultural development. We used photographic identification in camera-trapping capture–recapture surveys...

Forage use and availability for white tailed deer Odocoileus virginianus thomasi (Artiodactyla: Cervidae) in an experimental unit of Campeche, Mexico. In Campeche state, 122 Wildlife Conservation and Management Units have been recently conformed. In these units, eventhough the white tailed deer Odocoileus virginianus thomasi is a game species, no s...

Dieta y disponibilidad de forraje del venado cola blanca Odocoileus virginianus thomasi (Artiodactyla: Cervidae) en un campo experimental de Campeche, México Abstract: Forage use and availability for white tailed deer Odocoileus virginianus thomasi (Artiodactyla: Cervidae) in an experimental unit of Campeche, Mexico. In Campeche state, 122 Wildlife...

Two techniques frequently used for monitoring pronghorn populations were compared in vegetation communities of the Chihuahuan Desert in New Mexico, USA. The evaluated techniques included the walking line transect and the driving line transect under two vegetation types and relative to season. The true population value (control) used to evaluate the...

2013. Activity patterns of jaguar, puma and their potential prey in San Luis Potosí, Mexico. Acta Zoológica Mexicana (n.s.), 29(3): 520-533. ABSTRACT. Jaguars (Panthera onca) and pumas (Puma concolor) are sympatric species in Mexico and have ecological similarities. The understanding of interespecific interactions between these species are importan...

To determine the geographic distribution of ocelot in the state of San Luis Potosí, Mexico, we obtained new records. The study was conducted from January 2007 to April 2009. We recorded 41 ocelot records by interviews and camera–trapping. Ocelots records were located in tropical deciduous forest (37%), semitropical thornscrub (22%), oak forest (15%...

Comparación de métodos basados en los requerimientos nutricionales y disponibilidad de biomasa para estimar la capacidad de carga para venado cola blanca Comparison of methods based on the nutritional requirements and availability of biomass to estimate carrying capacity for white tailed deer SUMMARY Due to the importance of the estimation of carry...

Due to the importance of the estimation of carrying capacity (K animals/ha) in white tailed deer, the objectives of this study were:1) To compare the estimation of K with five methods, three of them based on nutrient availability (dry matter (DM), digestible energy (DE) and nitrogen (N)), one based on pressure of pasture and one based on the requir...

Waterfowl, such as the Mexican duck (Anas platyrhynchos diazi), are carriers of parasites that can affect the populations of different species distributed in the Zacatecano plateau, México. The objectives of the present study were to identify the species of helminths of the Mexican duck population of the Zacatecano plateau, and to compare the compo...

Las aves acuáticas, como el pato triguero (Anas platyrhynchos diazi), son portadoras de parásitos que pueden afectar a las poblaciones de diferentes especies distribuidas en el altiplano zacatecano, México. El presente estudio tuvo como objetivos identificar las especies de helmintos de la población de pato triguero del altiplano zacatecano, y comp...

The main goal of this study was to evaluate the effect of captivity upon morphological characteristics and body growth rates of the Morelet's crocodile (Crocodylus moreletii). The studied individuals are currently reared in the Management Unit for Wildlife Conservation (Cacahuatal), located at Veracruz, Mexico. Four populations were compared: indiv...

The main goal of this study was to evaluate the effect of captivity upon morphological characteristics and body growth rates of the Morelet's crocodile (Crocodylus moreletii). The studied individuals are currently reared in the Management Unit for Wildlife Conservation (Cacahuatal), located at Veracruz, Mexico. Four populations were compared: indiv...

La distribución geográfica del jaguar (Panthera onca) en México ha disminuido debido a la cacería furtiva, la disminución de sus presas y la pérdida de hábitat. En el estado de San Luis Potosí no se han realizado muestreos recientes desde el 1953, a pesar de que existe hábitat adecuado en la sierra Madre Oriental. Durante mayo 2006-marzo 2008, real...

Se estimó la capacidad nutricional de carga para la codorniz montezuma (Cyrtonyx montezumae) en las estaciones de invierno y primavera en el municipio Aculco, estado de México. Se evaluó la disponibilidad de biomasa de bulbos de Oxalis en zonas de transición entre pastizal y bosque, determinando la cantidad de bulbos a una profundidad de 5 cm. El c...

A study was conducted to evaluate the influence of good (GC) and fair (FC) range condition classes on pronghorn and cattle diets. There was a higher preference for the GC (84%) than for the FC (16%) area (P<0.05). Pronghorn in GC consumed maximum shrubs (51.8%) followed by grasses (29.9%) and forbs (18.3%). In FC the sequence was the same but for t...

Mexico's wildlife has been impacted by human land use changes and socioeconomic and political factors since before the Spanish conquest in 1521. Presently, it has been estimated that more than 60% of the land area has been severely degraded. Mexico ranks in the top 3 countries in biodiversity, is a plant and faunal dispersal corridor, and is a cruc...

Jaramillo-Jaimes, M.T., Sifuentes-Rincón, A.M., Sánchez Torres-Esqueda, M.T., Mendoza-Martínez, G.D., Clemente-Sánchez, F., Olivera-López, J.I., Molina Hernández, M. and Martínez-Tripp, S.C. 2007. Genetic variability in six Mexican gray wolf (Canis lupus baileyi) populations determined by microsatellite markers. J. Appl. Anim. Res., 31: 131–136.A s...

The introduction of Odocoileus virginianus texanus in areas outside of its natural distribution has caused crossbreeding among subspecies that could affect native germplasm. To manage these populations correctly, genetic variability among O. v. texanus, O. v. veraecrusis, O. v. carminis and O. v. miquihuanensis was determined in northeastern México...

El presente estudio se realizó para determinar la densidad poblacional y el uso del hábitat de la codorniz Moctezuma (Cyrtonyx montezumae) en Hualtepec, Hidalgo, México, en tres tipos de vegetación: bosque, pastizal y zona de transición (ecotono). Dicho sitio se localiza en el extremo oeste de Hidalgo, con área de muestreo de 5 715 ha. Se realizó u...

La introducción de Odocoileus virginianus texanus en áreas fuera de su distribución, ha causado el entrecruzamiento de subespecies que podría afectar el germoplasma nativo. Para manejar adecuadamente estas poblaciones se determinó la variabilidad genética entre O. v. texanus, O. v. veraecrucis, O. v. carminis y O. v. miquihuanensis en el noreste me...

With the objective of contributing in the definition of the subspecies of white-tailed deer in Mexico, the morphometric variability of the subspecies distributed in the Northeast of Mexico was determined (Odocoileus virginianus carminis, O. v. miquihuanensis, O.v. texanus and O. v. veraecrucis). The records of 592 animals were analyzed (579 O. v. t...

Mexican spotted owl (Strix occidentalis lucida) is listed as a threatened species (DOF, 2002). Eighty-six owl pellets were collected at Valparaiso, Zacatecas, México from May to June 2001 and 2002, and from April to June 2003. Information on Mexican spotted owl's diet composition will provide a better understanding of its biology and will allow the...

Mexican spotted owl (Strix occidentalis lucida) is listed as a threatened species (DOF, 2002). Eighty-six owl pellets were collected at Valparaiso, Zacatecas, Mexico from May to June 2001 and 2002, and from April to June 2003. Information on Mexican spotted owl's diet composition will provide a better understanding of its biology and will allow the...

Thirty-two juveniles black iguanas (Ctenosaura pectinata) with an average initial weight of 223.3 g were used to evaluate the effect of temperature and type of diet on food intake and growth. Black iguanas were treated in a completely randomized 4 x 4 design. The iguanas were fed ad libitum with four commercial feeds: (1) broilers' feed (20% CP), (...

Clemente, F., Riquelme, E., Mendoza, G.D., Bárcena, R., González, S. and Ricalde, R. 2005. Digestibility of forage diets of white-tailed deer (Odocoileus virginanus, Hays) using different ruminal fluid inocula. J. Appl. Anim. Res., 27: 71–76.Ruminal inocula obtained from goat, cow and feral and captive deer were used to determine in vitro dry matte...

El tecolote moteado mexicano (Strix occidentalis lucida) es una subespecie amenazada (DOF, 2002). Para conocer la variación y composición de la dieta del tecolote moteado en Valparaíso, Zacatecas, México, se recolectaron de mayo a junio de 2001 y 2002, y de abril a junio de 2003, 86 egagrópilas. Conocer la composición de su dieta en esta zona ampli...

The nutritional carrying capacity for Montezuma quail (Cyrtonyx montezumae) was estimated during winter and spring. The biomass availability of bulbs of Oxalis in Aculco municipality, Mexico state was measured in transitional zones of pine forested areas and rangelands by quantification of Oxalis bulbs (5 cm). Intake was estimated using energy requ...

Se realizó un estudio para analizar la dieta invernal de la codorniz Moctezuma (Cyrtonyx montezumae) en la región noroeste del Estado de México. Se recolectaron 14 buches de codorniz durante el invierno 1999-2000. Se determinó el volumen y la materia seca (MS) de cada alimento por procedimientos convencionales. Los bulbos de Oxalis alpino constituy...

El presente estudio se realizó para determinar la densidad poblacional de la codorniz Moctezuma ( Cyrtonyx montezumae) en la región noroeste del Estado de México, México. El área de estudio correspondió a la región cinegética II del calendario cinegético 1997, con un marco de muestreo de 249 700 ha, 73% forestal y 27% pastizales, mismos que fueron...

El objetivo del presente estudio fue comparar el patrón de crecimiento de la iguana negra (Ctenosaura pectinata) en dos comunidades, criadas en condiciones de cautiverio, Montecillo, Estado de México (clima templado) y Nisanda, Oaxaca (clima tropical). Se utilizaron 260 crías recién nacidas. A las iguanas criadas en Montecillo se les ofreció alimen...

RESUMEN La Sierra Fría es la única Área Natural Protegida del estado de Aguascalientes, donde el venado (Odocoileus virginianus) es una especie cinegética importante. Se realizó este trabajo con los objetivos de evaluar la calidad del hábitat, la densidad y la estructura poblacional del venado cola blanca. Se estudiaron 5 ranchos cinegéticos locali...

This study was conducted to compare the growth patterns of black iguana (Ctenosaura pectinata) under captivity in two communities: Montecillo, State of Mexico (temperate weather) and Nisanda, Oaxaca (tropical weather). Two hundred and sixty black iguana newborns were included. In Montecillo, iguanas were fed a diet containing 16% to 22% crude prote...

Thirty-two juveniles black iguanas (Ctenosaura pectinata) with an average initial weight of 223.3 g were used to evaluate the effect of temperature and type of diet on food intake and growth. Black iguanas were treated in a completely

With the objective of contributing in the definition of the sub- species of white-tailed deer in Mexico, the morphometric vari- ability of the subspecies distributed in the Northeast of Mexico was determined (Odocoileus virginianus carminis, O. v. miqui- huanensis, O.v. texanus and O. v. veraecrucis). The records of 592 animals were analyzed (579 O...