Presencia de doble estro anual en una hembra de lobo mexicano (Canis lupus baileyi) en cautiverio

Soto, Ma. de la Asunción; Vázquez, Carmen González; Ramos, X.; L., Ma. de Lourdes Yáñez; Armella, Miguel A.

doi:10.12933/therya-13-148

Cited by 6 publications

(13 citation statements)

References 5 publications

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“…The differences between both groups for T+P+E and T/P were significant (T+P+E: ANOVA, F 1, 145 = 580.23, P<0.001; T/P: ANOVA, F 1, 145 =29.12, P<0.001). Therefore, the fecal samples of group 1 belonged to females and those of group 2 to males (Velloso et al, 1998;Soto et al, 2004).…”

Section: Resultsmentioning

confidence: 99%

“…Origin of the Fecal Samples Previous studies on carnivores showed that the concentration of T+P+E and the relation of T/P were higher in males than in females (Velloso et al, 1998;Soto et al, 2004). Therefore, to assign sex to the depositors of particular fecal samples, we carried out a k-means conglomerate analysis, using the concentrations of T+P+E and the T/P ratio of each sample (Barja et al, 2008b).…”

Section: Methodsmentioning

confidence: 99%

“…Sex steroid hormones (SSH) act on sexual organs, thus contributing to the development of reproductive processes, and are crucial in regulating patterns of reproductive behavior (Nelson, 2005). Studies on different carnivores indicate that concentrations of these hormones increase during the reproductive season (Velloso et al, 1998;Soto et al, 2004;Barja et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

“…Quantification of these hormones in feces is a noninvasive method that is increasingly used in carnivore studies (e.g., Goymann et al, 2001;Soto et al, 2004;Creel, 2005;Barja et al, 2008a, b).…”

Section: Introductionmentioning

confidence: 99%

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Physiological Stress Responses, Fecal Marking Behavior, and Reproduction in Wild European Pine Martens (Martes martes)

et al. 2011

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The relationship among physiological stress responses, fecal marking behavior, and reproduction in male and female European pine martens was investigated. Between July 2004 and June 2007, 145 fresh fecal samples were collected in a protected area of northwest Spain. Fecal DNA was used for specific identification by using the polymerase chain reaction-restriction fragment length polymorphism technique. Glucocorticoids (cortisol) and sex steroid hormones (P, progesterone; E, estradiol; T, testosterone) were quantified by enzyme immunoassays. Sex was assigned according to concentrations of T+P+E and the T/P ratio. Fecal cortisol concentrations were higher in males than in females. Feces with a presumptive marking function (on conspicuous substrates, above ground level, and/or in latrines) had higher mean levels of cortisol than those that were on inconspicuous substrates and/or at ground level, for both males and females. Fecal mark density was highest in spring, when mean levels of fecal cortisol were more elevated. Therefore, the higher physiological stress levels in females could be due to female physiological state (late-term pregnancy and lactation), competition for resources connected to birth, or food resources for offspring rearing. In males, the increase could be due to higher male competition for access to females during pro-estrus and estrus. Our results suggest that scent marking in European pine martens is related to reproduction and is involved in intersexual and intrasexual communication.

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Physiological Stress Responses, Fecal Marking Behavior, and Reproduction in Wild European Pine Martens (Martes martes)

et al. 2011

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“…Algunas investigaciones sobre la determinación de sexo mediante esteroides fecales, se han realizado en especies como lobo mexicano (Soto et al 2009) y en distintas aves (Valdespino et al, 2007); donde han utilizado la relación de Testosterona (T), Estradiol (E2) y Progesterona (P4) (T/E2 y T/P4); para realizar el sexado, encontrando que la relación T/E2 es una relación viable para realizar la asignación del sexo.…”

Section: Resultados Y Discusiónunclassified

Asignación del sexo en Odocoileus virginianus por análisis de excretas sometidas a intemperie

et al. 2016

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Valoración de metabolitos de testosterona, progesterona y estrógeno en excretas de venado cola blanca (Odocoileus virginianus) como método para determinar el sexo

López-Cobá¹,

Montes-Pérez

2016

Revista Mexicana de Biodiversidad

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Presencia de doble estro anual en una hembra de lobo mexicano (Canis lupus baileyi) en cautiverio

Cited by 6 publications

References 5 publications

Physiological Stress Responses, Fecal Marking Behavior, and Reproduction in Wild European Pine Martens (Martes martes)

Physiological Stress Responses, Fecal Marking Behavior, and Reproduction in Wild European Pine Martens (Martes martes)

Asignación del sexo en Odocoileus virginianus por análisis de excretas sometidas a intemperie

Valoración de metabolitos de testosterona, progesterona y estrógeno en excretas de venado cola blanca (Odocoileus virginianus) como método para determinar el sexo

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