Search Results - "OSORNO, José Luis"

Morphology and Ornamentation in Male Magnificent Frigatebirds: Variation with Age Class and Mating Status by Madsen, Vinni, Dabelsteen, Torben, Osorio, Daniel, Osorno, José Luis

“…Male magnificent frigatebird (Fregata magnificens) ornamentation includes bright iridescent plumage and a red inflatable gular pouch. These signals are…”
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Hormonal correlates of breeding behavior and pouch color in the Magnificent Frigatebird, Fregata magnificens by Osorno, José Luis, Núñez-de la-Mora, Alejandra, D’Alba, Liliana, Wingfield, John C

“…Abstract It is well known that testosterone (T) influences the expression of the behavior and many sexual traits during reproduction in vertebrates. However,…”
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Long-term costs of using heavy shells in terrestrial hermit crabs (Coenobita compressus) and the limits of shell preference: an experimental study by Osorno, José Luis, Contreras-Garduño, Jorge, Macías-Garcia, Constantino

“…Terrestrial hermit crabs use mollusc shells to protect their soft bodies from predation and desiccation, but their use is costly. The energetic short-term cost…”
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Offspring Desertion in the Magnificent Frigatebird: Are Males Facing a Trade-Off between Current and Future Reproduction? by Osorno, José-Luis

“…Timing of offspring desertion is expected to be the outcome of the trade-off between current and future reproductive benefits for deserters. I investigated…”
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Are hermit crabs looking for light and large shells?: evidence from natural and field induced shell exchanges by Osorno, José-Luis, Fernández-Casillas, Lourdes, Rodrı́guez-Juárez, Cristina

“…Terrestrial hermit crabs ( Coenobita compressus (H. Milne Edwards)) on Isabel island, México, prefer Nerita (Ritena) scabricosta (Lanark 1822) over other…”
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THE DIET OF THE MAGNIFICENT FRIGATEBIRD DURING CHICK REARING by Calixto-Albarrán, Itzia, Osorno, José-Luis

“…We describe the diet of the Magnificent Frigatebird Fregata magnificens at Isla Isabel off the Pacific coast of Mexico based on 158 regurgitates (555 prey…”
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Should young ever be better off with one parent than with two? by McNamara, John M., Houston, Alasdair I., Barta, Zoltán, Osorno, José-Luis

“…We analyze models of parental care, providing the first systematic comparison of the care given to young by one parent versus by two parents. In the…”
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Testosterone levels and gular pouch coloration in courting magnificent frigatebird ( Fregata magnificens): Variation with age-class, visited status and blood parasite infection by Madsen, Vinni, Valkiūnas, Gediminas, Iezhova, Tatjana A., Mercade, Clara, Sanchez, Marco, Osorno, José Luis

“…Male magnificent frigatebirds ( Fregata magnificens) possess a seasonally expressed skin ornament, namely the red and inflatable gular pouch, and are,…”
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Corticosterone metabolites in blue tit and pied flycatcher droppings: Effects of brood size, ectoparasites and temperature by Lobato, Elisa, Merino, Santiago, Moreno, Juan, Morales, Judith, Tomás, Gustavo, Martínez- de la Puente, Josué, Osorno, José Luis, Kuchar, Alexandra, Möstl, Erich

“…The hypothalamic-pituitary-adrenal (HPA) axis of birds induces the secretion of corticosterone (CORT) as a response to different ecological variables. In this…”
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Avian egg colour and sexual selection: does eggshell pigmentation reflect female condition and genetic quality? by Moreno, Juan, Osorno, José Luis

“…Avian egg colour has been explained as mainly serving crypsis or mimetism, although the function of certain colours (e.g. blue and green) has not yet been…”
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Sexual conflict and parental care in magnificent frigatebirds: full compensation by deserted females by Osorno, José Luis, Székely, Tamás

“…Parental care is a cooperative venture between a male and a female in many socially monogamous birds. Care is costly, and thus, sexual conflict arises between…”
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Arrival date and territorial behavior are associated with corticosterone metabolite levels in a migratory bird by Lobato, Elisa, Moreno, Juan, Merino, Santiago, Morales, Judith, Tomás, Gustavo, Martínez, Javier, Vásquez, Rodrigo A., Kuchar, Alexandra, Möstl, Erich, Osorno, José Luis

“…Glucocorticoids promote the mobilization of energy stores and they may facilitate the expression of energetically expensive functions. Early arrival on the…”
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Effects of Parental Effort on Blood Stress Protein HSP60 and Immunoglobulins in Female Blue Tits: A Brood Size Manipulation Experiment by Merino, Santiago, Moreno, Juan, Tomás, Gustavo, Martínez, Javier, Morales, Judith, la Puente, Josué Martínez-de, Osorno, José Luis

“…1. Physiological stress in animals may impose a limit for investment in current reproduction in the wild. A brood manipulation experiment was conducted in a…”
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CHICK GROWTH VARIABILITY AND PARENTAL PROVISIONING IN THE MAGNIFICENT FRIGATEBIRD by Tobón, Emilio, Osorno, José Luis

“…In two contrasting breeding seasons, we investigated the effects of provisioning on chick growth and survival of the Magnificent Frigatebird (Fregata…”
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Weight difference threshold during shell selection relates to growth rate in the semi-terrestrial hermit crab Coenobita compressus by Contreras-Garduño, Jorge, Osorno, José Luis, Macías-Garcia, Constantino

“…To minimize the energetic expenditure imposed by carrying a protective gastropod shell, terrestrial hermit crabs should discriminate the weight difference…”
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Chick Growth Variability and Parental Provisioning in the Magnificent Frigatebird by Tobón, Emilio, Osorno, José Luis

“…Abstract In two contrasting breeding seasons, we investigated the effects of provisioning on chick growth and survival of the Magnificent Frigatebird (Fregata…”
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Chick Growth Variability and Parental Provisioning in the Magnificent Frigatebird / Variabilidad en el Crecimiento de la Cría y Aprovisionamiento Paterno en Fregata magnificens by Emilio Tobón, Osorno, José Luis

“…In two contrasting breeding seasons, we investigated the effects of provisioning on chick growth and survival of the Magnificent Frigatebird (Fregata…”
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MALE-MALE COMPETITION AND FEMALE BEHAVIOR AS DETERMINANTS OF MALE MATING SUCCESS IN THE SEMI-TERRESTRIAL HERMIT CRAB COENOBITA COMPRESSUS (H. MILNE EDWARDS) by Contreras-Garduño, Jorge, Osorno, José Luis, Córdoba-Aguilar, Alex

“…The sexual behavior of the hermit crab Coenobita compressus was studied. The size, gastropod shell species, and sexual behavior of males measured in terms of…”
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Morphology and Ornamentation in Male Magnificent Frigatebirds: Variation with Age Class and Mating Status by Madsen, Vinni, Dabelsteen, Torben, Osorio, Daniel, Osorno, José Luis

“…Male magnificent frigatebird (Fregata inagnificens) ornamentation includes bright iridescent plumage and a red inflatable gular pouch. These signals are…”
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Morphology and ornamentation in male magnificent frigatebirds : Variation with age class and mating status: Avian coloration and color vision by MADSEN, Vinni, DABELSTEEN, Torben, OSORIO, Daniel, OSORNO, José Luis

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