Lidia Susana Araujo

Consejo Nacional de Investigaciones Científicas y Técnicas

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Trends

Author Order

Document Type

Co-Authors

Marı́a Elisa Lombardo

Hospital de Clínicas "José de San Martín"

Alcira Batlle

Consejo Nacional de Investigaciones Científicas y Técnicas

María Victoria Rossetti

University of Buenos Aires

Pablo L. Tubaro

Bernardino Rivadavia Natural Sciences Museum

Adela Ana Juknat

University of Buenos Aires

Bettina Mahler

University of Buenos Aires

Alcira Batlle

University of Buenos Aires

Adela Ana Juknat de Geralnik

Consejo Nacional de Investigaciones Científicas y Técnicas

Alcira M. Del C. Batllet

Consejo Nacional de Investigaciones Científicas y Técnicas

Alejandra Ciccarelli

University of Buenos Aires

Cooperative Institutions

Consejo Nacional de Investigaciones Científicas y Técnicas

University of Buenos Aires

Fundación Ciencias Exactas y Naturales

Hospital de Clínicas "José de San Martín"

Institute of Astronomy and Space Physics

Centro Científico Tecnológico - Tucumán

Universidad Complutense de Madrid

Martin University

Bernardino Rivadavia Natural Sciences Museum

Centro Científico Tecnológico - San Juan

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Field

Dietary and Sexual Correlates of Carotenoid Pigment Expression in Dove Plumage

Ornithological Applications (2003)

Bettina Mahler Lidia Susana Araujo Pablo L. Tubaro

Abstract Carotenoid pigmentation in birds' plumage is considered an honest indicator of phenotypic quality, and thus a target of sexual selection. But carotenoids also fulfill essential physiological functions, and therefore, carotenoids should only appear in plumage if they are in excess of those needed physiologically. We explored the presence of carotenoid-based plumage coloration in columbids and its association with diet and sexual dichromatism using a comparative analysis. We found that carotenoid plumage pigmentation appeared three times independently in doves, and that these events were always associated with frugivorous feeding habits. This suggests that expression of carotenoid-based plumage color in granivorous species may be constrained by the scarcity of carotenoids in their diet. However, more than half of the frugivorous species lack carotenoid-pigmented plumage, indicating that rich dietary sources of these compounds are a necessary but not sufficient cause for their expression in plumage. Analyzing 12 pairs of sister taxa, we found that plumage dichromatism was neither associated with the amount of carotenoid pigment present in the plumage nor with the sexual dimorphism in carotenoid-pigmented plumage. Although the presence of carotenoid-based plumage coloration has been related to sexual selection in several taxa, we failed to show such an association in columbids. Correlación de la Expresión de Pigmentos Carotenoides en el Plumaje de Palomas con la Dieta y la Selección Sexual Resumen. Los pigmentos carotenoides en el plumaje de las aves son considerados indicadores honestos de la calidad fenotípica y, por lo tanto, objetos de selección sexual. Sin embargo, los carotenoides también cumplen funciones fisiológicas esenciales, por lo cual aquellos que se expresan en el plumaje deberían estar en exceso de los utilizados a nivel fisiológico. Exploramos la presencia de carotenoides en el plumaje de las palomas y su asociación con la dieta y el dicromatismo sexual usando un análisis comparativo. Encontramos que el plumaje carotenoide apareció tres veces independientemente en palomas, y que estos eventos estaban siempre asociados a frugivoría. Esto sugiere que la expresión de carotenoides en el plumaje de especies granívoras puede estar restringida por la escasez de estos pigmentos en la dieta. Sin embargo, más de la mitad de las especies frugívoras carecen de plumaje carotenoide, indicando que alimentos ricos en este compuesto son una causa necesaria pero no suficiente para su expresión en el plumaje. Analizando 12 pares de taxa hermanos, encontramos que el dicromatismo no estaba asociado ni a la cantidad de pigmentos carotenoides presentes en el plumaje ni al dimorfismo sexual de plumaje carotenoide. Aunque la presencia de plumaje carotenoide ha sido relacionada con la selección sexual en numerosos grupos, no encontramos una asociación similar en palomas.

Plumage

10.1093/condor/105.2.258

Cite

Citations (14)

Inhibition of porphobilinogenase by porphyrins in Saccharomyces cerevisiae

International Journal of Biochemistry (1994)

Lidia Susana Araujo Marı́a Elisa Lombardo Alcira Batlle

10.1016/0020-711x(94)90180-5

Cite

Citations (5)

Saccharomyces cerevisiae porphobilinogenase: Some physical and kinetic properties

Comparative Biochemistry and Physiology Part B Comparative Biochemistry (1989)

Lidia Susana Araujo Marı́a Elisa Lombardo María Victoria Rossetti Alcira M.del C. Batlle

Strain (injury)

Wild type

10.1016/0305-0491(89)90281-2

Cite

Citations (4)

Porphyrin biosynthesis in Euglena gracilis—VI. The effect of growth conditions on porphobilinogenase activity and further properties

Comparative Biochemistry and Physiology Part B Comparative Biochemistry (1987)

María Victoria Rossetti Lidia Susana Araujo Marı́a Elisa Lombardo Susana Correa Garcı́a Alcira Batlle

Euglena gracilis

Euglena

10.1016/0305-0491(87)90057-5

Cite

Citations (3)

Effect of illumination on growth, chlorophyll content and δ-aminolevulinic acid synthesis in Euglena gracilis

Comparative Biochemistry and Physiology Part B Comparative Biochemistry (1988)

Marı́a Elisa Lombardo Lidia Susana Araujo Adela Ana Juknat Alcira M. Del C. Batllet

Euglena gracilis

Euglena

10.1016/0305-0491(88)90143-5

Cite

Citations (4)

Porphyrin biosynthesis in Euglena gracilis—V. Soluble and particulate PBG-ASE

Comparative Biochemistry and Physiology Part B Comparative Biochemistry (1986)

María Victoria Rossetti Marı́a Elisa Lombardo Adela Ana Juknat de Geralnik Lidia Susana Araujo Alcira Batlle

Euglena gracilis

Sephadex

Sepharose

Chaotropic agent

10.1016/0305-0491(86)90026-x

Cite

Citations (5)

DIETARY AND SEXUAL CORRELATES OF CAROTENOID PIGMENT EXPRESSION IN DOVE PLUMAGE

Ornithological Applications (2003)

Bettina Mahler Lidia Susana Araujo Pablo L. Tubaro

Carotenoid pigmentation in birds' plumage is considered an honest indicator of phenotypic quality, and thus a target of sexual selection. But carotenoids also fulfill essential physiological functions, and therefore, carotenoids should only appear in plumage if they are in excess of those needed physiologically. We explored the presence of carotenoid-based plumage coloration in columbids and its association with diet and sexual dichromatism using a comparative analysis. We found that carotenoid plumage pigmentation appeared three times independently in doves, and that these events were always associated with frugivorous feeding habits. This suggests that expression of carotenoid-based plumage color in granivorous species may be constrained by the scarcity of carotenoids in their diet. However, more than half of the frugivorous species lack carotenoid-pigmented plumage, indicating that rich dietary sources of these compounds are a necessary but not sufficient cause for their expression in plumage. Analyzing 12 pairs of sister taxa, we found that plumage dichromatism was neither associated with the amount of carotenoid pigment present in the plumage nor with the sexual dimorphism in carotenoid-pigmented plumage. Although the presence of carotenoid-based plumage coloration has been related to sexual selection in several taxa, we failed to show such an association in columbids. Correlación de la Expresión de Pigmentos Carotenoides en el Plumaje de Palomas con la Dieta y la Selección Sexual Resumen. Los pigmentos carotenoides en el plumaje de las aves son considerados indicadores honestos de la calidad fenotípica y, por lo tanto, objetos de selección sexual. Sin embargo, los carotenoides también cumplen funciones fisiológicas esenciales, por lo cual aquellos que se expresan en el plumaje deberían estar en exceso de los utilizados a nivel fisiológico. Exploramos la presencia de carotenoides en el plumaje de las palomas y su asociación con la dieta y el dicromatismo sexual usando un análisis comparativo. Encontramos que el plumaje carotenoide apareció tres veces independientemente en palomas, y que estos eventos estaban siempre asociados a frugivoría. Esto sugiere que la expresión de carotenoides en el plumaje de especies granívoras puede estar restringida por la escasez de estos pigmentos en la dieta. Sin embargo, más de la mitad de las especies frugívoras carecen de plumaje carotenoide, indicando que alimentos ricos en este compuesto son una causa necesaria pero no suficiente para su expresión en el plumaje. Analizando 12 pares de taxa hermanos, encontramos que el dicromatismo no estaba asociado ni a la cantidad de pigmentos carotenoides presentes en el plumaje ni al dimorfismo sexual de plumaje carotenoide. Aunque la presencia de plumaje carotenoide ha sido relacionada con la selección sexual en numerosos grupos, no encontramos una asociación similar en palomas.

Plumage

10.1650/0010-5422(2003)105[0258:dascoc]2.0.co;2

Cite

Citations (23)

A Method for Estimating Glycine in the Presence of Excess Glutamate with o-Phthaldialdehyde

Zeitschrift für Naturforschung C (1990)

Marı́a Elisa Lombardo Lidia Susana Araujo A. Branca Alcira Batlle

Abstract We present a method to determine concentrations of glycine between 1 and 3 mM in the simultaneous presence of 25-100 mM glutamate, which is a modification of the procedure originally described by Klein and Linscr. Z. Physiol. Chem. 205,251 (1932). Glycine and glutamate react with 150 mM w-phthaldialdehyde, glycine is quantitatively con- verted into a colored o-phthaldialdehyde-glycine-glutamate complex. By recording the ab- sorbance of the complex at its maximum peak (around 540 nm). at 600 nm and 480 nm and applying a correction formula is possible to obtain a very good linear correlation when plot- ting the values of corrected absorbance versus the concentration of glycine. From these plots an extinction coefficient of 7.0 x 10 2 cm -1 m -1 was calculated for the complex. The method is highly reproducible and sensitive and solved the problem of glutamate interference when esti- mating low concentrations of glycine in mixture containing 10 to 50 times concentrations of the former aminoacid.

Absorbance

10.1515/znc-1990-7-825

Cite

Citations (3)

5-Aminolevulinic acid synthesis in epimastigotes of Trypanosoma cruzi

The International Journal of Biochemistry & Cell Biology (2003)

Marı́a Elisa Lombardo Lidia Susana Araujo Alcira Batlle

Porphobilinogen synthase

Porphobilinogen

Porphobilinogen deaminase

10.1016/s1357-2725(03)00033-5

Cite