Indice de Artículos Digitales |
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Vacunación contra el VPH y prevención del cáncer / Iris Cardona-Meaux
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Valentín Paz-Andrade, desde la memoria
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Vallejo : crítico de su tiempoUna mirada al caracter de la crítica literaria y la crítica social y política en César Vallejo. La crítica de Vallejo se fundamenta en la apreciación de que algo ha sido injusto y es la justicia un carácter que confiere unidad a su labor como crítico.
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Valores / vapores? : Schopenhauer y Wittgensteis sobre el suicidio.
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Valores y problemas en la Universidad de Puerto Rico / Jaime Benítez
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Vamos a diseñar un Vieques para los viequenses : a derrotar el plan de la Marina
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Variaciones sobre un tema de Nietzsche : la música
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Variations in Morphology and Coloration in the Black Hamlet, Hypoplectrus nigricants (Teleostei: Serranidae)Black hamlet (Hypoplectrus nigricans) was observed to vary in colortion and morphology in Puerto Rico, Mexico and Belize. H. nigricans from Puerto Rico exhibited a larger, grayish body (pectoral) fins transparent) with long and pointed pelvic fins, and lunate caudal fin, while individuals from Mexico and Belize eshibited a smaller, darder body (including pectoral fins), with shorter and no pointed pelvic fins, and a truncated caudal fin. Occurrence of colorationand morphology variations of H. nigricans had not been previously noted, and this is the first record of such in the western Atlantic. Color variants are known for at least four species of Hypoplectrus; however, these variants appear to be sympatic in the same geographic region. In contrast, H. nigricans variants were not found in Puerto Rico, while larger, grayish variants were not found in Mexico or Belize. Reasons for the occurrence of geographically segregated H. nigricans variants are not fully understood, but a hypothesis that may explain it, still needing further testing, is ongoing speciation.
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Vega Baja (reseña) : notas para su historia
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Veinticinco años del ensayo puertorriqueño
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