Descriptive histology of the alimentary canal of Goodea atripinnis (Pisces: Goodeidae) / Histología descriptiva del tubo digestivo de Goodea atripinnis (Pisces: Goodeidae)

KEYWORDS: histology; alimentary canal; metabolic activity

ABSTRACT

The objective of this study is the histological description of the alimentary tract of G. atripinnis and its relationship to food habits. The digestive tract is macroscopically described and common histological techniques applied on sections of seven and the H- E technique applied. The histological structural plan of the alimentary canal is that common to all vertebrate groups. Analyses of the liver and pancreas reveal that this organism has a high metabolic activity canalized to obtain nutrients. Experimental observations support these conclusions.

RESUMEN

El objetivo es describir histológicamente el tubo digestivo de G. atripinnis y relacionarlo con sus hábitos alimentarios. Se describe macroscopicamente el tubo digestivo; se aplicó una tecnica histológica habitual, se revisaron cortes de siete y su posterior tinsión con la técnica H.E. Histológicamente el plan estructural del tubo digestivo es semejante a otros grupos de vertebrados; respecto al higado y pancreas su análisis revela que éste organismo tiene una actividad metabolica elevada canalizada para la obtención de alimento. Observaciones experimentada apoyan lo anterior.

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(Dean Hendrickson)				General information:   (E. Phil Pister)