Acta Ichthyologica et Piscatoria 30(1): 73-79, doi: 10.3750/AIP2000.30.1.06
Stomach as an additional respiratory organ, as exemplified by Ancistrus multispinnis (Couvier et Valenciennes, 1937), Siluriformes, Teleostei
expand article infoL. Satora, A. Winnicki

Corresponding author: L. Satora

© L. Satora, A. Winnicki.
This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Citation: Satora L, Winnicki A (2000) Stomach as an additional respiratory organ, as exemplified by Ancistrus multispinnis (Couvier et Valenciennes, 1937), Siluriformes, Teleostei. Acta Ichthyologica et Piscatoria 30(1): 73-79. https://doi.org/10.3750/AIP2000.30.1.06
Open Access
Abstract
The micro- and ultrastructure of intestinal wall of 29 individuals of Ancistrus multispinnis was examined under the scanning and transmission electron microscopes. The presence of cellular structures, analogous to type I pneumocytes forming the mammalian pulmonary lining, was identified in the stomach corpus. Cells of a morphology similar to that of neuroendocrine cells of the salamander lungs were found as well. The pulmonary-cerebral capillaries were identified in the stomach corpus. The observations demonstrated that the stomach of A. multispinnis was able to function as an additional respiratory organ.