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Zhukova K, Stroganov AN. Anatomy of the digestive system of lumpfish (Cyclopterus lumpus) as an adaptation to puffing behavior. Anat Rec (Hoboken). 2021;doi: 10.1002/ar.24799.
Zhukova, K., & Stroganov, A. N. (2021). Anatomy of the digestive system of lumpfish (Cyclopterus lumpus) as an adaptation to puffing behavior. Anatomical record (Hoboken, N.J. : 2007), . https://doi.org/10.1002/ar.24799
Zhukova, Kristina, and Stroganov, Andrey Nikolaevich. "Anatomy of the digestive system of lumpfish (Cyclopterus lumpus) as an adaptation to puffing behavior." Anatomical record (Hoboken, N.J. : 2007) vol. (2021). doi: https://doi.org/10.1002/ar.24799
Zhukova K, Stroganov AN. Anatomy of the digestive system of lumpfish (Cyclopterus lumpus) as an adaptation to puffing behavior. Anat Rec (Hoboken). 2021 Oct 10; doi: 10.1002/ar.24799. Epub 2021 Oct 10. PMID: 34632730.
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Anat Rec (Hoboken). 2021 Oct 10; doi: 10.1002/ar.24799. Epub 2021 Oct 10.

Anatomy of the digestive system of lumpfish (Cyclopterus lumpus) as an adaptation to puffing behavior.

Anatomical record (Hoboken, N.J. : 2007)

Kristina Zhukova, Andrey Nikolaevich Stroganov

Affiliations

  1. Faculty of Biology, Shenzhen MSU-BIT University, Shenzhen, China.
  2. Faculty of Biology, Department of Ichthyology, Lomonosov Moscow State University, Moscow, Russia.

PMID: 34632730 DOI: 10.1002/ar.24799

Abstract

The first description of the histology of the digestive tract of the lumpfish Cyclopterus lumpus showed an adaptation for collecting and storing water. The morphology of this species' tract is mostly typical of carnivorous fishes, having a sac-like stomach for storage and a relatively short intestine of approximately 1.2× the standard body length. The esophagus is relatively short (0.13× standard body length) and thick-walled; it has a thick muscular coat, and its thickness changes from 0.4 to 1 mm during contraction. The stomach has well-developed gastric glands and is divided into the histologically distinguishable cardiac, fundus, and pyloric parts. The intestine has the same structure throughout its entire length. The water-holding ability of lumpfish is provided by well-developed muscles in the esophagus and stomach distensibility, which differs morphologically from the method used by Tetradontidae and Diodontidae species, who store water in the caudal part of the esophagus. The morphology of the digestive tract proved that this species is an intermediate between Tetradontidae and Diodontidae, which could inflate their bodies by swallowing certain amounts of water, and other fishes which are not able to do so. Results of the work extend current knowledge on the morphological capability of the digestive system of teleost fish, providing water-blowing behavior.

© 2021 American Association for Anatomy.

Keywords: Cyclopteridae; histology; morphology; the White Sea; water blowing

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