Esophagogastric region and liver tissue in dog-faced water snake Cerberus rynchops: Histology and histochemistry

Authors

  • Piyakorn Boonyoung Department of Anatomy, Faculty of Science, Prince of Songkla University, Songkhla, 90110, Thailand
  • Sinlapachai Senarat Department of Marine Science, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand
  • Jes Kettratad Department of Marine Science, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand
  • Wannee Jiraungkoorskul Department of Pathobiology, Faculty of Science, Mahidol University, Bangkok, 10400, Thailand
  • Pisit Poolprasert Program of Biology, Faculty of Science and Technology, Pibulsongkram Rajabhat University, Phitsanulok, 65000, Thailand
  • Sansareeya Wangkulangkul Department of Biology, Faculty of Science, Prince of Songkla University, Songkhla, 90110, Thailand
  • Theerakamol Pengsakul Faculty of Medical Technology, Prince of Songkla University, Songkhla, 90110, Thailand
  • Watiporn Yenchum Bio-Analysis Laboratory, Department of Chemical Metrology and Biometry, National Institute of Metrology (Thailand), Pathum Thani, 10120, Thailand
  • Yassir Sulieman Department of Zoology, Faculty of Science and Technology, University of Shendi, Sudan

Keywords:

Dog-faced water snake, Digestive region, Gulf of Thailand, Histology

Abstract

Observation of the esophagogastric region and liver tissue of the dog-facedwater snake, Cerberus rynchops, living in Thailand was evaluated using standard histological techniques. The results revealed that the digestive tract of this snake consists of three parts: the oesophagus, stomach and intestine, respectively. From the histological analysis, the longitudinal folds of the oesophagus were lined by pseudostratified columnar epithelia with goblet cells. The goblet cells stained positively with periodic acid-Schiff (PAS) and alcian blue (AB) methods. In the stomach, gastric glands extended into the lamina propria. Each gastric gland had a greater cell size than other regions and also a branched tubular gland was visible in the
histological images. The mucous neck cellwas positive to PAS and AB reactions, whereas, the oxynticopeptic cells slightly reacted to both PAS and AB staining and were preferentially located in this gland. The liver parenchyma of C. rynchops was composed of hepatic sinusoids and hepatocytes. In conclusion, this was the first study on digestive tract and liver tissue in C. rynchops from the Paknam Pranburi Estuary, Thailand.

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Published

2017-12-31

Issue

Section

Research Article