de Sousa Diego Ferreira, Bezerra Andrea, Branco Erika, Giese Elane Guerreiro, de Lima Ana Rita
Programa de Pós-Graduação em Saúde e Produção Animal na Amazônia (PPGSPAA), Universidade Federal Rural da Amazônia (UFRA), PA, Brazil.
Instituto de Saúde e Produção Animal na Amazônia (ISPA), Universidade Federal Rural da Amazônia (UFRA), PA, Brazil.
Anat Histol Embryol. 2025 Jul;54(4):e70043. doi: 10.1111/ahe.70043.
Kinosternon scorpioides scorpioides is an omnivorous chelonian with a wide geographical distribution, occurring from Mexico to South America, especially in Brazil. While morphological observations of the species have described its oesophagus, little is known about the other organs constituting the tubular digestive tract. Therefore, the objective of this study was to describe the morphological aspects of the tubular portion of the digestive tract of this species. Ten adult specimens were analysed. After fixation in 10% formalin, organ fragments were embedded in paraffin using the routine histological technique. Sections of 5 μm thick were stained with haematoxylin-eosin (HE), Gomori trichrome (GT) and Alcian blue (AB) pH 0.4 and 2.5. The tubular portion of the digestive tract of K. s. scorpioides consisted of the oesophagus, stomach, small intestine (duodenum, jejunum and ileum), large intestine (caecum and colon) and cloaca. The wall of the tubular portion of the digestive tract of K. s. scorpioides was made up of four concentric layers: Mucosa, submucosa, muscularis externa and adventitia or serosa. The morphology of the tubular digestive tract of adult K. s. scorpioides described in this study shows structural patterns appropriate to their omnivorous feeding habits, such as a simple glandular stomach, long intestines, a well-developed caecum and the production of mucosecretions throughout the digestive tract. This study provides insights into the digestive physiology of the species and provides data for comparative analyses.
蝎泽动胸龟（Kinosternon scorpioides scorpioides）是一种杂食性龟类，地理分布广泛，从墨西哥到南美洲均有出现，尤其在巴西。虽然对该物种的形态学观察已经描述了其食道，但对于构成管状消化道的其他器官却知之甚少。因此，本研究的目的是描述该物种消化道管状部分的形态学特征。分析了10个成年标本。在10%福尔马林中固定后，使用常规组织学技术将器官碎片包埋在石蜡中。制作5μm厚的切片，并用苏木精-伊红（HE）、Gomori三色染色法（GT）和pH值为0.4及2.5的阿尔辛蓝（AB）进行染色。蝎泽动胸龟消化道的管状部分由食道、胃、小肠（十二指肠、空肠和回肠）、大肠（盲肠和结肠）和泄殖腔组成。蝎泽动胸龟消化道管状部分的壁由四层同心层组成：黏膜层、黏膜下层、肌层和外膜或浆膜。本研究中描述的成年蝎泽动胸龟管状消化道的形态显示出与其杂食性饮食习惯相适应的结构模式，如简单的腺胃、长肠道、发达的盲肠以及整个消化道产生黏液分泌物。本研究为该物种的消化生理学提供了见解，并为比较分析提供了数据。
