Costa-Leonardo Ana Maria, Soares Helena Xavier, Haifig Ives, Laranjo Lara Teixeira
Laboratório de Cupins, Departamento de Biologia, Instituto de Biociências, UNESP - Univ Estadual Paulista, Av. 24A, No. 1515, 13506-900, Rio Claro, SP, Brazil.
Laboratório de Cupins, Departamento de Biologia, Instituto de Biociências, UNESP - Univ Estadual Paulista, Av. 24A, No. 1515, 13506-900, Rio Claro, SP, Brazil.
Arthropod Struct Dev. 2015 Sep;44(5):426-32. doi: 10.1016/j.asd.2015.08.012. Epub 2015 Sep 8.
Social insects have numerous exocrine glands, but these organs are understudied in termites compared to hymenopterans. The tarsomere and distal tibial glands of the termites Heterotermes tenuis, Coptotermes gestroi and Silvestritermes euamignathus were investigated by scanning and transmission electron microscopy. Pore plates are visible in scanning micrographs on the distal tibial surfaces and on the ventral surface of the first and second tarsomeres of workers of H. tenuis and C. gestroi. In contrast, workers of S. euamignathus have isolated pores spread throughout the ventral surfaces of the first, second, and third tarsomeres and the distal tibia. In all three species each pore corresponds to the opening of a class-3 secretory unit, composed of one secretory and one canal cell. Clusters of class-3 glandular cells are arranged side by side underneath the cuticle. The main characteristics of these exocrine glands include their presence on all the legs and the electron-lucent secretion in the secretory cells. Possible functions of these glands are discussed.
社会性昆虫有众多外分泌腺，但与膜翅目昆虫相比，白蚁的这些器官研究较少。通过扫描电子显微镜和透射电子显微镜对白蚁细胸散白蚁、黑胸散白蚁和南美散白蚁的跗节和胫节远端腺体进行了研究。在细胸散白蚁和黑胸散白蚁工蚁的胫节远端表面以及第一和第二跗节的腹面扫描显微照片中可见孔板。相比之下，南美散白蚁工蚁的孤立孔分布在第一、第二和第三跗节以及胫节远端的整个腹面。在所有这三个物种中，每个孔对应一个3类分泌单位的开口，该分泌单位由一个分泌细胞和一个导管细胞组成。3类腺细胞簇并排排列在角质层下方。这些外分泌腺的主要特征包括它们存在于所有腿上以及分泌细胞中的电子透明分泌物。讨论了这些腺体可能的功能。
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