Morphology and ultrastructure of the Dufour gland of Myzinum sp. (Tiphiidae) | Zendy

Johan Billen | Zendy; Cíntia Eleonora Lopes Justino | Zendy; Fernando Henrique Carnimeo | Zendy; Fernando Barbosa Noll | Zendy

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Morphology and ultrastructure of the Dufour gland of Myzinum sp. (Tiphiidae)

Author(s) -

Johan Billen,

Cíntia Eleonora Lopes Justino,

Fernando Henrique Carnimeo,

Fernando Barbosa Noll

Publication year - 2017

Publication title -

journal of hymenoptera research

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.563

H-Index - 20

eISSN - 1314-2607

pISSN - 1070-9428

DOI - 10.3897/jhr.55.11618

Subject(s) - ultrastructure , biology , sting , duct (anatomy) , anatomy , secretion , epithelium , exocrine gland , hymenoptera , salivary gland , electron microscope , microbiology and biotechnology , zoology , endocrinology , genetics , engineering , aerospace engineering , biochemistry , physics , optics

The Dufour gland of two Myzinum females was studied with light and electron microscopy, and is formed by a large sac lined with a monolayered secretory epithelium. The epithelium displays a crenellate appearance, which is the result of the peculiar shape of the secretory cells, that have a cupola-like central portion and a more flattened appearance in the contact region with other cells. The ultrastructural organization is indicative for the elaboration of a non-proteinaceous secretion. The gland opens ventrally to the sting base, but does not open through the sting, as does the venom gland duct. The sting itself is dorsally curved, which may be a functional adaptation to facilitate stinging large beetle larvae from above, as these are the common hosts for tiphiid wasps

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