Major differences in the larval anatomy of the digestive and excretory systems of three Oestridae species revealed by micro-CT
| Autor: | Daniel Martín-Vega, L. M. Ferrer, Martin J. R. Hall, R. Cepeda-Palacios, Brett Clark, Rosario Panadero, D. D. Colwell, S. López-Tamayo |
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| Rok vydání: | 2020 |
| Předmět: |
0301 basic medicine
Malpighian tubule system animal structures 030231 tropical medicine Biology Malpighian Tubules Oestrus ovis 03 medical and health sciences 0302 clinical medicine Species Specificity Animals Ovis Ecology Evolution Behavior and Systematics Larva General Veterinary Diptera fungi Foregut Midgut Anatomy X-Ray Microtomography 030108 mycology & parasitology biology.organism_classification Excretory system Insect Science Instar Parasitology Digestive System |
| Zdroj: | Medical and veterinary entomologyReferences. 35(1) |
| ISSN: | 1365-2915 |
| Popis: | Oestrid flies (Diptera: Oestridae) do not feed during the adult stage, so they depend on an efficient assimilation and storage of nutrients during their parasitic larval stage. We describe the general morphology and provide volumetric data for the digestive and excretory organs of the three larval instars of the nasal bot fly Oestrus ovis L., using micro-computed tomography. The size of the digestive and excretory organs greatly increased across larval instars. In all instars, the two salivary glands were remarkably large and formed a ‘glandular band’ by coming together, but without lumina uniting, at their posterior ends. The distal region of the anterior Malpighian tubules was greatly enlarged and full of highly radio-opaque concretions. Moreover, the anatomy of O. ovis third-instar larva was compared to that of two species of, respectively, similar and different feeding habits: Cephenemyia stimulator (Clark) and Hypoderma actaeon Brauer. Whereas the general morphology and arrangement of the digestive and excretory systems of C. stimulator was similar to that of O. ovis, some differences were observed in H. actaeon: a swollen anterior region of the midgut, salivary glands shorter and not forming a ‘band’ and anterior Malpighian tubules narrowly uniform throughout their entire length. |
| Databáze: | OpenAIRE |
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