Mouthparts, gut contents, and retreat-construction by the wood-dwelling larvae of Lype phaeopa (Trichoptera: Psychomyiidae)
The larvae of Lype phaeopa (Stephens, 1836) are found on dead wood substrates in streams and lakes. Gut content analyses, scanning electron microscopy of larval mouthparts, and gallery structure revealed characteristics of this habitat preference. The guts of the larvae contained mainly wood fragmen...
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| Format: | Article |
| Language: | English |
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Institute of Entomology, Biology Centre, Czech Academy of Science
2003-11-01
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| Series: | European Journal of Entomology |
| Subjects: | |
| Online Access: | https://www.eje.cz/artkey/eje-200304-0017_Mouthparts_gut_contents_and_retreat-construction_by_the_wood-dwelling_larvae_of_Lype_phaeopa_Trichoptera_Ps.php |
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| author | Bernd SPÄNHOFF Ulf SCHULTE Christian ALECKE Norbert KASCHEK Elisabeth Irmgard MEYER |
| author_facet | Bernd SPÄNHOFF Ulf SCHULTE Christian ALECKE Norbert KASCHEK Elisabeth Irmgard MEYER |
| author_sort | Bernd SPÄNHOFF |
| collection | DOAJ |
| description | The larvae of Lype phaeopa (Stephens, 1836) are found on dead wood substrates in streams and lakes. Gut content analyses, scanning electron microscopy of larval mouthparts, and gallery structure revealed characteristics of this habitat preference. The guts of the larvae contained mainly wood fragments whereas other food items (detritus, algae, fungi, inorganic particles) were much rarer. The suitability of the mouthparts to scrape wood surfaces, and the adaptative elongation of the silk-secreting spinneret, which facilitates the construction of retreats consisting of a tunnel-like silken net incorporating mainly wood fragments, are discussed. Retreat-construction under laboratory conditions indicated that larvae exploit new feeding areas by steadily extending their galleries. Tips of the maxillary palps bear five sensilla styloconica and five sensilla basiconica, almost all bearing an apical pore. Three sensilla styloconica, two with an apical peg, and two small inconspicious sensilla basiconica are located on the galea. Possible function of these sensilla is discussed on the basis of studies on the closely related sister-group of Lepidoptera. |
| first_indexed | 2024-12-24T11:18:34Z |
| format | Article |
| id | doaj.art-34b5075349ef46cbbcf0007bab53e1d9 |
| institution | Directory Open Access Journal |
| issn | 1210-5759 1802-8829 |
| language | English |
| last_indexed | 2024-12-24T11:18:34Z |
| publishDate | 2003-11-01 |
| publisher | Institute of Entomology, Biology Centre, Czech Academy of Science |
| record_format | Article |
| series | European Journal of Entomology |
| spelling | doaj.art-34b5075349ef46cbbcf0007bab53e1d92022-12-21T16:58:18ZengInstitute of Entomology, Biology Centre, Czech Academy of ScienceEuropean Journal of Entomology1210-57591802-88292003-11-01100456357010.14411/eje.2003.085eje-200304-0017Mouthparts, gut contents, and retreat-construction by the wood-dwelling larvae of Lype phaeopa (Trichoptera: Psychomyiidae)Bernd SPÄNHOFF0Ulf SCHULTE1Christian ALECKE2Norbert KASCHEK3Elisabeth Irmgard MEYER4Institute for Animal Evolution and Ecology, Department of Limnology, University of Muenster, 48149 Muenster, Germany; e-mail: spanhof@uni-muenster.deInstitute for Animal Evolution and Ecology, Department of Limnology, University of Muenster, 48149 Muenster, Germany; e-mail: spanhof@uni-muenster.deMax Delbrueck Center for Molecular Medicine, 13125 Berlin, GermanyInstitute for Animal Evolution and Ecology, Department of Limnology, University of Muenster, 48149 Muenster, Germany; e-mail: spanhof@uni-muenster.deInstitute for Animal Evolution and Ecology, Department of Limnology, University of Muenster, 48149 Muenster, Germany; e-mail: spanhof@uni-muenster.deThe larvae of Lype phaeopa (Stephens, 1836) are found on dead wood substrates in streams and lakes. Gut content analyses, scanning electron microscopy of larval mouthparts, and gallery structure revealed characteristics of this habitat preference. The guts of the larvae contained mainly wood fragments whereas other food items (detritus, algae, fungi, inorganic particles) were much rarer. The suitability of the mouthparts to scrape wood surfaces, and the adaptative elongation of the silk-secreting spinneret, which facilitates the construction of retreats consisting of a tunnel-like silken net incorporating mainly wood fragments, are discussed. Retreat-construction under laboratory conditions indicated that larvae exploit new feeding areas by steadily extending their galleries. Tips of the maxillary palps bear five sensilla styloconica and five sensilla basiconica, almost all bearing an apical pore. Three sensilla styloconica, two with an apical peg, and two small inconspicious sensilla basiconica are located on the galea. Possible function of these sensilla is discussed on the basis of studies on the closely related sister-group of Lepidoptera.https://www.eje.cz/artkey/eje-200304-0017_Mouthparts_gut_contents_and_retreat-construction_by_the_wood-dwelling_larvae_of_Lype_phaeopa_Trichoptera_Ps.phpretreat-constructionhabitat specializationwoody debrissensillamouthpartsgut contents |
| spellingShingle | Bernd SPÄNHOFF Ulf SCHULTE Christian ALECKE Norbert KASCHEK Elisabeth Irmgard MEYER Mouthparts, gut contents, and retreat-construction by the wood-dwelling larvae of Lype phaeopa (Trichoptera: Psychomyiidae) European Journal of Entomology retreat-construction habitat specialization woody debris sensilla mouthparts gut contents |
| title | Mouthparts, gut contents, and retreat-construction by the wood-dwelling larvae of Lype phaeopa (Trichoptera: Psychomyiidae) |
| title_full | Mouthparts, gut contents, and retreat-construction by the wood-dwelling larvae of Lype phaeopa (Trichoptera: Psychomyiidae) |
| title_fullStr | Mouthparts, gut contents, and retreat-construction by the wood-dwelling larvae of Lype phaeopa (Trichoptera: Psychomyiidae) |
| title_full_unstemmed | Mouthparts, gut contents, and retreat-construction by the wood-dwelling larvae of Lype phaeopa (Trichoptera: Psychomyiidae) |
| title_short | Mouthparts, gut contents, and retreat-construction by the wood-dwelling larvae of Lype phaeopa (Trichoptera: Psychomyiidae) |
| title_sort | mouthparts gut contents and retreat construction by the wood dwelling larvae of lype phaeopa trichoptera psychomyiidae |
| topic | retreat-construction habitat specialization woody debris sensilla mouthparts gut contents |
| url | https://www.eje.cz/artkey/eje-200304-0017_Mouthparts_gut_contents_and_retreat-construction_by_the_wood-dwelling_larvae_of_Lype_phaeopa_Trichoptera_Ps.php |
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