Comparison of selected parts of larval morphology in some species of the genus Chironomus (Diptera: Chironomidae) using Scanning Electron Microscope

Morphology of Chironomus larvae using SEM

  • Andrzej Kownacki | kownacki@iop.krakow.pl Polish Academy of Sciences, Institute of Nature Conservation, Poland.
  • Ewa Szarek-Gwiazda Polish Academy of Sciences, Institute of Nature Conservation, Poland.
  • Michał Dykas Jagiellonian University, Institute of Zoology and Biomedical Research, Poland.
  • Izabela Jabłońska-Barna University of Warmia and Mazury, Department of Tourism, Recreation and Ecology, Poland.
  • Paraskeva Michailova Bulgarian Academy of Science, Institute of Biodiversity and Ecosystem Research, Bulgaria.

Abstract

Comparison of small sized and weakly chitinized structures such as the labrum (labral setae SI-SIII, labral lamella, tormal bar, pecten epipharings) and the maxilla (maxillary palp, lacinial chaeta) is provided in larvae of Chironomus plumosus, C. balatonicus, C. usenicus C. melanotus, C. acerbiphilus, and C. riparius using Scanning Electron Microscope (SEM). The general morphological structures of the labrum and the maxilla were similar in all of the Chironomus larvae. They differed only in fine details such as labral seta, mainly S I. Seta S I is always plumose on each side and differently figured: elongated in C. balatonicus, C. plumosus, C. melanotus and C. usenicus; rounded in C. acerbiphilus and C. riparius. Some differences were also observed in the shape, length or ratio of lacinial chaetae (LCh I, LCh II). Based on morphological variation in the larvae of some Chironomus species, results indicated that the SEM method is apparently beneficial and useful in the analysis of smaller and weakly chitinized morphological structures such as the labrum and the maxilla.

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Published
2018-05-31
Supporting Agencies
Partly supported by the Institute of Nature Conservation, Polish Academy of Sciences in Kraków, Poland as a statutory activity
Keywords:
Chironomus, larvae, morphology, labrum, maxilla, SEM.
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How to Cite
1.
Kownacki A, Szarek-Gwiazda E, Dykas M, Jabłońska-Barna I, Michailova P. Comparison of selected parts of larval morphology in some species of the genus Chironomus (Diptera: Chironomidae) using Scanning Electron Microscope. jlimnol [Internet]. 31May2018 [cited 13Dec.2019];77(1s). Available from: https://jlimnol.it/index.php/jlimnol/article/view/jlimnol.2018.1739