Abstract
Aromatic pygidial gland constituents ofAgabus bipustulatus L. andA. paludosus F. were quantitatively determined. Concentration fluctuations were found to be dependent on age and season. Both in quantity and quality of the secretion, young beetles differ from mature beetles by storing only small amounts of gland material with different portions of constituents. Seasonal variations are mainly due to the changing population structure of the species.
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References
Casper, A. 1913. Die Körperdecke und die Drüsen vonDytiscus marginalis L.Z. Wiss. Zool. 107:387–508.
Dettner, K. 1976. Populationsdynamische Untersuchungen an Wasserkäfern zweier Hochmoore des Nordschwarzwaldes.Arch. Hydrobiol. 77:375–402.
Dettner, K. 1979. Chemotaxonomy of water beetles based on their pygidial gland constituents.Biochem. Syst. Ecol. 7:129–140.
Dettner, K., andSchwinger, G. 1980. Defensive substances from pygidial glands of water beetles.Biochem. Syst. Ecol. 8:89–95.
Karlson, P., andSekeris, C.E. 1976. Control of tyrosine metabolism and cuticle sclerotization by ecdysone, pp. 145–155,in H.R. Hepburn (ed.). The Insect Integument. Elsevier, Amsterdam.
Maschwitz, U. 1967. Eine neuartige Form der Abwehr von Mikroorganismen bei Insekten.Naturwiss enschaften 54:649.
Newhart, A., andMumma, R. 1979a. Defensive secretions of three species ofAcilius (Coleoptera, Dytiscidae) and their seasonal variations as determined by high-pressure liquid chromatography.J. Chem. Ecol. 5:643–652.
Newhart, A., andMumma, R. 1979b. Seasonal quantification of the defensive secretions from Gyrinidae.Ann. Entomol Soc. Am. 72:427–429.
Schildknecht, H. 1970. Die Wehrchemie der Land- und Wasserkäfer.Angew. Chem. 82:17–25.
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Classen, R., Dettner, K. Pygidial defensive titer and population structure ofAgabus bipustulatus L. andAgabus paludosus F. (Coleoptera, Dytiscidae). J Chem Ecol 9, 201–209 (1983). https://doi.org/10.1007/BF00988037
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DOI: https://doi.org/10.1007/BF00988037