–  We examined seasonal variations in liver condition factor, total lipid and fatty acid composition of maturing pikeperch (Sander lucioperca) from Lake Eğirdir, Turkey. The spawning of pikeperch in Eğirdir Lake started in March, continued very fast during May and gradually ended in July as determined by measuring the gonadosomatic index. The total lipid content of male and female liver reached its highest level in September and November (the end of dense feeding period during which temperature decreased sharply), but declined to the lowest level in May (just after spawning). The highest level of liver condition factor was observed in January and March during which gonads mature rapidly. Palmitic acid was the predominant saturated fatty acid (SFA) in female and male liver. The ratio of monounsaturated fatty acids (MUFA) was higher than that of polyunsaturated fatty acids (PUFA) in both sexes. Docosahexaenoic acid (22:6n‐3), eicosopentaenoic acid (20:5n‐3) and arachidonic acid (20:4n‐6) were the predominant PUFA. Seasonal variations in PUFA were more evident than that in other fatty acids. PUFA, especially the n‐3 fatty acids ratio, increased to the maximum level during the sharp decreases in temperature (in November). However, the amount of PUFA decreased to the lowest level in reproductive period. The results suggest that the ratio of pikeperch liver fatty acids is influenced by gonad maturation and temperature variations and that pikeperch requires a large amount of PUFA and the n‐3 fatty acids for the development of gonads.

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In this study, six Ichneumonidae species were recorded for the first time in Turkey: Tromatobia ornata (Gravenhorst,1829) and Stronyglopsis abdominalis Kasparyan, 1974 (Pimplinae); Tryphon auricularis Thomson, 1883 and Thibetoides acerbus Viktorov, 1964 (Tryphoninae); Pion crassipes Homgren, 1857 (Ctenopelmatinae); and Temelucha tricolorata (Sedivy, 1968) (Cremastinae). The faunistic and distributional data notes are given for each species.

Agrothereutes hospes (Tschek.) (Ichneumonidae, Cryptinae), a solitary ectoparasitoid, is redescribed. Details of tyloids on male flagellum are presented and discussed. Investigations on the development of the parasitoid on wax moth host Galleria mellonella (L.) (Lepidoptera) were made. Longevity of A. hospes females is between 10 days and 40 days, while in males it is 7-20 days. The egg productivity and the hatching of eggs were in maximum between 6 days and 15 days. The maximal pupae ratio was between 1 days and 15 days, and average of sex ratio was 2:1.

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