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Full-Text Articles in Animal Sciences
The Structure And Defensive Efficacy Of Glandular Secretion Of The Larval Osmeterium In Graphium Agamemnon Agamemnon Linnaeus, 1758 (Lepidoptera: Papilionidae), Jagannath Chattopadhyay
The Structure And Defensive Efficacy Of Glandular Secretion Of The Larval Osmeterium In Graphium Agamemnon Agamemnon Linnaeus, 1758 (Lepidoptera: Papilionidae), Jagannath Chattopadhyay
Turkish Journal of Zoology
Histomorphological study of the larval (final instar) osmeterium gland in Graphium agamemnon agamemnon Linnaeus shows that each fully protruded Y-shaped osmeterium is composed of 2 elongated hollow tubular arms, which arise from a basal peduncle. The surface of the osmeterium has irregular folds, and papillae arise from some cells. There is an oval opening (gland pore, structurally less complicated than in other evolved species) in the proximal second seventh of the segment on each tubular arm on its posterior face. Histologically, 2 main types of secretory cells can be observed (excluding the muscle fiber cells and supporting cells): i) ellipsoid …
Studies On Sediment Toxicity Bioassays Using Chironomus Thummi K., 1911 Larvae, Levent Bat, Mehmet Akbulut
Studies On Sediment Toxicity Bioassays Using Chironomus Thummi K., 1911 Larvae, Levent Bat, Mehmet Akbulut
Turkish Journal of Zoology
The acute toxicity of zinc, copper and lead to freshwater dipteran Chironomus thummi larvae was evaluated by static bioassays, calculating the LC_{50} (lethality concentration for 50%). Mortality increased with increasing concentrations of zinc, copper and lead. The LC_{50}s of Zn, Cu and Pb for survival were 11.2, 19.1 and 14.3 µg g^{-1}, respectively. The results indicated that Zn had the greatest toxicity, followed by Pb and Cu. Individual weight increased with increasing Cu, Zn and Pb concentrations. The results are discussed and compared with those of other studies.
The Effect Of Salinity On Larval Growth And Survival Of Penaeus Indicus (Decapoda: Penaeidae), Metin Kumlu
The Effect Of Salinity On Larval Growth And Survival Of Penaeus Indicus (Decapoda: Penaeidae), Metin Kumlu
Turkish Journal of Zoology
This study was conducted to determine optimum salinity for the larval growth, survival and development of Penaeus indicus. For this, PZI (protozoea 1) larvae were stocked in 2-L round bottom glass flasks in two replicates at 20, 25, 30 and 35 ppt salinities and were reared on live diets until PL (postlarvae) stages. Highest survival (91%) and greatest growth (6.48 mm) at postlarval stages (PLI/2) were obtained with the larvae cultured at 25 ppt (P