Flashing is interpreted as a defensive response to potential predators. with a Vickers M41 Photoplan fluorescence microscope with incident illumination.
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#Vickers photoplan free
Free shipping Free shipping Free shipping. We suggest that the unique anatomical and physiological characteristics of the luminescent system are related to the specialised ecological niche occupied by this species. Vickers Photoplan Microscope w / 1 Objective, 1 Lamp. Approximately 100 labelled lymphocytes were counted and classified into the following. conifera swims at Reynolds numbers of 10 to 50, and is normally associated with surfaces (e.g. scanned under a Vickers photoplan fluorescence micro- scope. The cytoplasm contains an extensive endoplasmic reticulum. The gland gross morphology is highly variable although each gland appears to be unicellular. Video observations show that individual glands flash repeatedly and the flash propagates along their lenght. Individual flashes had a maximum measured flux of 7.5 × 1010 quanta s−1, and the flash rate follows the stimulus frequency up to 30 s−1. Intact copepods can produce several hundred flashes before the luminescent system is exhausted.
Nevertheless each gland opens to the exterior by a simple valved pore. Bioluminescence is produced in the form of short (80 to 200 ms duration) flashes from within each gland and there is no visible secretory component. The small poecilostomatoid copepod Oncaea conifera Giesbrecht bears a large number of epidermal luminous glands, distributed primarily over the dorsal cephalosome and urosome.