Este vídeo descreve o uso de software de vídeo e rastreamento para gravar o movimento do worm em uma arena. O protocolo de exemplo mede o efeito da exposição ao etanol na locomoção de vermes.
Protocol
O protocolo a seguir é um trecho de Davies et al, An Assay for Measurement the Effects of Ethanol on the Locomotion Speed of Caenorhabditis elegans, J. Vis. Exp. (2015). Passos a serem realizados no dia anterior ao ensaio Escolha vermes de estágio L4 para placas de médio de crescimento de nematoide fresco (NGM) semeada…
Materials
C. elegans strains
Caenorhabditis Genetics Center
60 x 15 mm Petri plates, triple vented
Greiner Bio-One
628161
Other plate brands will suffice.
NGM agar
Various
NaCl (3 g/L), agar (17 g/L), peptone (2.5 g/L), 1 ml cholesterol (5 mg/ml in ethanol), 1 ml (1 M) MgSO4, 1 ml (1 M) CaCl2, 25 ml (1 M) KPO4, pH=6, 975 ml H2O
Forceps
Various
e.g., Fisher Scientific #10300
37 °C Incubator
Various
For drying agar
Copper rings
Plumbmaster
STK#35583 (48 cap thread gasket)
1.6 cm inner diameter, 1.8 cm outer diameter copper rings
100% ethanol
Various
Parafilm M
Bemis
PM996
CCD camera
QImaging
RET-4000R-F-M-12
This camera has a large field of view.
Stereomicroscope with C-mount and 0.5X objective
Leica
MZ6
Discontinued model, M60 is current equivalent.
Light source
Schott
A08923
3”x3” backlight for even illumination across the field of view
Imaging and tracking software
Media Cybernetics
ImagePro-Plus v6.0-6.3
Newer versions of the software have tracking functions.