Table 3 |
||
|
The different sperm kinematic parameters recorded with computer aided semen analysis (CASA) |
||
|
Parameter |
Unit |
Description |
|
|
||
|
Motility |
% |
Total motility |
|
Concentration |
×106/ml |
Number of spermatozoa |
|
VCL |
μm/s |
Curvilinear velocity along actual swimming path |
|
VSL |
μm/s |
Straight-line velocity along shortest path from start to end point |
|
VAP |
μm/s |
Average path velocity based on every 5th frame of VCL path |
|
LIN |
% |
Linearity of a curvilinear path, expressed as VSL/VCL |
|
STR |
% |
Straightness, expressed as VSL/VAP |
|
WOB |
% |
Wobble, expressed as VAP/VCL |
|
ALH |
μm |
Amplitude of lateral head displacement |
|
BCF |
Hz |
Beat cross frequency based on VCL crossing VAP per second |
|
|
||
|
van der Horst et al. BMC Evolutionary Biology 2011 11:351 doi:10.1186/1471-2148-11-351 |
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