Pond Life: Cladocera (Water Fleas)

Daphniidae: Daphnia pulex, the common water flea

Swims with a characteristic jerky motion

Daphnia pulex

Projectina Microscope
Objective: Watson x4 parachromat
Ocular: Watson x8 compensating
Polarised light/retardation filter + substage wheelstop
Stack of four images combined (Combine4z)

D pulex with young

Projectina
Objective: 10x macro
Ocular: Wild 10x photo
Illumination: DG wheelstop
Top lens of substage condenser removed
Specimen from Dipping Pond 2 Warnham 19-Feb-04

Female with brood in brood pouch

Daphnia pulex

Warnham, June/July 2003. Rear view., Dipping Pond 1

Aiptek Pocket Cam 3 Mega mounted on a Wild stereo zoom microscope with M8 body.

D pulex with eggs

Another female with eggs.

Projectina microscope
10x macro objective
Olympus P15 ocular
Transmitted light, no substage

Camera: Aiptek Pocket Cam 3 Mega
Specimen from Warnham Mill Dipping Pond 2, 28-Dec-2003

Daphniidae: Ceriodaphnia reticulata

 

Ceriodaphnia reticulata

Ceriodaphnia reticulata

Microscope: Zeiss Standard 16
Objective: Zeiss x10 plan achromat
Ocular: Olympus P15
Sample from WLNR 28 May 2007
Main pond (Heron Bird Hide)
above: 8 images/Helicon Focus
left: 12 images/Helicion Focus

 

Daphniidae: Simocephalus vetulus

 

Simocephalus vetulus

Warnham, June/July 2003, Dipping Pond 1

Aiptek Pocket Cam 3 Mega mounted on a Wild stereo zoom microscope with M8 body.

Simocephalus vetulus

Warnham, June/July 2003, Dipping Pond 1

Aiptek Pocket Cam 3 Mega mounted on a Wild stereo zoom microscope with M8 body.

Simocephalus vetulus

Warnham, June/July 2003, Dipping Pond 1

Aiptek Pocket Cam 3 Mega mounted on a Wild stereo zoom microscope with M8 body.

Simocephalus vetulus

Female with young in brood pouch

Projectina
x10 macro objective
Olympus P15 ocular
DG illumination with substage condenser top lens removed
Camera: Aiptek Pocket Cam 3 Mega
Sample from Warnham Nature Reserve Dipping Pond 2
28 Dec 2003

Simocephalus vetulus

Projectina Microscope
Objective: 10x macro
Ocular: Wild x10 photo
Substage condenser with top lens removed
DG wheelstop
Sample from Warnham, Dipping Pond 3 19-Feb-2004

Simocephalus vetulus

Projectina
Objective: 10x macro
Ocular: Wild x10 photo
Substage condenser with top lens removed
DG wheelstop
Sample from Warnham, Dipping Pond 3 19-Feb-2004

Chydoridae: Eurycercus lamellatus

This is the largest British member of this family and is a smooth and fast swimmer

Eurycercus lamellatus

Specimen from Warnham Mill Pond August 2005

Zeiss GFL Microscope
Objective: Zeiss Plan x1.6 - x5
Ocular: Watson x8 Compensating
Brightfield
Camera: Canon Powershot S50
ISO200, F4.9, 1/400 sec

Eurycercus lamellatus

Projectina Microscope
Objective: 10x macro
Ocular: Wild x10 photo
Substage condenser with top lens removed
DG wheelstop
Sample from Dipping Pond 2 Warnham 19-Feb-2004

 

Chydoridae: Chydorus sphaericus

In contrast to its cousin Eurycercus, this is one of the smallest British Cladocerans

Chydorus sphaericus

Eggs are just visible in the brood pouch (darker area on left of image).

Projectina microscope
Objective: 20x Achromat
Ocular: Olympus P15
Illumination: Rheinberg, software adjusted to give more natural colouring (original was bright pink on blue)
Combination of 13 images by CombineZ4, retouched to soften artefacts
Camera: Aiptek Pocket Cam 3 Mega

Sample from Warnham, Dipping Pond 2, 28-Dec-2003
but viewed 13-Jan-2004

Chydoridae: Pleuroxus uncinatus

 

Bosminidae: Bosmina longirostris

 

Peuroxus uncinatus

Microscope: Zeiss Standard 16
Ocular: Olympus P15
Objective: Zeiss x10/NA 0.22 plan achromat
Brightfield
Sample from Warnham LNR main pond 28 May 2007
38 images/Helicon Focus

Bosmina longirostris

Microscope: Zeiss Standard 16
Ocular: Olympus P15
Objective: Zeiss x25 plan achromat
Brightfield
Specimen from WLNR main pond, 28 May 2007
27 images/Helicon Focus

 

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