An Image-Based Key to the Zooplankton of North America



Video Clips
Techical Requirements
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Types of Movies found in this key

1) Live videos of organisms: Videos were taken of organisms freshly collected in the field. The links to videos on this page are also found near the bottom of the species page for that organism. 2) Virtual Focus: Videos capturing the microscopic anatomy of an individual organism. These interactive videos allow you to discern key features by adjusting the depth of focus on a particular characteristic of the organism. 3) Sampling methods: Videos, covering a range of methods for collecting plankton. These videos demonstrate sampling techniques and include underwater views of how standard sampling devices operate in situ. 4) Dissection demonstration: To assist with dissection of calanoid and cyclopoid copepods, we have included video clips of procedures as seen through a dissecting microscope.

Organisms Videos: Alphabetical

New Aglaodiaptomus -- A. leptopus mating New Alewife -- Alosa pseudoharengus feeding on Daphnia Asplanchna -- Witness the Miracle of Life New Asplanchna -- Asplanchna feeding on Synchaeta Bosmina -- B. longirostris swimming Bosmina -- B. longirostris feeding Calanoid -- Calanoid swimming Calanoid -- Calanoid feeding Ceriodaphnia -- Ceriodaphnia swimming with cameo appearance by Bosmina Chaoborus -- C. punctipennis eats C. dubia Chaoborus -- C. americanus eats D. rosea New Conochilus -- Many C. hippocrepis colonies Conochilus -- Movement of individual Conochilus within a colony Chydorus -- Chydorus swimming Chydorus -- Chydorus feeding Cyclopoid -- Cyclopoid feeding New Daphnia -- Daphnia feeding on Nannochloropsis New Daphnia -- Daphnia heartbeat Daphnia -- 3 Daphnia magna swimming Daphnia -- Daphnia magna molting Daphnia -- Daphnia magna mating New Daphnia -- Daphnia mendotae rejects cyanobacteria Daphnia -- Daphnia parvula collects rotifer Daphnia -- Daphnia lumholtzi swimming and feeding	Daphnia -- D. lumholtzi swimming Euchlanis -- E. triquerta swimming Eubranchipus -- Eubranchipus swimming New Gastropus -- Gastropus feeding Harpacticoid -- Harpacticoid swimming New Holopedium -- Close up of H. gibberum feeding Holopedium -- H. gibberum feeding Hydracarina -- Water mite stranded in a petri dish Kellicottia -- Kellicottia swimming Keratella -- Keratella swimming Keratella -- K. tauracephala swimming Leptodora -- L. kindti swimming Leptodora -- L. kindti swimming and bending Macrocyclops -- M. albidus mating New Mosquito -- Mosquito larva feeding New Nepidae -- Feeding on Daphnia New Ostracods -- General behavior Polyarthra -- Polyarthra swimming Polyphemus -- P. pediculus feeding Polyphemus -- P. pediculus swimming Schapholeberis -- Schapholebaris swimming in the neuston. New Sida -- S. crystallina feeding and blood flow Synchaeta -- Synchaeta swimming
Virtual Focus

Bosmina -- Sensory bristle of B. longirostris Bosmina -- Pecten of B. longirostris Calanoid -- Female 5th leg Ceriodaphnia -- Pecten of C. dubia Ceriodaphnia -- Pecten of C. reticulata Ceriodaphnia -- Mandible of C. reticulata Conochilus -- Stalkless Conochilus (320x) Conochilus -- Stalkless Conochilus (640x) Daphnia -- Close up of head shield groove of D. magna Daphnia -- Fine pecten of Daphnia dubia Daphnia -- Intermediate size pecten of Daphnia parvula Daphnia -- Intermediate size pecten of Daphnia retrocurva Daphnia -- Fine pecten of Daphnia rosea Eubosmina -- Dorsal notches on mucro of E. hagmanni Eubosmina -- Proximal pecten of E. hagmanni Eubosmina -- Sensory bristle of E. longispina at tip of rostrum (320x)	Eubosmina -- Sensory bristle of E. longispina (640x) Eubosmina -- Ventral notches on mucro of E. longispina Eubosmina -- Proximal pecten of E. longispina Ectocyclops -- Antennae with <11 segments of E. phaleratus Ectocyclops -- Hairy caudal ramus of E. phaleratus Keratella -- Illustrates cup shape of the rotifer K. earlinae Keratella -- Illustrates cup shape of the rotifer Keratella Mesocyclops -- Antennae with >17 segments of M. edax Mesocyclops -- Female 5th leg of M. edax (400x) Mesocyclops -- Female 5th leg of M. edax (640x) Mesocyclops -- Angled view of hyaline of M. edax (400x) Mesocyclops -- Angled view of hyaline of M. edax (640x) Mesocyclops -- Hairy caudal ramus of M. edax Mesocyclops -- Lateral setae at middle of rami of M. edax Skistodiaptomus -- 5th leg of male S. pygmeus
Sampling Methods
Meyer Bottle Sampler -- One of the simplest and earliest methods used to obtain water samples at depth. Bongo Net -- A pair of plankton nets towed together to obtian replicate samples or samples using different mesh sizes. Kemmerer Bottle -- An early and widely used water bottle for collecting water samples at depth. Juday Trap -- A mechanical framed trap used to collect a fixed volume of water that passes through a plankton net (forerunner to Schindler Patalas trap). Rigid Tube Sampler -- A simple device for shallow integrated sampling. Field Processing of Plankton Samples -- Effective method for concentrating zooplankton samples. Gravity Water Sampler -- A simple water sampler activated by tugging the line. "Jerk" Closing Net -- Used for sampling plankton at depth intervals. Messenger Closing Net -- Used for sampling plankton at depth intervals. Peristaltic Pump -- Small volume sampling at specific depths. Van Dorn Water Bottle -- Used for collecting water at discrete depths. Grazing Chamber-- Designed to measure feeding rates of zooplankton.
Dissection Demonstration
Copepod dissection- Dissection of the 5th leg