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Daphnia pulex is the most common species of water flea. [3] It has a cosmopolitan distribution: ... the average intron size found in D. pulex genes is 170 bp. [17]
Daphnia is a genus of small planktonic crustaceans, 0.2–6.0 mm (0.01–0.24 in) in length. Daphnia are members of the order Anomopoda, and are one of the several small aquatic crustaceans commonly called water fleas because their saltatory swimming style resembles the movements of fleas.
Daphnia pulex. The genus Daphnia (Crustacea: Cladocera: Daphniidae) contains over 200 species of water fleas, many of which are in need of further taxonomic investigation (species inquirendae; marked with asterisks). [1]
Daphnia magna is a typical water flea of the genus Daphnia. The females reach up to 5 mm in size, the males about 2 mm, thus they are among the largest species in the genus. [2] The body is protected by a translucent carapace made of chitin, a transparent polysaccharide. [3]
Daphnia pulicaria generally live in deep, permanent lakes. [7] These lakes provide a more stable environment than temporary ponds, which eventually dry up, so populations of D. pulicaria tend to have lower mortality rates than D. pulex populations living in ponds. [7]
They are the size of a large housefly and feed only on blood. ©Jaco Visser/Shutterstock.com. The tsetse fly is the first of several insects to make our list of the 10 deadliest animals in the world.
Gillnets are designed to catch fish of a certain size when the fish’s head passes through the net, but the body gets stuck. Theoretically, larger- and smaller-sized fish would either pass ...
Five elderly African elephants at a Colorado zoo will stay there, after the state's highest court said the animals have no legal right to demand their release because they are not human. Tuesday's ...