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Scientific Name: Cyclops nanus Sars G.O., 1863
English Name: Water Flea
Local/Bangla Name: Pani Poca (পানি পোকা), Cyclops (সাইক্লপস)
Zooplankton : Cyclops nanus

Photo: Aleksandr Novikov (iNaturalist)

Classification:
Kingdom: Animalia
Phylum: Arthropoda
Class: Copepoda
Order: Cyclopoida
Family: Cyclopidae
Description:
The organism has a slender body with a clear distinction between the metasome and urosome, with the metasome consisting of four segments. The third metasomal segment is notably large, while the second and fourth segments are nearly equal in length. The metasome is approximately one and a half times longer than the urosome, including the furcal rami. The antennules are geniculated and have fewer than 13 segments. The uniramous antenna is symmetrical and four-segmented, with a long inner spine and a short outer spine at the distal end of the terminal segment of the endopod. The outermost terminal caudal seta is larger than the inner one, and the lateral caudal seta is positioned around the middle of the ramus. The organism is transparent white in color, with total length ranging from 0.63 to 0.75 mm, breadth from 0.23 to 0.26 mm, metasome length from 0.42 to 0.48 mm, and urosome length from 0.30 to 0.35 mm. The life cycle comprises six naupliar and five copepodid stages, with an incubation period ranging approximately from 12 hours to 5 days. Each female produces 7 to 13 pairs of ovisacs. Newly hatched nauplius larvae lack external segmentations, but significant changes are observed during the molt to the copepodid stage, closely resembling the adult form.
Habitat & Distribution in Bangladesh:
Commonly found in rivers in Bangladesh, such as the Halda River.
Environment:
Freshwater
DNA Barcodes from Bangladesh
GenBank Accession Number:
Other DNA Barcodes & Nucleutide Sequences
Global IUCN conservation status:
Other Information