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Scientific Name: Alona quadrangularis (O.F. Müller, 1776)
English Name: Water Flea
Local/Bangla Name: Pani Poca (পানি পোকা)
Zooplankton : Alona quadrangularis

Photo: Ian Gardiner (iNaturalist)

Classification:
Kingdom: Animalia
Phylum: Arthropoda
Class: Branchiopoda
Order: Anomopoda
Family: Chydoridae
Description:
The body of this organism is nearly rectangular, with its greatest height towards the posterior end. The corners at the back of its valves are rounded, and the posterior margin features a row of small spines on the inner side. Longitudinal lines on the valves are connected by transverse lines, forming distinct cells. The head shield has a pointed rear edge, three main connected pores on the head, and lateral pores aligned with the median main pore. Antennules possess distal setae and a sensory papilla on the rear margin, with incisions on the front margin. Antennal setae are arranged in a specific pattern. The labrum plate has a convex front margin, and the ocellus is slightly smaller than the eye. The postabdomen widens towards the end and bears 14-16 anal spines, with lateral setae grouped and arranged in a row. Each claw has a basal spine. The length of this organism ranges from 0.78 to 0.90 mm. In terms of its life cycle, this organism reproduces via parthenogenesis. The parthenogenetic female progresses through multiple adult stages and produces batches of eggs. These eggs are not released externally but instead are kept within the mother’s brood pouch for incubation. Embryonic development occurs within the brood pouch, and the offspring are released as juveniles.
Habitat & Distribution in Bangladesh:
Commonly found in rivers and wetlands in Bangladesh.
Environment:
Freshwater, Brackish, Marine
Other References:

Ahmed ATA, Kabir SMH, Ahmad M, Rahman AKA, Haque EU, Ahmed ZU, Begum ZNT, Hassan MA, Khondker M (eds.) (2008) Encyclopedia of Flora and Fauna of Bangladesh, Vol. 18. Part II. Arthropoda: Crustacea. Asiatic Society of Bangladesh, Dhaka, 226 pp

DNA Barcodes from Bangladesh
GenBank Accession Number:
Other DNA Barcodes & Nucleutide Sequences
Global IUCN conservation status:
Other Information