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Scientific Name: Macrothrix laticornis (Jurine, 1820)
English Name: Water Flea
Local/Bangla Name: Pani Poka (পানি পোকা)
Zooplankton : Macrothrix laticornis

Photo: Ian Gardiner (iNaturalist)

Classification:
Kingdom: Animalia
Phylum: Arthropoda
Class: Branchiopoda
Order: Anomopoda
Family: Macrothricidae
Description:
The female of this species has a broadly oval body, with the postero-dorsal corner of the valves being crested and reticulated, featuring distinct serrations and a small posterior protuberance. The head is evenly arched, with the head shield gently widening from the tip of the rostrum onwards, and a large head pore. A ridge departs from the tip of the rostrum, forming a continuous concave arch distal to the level of the ocellus and running towards the base of the head shield. The antennules exhibit a distinct ventral angulation upon apical broadening, with several fine incisions and clusters or rows of setules or hairs on the anterior margin. The labrum has a large triangular process. The eyes are situated very near to the head margin. The postabdomen is broad, not bilobed, and bears numerous fine spines and setules, with the latter being terminal. The small claw bears setae on its concave margin. The length of the organism is approximately 0.40 mm. In terms of its life cycle, this species undergoes both sexual and asexual phases. Typically, the population consists entirely of females reproducing asexually. Under optimal conditions, reproduction occurs as early as 4-7 days of age, with each female producing broods of 4-22 offspring. Broods are produced every 1.5-2.0 days, with most females producing 2-6 broods during their lifetime. However, under adverse environmental conditions, males are produced, and sexual reproduction occurs, resulting in the production of resting eggs called ephippia, similar to those of brine shrimp eggs.
Habitat & Distribution in Bangladesh:
Commonly found in rivers in Bangladesh, such as the Halda River.
Environment:
Freshwater
Main 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