In the present study, the effects of bilateral eyestalk ablation on molt interval, ovarian development, and hemolymph levels of ecdysteroid and vitellogenin were investigated in the giant freshwater prawn, Macrobrachium rosenbergii in order to examine the roles of the eyestalk hormones. In destalked males and females, ecdysteroid levels increased rapidly, and molt intervals were significantly s...

The giant river prawn, Macrobrachium cf. rosenbergii, is one of the most cultivated freshwater prawns in the world and has been introduced into more than 40 countries. In some countries, this prawn is considered an invasive species that requires close monitoring. Recent changes in the taxonomy of this species (separation of M. rosenbergii and M. dacqueti) require a re-evaluation of introduced t...

Predaceous fish-eating species of the order Clupeiformes have a large mouth with well-developed teeth, and reach the greatest sizes within their families (up to 90 cm). We found that the pristigasterid Chirocentrodon bleekerianus, a small clupeiform (about 10 cm) from the tropical SW Atlantic, is able to prey on proportionally large clupeoid fishes and caridean shrimps. Fish preys are folded in...

Migratory animals endure high stress during long-distance travel in order to benefit from spatio-temporally fluctuating resources, including food and shelter or from colonization of unoccupied habitats. Along with some fishes and shrimps, nerite snails in tropical to temperate freshwater systems are examples of amphidromous animals that migrate upstream for growth and reproduction after a marin...

Abstract The freshwater rivers from Shiwalik Himalayas have abundant prawn resources of high economic value and play a major role in the livelihood local fishermen. present study aimed to determine variation abundance explained by changes water quality among three different streams (Gho Manhasa stream, Chadwal stream Nagri stream). highest prawns was found Gho during premonsoon season lowest mo...

Dams have long been associated with elevated burdens of human schistosomiasis, but how dams increase disease is not always clear, in part because dams have many ecological and socio-economic effects. A recent hypothesis argues that dams block reproduction of the migratory river prawns that eat the snail hosts of schistosomiasis. In the Senegal River Basin, there is evidence that prawn populatio...

Abstract Giant prawn, Macrobrachium rosenbergii is a freshwater fishery product that requires further development. However, the high cost of commercial feed one challenges in growing giant prawns. One approach to addressing this issue use local feedstuff as an alternative ingredient. The main obstacle using limitation (anti-nutrition, crude fiber, etc.) fermentation technology can overcome. goa...

Species of the genus Anaspides, known as mountain shrimps, are endemic to Tasmania and inhabit a variety freshwater habitats such tarns, pools, creeks runnels, well caves. Until 2015 only two species Tasmanian shrimps were recognized, A. tasmaniae (Thomson, 1893), which was believed be widespread all over island spinulae from Lake St. Clair. Revision by Ahyong in 2016 recognized 7 species, most...

The scavenger receptor class B, type I (SR-BI), is a member of the CD36 superfamily comprising transmembrane proteins involved in mammalian and fish lipid homeostasis regulation. We hypothesize that this receptor plays an important role in Macrobrachium nipponense lipid metabolism. However, little attention has been paid to SR-BI in commercial crustaceans. In the present study, we report a cDNA...