Natural Food Abundance and SIS Biodiversity of Matshaya Rani Fish Sanctuary

Abstract

An investigation was carried out in the Matshaya Rani (fish queen) Fish sanctuary to evaluate the hydrographic status, natural food and SIS (small indigenous species) abundance in the old Brahmaputra River near the BAU campus. There were three treatment sites-inside sanctuary, upstream and downstream of the sanctuary named as treatments T 1 , T 2 and T 3 , respectively. A number of water quality parameters such as temperature ( ) were recorded and were found within the suitable range for natural food and SIS in different treatments. Among all the water quality parameters, only water transparency and depth showed significant difference (P < 0.05) among the treatments. Forty three genera of phytoplankton belonging to Bacillariophyceae (10), Chlorophyceae (22), Cyanophyceae (8), and Euglenophyceae (3) and nine genera of zooplankton were identified belonging to Rotifera (4) and Crustacea (5) in all the treatments. None of plankton group except Cyanophyceae and Rotifera showed significant difference (p < 0.05) among the treatments. Thirty two species of SIS under ten groups were found in different treatments. The highest number of species was found in treatment T 1 (30) followed by T 2 (25) and T 3 (24). The catfishes, loaches and minnows dominated among thirty two species caught from the sampling sites. The highest numbers of species were found in April and May and the least species were found the month of January. Significant inter month and inter site variation (P < 0.05) in numerical abundance of fish observed in the study area. Notable endangered fishes, Kanchan puti-(Puntius conchonius), Balichata (Acanthocobitis botia), Indian torrent catfish-Amblyceps mangois and Chaka-(Chaca chaca) species were only found in Matshaya Rani Fish sanctuary. The natural food abundance and SIS diversity were significantly more in the inside of Matshaya Rani Fish sanctuary than both the upstream and downstream of the sanctuary.

Sanctuary Status on Diversity and Production of Fish and Shellfish in Sunamganj Dekar Haor of Bangladesh

“…It has been reported some threatened species as Chitala chitala, Notopterus notopterus, Gudusia chapra, Puntius sarana, Ompok pabda, Nandus nandus, etc and some endangered species like Rita rita, Sperata seenghala, Pseudeutropius atherinoides, Mastacembelus armatus, etc reappeared in the catch (DoF 2007). Several researchers (Parvez et al 2017, Hossain et al 2017, Hasan et al 2012) stated the positive impacts of sanctuary on fish and shellfish diversity which support the findings of the present study.…”

“…But due to different environmental and manmade destructive activities, natural fish stocks are declining day by day (Azher et al 2006). A good number of fishes are highly regarded for their taste and nutritive value but these are now critically endangered, endangered and vulnerable (Hasan et al 2012). Water is harmed profusely all over the country by insane interruption of human beings.…”

“…Fishes assemble in sanctuaries for shelter, lead peaceful life without any disturbance and can move freely towards feeding and breeding grounds. Fish sanctuaries have positive impact in all cases on fish production, biodiversity and socioeconomic condition of fishers (Azher et al 2006, Hasan et al 2012, DoF 2016, Hossain et al 2017. Moreover, as a part and form of fisheries management, sanctuaries are relatively easy for user communities to implement and enforce.…”

Fish sanctuary as a sustainable management tool for recovering fish biodiversity, production and livelihood: A case study on Halti Beel tank sanctuary, Bangladesh

“…However, after declaration as a sanctuary, 35 (native 30 and 5 exotic species) species were found newly available in the sanctuary area. Retrieval of fisheries species was also reported by Joadder et al (2016) in Kumari Beel sanctuary (16 species) and Hasan et al (2012) in Matshyarani fish sanctuary (32 species). Recovery rate in the present study was the highest for the order Siluriformes (11) followed by Cypriniformes (10), Periciformes (5), Osteoglossiformes (2), Cyprinidontiformes (1) and Channiformes (1) ( Figure 2).…”

Growth performance of tilapia fingerling in cage in ponds managed by Adivasi households: An assessment through length-weight relationship

“…Taiyebi (2009), reported five major groups of phytoplankton that were Bacillariophyceae, Chlorophyceae, Cyanophyceae, Euglenophyceae and Rhodophyceae from old Brahmaputra river beside Bangladesh Agricultural University, Mymensingh campus where the most dominant group was Chlorophyceae and Rotifera. Hasan (2008) also found five major groups of phytoplankton which was Bacillariophyceae, Chlorophyceae, Cyanophyceae, Euglenophyceae and Rhodophyceae from the same river Brahmaputra. Therefore it could be argued that the cage installed ponds were nutrient rich and highly productive and cage culture did not affect pond productivity.…”