M. A. Azadi

• BSc(Honours), MSc, PhD
• Professor (Retd.) at University of Chittagong

The current research focused on the diversity and morphometric variations especially the total body length (TBL) and maximum body width (MW) of zooplankton groups affected by different water bodies (extensive, semi-intensive and intensive) in Chittagong University Campus of Bangladesh. A total of 32 zooplankton species have been identified from the...

Bangladesh is blessed with many lentic and lotic water bodies. The present study was conducted to find out the condition of the water quality of the Balukhali stream of Chittagong University Campus (CUC) using the Weighted Arithmetic Water Quality Index (WAWQI). In this regard water samples were collected for one year period during January 2018 to...

Bangladesh is blessed with many lentic and lotic water bodies. The present study was conducted to find out the condition of the water quality of the Balukhali stream of Chittagong University Campus (CUC) using the Weighted Arithmetic Water Quality Index (WAWQI). In this regard water samples were collected for one year period during January 2018 to...

A total of 240 Grey Mullet (Rhinomugil corsula), collected from the Sitakunda coast of the Bay of Bengal, were used for the analysis of food and feeding habit during the period from January 2017 to December 2017. Thirteen major types of food items, viz., blue-green algae, green algae, diatoms, desmids, dinoflagellates, rotifer, copepod, cladoceran,...

Finfish richness, their abundance, fishing gears and their catch in the upper Matamuhuri river were studied from January to December 2022 along the river course at hilly upstream of Bandarban Hill District. A total of 95 freshwater finfish species under 69 genera belonging to 36 families under 14 orders were recorded in this mountainous section of...

A total of 240 Grey Mullet (Rhinomugil corsula), collected from the Sitakunda coast of the Bay of Bengal, were used for the analysis of food and feeding habit during the period from January 2017 to December 2017. Thirteen major types of food items, viz., blue-green algae, green algae, diatoms, desmids, dinoflagellates, rotifer, copepod, cladoceran,...

Reproductive biology of the Corsula Mullet, Rhinomugil corsula (Hamilton, 1822) (Mugiliformes: Mugilidae) was carried out based on 1166 (394 male and 772 female) fish samples collected monthly from the fishermen’s catch of Sitakunda coast of the Bay of Bengal, Bangladesh, from December 2016 to November 2017. Yearly male and female sex ratio were 1...

Tidal canal Madari-Khal is one of the important tributaries of the river Halda, through which nearby hill stream water, agricultural washings, and effluents (treated or untreated) of Chattogram Asian paper Mill are drained to the Halda River. In this paper water quality and pollution level of Madari Khal are presented. A one-year study was condu...

This research investigated the antihypertensive effects of tamarind products and compared their potentials based on an animal model’s data verified by molecular docking, multitarget interactions, and dynamic simulation assays. GC-MS-characterized tamarind products were administered to cholesterol-induced hypertensive albino rat models. The two-week...

This research investigated the antihypertensive effects of tamarind products and compared their potentials based on their animal model’s data verified by molecular docking, multitarget interactions in network pharmacology, and dynamic simulation assays. The GC-MS characterized tamarind products were administered to the cholesterol-induced hypertens...

The important decapod crustacean, the soft-shell crab, Scylla serrata is in great demand in different countries due to its taste next to shrimp and nutritional value, for which its farm is growing day by day as a source of income generation. This experiment was conducted for one year from January 2016 to December 2016 in Chaufaldandi, Cox’s Bazar,...

A study on the population dynamics of the Jew fish, Johnius coitor (Hamilton-Buchanan, 1822) from the Bay of Bengal, Bangladesh was conducted using FISAT-II program, with the length-frequency data of 1178 fish samples. The growth parameters like asymptotic length (Lα) and growth coefficient (K) were calculated to be 29 cm and 1.1year-1 , respective...

Boalia Khal is one of the important tributaries of the River Halda. The productivity of the Boalia Khal tributary of the Halda River mainly depends on the phytoplankton diversity. A study was conducted for two years period from January 2017 to December 2018 to identify the phytoplankton community of the Boalia Khal tributary. A total of 61 species...

An investigation was conducted to record the fish fauna, fishing gears, methods, and crafts used in Pabna and Sirajgonj districts of Chalan beel, the largest inland wetland of Bangladesh during July 2020 to December 2020. A total of 88 species of fin fish, including 78 native and 10 exotic, belonging to 9 orders, 24 families and 58 genera and 2 spe...

Species composition, abundance and diversity indices of phytoplankton and zooplankton of three ponds in Chittagong University campus were evaluated for two years period from January 2017 to December 2018. A composition of 12 phytoplankton and 33 zooplankton species were recorded in the entire study area. Anacystis cyanea as phytoplankton and Naupli...

Water quality in any water body is dependent on its physicochemical properties, the knowledge of which is necessary to maintain the suitability of the environment for aquatic organisms. In Bangladesh, the Halda River, a valuable spawning ground for the Indian major carp species is currently believed to be under threat due to anthropogenic and envir...

The River Halda is one of the important natural breeding grounds of Indian major carp (Labeo rohita, Labeo calbasu, Gibelion catla, Cirrhinus mrigala) in Bangladesh for its unique physicochemical and biological properties of water. The productivity of the Halda ecosystem mainly depends on the plankton diversity. Zooplankton directly affects the pro...

Two allied species of the genus Ophiocara Gill 1863 (Gobiiformes, Butidae) were collected from a plunge pool of a small waterfall near Himchari, Cox’s Bazar along with a number of fish samples during an exploration survey made by the IUCN team at Bandarban Hill District and Cox’s Bazar during November 2014. One of the collected fish samples was ide...

Halda River is a renowned natural spawning ground of major carps due to the unique physicochemical and biological properties of its water. The productivity of the Halda ecosystem depends mainly on the plankton diversity. A 2- year- study was conducted (Jan. 2017- Dec. 2018) to identify the phytoplankton community of the Halda River. A total of 74 s...

Study of stream insect fauna provide valuable insights into aspects of the stream channel ecosystem. The present study was conducted to investigate the aquatic stream living insect community, abundance and diversity in a hilly stream, Balukhali chora of Chittagong University campus to determine the water quality. The insects were collected with bot...

The study was carried out to survey the fresh and marine water fishes sold out in three markets of Chattagram city and socioeconomic condition of the fish retailers. Overall 29 fresh water and 24 marine water fish species were found to be sold in the three markets. Prices of fishes were higher in Kazirdewri Bazar followed by Riazuddin Bazar and Boh...

A total of 65 specimens of Rhinomugil corsula (Hamilton, 1822), measuring from 8.1 cm to 28.9 cm in total length, collected from the Sitakunda coast of the Bay of Bengal, were used for the morphometric analysis during the period between March 2016 and February 2018. Twenty seven morphometric characters were selected and studied during the investiga...

Larvicidal efficacy of Swietenia mahagoni (L.) Jacq., Aphanamixis polystachya and Mallotus nudiflorus seed and leaf extracts was evaluated on the mosquito larvae Culex quinquefasciatus Say under laboratory condition for 24 hours of exposures. Based on probit analysis, the larvicidal LC50 values of seed extracts of S. mahagoni at the application dos...

Biology of the exotic fish, Thai climbing perch, Anabas testudineus (Bloch) was studied for one year period from November 2016 to October 2017. Twenty four morphometric characters of 180 fishes were used in morphometric study. The relationships between dependent (Y) and independent (X) variables using least square method fitted straight line equati...

This study deals with the length-weight relationship and relative condition factor (Kn) of 2480 specimens of Rhinomugil corsula (Hamilton, 1822), ranging from 3.5 cm to 29.5 cm total length and 0.40 g to 235.34 g weight, sampled monthly for two years period from March 2016 to February 2018 from the Sitakunda Coast of the Bay of Bengal, Bangladesh....

For the removal of undesired fish species from aquaculture ponds, an alternative to synthetic toxins is the use of botanical toxicants which are biodegradable and environmentally safer. Toxicological effects of distilled water, 50% ethyl alcohol, methanol and acetone extracts of three indigenous plant seeds, Jatropha carcus (Linn.), Hydnocarpus wig...

Abstract: Water quality index is a helpful tool to understand the pollution level of any water body. Out of 16 tributaries in lower Halda, Boalia Khal (canal) is one of the important tributaries, well known for capture fishery and also for carrying local agricultural and urban discharges to the Halda River, a well-known spawning ground of Indian ma...

Piscicidal action of distilled water, 50% ethyl alcohol, methanol and acetone extracts of three indigenous plant seeds Jatropha carcus (Linn.), Hydnocarpus wightianus (Blume) and Aleurites moluccana (Linn. Willd) were tested for the first time upon the live Cichlid fish, Tilapia Oreochromis niloticus (Linn.) collected from a local fish hatchery. Th...

Stream water and its faunal diversity are the integral part of the environmental stability and river ecosystem. To know the abundance and diversity of fin and shell fishes in relation to its water quality, a hilly stream namely Balukhali Chara in the Chittagong University Campus was investigated during December 2016 to May 2017. A total of 1904 ind...

Faunal records are essential to understand, manage and conserve any ecosystem if altered due to anthropogenic or natural causes. In the south eastern Bangladesh five linked rivers, Karnaphuli, Halda, Sikalbaha, Chandkhali and Sangu play a significant role in the country‟s fisheries sector. In this study ichthyofauna of the three linked rivers, Karn...

Abstract: Water quality index was determined mathematically to assess the water quality of Halda River, a well known spawning ground of Indian major carps and a tributary of the River Karnaphuli in the south-eastern Bangladesh. Water quality and water quality indexes for seasonal and yearly were calculated from three selected stations situated at u...

Physicochemical characteristics of any water body should be well known before using its water for different domestic purposes and also for different management needs. In Bangladesh, pond water is generally used by the middle to low income classes’ peoples for various purposes ignoring its quality. This study was conducted on monthly basis for two y...

Abundance and diversity of zooplankton with relation to physicochemical parameters in three ponds at Chittagong University campus was conducted for two years period from January 2017 to December 2018. A total of 72 samples were collected from the three ponds, whereby 33 zooplankton species belonging to five classes were identified. Among the 5 clas...

This study was conducted for two years, from January 2017 to December 2018 to find out the phytoplankton diversity and its relationship with the physicochemical parameters of three ponds at Chittagong University Campus. Species compositions of phytoplankton was 42.86% blue-green algae, 14.29% green algae, 28.57% desmids and 14.29% diatoms in Pond 1...

This investigation is done to determine water quality of three ponds in the Chittagong University campus using eleven physicochemical factors (temperature, Secchi depth, conductivity, pH, DO, BOD, free CO 2 , calcium, TDS, total hardness and alkalinity), to find out the Water Quality Index (WQI) for human uses. WQI was determined using "Weighted Ar...

Larvicidal effects of distilled water, 50% ethyl alcohol, acetone and methanol extracts on seed of four plants viz. Sinapis alba (Linn.), Carica papaya (Linn.), Momordica charantia (Linn.) and Capsicum annuum (Linn.) were studied upon the mosquito larvae of Anopheles annularis Vander Wulp and Culex quinquefasciatus Say under normal laboratory condi...

Population dynamics of the mullet species, Rhinomugil corsula, was studied, using FiSAT-II program, with the length-frequency data of 2480 fish specimens. The asymptotic length (L∞) and growth coefficient (K) of this fish were estimated to be 31.4 cm and 1.0/year, respectively. The instantaneous rate of natural mortality (M), fishing mortality (F)...

Population dynamics of the mullet species, Rhinomugil corsula, was studied, using FiSAT-II program, with the length-frequency data of 2480 fish specimens. The asymptotic length (L∞) and growth coefficient (K) of this fish were estimated to be 31.4 cm and 1.0/year, respectively. The instantaneous rate of natural mortality (M), fishing mortality (F)...

This research aims to investigate the protective effects Leea macrophylla Roxb polyphenols on streptozotocin‐induced diabetic rats. Polyphenolic assays were undertaken through established methods. To conduct animal intervention study, forty Wistar albino male rats (average body weight 188.42 ± 7.13 g) of different groups were diabetized by streptoz...

The potential larvicidal activity of leaf, bark and seed extracts of two indigenous plants, Aegle marmelos and Pongamia pinnata was studied against the third and fourth instars of Culex quinquefasciatus Say larvae. Larval mortality was observed after 24 hours of application. Both the two plants had shown effectiveness as larvicide against the C. qu...

The horned carp, Schismatorynchos nukta (Sykes, 1839) has been recorded for the first time from Bangladesh geographical area under the investigated genus of Schismatorynchos (Bleeker 1855). This fish was collected from seine net catch while exploring the hilly upstream of Sangu river at Tindu and Remakri (Thanchi, Bandarban, Bangladesh) during wint...

Water hyacinth (Eichhornia crassipes) has been used in phytoextraction to uptake heavy metals and trace elements in various experiments. This research investigated the protective effects of Water hyacinth extracts on Lead (Pb)-induced toxicity in the albino rat. Forty-eight six-weeks-old Wistar albino male rats (average weight, 180 ± 6.45 g) were d...

Fish exploitation of the Halda River was investigated for two years period from January 2007 to December 2008 to know the variation of CPUA (Catch Per Unit Area kg.ha-1year-1) among the three studied sections, months and between two years. The mean CPUA for pooled data was 295.685, 433.219, 524.449 and 411.887 kg.ha-1year-1 for the year 2007 and 41...

Fish exploitation of the Halda River was investigated for two years period from January 2007 to December 2008 to know the variation of CPUA (Catch Per Unit Area kg.ha-1year-1) among the three studied sections, months and between two years. The mean CPUA for pooled data was 295.685, 433.219, 524.449 and 411.887 kg.ha-1year-1 for the year 2007 and 41...

Activation of the sonic hedgehog (Shh) signaling pathway controls tumorigenesis in a variety of cancers. Here, we show a role for Shh signaling in the promotion of epithelial-to-mesenchymal transition (EMT), tumorigenicity, and stemness in the bladder cancer. EMT induction was assessed by the decreased expression of E-cadherin and ZO-1 and increase...

Finfish fauna investigation of the Padma-Meghna confluence, the biggest river-confluence of Bangladesh at Chandpur, was made on monthly basis from June 2014 to February 2015. During the study period a total of 1 053 catch-samples of fishes by I 3 different gears (viz. gill net, seine net, set bag net, lift net, cast net. drag net, traps, barriers,...

To determine the catch efficiency of fishing gears, catch per unit effort (CPUE) data were collected for two years during January 2007 to December 2008 from the river Halda. Analyses were done to examine the variation of CPUE among gears, studied sections, months and years. The mean CPUE for pooled data of all gears was 2.247±0.265 kg.gear-1day-1 a...

To determine the catch efficiency of fishing gears, catch per unit effort (CPUE) data were collected for two years during January 2007 to December 2008 from the river Halda. Analyses were done to examine the variation of CPUE among gears, studied sections, months and years. The mean CPUE for pooled data of all gears was 2.247±0.265 kg.gear-1day-1 a...

An investigation was carried out on the water quality and abundance and diversity of insects in the two different zones (the Pool zone and the Riffle zone) of a hilly stream (Mitha Khal) of Chittagong University campus during one year study period from January 2011 to December 2011. During the study period a total of 1,005 insects were collected be...

not availableBangladesh J. Zool. 42(2): 301-303, 2014

Although the Extent of Occurrence of Ceriodaphnia reticulata is higher than the threshold level, it meets Vulnerable Category as its Area of Occupancy is much lower. The number of locations of its occurrences is less than ten and furthermore, there is a continuing decline in the Extent of Occurrence, Area of Occupancy, water quality and habitat due...

Awaous guamensis is fairly common within its habitat ranges. The estimated Extent of Occurrence (67969.46 km²) and Area of Occupancy (2,237.03 km²) of this species are much higher than the upper threshold values for any threatened category. There is no known major threat to the fish. So, A. guamensis is assessed as Least Concern.

The species is fairly common and widely distributed along the coast line, estuaries and lower tidal rivers of Bangladesh. No major threat is reported, so the species is considered as Least Concern.

This fish is known only from a secondary literature (Rahman and Akhter 2007) and from a single studied specimen of unknown origin of collection (Rahman 2005). It may be marine or estuarine species which enters freshwater. No data is available on its population size, population trend or threats. Therefore, it is considered as Data Deficient.

Chela cachius is fairly common and widespread species in all freshwater habitats (haor, baor, beels, floodplain, canals, ditches, ponds, rivers and streams) in Bangladesh. Recent survey indicates that its population has declined over 30% in last ten years due to pollution (industrial effluents, pesticides and agrochemicals) and habitat destruction....

The species has wide range of distribution and abundant in almost all the estuaries and tidal rivers throughout the country and no major threat is recognized. So, the species is justified as Least Concern.

Macrobrachium malcolmsonii is abundant in the tidal inundated freshwater bodies and tidal rivers of Bangladesh. Due to wide distribution and without any major threats, the species is considered as Least Concern

Macrobrachium birmanicum is widely distributed in the different freshwater and tidal rivers of Bangladesh. In view of this wide distribution as well as the lack of major threats, the species is considered as Least Concern.

Macrobrachium mirabile is common in the river systems of Bangladesh. On the basis of wide distribution and in the absence of major threat the species is considered under Least Concern.

Macrobrachium dayanus is widely distributed and commonly found in River systems of Bangladesh. There is no major threat to this species. The species is therefore listed as Least Concern.

Macrobrachium dolichodactylus is common in the river systems of Bangladesh. Due to its large natural range and the absence of any known major threats, the species is considered as Least Concern.

Macrobrachium villosimanus is widely distributed in tidal rivers, estuaries and tidal inundated water bodies and beels of Bangladesh. The species has wide distribution and presently there is no major threat to it. The species is therefore listed as Least Concern.

Faunistic survey of the aquatic insects collected from nine stations of the three experimental ponds of Chittagong University campus was made for a period of twelve months (November’12 to October’13), whereby a total of 2490 aquatic insects were collected. Representatives belonging to the six orders, seven suborders, twenty one families and forty o...

Halda River is declared as Ecologically Critical Area (ECA). Some suggestions and recommendations are provided in this paper to protect and conserve the River along with its four linked Rivers, i.e. Karnaphuli, Sangu, Chandkhali and Sikalbaha from where major carps migrate in the Halda River during monsoon (April-June) for spawning.

Toxicological effects of distilled water, 50% ethyl alcohol, methanol, 50% methanol, acetone and 50% acetone extracts of three medicinal plant seeds Terminalia chebula (Retz), Phyllanthus emblica (L.) and Terminalia bellerica (Roxb.) were studied upon the predatory fish, Heteropneustes fossilis (Bloch) and the omnivore fish, Oreochromis niloticus (...

Toxicological effect of the indigenous plant Tectona grandis (Linn.) were studied on the predatory fish Heteropneustes fossilis (Bloch) under laboratory conditions, in the University of Chittagong from January to December, 2009. Three different extracts – Distilled water, 50% ethyl alcohol and absolute ethyl alcohol extracts of T. grandis plant par...

Abundance and diversity of aquatic insects was studied in two water bodies, (a pond and a lake) of Chittagong University campus during October 2009 to September 2010. A total of 4406 insects belonging to 32 genera, under 20 families and 6 orders were recorded. In both the water bodies, the representatives of the orders Hemiptera and Odonata were th...

A five months study from September 2012 to January 2013 was conducted on the commercial fish and fishery of a section of the river Karnaphuli (from Kalurghat Bridge point to Shah Amanat Bridge point), to know the commercial finfish and shellfish fauna, their production and price, and fishing gears used to harvest them. The data and information were...

Piscicidal properties of distilled water, 50% ethyl alcohol and 100% ethyl alcohol extracts of dry seeds of Albizzia procera (Benth), Annona reticulata (Linn.) and dry seed kernels of Achras zapota (Linn.) were studied on two predatory fish, Heteropneustes fossilis (Bloch) and Channa punctatus (Bloch) under normal laboratory conditions. Percentage...

Eighty-three species of finfish belonging to 13 Orders, 35 Families, and 69 genera including three exotic species, and 10 species of shellfish (crustaceans) under one order, 3 families and 3 genera were identified from the River Halda during September 2004 to December 2011. Thus a total of 93 species of Ichthyofauna (finfish and shellfish) were rec...

Aquatic insects are the most widely used organisms in freshwater biomonitoring studies as a reliable and relatively low cost pollution indicator of the water bodies. Aquatic insects of the present study were collected during January 2011 to December 2011 from two different aquatic zones namely Pool zone and Riffle zone of a hilly stream known as Mi...

Activation of fibroblasts and their differentiation into myofibroblasts, excessive collagen production and fibrosis occurs in a number of bladder diseases. Similarly, conversion of epithelial cells into mesenchymal cells (EMT) has been shown to increase fibroblasts like cells. TGF-β1 can induce the EMT and the role of TGF-β1-induced EMT during blad...

Haemolytic effects of different extracts of five indigenous plant seeds viz. Datura innoxia (Mill) (Shada Dhutra), Clerodendrum viscosum (Vent.) (Vat), Amoora rohituka (Roxb.) Wt. ct. Arnott (Pitraj), Acacia auriculiformis A. Cunn. Ex. Benth. (Akashmoni) and Pongamia pinnata (L.) Pierre (Karinja) were studied upon a predatory fish, Singhi, Heteropn...

Piscicidal properties of part extracts (seed, leaf and bark) of two indigenous plants, Pongamia pinnata (L.) Pierre and Clerodendrum viscosum (Vent.) were studied on Heteropneustes fossilis (Bloch). A number of histopathological lesions was observed in the tissues of intestine, gill and liver of the fish which were treated with 50% ethyl alcohol ex...

Length frequency based population dynamics of the small indigenous cyprinid fish, Amblypharyngodon mola (Hamilton) from the Kaptai Lake (an artificial water reservoir), Bangladesh were studied using the computer based FiSAT program. Growth parameters Lα and K were found to be 104.65 mm and 0.95 per year respectively. The annual rate of natural (M),...

Gonialosa manmina was found to spawn once in a year from February to July in the Kaptai Lake. The fish was found to attain sexual maturity at 80 mm total length. Sex ratio of male and female was 1:2.39 (?2 = 26.25, df = 1, P<0.01). Female dominated significantly over male throughout the year. Seven stages of maturity were determined on the basis of...

Acute toxicity tests were carried out with aqueous and ethanolic extracts of three botanicals Lagerstroemia speciosa (L.) Pers, Dipterocarpus turbinatus Gaertn and Hevea brasiliensis (Willd. Ex Juss) on Heteropneustes fossilis (Bloch) under normal laboratory conditions. Extracts of L. speciosa were more potent than the extracts of D. turbinatus and...

The piscicidal properties of the seed, leaf and bark of the indigenous plants, Karenja Pongamia pinnata (L.) Pierre and Vat Clerodendrum viscosum (Vent.) were studied on the predatory fish Singhi, Heteropneustes fossilis (Bloch) under laboratory conditions. Distilled water, 50% ethyl alcohol and absolute ethyl alcohol extracts of the plant parts of...

Toxicological properties of the indigeneous plant Achras zapota (Linn) (Family: Sapotaceae) (locally known as 'Safeda' in Bangla) were assessed on two predatory fishes, Heteropneustes fossilis (Bloch) and Channa punctatus (Bloch), after 24 h exposure under normal laboratory conditions (25 ± 3ºC). Distilled water, 50% and absolute ethyl alcohol solv...

The haemolytic effects of distilled water, 50% ethyl alcohol and 100% ethyl alcohol extracts of three plant seeds, Fulkoroi (Samanea saman), shegoon (Tectona grandis) and Gargan (Dipterocarpus turbinatus) were studied on a predatory fish Heteropneustes fossilis under laboratoary conditions. Comparative data of control and treated fishes showed that...

Haemolytic effects of different extracts of five indigenous plant seeds viz. Datura innoxia (Mill) (Shada Dhutra), Clerodendrum viscosum (Vent.) (Vat), Amoora rohituka (Roxb.) Wt. ct. Arnott (Pitraj), Acacia auriculiformis A. Cunn. Ex. Benth. (Akashmoni) and Pongamia pinnata (L.) Pierre (Karinja) were studied upon a predatory fish, Singhi, Heteropn...

Toxicity of seed extracts of four indigenous plants, Luffa acutangula (Roxb.), Areca catechue (Linn.), Brassica nigra (Linn. Koch.) and Brassica hirta (Monech) was tested on three predatory fishes- Heteropneustes fossilis (Bloch), Anabas testudineus (Bloch) and Channa punctatus (Bloch) under normal laboratory conditions. Due to the toxic effect of...

Histopathological changes in the gill, liver and intestine of Heteropneustes fossilis (Bloch) after 24 hours exposure being treated with 50% ethyl alcohol extract of the three plant parts of Tabarnaemontana divaricata (L.) were observed under light microscope. The principal degenerative changes in the gills included distorted, spread and hollowed g...

Haemolytic effect on blood parameters and blood cells of the experimental fishes Heteropneustes fossilis (Bloch) was made after 24 hrs exposure to distilled water, 50% ethyl alcohol and absolute ethyl alcohol extractsof Tabarnaemontana divaricata (L.) plant parts. These plant part toxicants inducing toxicity was found evident from decreased RBC cou...

Biodiversity of fin-fish and shell-fish species in three sections of Halda River, Bangladesh were investigated for two years from January 2007 to December 2008. Proportion of average daily catch (in number) was used to obtain the diversity indices. Simpson index of diversity (D) (0.54 - 0.66), Shannon index (H) (0.25 - 0.32) (re-scaled), and Evenne...

Toxicological and haemolytic effects of distilled water, 50% ethyl and absolute ethyl alcohol extracts of the dry leaf, bark and seeds of the indigenous plant Madhuca indica Gmel were tested on the predatory fish, Heteropneustes fossilis (Bloch) under normal laboratory conditions. Mortality of the fishes varied depending on the plant part extracts...

Toxicological and haemolytic effects of distilled water, 50% ethyl alcohol and 100% ethyl alcohol extracts of Tamarandus indica (L.), Carica papaya (L.) and Litchi chinensis (L.) seeds, Anacardium occidentale (L.) and Mimusops elengi (L.) seed kernels, and Camellia sinensis (L.) O. Kuntze seed cake, were studied on the predatory fish, Heteropneuste...

Food and feeding habits of Gonialosa manmina were done by the analysis of 197 guts of the fish using both occurrence and point methods and also by the Index of preponderance. As per Index of preponderance, the preferred food items were graded as cladocerans (65.34%-1st), copepods (20.96%-2nd), miscellaneous (8.89%-3rd), rotifers (2.81% 4th) and bac...

Food and feeding habits of Gonialosa manmina were done by the analysis of 197 guts of the fish using both occurrence and point methods and also by the Index of Preponderance. As per Index of Preponderance, the preferred food items were graded as cladocerans (65.34%- 1st), copepods (20.96%- 2nd), miscellaneous (8.89%- 3rd), rotifers (2.81%- 4th) and...

Toxicological effects of the dry seeds, leaves and barks of Acacia auriculaeformis ( A. Cunn. Ex Benth.) and Mesua ferrea (Linn.) were studied on a predatory fish Heteropneustes fossilis (Bloch) under normal laboratory conditions. The different concentrations of the plant parts were used to calculate the LC50, relative potency, chi-square and F-val...