Ibrahim Rashid - Academia.edu (original) (raw)

Papers by Ibrahim Rashid

Asian Journal of Biology

A study was conducted to determine the breeding season of endangered Nandus nandus by observing f... more A study was conducted to determine the breeding season of endangered Nandus nandus by observing fecundity, somatic indexes, and gonadal cycle development year-round. Samples were collected from different fish landing centers of Sadar Upazila of Gazipur district. GSI values of N. nandus ranged from 4.26 ± 0.45 to 10.28 ± 0.39 while the maximum and the minimum GSI values were observed in July and in October, respectively. However, GaSI values showed an inverse relationship between them. The fecundity of this fish varied from 11176 ±593 to 18030 ± 1704 with the mean fecundity value of 13534.87 ± 87.53. Interestingly the highest fecundity was 18030 ± 1704 in July and the lowest fecundity was 11176 ± 593 in March, implying that the fecundity increased with the increment of time. Histological observation of ovary confirmed the presence of undeveloped oocyte (UO) to mature (M) stages of oocytes in fishes from March to November. The mature stages of oocytes including yolk vesicle’s (YV), yo...

Bangladesh journal of fisheries, Mar 28, 2022

Influence of stocking density on growth and production of Mystus cavasius (local name: gulsha) in... more Influence of stocking density on growth and production of Mystus cavasius (local name: gulsha) in circular shaped cages was studied in earthen pond conditions for a period of 90 days. The cages were uniform in size of 1.80 m 3 and were stocked with gulsha fry at the rate of (i) 200 fry/ m 3 (T1), ii) 300 fry/ m 3 (T2), and (iii) 400 fry/ m 3 (T3). No significant differences were observed among the treatments in weight gain {11.46±0.16g (T1); 11.40±0.14g (T2); 11.48±0.04g (T3)}, SGR {2.77±0.06 (T1); 2.70±0.10 (T2); 2.71±0.09 (T3) day-1}, and survival rates {87.3±6.6 (T1); 85.7±4.7 (T2); 84.9±5.4 (T3) %}. A significantly higher (p<0.05) gross production of 4.29±0.32 kg/ m 3 in 90 days was obtained in T3 (400 fry/ m 3) treatment compared to T2 and T1. The coefficient of determination values (r 2) of length-weight relationship (LWR) was 0.95, 0.94, and 0.94 in T1, T2, and T3 treatments, respectively indicating a good linear regression between length and weight. The results demonstrate that the cage culture of gulsha in pond condition is possible where 400 fry/ m 3 stocking density in circular shaped cages may be suitable for higher growth, survival and production.

SSRN Electronic Journal, 2021

The present study was conducted to assess microbiological quality of dried salted Hilsa (Tenualos... more The present study was conducted to assess microbiological quality of dried salted Hilsa (Tenualosa ilisha) samples collected from three different fish retailed markets (Chandpur, Chittagong and Narsingdi) and control samples prepared in laboratory environment. This study revealed that total plate count (TPC) in retail markets and control samples ranged from 5.75±0.35×10 to 8.74±0.39×10 cfu/g and 2.23±0.15×10 to 3.13±0.20×10 cfu/g, respectively. In samples of retail markets total fungal count (TFC) ranged from 5.67±0.30×10 to 7.43±0.25×10 cfu/g, TFC in control samples ranged from 1.15±0.10×10 to 2.47±0.21×10 cfu/g. It also found that total coliform count (TCC) in retail market and control samples ranged from 73.27±16.74 to 94.03±20.14 MPN/g and 20.11±2.39 to 31.45±5.74 MPN/g, respectively. Both samples for all counts, the highest TPC was found in Narsingdi sample and the lowest was in Chandpur sample. Besides this, 25 dry salted Hilsa samples from each three sources were analyzed to ...

A study was directed to assess probiotic-enrich dietary effect on the reproductive performance an... more A study was directed to assess probiotic-enrich dietary effect on the reproductive performance and larvae growth produced from the brood fish of Ompok pabda for 60 days. A total of 120 pairs of broodfish was used and fed with diets incorporating different levels of probiotic viz. 0 (served as a control), 0.6, 0.8 and 1.0g / kg diet under 4 treatments, i.e. PRO0, PRO1, PRO2 and PRO3 having 3 replications of each. After feeding trials, the brood fish were induced to breed with equal doses of ovaprim i.e. 0.5 and 1.2ml/kg body weight for male and female, respectively and subsequently larvae were produced. The experimental fish were observed for the success in reproductive performance like Gonado Somatic Index (GSI), fecundity, percentage of fertilization, percentage of hatching, percentage of deformed and formed larvae. GSI (10.24±0.94), fertilization rate (76.07±1.67) and percentage of hatching (78.65±4.17) found increased in PRO2 treatment. Likewise, in case of growth rate PRO2 also ...

The effects of short-term storage on the motility and fertilization rate of Barbonymus gonionotus... more The effects of short-term storage on the motility and fertilization rate of Barbonymus gonionotus semen were evaluated at different storage period. The best quality semen in terms of spermatological parameters were diluted with 5 different extenders viz. skim milk with fish ringer, glucose based extender, Alsever's solution, egg yolk citrate and urea egg yolk at a ratio of 1:4, 1:6 and 1:9. Glucose based extender and skim milk with fish ringer solution at 1:4 and Alsever's solution at 1:9 dilution ratios showed significantly the best equilibrium sperm motility (>80%). Similarly, the highest motility was obtained from semen stored for 30h with glucose based extender in portable ice box with ice at ~2°C. In fertilization trials, Alsever's solution, glucose based extender and skim milk with fish ringer solution presented 5.85%, 33.66% and 9.03% fertilization rate respectively after 24h of storage period compared to fresh sperm. Therefore, it can be concluded that glucose based extender is the best extender than the other extenders used in this study for the short term preservation of silver barb semen.

International Journal of Agriculture and Forestry, 2017

The present study was conducted to assess the loads and impacts of agrochemicals used at Rajnagar... more The present study was conducted to assess the loads and impacts of agrochemicals used at Rajnagar upazilla near the Kawadighi haor. Data were collected from 180 farmers, 100 fishermen and 12 agrochemicals dealers through questionnaire interview. Most of the farmers were marginal farmers (47%). Amount of crop land used by 180 farmers was 239.258 hectors. Maximum farmers were cultivated Boro rice. Urea (0.223±8.114 metric tons), Triple Super Phosphate (0.143±4.137 metric tons) and Muriate of Potash (0.105±5.046 metric tons) were used in these areas. Those fertilizers were highly used in Munshibazar and low in Panchgaon. Basudin (14.5±0.707 L or kg/ha) and Sure (13.34±1.89 L or kg/ha) were highly used pesticide, found in study area. In the study area the yearly increment rate of pesticide in 2011 to 2015 was 1.077%, 1.091%, 1.019%, 1.084% and 1.067%, respectively. Most of the farmers were fully depended on fertilizers and pesticides to increase their production. For identifying disease...

Annals of Bangladesh Agriculture, 2021

Influence of three cage shapes viz (i) rectangular ii) square, and (iii) circular on growth and p... more Influence of three cage shapes viz (i) rectangular ii) square, and (iii) circular on growth and production of Mystus cavasius (local name: gulsha) was studied in earthen pond conditions for a period of 120 days. Each of nine cages, which were made of polyethylene nets, had same internal area (1.80 m3) and stocked with M. cavasius fry at the rate of 300 m-3, following a completely randomized design. Fishes were fed with a commercial floating pellet feed (Mega 002) initially at the rate of 25% of average body weight, with a gradual reduction to 8%. Significantly higher (P<0.05) average weight gain (AWG) of 13.49 ± 0.14 g, with specific growth rate (SGR) of 1.87% day-1, and the survival rate of 89.41% were recorded for gulsha reared in the circular cage compared to the other shapes. Rectangular and square cages resulted in a similar (P>0.05) AWG of 10.29 ± 0.10 and 10.43 ± 0.25 g with survival rate of 80 and 83.61%, respectively. A significantly higher (P<0.05) average total p...

Fish physiology and biochemistry, Jan 25, 2018

Seminal composition and semen quality are the important determinants in assessing the reproductiv... more Seminal composition and semen quality are the important determinants in assessing the reproductive performance of different fishes. This study was carried out to evaluate the seminal composition and sperm quality of Barbonymus gonionotus. The seminal plasma contained 17.2 ± 0.34 mmol/l, 20.9 ± 0.48 mmol/l, 0.72 ± 0.04 mmol/l, 3.8 ± 0.2 mmol/l, and 1.49 ± 0.02 g/dl of Na, K, Ca, Mg, and total protein, respectively. The physical spermatological parameters, such as sperm volume, sperm motility, motility duration, sperm density, osmolality, and pH values were 1.55 ± 0.15 ml, 89 ± 2%, 391.9 ± 8.5 s, 2.8 ± 0.2 × 10 /ml, 400.6 ± 5.1 mmol/kg, and 8.75 ± 0.10, respectively. In correlation matrix, the K (R = 0.39, P < 0.01) and Ca (R = 0.27, P < 0.05) ions and osmolality (R = 0.29, P < 0.05) showed significant positive correlations with sperm motility. Similarly, fertilization rate significantly influenced by sperm motility (R = 0.26, P < 0.05) and K (R = 0.30, P < 0.05) and Ca...

Bangladesh Journal of Multidisciplinary Scientific Research

The pond aquaculture sector in Bangladesh expands rapidly. Total fish production from pond aquacu... more The pond aquaculture sector in Bangladesh expands rapidly. Total fish production from pond aquaculture increasing day by day. Bangladesh ranks fifth in aquaculture production and becomes fourth in the tilapia production in the world. Total fish production in Bangladesh was about 4.27 million MT in 2017-18 fiscal years and the pond aquaculture production was about 1.9 million MT which contributes about 44.43% of the total fisheries production in 2017-18. That means pond aquaculture contributes a lot in Bangladesh fisheries sectors. For getting proper outcome from the pond aquaculture some basic guidelines should be followed during pre-stocking, stocking, and post stocking management of freshwater pond. Firstly, pond should be prepared properly before stocking of fish seed like aquatic weeds and predators should be eradicated with properly constructed the pond bottom and dike and then liming and fertilization should be done for making a better culture environment for fish. Good qualit...