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Articles by Md. Ariful Islam
Total Records ( 2 ) for Md. Ariful Islam
  Arafat Siddiquee , Harunur Rashid , Md. Ariful Islam , Khan Kamal Uddin Ahmed and Md. Shahjahan
  The reproductive biology of an endangered fish species great snakehead (Channa marulius) was studied by gonadosomatic index (GSI) and histological analysis of ovaries and testis. Fishes were collected from the haor areas of greater Sylhet basin for a period of July 2011 to June 2012. For female the highest GSI (0.42) was in July and the lowest (0.018) was in January and March. Similarly, for male the highest GSI (0.056) was in July and the lowest (0.018) was in January. In the histological study, the premature (PM) and mature (M) stages of oocytes were observed in the ovaries of fish collected in June to July. The ovaries contained developing oocytes oogonia (OG) and perinuclear oocytes (PNO) in the August and subsequent month samples which were mostly spent. In testis high proportions of mature germ cells spermatids (SPT) and spermatozoa (SPZ) were observed in the July samples of C. marulius. In parallel to GSI, both the ovary and testis develop and mature synchronously. The present findings indicated that Channa marulius from Sylhet basin attains peak reproductive maturity in the month of June and July which revealed the breeding season of this species.
  Md. Ariful Islam , Mst. Minara Khatun , Byeong Kirl Baek and Sung Il Lee
  The aim of this study was to assess the impact of Brucella abortus biotype 1 infection on the reproductive performance using Sprague-Dawley (SD) rat model. Virgin female SD rats (n = 24) were infected intraperitoneally with 0.1 mL of saline containing 1x1011 Colony Forming Unit (CFU) of pathogenic B. abortus biotype 1 Korean bovine isolate. Control rats (n = 24) were inoculated with 0.1 mL of apyrogenic saline. Both inoculated and control rats were divided into six subgroups. Four rats in each subgroup were consistently bred at 3, 7, 14, 21, 28 and 60 days after infection. B. abortus infection induced 41.67% infertility in the infected rats. The mean number of offspring/litter was 8.71±2.01 for infected rats and 12.87±1.42 for control rats (p<0.001). The mean weight of the viable offspring was 6.10±0.36 g for infected rats and 7.15±0.40 g for control rats (p<0.001). The rate of stillbirth was 12.30% in the infected rats. B. abortus biotype 1 was isolated from the uteri of the infected rats. The data of this study indicate that B. abortus biotype 1 infections in SD rat model affect reproduction adversely by causing infertility, stillbirth and loss of number and weight of offspring.
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