Showing 4 results for Bahri
Mani Mahin, Arash Bagheri, Amirhoushangh Bahri, Ali Salarpouri, ,
Volume 4, Issue 3 (Winter 2015)
Abstract
This study on set-net fishing at the coastal area of Bandar Abbas was conducted from October to April 2012. A totally of 54 set-net operations were recorded, random samplig monthly of 9 set-net from Nakhlenakhoda, Khajehatatta and Suru were conducted. Catch data of every set-net operator were recorded monthly. Fishes were identified, length and weight frequency of fishes were recorded. Results showed that a total of 66 species and 54 genuses belonged to 45 families of fishes were caught by the set-net in Bandar Abbas coastal area. Nakhlnakhoda were consisted of 39 species, 35 genus and 31 families, Khajehatta, 42 species, 40 genus and 37 families and Suru 34 species, 28 genera and 26 families respectively. Analysis of catch composition were showed that in Nakhlnakhoda Goaf (39.7%), Kalar(10.8%) and crabs (9.5%), in Khajehatta Chacunda gizzard shad (38.5%), Mullets (20.9%) and Sardine (5.1%), and in Suru White sardine( 56.4%), Whipfin-silver biddy (7.1%) and Milk fish (6.4%) were dominated. Baed on the data, the frequency of fishes were totally raised in March. Maximum number of fishes were recorded in Nakhlnakhoda (34 species) in October, as well as in Suru (16 species).
Ramin Karim Zadeh, Amir Houshang Bahri, Mohsen Gozari,
Volume 6, Issue 3 (winter 2016)
Abstract
In this research antibacterial activity of Pseudomonas isolates derived from hepatopancreas of Litopenaeus vannamei were evaluated against pathogenic Vibrio spp. Shrimp samples collected from 9 different ponds in Tiab region- Hormozgan province. Hepatopancreas samples of collected shrimps were inoculated in three different isolation media. Pseudomonas Isolation Agar medium revealed highest yield by isolation of an average 22 pseudomonas isolates. Approximately 40 Pseudomonas isolates were obtained. Results of antibacterial screening experiments by well diffusion method demonstrated antibacterial activity of MR21 and MR35 strains. These producer isolates exhibited the highest antibacterial activity against all target Vibrio species consist of Vibrio parahaemolyticus, V. harveyi, V. anguillarum and V. alginolyticus after 72 hours. Biochemical, morphological and physiological studies showed that MR21 and MR35 strains belong to Pseudomonas aeruginosa. Evaluation of antibacterial activity of potent strains in different media proposed trypticase soy broth as an efficient medium. Assessment of temperature influence on antibacterial activity of potent isolates revealed stability of antibacterial activity in 25˚c, 35˚c, 45˚c. Comparison of antibacterial activity of producer strains in presence of seawater and distilled water showed that seawater could promote antibacterial activity. Analysis of growth curve revealed that potent isolates entered to stationary phase after 24 hours. According to achieved results P. aeruginosa MR35 and P. aeruginosa MR21 can considered as potential probiotic isolates for further studies.
Mansour Azad, Maziar Yahyavi, Houshang Bahri, Saeid Tamadoni Jahromi, Maryam Tala,
Volume 7, Issue 1 (Summer 2017)
Abstract
Penaeus vanamei is one of the most important penaeide shrimp species in Persian Gulf. This research was carried out to determine the genetic status of broodstocks of this species by sequencing the cytochrome oxidase I gene (COI). Sampling was performed from two hatcheries in hormozgan province (Kolahi and Tiab) and a hatchery in Bushehr province (Delvar). Seven haplotypes were identified from 502 aligned sequences. Phylogeny study showed that all specimens from the three studied hatcheries were in a main clade with two clusters showing highly Homosigisity of Bushehr and Hormozgan hatcheries. On the other hand, three haplotypes BU. A3, A4, A6 derived from Bushehr area were distinguished from the other haplotypes of Bushehr and Hormozgan regions, showing that the heterozygosity rate in the broodstocks of Bushehr area is much higher than Hormozgan area. The haplotypic status of the COI gene indicates high homozygosity levels among imported broodstocks in hormozgan that can lead to increase in the amount of blood coefficient between broodstocks and decrease in growth and survival rate among postlarves in near future.
Mohammad Reza Sadeghi, Saeid Tamadoni Jahromi, Amir Houshang Bahri, Mohsen Gozari,
Volume 7, Issue 2 (Autumn 2017)
Abstract
In this research Vibrio harveyi strains were isolated and identified from hepatopancreas of Litopenaeus vannamei from Tiab region, Hormozgan province. Shrimps samples were collected from five different ponds in northern and southern Tiab shrimp culture sites. Isolation phase was performed by dilution and inoculation of hepatopancreas samples on thiosulfate citrate bile salts sucrose agar medium. Purified isolates were identified phenotypically based on morphological, biochemical and physiological methods. Genomic DNA of five selected Vibrio harveyi strains were extracted and their 16S rRNA genes were amplified. Comparison of amplified 1000 bp sequence of 16srRNA genes with registered sequences in NCBI gene bank by megablast software exhibited high homology between isolated strains and Vibrio harveyi ATCC BAA-1116. Phylogenetic analysis by MEGA 6 sofware based on neighbour Joining method showed that isolated strains had similar monophyletic origin. According to these results presence of V. harveyi strains in hepatopancreas of Litopenaeus vannamei from Tiab region were genetically confirmed.
