علوم زیستی دریا
Majid Shekari; Mohammad Ali Salari-Aliabadi; Ahmad Savari; Simin Dehghan Madise
Abstract
This study was conducted to identify and study the communities structure of adhesive organisms or the fouling of 13 years old artificial reefs on the coast of Bahrakan along the west of the Persian Gulf. fouling sample was collected seasonally from spring 2016 to winter 2016 from 4 sampling sites using ...
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This study was conducted to identify and study the communities structure of adhesive organisms or the fouling of 13 years old artificial reefs on the coast of Bahrakan along the west of the Persian Gulf. fouling sample was collected seasonally from spring 2016 to winter 2016 from 4 sampling sites using quadrates 25 × 25 cm by diving operation. Based on the biomass (wet weight), Anthozoa corals with 88% of the total biomass, contain the most adhesive mass, followed by sponges (10%) and hydrozoa corals and Arthropod with 1% of the total biomass. The spring season showed the highest average rate, which was due to the biomass of the Antozoa group with 89% in this season. Based on the cluster test, the two winter and autumn seasons have a similar percentage of 80% and the summer and spring seasons show a similar percentage of 50%. Also, based on cluster analysis of two structures A, D, the similarity level of 45% and B, C indicate the similarity level of 80%
علوم زیستی دریا
maryam moazami; Mohammad Ali Salari-Aliabadi; bita archangi; Hossein Zolgharnein; Ahmad ghasemi
Abstract
In this study, genetic diversity of Pinctada persica population was evaluated using PCR-RFLP method. To determine and compare genetic diversity of P. persica populations in khark, shidvar, hendurabi and larak islands, 51 samples were collected from 1-6 m depths. DNA of samples was extracted by CTAB method. ...
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In this study, genetic diversity of Pinctada persica population was evaluated using PCR-RFLP method. To determine and compare genetic diversity of P. persica populations in khark, shidvar, hendurabi and larak islands, 51 samples were collected from 1-6 m depths. DNA of samples was extracted by CTAB method. A pair of primers of Pinctada persica was used for polymerase chain reaction. Enzymatic digestion of PCR yield was performed using, AvaΙΙ, DdeΙ, HindIII, SfaNΙ and TaqΙ restriction enzymes. DNAs were collected and stained with silver staining after subjected to poly acrylamide gel electrophoresis The results revealed that electrophoresis and enzymatic digestion fragments of the 51 samples collected from four stations in the northern coast of Persian Gulf with all 5 enzymes were the same The results of this study confirm that Pinctada persica Based on the studied gene is completely homogenous in these stations and show no genetic diversity.
علوم زیستی دریا
Leala Alami-Naysi; Mohammad Ali Salari-Aliabadi
Abstract
In order to investigate the population structure species of sea cucumber Holothuria parva in the two regions Bostaneh Port and Dayer Port, 16S rRNA gene sequencing method was used. In total, 417 nucleotide locus were determined, after investigating in the NCBI database, sequences were consistent with ...
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In order to investigate the population structure species of sea cucumber Holothuria parva in the two regions Bostaneh Port and Dayer Port, 16S rRNA gene sequencing method was used. In total, 417 nucleotide locus were determined, after investigating in the NCBI database, sequences were consistent with 16S rRNA gene and Samples were verified to belong to the species of H. parva. In total four haplotypes were identified, one of which was common in both regions. Bostaneh Port had 3 haplotypes and Dayer Port had 2 haplotypes. Haplotype diversity was estimated to be 83 percent in Bostaneh Port and 50 percent in Dayer Port. Estimated Nucleotide diversity in Bostaneh and Dayer Ports were measured 0.007 and 0.002 respectively. Low genetic differentiation (Fst=0.000), divergences rate (Dxy= 0.0048) and high gene flow (Nm=1874) between the two regions were estimated. Based on this study Bostaneh and Dayer Port samples have probably diverged from an identical population since a high gene flow and low differentiation is observed among them. There is also a common haplotype, suggesting a common ancestor of H. parva in two regions.
Abstract
This study was done to identify larval stages and biodiversity of Dendrobranchiata planktonic communites in artificial reefs of Khuzestan coasts(Bahrekan area in Northwest Persian gulf) for one year from May 2011 to April 2012 monthly basis.Sampling was conducted using a plankton net with a spring 300 ...
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This study was done to identify larval stages and biodiversity of Dendrobranchiata planktonic communites in artificial reefs of Khuzestan coasts(Bahrekan area in Northwest Persian gulf) for one year from May 2011 to April 2012 monthly basis.Sampling was conducted using a plankton net with a spring 300 micrometers. Totally, from two superfamily: Penaeoidea and Sergestoidea, 3 families: Sergestidae, Luciferidae, Penaeidae were identified.From Penaeidae family, Metapenaeus affinis ,Penaeus indicus and Parapenaeopsis stylifera species, from Luciferidae family, Lucifer hanseni specie and from Sergestidae family, Acetes sp specie were identified and introduced. Also larval density of identified species in different months and stations are calculated and determined Metapenaeus affinis specie(With the average of number per cubic meter in 1029±830 )from Penaeidae family account for larval density is maximum in September. Finally, two abundance peak was observed that the first peak was in September and the second peak was in November.The maximum of relative frequency percentage in Penaeoidea superfamily related to mysisI stage and 62 percentage. The results obtained indicate that the artificial structures are well managed nursery area for Penaeidae shrimp. The maximum average value of Shanon-wiener index was in November (1.36) due to the presence of all species in the same month. Simpson index was lowest in November, which confirms the above conclusion.
Ahmad Shadi; Hosein Zolgharnein; MohamadAli Salari-aliabadi; Mohamad Bagher Nabavi; Mohamad Taghi Ronagh
Abstract
Using 5 microsatellite loci Sillago sp. From Hormozgan North Persian Gulf were investigated through 68 specimens in two stations: Minab(31 specimens) and Bandar Lengeh(38 specimens). DNA was extracted using modified CTAB(Hexadecyl trimethyl-ammonium bromide) protocol. 5-17 alleles were observed in 5 ...
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Using 5 microsatellite loci Sillago sp. From Hormozgan North Persian Gulf were investigated through 68 specimens in two stations: Minab(31 specimens) and Bandar Lengeh(38 specimens). DNA was extracted using modified CTAB(Hexadecyl trimethyl-ammonium bromide) protocol. 5-17 alleles were observed in 5 loci with 8.4 mean allelic frequency. Observed and expected heterozygosity values was calculated (0.115<Ho<0.792) ,(0.598<He<0.902) . Genetic distance and identity according to Nei was estimated 0.520 and 0.595 respectively which shows genetic distance of genus level. Significant deviation from Hardy-Weinberg equilibrium (p<0.001) was observed at all loci at two stations. Analysis of Molecular Variance(AMOVA) of Genetic differentiation index(Fst) revealed mean significant (p=0.001) differentiation between two studied regions and 3.90 gen flow. Despite low distance of two studied regions (180km) there are probably two distinct populations of Sillago sp. which should be considered in management efforts.
Ali Reza Shamoradi; Mohammad Ali Salari-Aliabadi; Seiied Mohammad Bagher Nabavi; Ahmad Savari; Abdolali Movahedinia
Volume 11, Issue 2 , November 2012, , Pages 8-15
Abstract
The goals of this study were identification and ecological survey on macrobenthic bivalves in the Khark Island. This study has been done during four seasons through 2010-2011 in five sites around the Khark Island. In each five sites, three separated transects including supralittoral, eulittoral and sublittoral ...
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The goals of this study were identification and ecological survey on macrobenthic bivalves in the Khark Island. This study has been done during four seasons through 2010-2011 in five sites around the Khark Island. In each five sites, three separated transects including supralittoral, eulittoral and sublittoral zones have been selected. At each sampling time and site environmental factors such as temperature, salinity and total organic maters (TOM) have been measured. Collected samples were analysed and according to the results, Maximum and minimum water temperatures have recorded in summer (35.94 ± 0.28) and in winter (18.34 ± 0.39) and the Maximum and minimum rates of salinity have recorded in winter (44.6 ± 0.14) and spring (37 ± 0.18) respectively. Maximum and minimum percentages of total organic maters (TOM) have observed in summer (9.63 ± 0.71) and winter (3.39 ± 0.15) respectively. Twelve bivalve species belonging to seven families were identified that are: Barbatia lacerate, Pinctada radiate, Ostrea sp.1, Crossostrea gigas, Sacosstrea cucullata. Diplodonta ravaiyensis, Venus sp.1, Circentia callypyga, Callista sp.1, Gari roseus, Tellina capsoides, Angulus adensis. The maximum and minimum density and distribution have been found in spring and summer respectively. In our study the most frequent bivalve species in all seasons was Barbatia lacerate.