List of Articles Echinodermat

• Open Access Article
  • Abstract Page
  • Full-Text
  
  1 - Identification and Distribution of Echinodermata in Northern Coast of Kish Island
  simin najafshad Parisa Nejatkhah Manavi Abdolrahim Vosoghi
  10.22034/jest.2018.13932.2255
  Background and Objective: Echinoderms are one of the oldest and the most important marine groups. They play an important role in oceans’ ecology especially in coral reefs. Various species of Echinodermata were identified in the depth of 5 m and in intertidal zone More

  Background and Objective: Echinoderms are one of the oldest and the most important marine groups. They play an important role in oceans’ ecology especially in coral reefs. Various species of Echinodermata were identified in the depth of 5 m and in intertidal zone of northern coasts of Kish Island in winter and summer of 2014. Method: Four stations at the northen coast of Kish Island (Simorgh, Didaniha, Kampe Rahimi, Derakhtsabz) were selected in terms of the characteristics of the zone, and Simorgh site was selected as the main station. Specimens were collected using a 1×1 m2 quadrat and identified following recovery and counting.  Findings: Totally, 184 specimens were collected and they belonged to 4 Classes, 6 Families and 7 Species of Echinometra mathaei, Diadema setosum, Clypeaster reticulates, Linckia multiflora, Macrophiothrix elongate, Holothuria (selenkothuria) Bacilla, Holothuria leucospilota. Except for Echinometra mathaei which was identified in “Simorgh station”, no other type of Echinodermata was found in intertidal zone of other stations. In this study, Clypeaster reticulatus, Holothuria leucospilota, Macrophiothrix elongate, Holothuria (selenkothuria) Bacilla were found for the first time in the depth of 5 m of Kish Island. Discussion and Conclusion: Results showed that density of Echinodermata was higher in summer than in winter. Echinometra mathaei was the most prominent species in the southern cost of Kish Island with a stability coefficient of 24.4 and 18.4 for summer and the winter, respectively. Moreover, indexes of richness increases in cold season and decreased in warm season. According to the stability coefficient and indexes of richness and density in the northern cost of the island, only Simorgh station has no stress and contains rare species. However, other three stations of Didaniha, Derakhtsabz and Kampe Rahimi are under stress and have little common species. Manuscript profile
• Open Access Article
  • Abstract Page
  • Full-Text
  
  2 - Identification and distribution of the intertidal Rocky shores Echinodermataof Gheshm Island,( the Persian Gulf , Iran)
  nooshin gholinejad ARIA ASHJA ARDALAN masoumeh malek
  10.30495/zisti.2023.1979646.1155
  Introduction: Echinoderms are among the most abundant benthos possessing various economic, ecological and nutritional importance.Aim: Studying and investigating the biodiversity and spatial distribution of echinoderms in the rocky shores of Qeshm.Materials and methods: More

  Introduction: Echinoderms are among the most abundant benthos possessing various economic, ecological and nutritional importance.Aim: Studying and investigating the biodiversity and spatial distribution of echinoderms in the rocky shores of Qeshm.Materials and methods: Biodiversity and distribution of Echinoderms in eight stations (Toola 1, Toola 2, Aftab, Dafari, Tango, Havafaza, Biotechnology, and Naz Island) and three intertidal zones (high, middle and low) on the rocky shores of Qeshm island in summer and winter seasons (August and January 2018) were investigated. At each station, one to two transects oriented perpendicular to shore were determined. Echinoderms were counted with 3 replications in each station and inertidal zones.Results: In this study, 12 echinoderms from 9 families were identified. The maximum and minimum frequency  were observed in winter with an average of 17 ind/m2 in the mid tide zone of the Havafaza station and in the summer with an average of 1 ind/ m2 in the low tide zone of the Naz Island station, respectively. Ophiocoma scolopendrinae was the dominant species (21.39%) in all stations. The results of the three-way permutational multivariate analysis of variance (PERMANOVA) showed that the  community structure of echinoderms is different in the different stations and sampling seasons. The highest and lowest Shannon index, Margalef index and Pielou index were compared among sampling stations and different seasons. According to the results of Simper test,Ophiocoma scolopendrina, Astropecten hemprici, Holothuria leocospilota Holothuria scabra, Astropecten phragmorous, Diadema setosum accounted for the highest percentage of participation in Bray-Curtis dissimilarity in terms of species density, between summer and winter seasons and in different sampling stations.Conclusion: The population structure of Echinoderms in the studied stations is influenced by various factors such as seasonal changes, tourists and residential areas. Manuscript profile
• Open Access Article
  • Abstract Page
  • Full-Text
  
  3 - The extraction and identification of compounds in sea urchin (Echinodermata mathaei) with Supercritical Fluid Extraction
  T. Naji M. Ghomi S. Bagheri Ziari
  The existing compounds in a species of sea urchin (Echinodermata mathaei) were identified. The study area was in sub-tidal waters of Bandar- e - lengeh within the geographic east longitude 54° 53.312 and north latitude 26° 32.739. Random sampling took the full t More

  The existing compounds in a species of sea urchin (Echinodermata mathaei) were identified. The study area was in sub-tidal waters of Bandar- e - lengeh within the geographic east longitude 54° 53.312 and north latitude 26° 32.739. Random sampling took the full tide by diver. In order to identify the components of this organism, five sea urchins with an average length of about 8.5±1 cm and a width of 7±1 cm and a weight of 66.680±10 grams were evaluated. After preparation, samples were extracted by supercritical fluid (Model Suprex MPS/225 Manufacturing Co. America Pittsburgh) and identified by gas chromatography (Model 5890 Manufacturing Co. Hewlett Packard) coupled with mass spectroscopy (Model 5970 Manufacturing Co. Hewlett Packard). Compounds identified in this sea urchin with SFE method under optimal conditions were: 2.85% n-Hexadecanoic acid, methyl ester, 1.9% Octadecanoic acid, 3.03% Cyclo propanenonanoic acid, 77.4% Cholesterol, 6.45% Ergosta-5, 22-dien-3-ol, 5.15% Fucosterol. Among these compounds, fucosterol and n-Hexadecanoic acid had antioxidant and anti-inflammatory properties respectively. Also Ergosta-5; 22-dien-3-ol had the germination properties. Manuscript profile
• Open Access Article
  • Abstract Page
  • Full-Text
  
  4 - Inhibitory Effect of Sea Cucamber, Holothuria parva Extract on Activity of Alpha -Amylase
  Najibe Ghenaat Pishe Mousa Keshavarz Hamed Mir
  10.22034/ascij.2023.1989599.1501
  Alpha-amylase enzyme inhibitors prevent the conversion of polysaccharides into monosaccharides. Inhibiting this enzyme from the absorption of simple sugars in the digestive system and thus preventing the increase in blood glucose levels has been effective. The purpose o More

  Alpha-amylase enzyme inhibitors prevent the conversion of polysaccharides into monosaccharides. Inhibiting this enzyme from the absorption of simple sugars in the digestive system and thus preventing the increase in blood glucose levels has been effective. The purpose of this study is to investigate the effect of ethyl acetate, methanol and water-methanol extracts of Holothuria parva on alpha-amylase enzyme inhibition. In this research, first extraction was done from the body wall, intestines and viscera of Holothuria parva based on increasing polarity, and in the next step, alpha-amylase enzyme activity was determined in the presence of different extracts under enzyme activity measurement conditions by DNSA colorimetric method, and IC50 were obtained and compared with the amount of acarbose as a positive control. In this study, the results showed that the percentage of inhibition increased with the increase in the concentration of the extracts and among all the extracts, the highest inhibitory percentage related to acarbose at a concentration of 0.8 mg/ml equals 96.92% and the lowest amount related to the water-methanol extract of the body wall at a concentration of 0.2 mg/ml equals 61.79% and the inhibition percentage of acarbose in both body parts is higher than other extracts (IC50=88.18-91.74 mg/ml). Considering the inhibitory effect of extracts extracted from Holothuria parva species on alpha-amylase enzyme, in the future, it can be used in the field of producing antidiabetic drugs of marine origin with minimal adverse side effects. Manuscript profile