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  • Chaetoceros calcitrans  (2)
  • Chaetoceros mulleri  (2)
  • Communities  (2)
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Keywords
Publisher
Years
  • 1
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    Unknown
    Study of biotic communities for artificial reef placement in Hormuzgan Province waters, the Persian Gulf (2017)
    Details
    Publication Date: 2021-05-19
    Description: Persian Gulf waters (Hormuzgan Province) were studied from seasonally to determine the best locations for installation of artificial reefs. The area was stratified for 10 transects and each transect was divided into three stations: Station 1 for waters below 10m, station 2 for waters between 10 and 20m and station 3 for waters between 20 and 30m deep. Habitats of fauna and flora including communities of corals, seaweeds, sea cucumbers and sea grasses and sedimentation depth through scuba diving were studied in each transect and sub-transects. Sea grass communities existed in some spots within station 1 in Bandar Mesan, Bandar Lengeh, Kish Island and Bandar Chirooyeh transects, while for station 2, sea grasses were absent from Chirooyeh transect and present in Bandar Mesan, Bandar Kong and Kish Island transects. Also, seaweed habitats existed in station 1 in Bandar Mesan transect and some areas in Bandar Lengeh transect. Study of coral and sea cucumber communities indicated existence of Acropora sp. habitats in Bahman jetty, Bandar Mesan and Bandar Bostaneh transects, Porites sp. habitat in Hengam Island transect, Holothuria sp. habitats in Bandar Mesan and Bandar Lengeh transects and Stichopus sp. habitat in Hengam Island transect. All of these habitats were located in station 1 and had patchy distribution which was drawn in GIS software. Calculated sedimentation depth using degree scale in different transects demonstrated statistically significant differences between station 1 in Bandar Salakh transect and the same stations in other transects, also between station 2 and station 3 in other transects (P〈0.05). The result of sedimentation depth assessment showed that station 2 in Bandar Lengeh area up to Hendurabi Island were better for artificial reefs installation compared to south of Gheshm Island with the exception of Bandar Kong and Bandar Chirooyeh transects.
    Description: Published
    Keywords: Artificial reefs ; Placement ; GIS ; Sea grass ; Biotic ; Communities ; Water ; Seaweed ; Sea Cucumber ; Coral
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.9-16
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    PAPER (OA)
  • 2
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    Unknown
    Propagation and rearing larvae of Black lip pearl oyster Pinctada margaritifera until Spat stage (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: The black lip pearl oyster Pinctada margaritifer is one of the three valuable species of pearl oyster for the cultured pearl industry of the world. Due to its high economical value, endangered species status in Persian Gulf, its historical and social importance, and the technical feasibility to produce pearl oysters seeds in hatchery, Persian Gulf Shellfish Research Center in northern part of Persian Gulf, Iran developed the spat production of this important species for the first time. Ten pairs of matured P. margaritifera broodstocks collected from the pearl oysters beds in Lavan Island, Persian Gulf during Jun-July 2004, were transferred to the hatchery at the Persian Gulf Shellfish Research Center. All the broodstocks were thoroughly brushed free of fouling organisms and washed with freshwater. The spawning and larval cultured procedures were generally the same as described for P. fucata and P. margaritifera by Algarswami et al., (1983. 1987). The oysters subjected to thermal stimulation (temperature elevated from 20 °C to 30 °C). Around 70% of oysters spawned approximately after an hour. Fertilization was normal ranging between 97-98% and early larval development was viable. Six one-tone fiberglass tanks holding 1μ filtered and UV sterilized seawater with gentle aeration were used for culturing the larvae. Pure culture of three micro algae, Isochrysis aff galbana ,Chaetoceros calcitrans and Chaetoceros mulleri were used as diets. Feeding started with I. galbana and a combination of I. galbana and C. calcitrans from day 4 of rearing period. The initial larval density was 50 larvae/mL at D-Shape larval stage and reduced to 1 laravae/mL at later stages. The larvae reached to the D-Shape stage between 20-24 hours, Umbo stage on day 6-12, Eye-spot on day 17-21and Pediveliger and Plantigarad on day 22-30. Oyster Spats were settled on collectors after 32 days of rearing period. Survival rate was 70% at D-Shape stage, 60% for Umbo stage, 50% for Eye-spot and 30% for Spat. Total produced spat 123500 in two years and realized and transferred 23500 spat to sea.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Economical ; Broodstock ; Black lip pearl oyster ; Pinctada margaritifera ; Propogation ; Polarbody ; D-shape stage ; Eye spot stage ; Plantigrade stage ; Rearing ; Larvae ; Species ; Hatchery ; Shellfish ; Spawning ; P.fucata ; P. margaritifera ; Chaetoceros calcitrans ; Chaetoceros mulleri ; I. galbana ; C. calcitrans
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 44pp.
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  • 3
    facet.materialart.
    Unknown
    Study of existing biological communities in Hormuzgan province waters (Persian Gulf) for installation of artificial reefs (2017)
    Details
    Publication Date: 2021-05-19
    Description: To determine the suitable locations for installation of artificial reefs we studied Persian Gulf waters (Hormuzgan province) from December 2006 to March 2007 seasonally. The area was stratified to 10 transects and each transect was divided to three layers and used random sampling method. Habitats of fauna and flora including: Communities of corals, seaweeds, sea cucumbers and sea grasses, and sedimentation depth using SCUBA diving method were studied in each transect and layer. Sea grass communities existed in some places with below 10m depth of Bandar Mesan, Bandar Kang, Kish Island and Bandar Chirooyeh transects. Also, seaweed habitats were seen in Bandar Mesan and some areas in Bandar Lengeh and Kish Island in 10-20m depth transect. The study of coral and sea cucumber communities indicated presence of Acropora sp. habitats in Bahman jetty, Bandar Mesan and Bandar Bostaneh transects , and Porites sp. habitats in Hengam island transect, Holothuria sp. habitats in Bandar masen and Bandar Lengeh transects and Stichopus sp. habitat in Hengam Island transect. All these species were found in shallow waters bellow 10 meters depth and showed a patchy distribution. Sedimentation depth results showed a statistically significant difference between layer 〈10m in Bandar Salakh and the same layers in other transects, also between layer 10-20m and 20-30m in other transects. Based on the sedimentation depth and habitats studies, we recommend layer 10-20m in Bandar Lengeh area and Bandar Lengeh to Hendurabi Island area as suitable for artificial reefs installation.
    Description: Published
    Keywords: Sea cucumber ; Sea grass ; Holothuria sp. ; Stichopus sp. ; Acropora sp. ; Biological ; Communities ; Installation ; Reefs ; Artificial reef ; Coral ; Seaweed
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.23-32
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  • 4
    facet.materialart.
    Unknown
    Propagation and rearing larvae of black lip pearl oyster Pinctada margaritifera until spat stage (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25248 | 18721 | 2018-09-07 06:47:42 | 25248 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: The black lip pearl oyster Pinctada margaritifer is one of the three valuable species of pearl oyster for the cultured pearl industry of the world. Due to its high economical value, endangered species status in Persian Gulf, its historical and social importance, and the technical feasibility to produce pearl oysters seeds in hatchery, Persian Gulf Shellfish Research Center in northern part of Persian Gulf, Iran developed the spat production of this important species for the first time. Ten pairs of matured P. margaritifera broodstocks collected from the pearl oysters beds in Lavan Island, Persian Gulf during Jun-July 2004, were transferred to the hatchery at the Persian Gulf Shellfish Research Center. All the broodstocks were thoroughly brushed free of fouling organisms and washed with freshwater. The oysters subjected to thermal stimulation (temperature elevated from 20 °C to 30 °C). Around 70% of oysters spawned approximately after an hour. Fertilization was normal ranging between 97-98% and early larval development was viable. Six one-tone fiberglass tanks holding 1μ filtered and UV sterilized seawater with gentle aeration were used for culturing the larvae. Pure culture of three micro algae, Isochrysis aff galbana ,Chaetoceros calcitrans and Chaetoceros mulleri were used as diets. Feeding started with I. galbana and a combination of I. galbana and C. calcitrans from day 4 of rearing period. The initial larval density was 50 larvae/mL at D-Shape larval stage and reduced to 1 laravae/mL at later stages. The larvae reached to the D-Shape stage between 20-24 hours, Umbo stage on day 6-12, Eye-spot on day 17-21and Pediveliger and Plantigarad on day 22-30. Oyster Spats were settled on collectors after 32 days of rearing period. Survival rate was 70% at D-Shape stage, 60% for Umbo stage, 50% for Eye-spot and 30% for Spat. Total produced spat 123500 in two years and realized and transferred 23500 spat to sea.
    Keywords: Aquaculture ; Iran ; Persian Gulf ; Hormozgan province ; Broodstock ; Black lip pearl oyster ; Pinctada margaritifera ; Propogation ; Polarbody ; D-shape stage ; Eye spot stage ; Plantigrade stage ; Rearing ; Larvae ; Species ; Hatchery ; Shellfish ; Spawning ; P.fucata ; P. margaritifera ; Chaetoceros calcitrans ; Chaetoceros mulleri ; I. galbana ; C. calcitrans
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 44
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