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  • 1
    Publication Date: 2021-05-19
    Description: Reef-building coral harbor communities of photosynthetic taxa of the genus Symbiodinium (zooxanthellae). The genus Symbiodinium is currently classified into nine genetic clades (A–I). Various corals harbor different Symbiodinium clades; some show specificity to a single strain. Coral and their zooxanthellae are sensitive to environmental stresses. In the Persian Gulf, coral reefs are subject to harsh environmental conditions including extreme temperatures and high salinity. This is the first study to use clade specific primers to clarify the diversity of Symbiodinium in each coral species of Larak Island. For this purpose six coral species were collected at two different locations in Larak Island. After DNA extraction, PCR amplification was performed using clade specific primers. The results showed that multiple Symbiodinium clades are hosted by most coral species. In addition, among thirteen obtained Symbiodinium sequences, the frequency of either tree clades, A, C and D was almost the same. Corals species may contain different clades of Symbiodinium depending on the region and on the tolerance characteristics of each clade. Thus, knowledge of zooxanthellae diversity associated with scleractinian can contribute to a better understanding of the sensitivity of corals to environmental conditions.
    Description: Published
    Keywords: Symbiodinium ; Clade A ; Clade C ; Clade D ; Molecular ; Diversity ; Species ; Coral
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.151-161
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  • 2
    Publication Date: 2021-05-19
    Description: Seasonal variations of zooplankton communities were studied in the southern Caspian Sea for 4 successive seasons and 8 transects with 5 stations from 5 to 100 m depths which sampled during 2009. The zooplankton population constituted of 73.33% copepods, 24.21% rotifers, 2.23% cladocerans and 0.23% protozoans. Copepods were dominant at all stations with a density between 1456±531 ind. m-3 (Transect 8) to 4524±1215 ind. m-3 (transect 2). The predominant species of copepods was Acartia tonsa constituting 99.50% of all copepod populations. They were most abundant during warm months of summer in the upper layers (surface to 20 m depth) while rotifers replaced them during cold season. The maximum density of zooplankton was observed in the west decreasing towards the eastern parts of the sea.
    Description: Published
    Keywords: Ecology ; Holoplankton ; Zooplankton ; Copepods ; Rotifers ; Acartia tonsa ; Populations ; Diversity
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.437-448
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  • 3
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    In:  http://aquaticcommons.org/id/eprint/22698 | 18721 | 2018-05-16 20:31:26 | 22698 | Iranian Fisheries Science Research Institute
    Publication Date: 2021-07-09
    Description: Seasonal variations of zooplankton communities were studied in the southern Caspian Sea for 4 successive seasons and 8 transects with 5 stations from 5 to 100 m depths which sampled during 2009. The zooplankton population constituted of 73.33% copepods, 24.21% rotifers, 2.23% cladocerans and 0.23% protozoans. Copepods were dominant at all stations with a density between 1456±531 ind. m-3 (Transect 8) to 4524±1215 ind. m-3 (transect 2). The predominant species of copepods was Acartia tonsa constituting 99.50% of all copepod populations. They were most abundant during warm months of summer in the upper layers (surface to 20 m depth) while rotifers replaced them during cold season. The maximum density of zooplankton was observed in the west decreasing towards the eastern parts of the sea.
    Keywords: Biology ; Fisheries ; Zooplankton ; Caspian Sea ; Copepods ; Rotifers ; Acartia tonsa ; Iran ; Holoplankton ; Abundance ; Seasonal ; Diversity ; South Caspian Sea
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 437-448
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