Alireza Asem

Alireza Asem

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64
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Publications

Publications (64)
Article
Full-text available
The genus Artemia Leach, 1819 is a cosmopolitan halophilic crustacean, consisting of bisexual species and obligate parthenogenetic populations. Asia is rich in Artemia biodiversity. More than 530 Artemia sites have been recorded from this area and more than 20 species/subspecies/variety names have been used for them. There exist various problems in...
Preprint
Full-text available
Due to the lack of a taxonomic key for the identification of Artemia species, molecular markers have been increasingly used for phylogenetic studies. The mtCOI marker is a regularly considered marker for the molecular systematics of Artemia populations. The proposed universal and specific primers have mostly failed to amplify the Artemia aff. sinic...
Preprint
Full-text available
Artemia is the most common live food which is used in aquaculture worldwide. This study reports on biometrical variation of introduced American Artemia franciscana cyst from 24 non-native localities and two native habitats in Asia and USA, respectively. Results showed the largest diameter of untreated cyst, diameter of decapsulated cyst and thicker...
Article
Full-text available
It is well concluded that microbial composition and diversity of coral species can be affected under temperature alterations. However, the interaction of environmental accumulation of corals and temperature stress on symbiotic Symbiodiniaceae and bacterial communities are rarely studied. In this study, two groups of soft coral Sarcophyton trochelio...
Article
Full-text available
Artemia franciscana, native to America, has recently colonized as non-indigenous population in Asia, Europe, North Africa, and Australia. We evaluated the effects of the colonization of A. franciscana on genetic differentiation in new environments in the United Arab Emirates (UAE). We used the COI marker to determine the genetic structure and origi...
Article
Coral Symbiodiniaceae and bacteria maintain a symbiotic relationship that is essential for coral survival. The symbiotic communities component in the polyps host could affect coral resistance and the ability to recover from stress. In this study, we increased the cultured range temperature (26 ± 1 ℃) of Sarcophyton trocheliophorum and Euphyllia anc...
Article
Full-text available
Changes in the microbial community associated with environmental impacts can lead to opportunistic infections, coral disease and death. Diversity analysis and community comparison were performed on 23 collected soft Coral specimens from South China See surrounding Hainan Province (China) based on Illumina MiSeq sequencing. The results showed that P...
Article
Full-text available
In the previously published mitochondrial genome sequence of Artemia urmiana (NC_021382 [JQ975176]), the taxonomic status of the examined Artemia had not been determined, due to parthenogenetic populations coexisting with A. urmiana in Urmia Lake. Additionally, NC_021382 [JQ975176] has been obtained with pooled cysts of Artemia (0.25 g cysts consis...
Article
Full-text available
Artemia franciscana, native to America, has recently colonized as non-indigenous population in Asia, Europe, North Africa, and Australia. We evaluated the effects of the colonization of A. franciscana on genetic differentiation in new environments in the United Arab Emirates (UAE). We used the COI marker to determine the genetic structure and origi...
Preprint
Artemia franciscana, native to America, has recently colonized non-indigenous populations in Eurasia, Mediterranean regions and Australia. In present we sought to evaluate the potential effects of colonization of A. franciscana on genetic differentiation in the new environments in UAE. We used the COI marker to determine population genetic structur...
Article
Full-text available
Due to the rapid developments in the aquaculture industry, Artemia franciscana, originally an American species, has been introduced to Eurasia, Africa and Australia. In the present study, we used a partial sequence of the mitochondrial DNA Cytochrome Oxidase subunit I (mt-DNA COI) gene and genomic fingerprinting by Inter-Simple Sequence Repeats (IS...
Article
Full-text available
Apis mellifera scutellata and A.m. capensis, two native subspecies of western honey bees in the Republic of South Africa (RSA), are important to beekeepers in their native region because beekeepers use these bees for honey production and pollination purposes. Additionally, both bees are important invasive pests outside of their native ranges. Recen...
Article
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The mitochondrial genome of Sinularia maxima was completed using next-generation sequencing (NGS) method. The mitochondrial genome is a circular molecule of 18,730 bp in length. The gene arrangements include 14 protein-coding genes (PCGs), 2 ribosomal RNA genes, and 1 tRNA (tRNA-Met). The base composition is 30.18% A, 16.47% C, 19.35% G, and 33.99%...
Article
Full-text available
The complete mitochondrial genome of Sarcophyton trocheliophorum was completed using next-generation sequencing (NGS) method. The mitochondrial genome is a circular molecule of 18,508 bp in length, containing 14 protein-coding genes, two ribosomal RNA genes and one transfer RNA gene (Met-tRNA). The base composition is 30.45% A, 16.03% C, 19.13% G,...
Article
Full-text available
Urmia Lake, the largest natural habitat of the brine shrimp Artemia urmiana, has progressively desiccated over the last two decades, resulting in a loss of 80% of its surface area and producing thousands of hectares of arid salty land. This ecological crisis has seriously affected the lake's native biodiversity. Artemia urmiana has lost more than 9...
Article
Full-text available
The brine shrimp Artemia exhibits two reproductive modes. 1). oviparity, producing diapause embryos; an. 2). ovoviviparity, producing free-swimming nauplii. Previous studies have suggested the existence of a critical stage that determines the reproductive mode. Physicochemical factors, such as photoperiod, temperature, and salinity, have been sugge...
Article
Full-text available
Native American Artemia franciscana has become an introduced species in the Old World due to the rapid development of the aquaculture industry in Eurasia. The recent colonisation of A. franciscana in Mediterranean regions and Asia has been well documented, but Australia is a continent where the dispersal of this species is not well understood. In t...
Article
Full-text available
The taxonomic identity of an unknown Artemia population inhabiting the Al Wathba Wetland Reserve in Abu Dhabi, U.A.E., was determined using phylogenetic analysis of the mitochondrial marker Cytochrome Oxidase Subunit 1 ( COI ). The results showed that the examined population belongs to an exotic invasive species, Artemia franciscana . Based on the...
Article
Full-text available
The quality of Artemia cysts size can be determined by biometrical characterization. In this study, the combined effects of salinity and ferric citrate were studied on the biometric characterization of Artemia by single clonal reproduction under the laboratory condition. Results of control treatment showed increasing of the salinity correlates...
Article
Full-text available
Malformations of crustaceans have been observed in their natural habitats as well as in laboratory studies. Two patterns of morphological abnormalities have been recorded in species of the brine shrimp genus Artemia, including a gynandromorphic pattern and a specimen with three compound eyes. Here we report a hitherto unknown pattern of morphologic...
Article
Full-text available
The complete mitochondrial genome of Artemia sinica was obtained using the next-generation sequencing (NGS) method. The mitochondrial genome is a circular molecule of 15,689 bp in length, with the typical structure of 13 protein-coding genes (PCGs), 22 transfer RNA genes (tRNAs) and 2 ribosomal RNA genes, and a non-coding control region (CR). The b...
Article
Full-text available
The complete mitochondrial genome of Sinularia ceramensis was completed using next-generation sequencing (NGS) method. The mitochondrial genome is a circular molecule of 18,740 bp in length. The gene arrangements including 14 protein-coding genes (PCGs), 2 rRNAs, and 1 tRNA (tRNA-Met). The base composition is 30.26% A, 16.44% C, 16.35% G, and 33.95...
Article
Full-text available
The complete mitochondrial genome of the Asian river pipefish Doryichthys boaja was sequenced. The mitochondrial genome is a circular molecule of 16,439 bp in length, containing 37 mitochondrial genes and a control region. The base composition is 31.03% A, 24.22% C, 14.44% G, and 30.32% T, with an A + T content of 61.35%. All PCGs were initiated by...
Article
Full-text available
The complete mitochondrial genome of Solegnathus hardwickii was determined to be 16,519 bp long circular molecule with a typical gene arrangement of vertebrate mitochondrial. The complete mitochondrial genomes were obtained by conventional and long PCR. Tree constructed using maximum likelihood based on protein-coding genes and ribosomal RNAs showe...
Article
Full-text available
This is the first study on phylogenetic relationships in the genus Artemia Leach, 1819 using the pattern and sequence of secondary structures of internal transcribed spacer 1 (ITS1). Significant intraspecific variation in the secondary structure of ITS1 rRNA was found in Artemia tibetiana. In the phylogenetic tree based on joined primary and second...
Article
Full-text available
Coupled effects of photoperiod, temperature and salinity on diapause induction were experimentally studied using a diploid clone of the parthenogenetic Artemia from Barkol Lake, Xinjiang, China. We conducted three experiments, each containing nine treatments (combinations of two of the above three factors, each with three levels). When photoperiod...
Article
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Males that present infrequently in parthenogenetic Artemia are commonly called “rare males”. By rearing cloned parthenogenetic Artemia in the laboratory, the frequency of rare males was observed for seven Artemia populations with different ploidy compositions. The results showed that the values of the male:female ratio varied from 0.53:1000 to 1.40...
Article
Full-text available
Using two nuclear (ITS1 and Na+/K+ ATPase) and three mitochondrial (COI, 16S and 12S) markers, we determined the genetic variation and evolutionary relationship of parthenogenetic and bisexual Artemia. Our analyses revealed that mitochondrial genes had higher genetic variation than nuclear genes and that the 16S showed more variety than the other m...
Article
Full-text available
The brine shrimp Artemia urmiana, an abundant inhabitant of the hypersaline Urmia Lake in northwestern Iran, has recently been described from Lake Koyashskoe, also a shallow hypersaline lake that is located on the Black Sea coast of the Crimean Peninsula (Ukraine). This discovery has questioned the endemicity of A. urmiana in Urmia Lake and has als...
Article
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Urmia Lake, an endorheic salt lake in northwestern Iran, was registered in the Ramsar Convention on Wetlands as a wetland of international importance, also a UNESCO biosphere reserve. In this review, we have updated our last checklist in 2014 with available information on the biodiversity of the lake.
Article
Full-text available
The Astacus leptodactylus specimens were collected from four sites of Aras reservoir, North-West of Iran and examined for the epibionts during 2009. Protozoan epibionts from ciliophora (one genus and seven species) and tracheophyta were isolated from the cuticular surface of different body parts of narrow-claw crayfish, A.leptodactylus. Seasonal pr...
Article
Full-text available
The Astacus leptodactylus specimens were collected from four sites of Aras reservoir, NorthWest of Iran and examined for the epibionts during 2009. Protozoan epibionts from ciliophora (one genus and seven species) and tracheophyta were isolated from the cuticular surface of different body parts of narrow-claw crayfish, A.leptodactylus. Seasonal pre...
Article
Full-text available
The cysts of nine Chinese populations of parthenogenetic Artemia were studied by scanning electron microscope. In the 270 cysts examined, 15 different morphological patterns were recognized with most of them not recorded in previous studies and the “tubercled shell surface” being the most common pattern. Results also displayed high intrapopulation...
Article
Full-text available
This paper reports on biometrical variation of parthenogenetic Artemia cysts from 12 saline lakes and salterns of China. The results showed that the largest diameter of untreated and decapsulated cysts of the studied populations belong to Aqqikkol Lake (325.4 ± 13.7 μm; 301.4 ± 14.2 μm, respectively) and the smallest from Xiaotan Saltern (258.7 ± 1...
Article
Full-text available
Urmia Lake, with a surface area between 4000 to 6000 km2, is a hypersaline lake located in northwest Iran. It is the saltiest large lake in the world that supports life. Urmia Lake National Park is the home of an almost endemic crustacean species known as the brine shrimp, Artemia urmiana. Other forms of life include several species of algae, bacte...
Article
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Algae are used for many purposes as: food industry, animal feeding, soil enrichment and biodiesel production. Chlorella is widely cultivated from microalgae species as it is rich in nutrients and has its implementation as a healthy food use. In this study, the impact of NaCl salinity on growth, betacarotene, and chlorophyll a of Chlorella sp. has b...
Article
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Occurances of cyanobacterial bloom typically appear in eutrophic lakes which either have been affected by anthropogenic nutrient loading or are naturally rich in nutrients. Microcystis blooms have been reported all over the world in freshwater ecosystems mainly due to increased population which results in increased the waste water production. The a...
Article
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This study examines the relationship between phytoplankton population and some important physicochemical variables in the Bukan Dam Reservoir. The sampling was performed monthly from 8 sampling sites from April 2008 to February 2009. Phytoplankton counts were made by inverted microscope. Totally, 55 phytoplankton taxa were identified and included C...
Article
Full-text available
The genus Artemia Leach, 1819 is a complex taxon with both sexual species and asexual populations. The asexual populations are considered as biological species "Artemia parthe-nogenetica Barigozzi, 1974" (BROWNE & BOWEN 1991). Since the reproductive mechanism of parthenogenetic Artemia is via parthenogenesis, males are rarly produced among these in...
Article
The brine shrimp Artemia is important for aquaculture since it is bighly nutritious. It is also used widely in biological studies because it is easy to culture. The aim of the present study is to review the literature on the taxonomical nomenclature of Artemia. The present study indicates the existence of seven species: three living in the Americas...
Article
In four samples of Artemia urmiana Gunther, 1899 from Urmia Lake, Iran, the following parameters were compared: the diameter of the frontal knobs (right and left), and the respective ratios of that diameter with total body length and head width. The results do not denote significant differences in frontal knob diameter that would agree with similar...
Article
Full-text available
The brine shrimp Artemia (Crustacea, Anostraca) is an organism of great economical importance in the aquaculture industry (Sorgeloos, 1980a; Bengtson et al., 1991; Sorgeloos et al., 1998, 2001). With a wide distribution all over the world and more than 500 re-ported sites (Abatzopoulos et al., 2002) the brine shrimp stands out as one of the most re...
Article
Full-text available
The main objective of this study was to compare morphological differentiation between samples of Artemia urmiana in different stations from Urmia Lake. Male and female samples were analyzed separately because they are sexually dimorphic. Principal Components Analysis shows that male samples were almost clustered in two groups and these groups were...
Article
Full-text available
Sexual dimorphism is an important subject in biosystematic and evolutionary studies of the animal kingdom. In this survey, 4 geographical stations have chosen from the Urmia Lake (west Azerbaijan, Iran). Males and females of Artemia urmiana were examined in order to study sexual dimorphism. The t-Test was used to find out significant differences be...

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Projects (3)
Project
Study on influence of temperature changes on symbiotic Symbiodiniaceae and bacterial communities’ structure of soft corals. This project is supporting by Sanya City Science and Technology Department (80,000 Yuan)