yaser fatemi

Chelonibia testudinaria is a globally widespread epibiont barnacle. Previous phylogenetic studies have shown that specimens of this species positioned in three separate clades. One clade contains specimens of the Eastern Pacific, one clade contains specimens of the West and East Atlantic, and one clade contains specimens of the Western Pacific and Southeast Asia. In the present study, we addressed the phylogenetic position of specimens of C. testudinaria from the Persian Gulf using the mitochondrial COX1gene. The results show that specimens of the Persian Gulf cluster with specimens of Southeast Asia from Taiwan, Malaysia, Singapore as well as Japan in a supported clade. The widespread distribution of this species in the Indo-West Pacific seems to have been facilitated by sea turtles.

The genus Peronia Fleming, 1822 by having 14 species, is one of the most diverse genera of the Onchidiidae family, which is highly distributed in the waters of the Persian Gulf and the Sea of ​​Oman. Despite their important ecological role in these areas, unfortunately, they have not been well studied so far. In this study, while describing the morphological characteristics of two species of this genus, Peronia madagascariensis (Labbé, 1934) and P. verruculata (Cuvier, 1830) with the help of a fragment sequence of a cytochrome oxidase gene, their status was determined. In this study, for the first time radulla belonging to the members of this genus in the northwestern Indian Ocean region were photographed and P. madagascariensis was reported from Iranian waters of the Oman Sea.

Stylocheilus longicauda (Quoy & Gaimard, 1825) is a pelagic species in the Aplysiidae family that well distributed in the circumtropical region. In this study, S. longicauda is reported from the Persian Gulf for the first time.

Haloa natalensis (Krauss, 1848), one of the most important species of the genus Haloa Pilsbry, 1921, is widely distributed throughout the Indo-Pacific region. Populations of this species was observed in the November 2019 in the coastal waters of Bandar Abbas, Iran. There is no any description and illustration for this species from the area, except a name record in the previous study. Moreover, this genus has experienced a taxonomic re-arrangement based on new phylogenetic analyses. In this study, we examined the collected individuals and their morphological feature as well as their habitat were described and their phylogenetic position within species was addressed using the mitochondrial CO1 sequences. This is the first report of this species in the northern part of the Persian Gulf and also for the Iranian waters.Haloa natalensis (Krauss, 1848), one of the most important species of the genus Haloa Pilsbry, 1921, is widely distributed throughout the Indo-Pacific region. Populations of this species was observed in the November 2019 in the coastal waters of Bandar Abbas, Iran. There is no any description and illustration for this species from the area, except a name record in the previous study. Moreover, this genus has experienced a taxonomic re-arrangement based on new phylogenetic analyses. In this study, we examined the collected individuals and their morphological feature as well as their habitat were described and their phylogenetic position within species was addressed using the mitochondrial CO1 sequences.

The present study was conducted to describe morphology and study the phylogeny of Dendrodoris fumata (Rüppell & Leuckart, 1830) from the Persian Gulf (Bostaneh), in 2019. DNA extraction was done using salt-out method, and the polymerase chain reactions promoted using the universal primers HCO2198 and LCO1490. A segment of the mitochondrial gene was selected as molecular marker, and the corresponding sequences were recovered from GenBank and were included in the analyses. The phylogenetic results and the K2P distances revealed that specimens of the Persian Gulf are closer to those of the Red Sea and the Gulf of Oman, but distant from the specimen of Australia. Based on the phylogenetic trees, D. fumata is a sister species to D. rubra. Moreover, the data showed that D. nigra, the other species that have been previously recorded from the Persian Gulf, stays quite distant from D. fumata.

Thuridilla indopacifica Gosliner, 1995 (Sacoglossa, Plakobranchidae) is a rare species in the Sacoglossan nudibranch that only reported from the South Africa and Western Australia. This study records T. indopacifica from the Gulf of Oman for the first time showing its expansion to the northwest of Indian Ocean.

The present study aimed to investigate the biodiversity and distribution of fishes in Kohgiluyeh and Boyer-Ahmad Province, and providing an updated checklist of fishes in this province. Samplings were done in the Bashar, Zohreh, Semmeh and Maroun rivers drainages troughout this province during 2017-2018. Overal, 27 specices belonging to 18 genera and 4 families were identified, including ten endemic, fourteen native and three exotic species. From these, 9 more species are listed for the province comparing the previous checklist. Also, ichthyodiversity hotspots in the province were introduced, ichthyodiversity threats were investigated and some protection solutions are suggested.

Aim and Charybdis hellerii is a well-known species in the Indian Ocean. There are many molecular researches on this species all over the word. Molecular researches on Iranian water crabs are very scarce; however there are several comprehensive morphological studies. In this paper, for the first time, phylogeny of Charybdis hellerii from Iranian waters are studied. Specimens were collected in 2013 from sandy sediments of shallow-waters in Chabahar Bay at full tide. Collections were transported to the laboratory and preserved in -20 degrees. The gill tissue was used for DNA extraction. The Hexadecyltrimethylammonium bromide (CTAB) method was used to extract DNA. Polymerase Chain Reaction (PCR) was then carried out. The sequencing alignments were conducted and phylogenic tree was obtained. The crab sample was identified as Charybdis hellerii by morphological analysis confirmed by molecular analysis. Nucleotides sequence of the cytochrome oxidase subunit 1 (CO1) gene was analyzed. The phylogenetic analysis was conducted and found that the Iranian species with other Charybdis hellerii are in a clade and support with 94% bootstrap. The maximum Likelihood phylogenetic analysis showed that the Iranian species is in the Eubrachyura clad and with 94% bootstrap support is a sister group Charybdis hellerii. The molecular results were also confirmed by morphological features.