Relative growth and sexual dimorphism in the hermit crab Clibanarius signatus Heller, 1861 (Anomura, Diogenidae) from the northern coast of the Persian Gulf, Iran

2021 ◽  
Author(s):  
Mahdieh Ahmadi ◽  
Ahmad Noori ◽  
Bita Kalvani Neitali ◽  
Marcelo Antonio Amaro Pinheiro
Keyword(s):  
Sexual Dimorphism ◽  
Hermit Crab ◽  
Persian Gulf ◽  
Northern Coast ◽  
Relative Growth ◽  
The Persian Gulf

scholarly journals A fifth-millennium BC cemetery in the north Persian Gulf: the Zohreh Prehistoric Project

Antiquity ◽  
2016 ◽  
Vol 90 (353) ◽  
Author(s):  
Abbas Moghaddam
Keyword(s):  
Persian Gulf ◽  
Focal Point ◽  
Research Programme ◽  
Northern Coast ◽  
Archaeological Survey ◽  
Khuzestan Province ◽  
Digital Reference ◽  
The North ◽  
Registration Number ◽  
The Persian Gulf

The Zohreh Prehistoric Project (ZPP), a long-term archaeological research programme focused on the river valley south of the modern city of Behbahan in Khuzestan Province, was launched in April 2015 (Figure 1). The valley, which lies in close proximity to the northern coast of the Persian Gulf, was surveyed extensively during the early 1970s by Hans Nissen from the Oriental Institute of the University of Chicago (Nissen & Redman 1971; Dittmann 1984, 1986). The ZPP aims to develop full-coverage archaeological survey of the valley, focusing on the human landscape over time, mostly in relation to settlement hierarchy and dynamics, modes of production and the emergence of regional centres at the end of the fifth and beginning of the fourth millennia BC. The focal point for the project is the principal site of the Zohreh Valley, known as Tol-e Chega Sofla (39RN1Q22108; the site was previously registered as Chogha Sofla, BZ.71 (Dittmann 1984: 110). We have changed this to reflect its local name. The digital reference is the unique Iranian archaeology map registration number.

scholarly journals Relationship between the Persian Gulf Sea-Level Fluctuations and Meteorological Forcing

2020 ◽  
Vol 8 (4) ◽  
pp. 285
Author(s):  
Naghmeh Afshar-Kaveh ◽  
Mostafa Nazarali ◽  
Charitha Pattiaratchi
Keyword(s):  
Sea Level ◽  
Persian Gulf ◽  
Atmospheric Pressure ◽  
Tide Gauge ◽  
Low Frequency ◽  
Northern Coast ◽  
Meteorological Forcing ◽  
Sea Level Fluctuations ◽  
Coastal Sea ◽  
The Persian Gulf

Sea-level data from six tide gauge stations along the northern coast of the Persian Gulf were analyzed both in time and frequency domain to evaluate meteorological forcing. Spectral analyses indicated that mixed, predominantly semi-diurnal tides were dominant at all stations, but low-frequency fluctuations correlated well with atmospheric pressure and wind components. Non-tidal sea-level fluctuations up to 0.75 m were observed along the northern coasts of the Gulf due to the combined action of lower atmospheric pressure and cross-shore wind. Coherency between low-frequency sea-level records and mean sea-level pressure indicated that the latter usually leads to sea-level fluctuations between 1 and 6.4 days. In contrast, the same analysis on the wind velocity and sea level revealed that the former lags between 3 and 13 days. The effect of wind stress on coastal sea-level variations was higher compared with the effect of atmospheric pressure. Concurrent analysis of low-pass-filtered sea-level records proved that the non-tidal wave moves from west to east along the northern coasts of the Persian Gulf.

Reproduction, growth and production of Amiantis umbonella (Bivalvia: Veneridae) on northern coast of the Persian Gulf, Bandar Abbas, Iran

2009 ◽  
Vol 90 (4) ◽  
pp. 711-718 ◽  
Author(s):  
Hanieh Saeedi ◽  
Aria A. Ardalan ◽  
Ehsan Kamrani ◽  
Bahram H. Kiabi
Keyword(s):  
Persian Gulf ◽  
Growth Parameters ◽  
Stage Iv ◽  
Dry Weight ◽  
Northern Coast ◽  
Active Stage ◽  
Sea Temperature ◽  
Amiantis Umbonella ◽  
Bandar Abbas ◽  
The Persian Gulf

Amiantis umbonella is distributed throughout the coast of the northern Persian Gulf. This study of 893 clams provides data on reproduction, growth and production for the period April 2007 to March 2008 from two transects along the Bandar Abbas coast. Histological preparations showed six stages of gametogenic development: resting stage (Stage 0), early active (Stage I), late active (Stage II), ripe (Stage III), partially spawned (Stage IV) and spent (Stage V). The specimens were gonochoric and showed synchronized spawning. The reproductive cycle commenced in September and finished in March with one major spawning event in January which correlated with lower sea temperature. Von Bertalanffy growth parameters for the sample were asymptotic length (L∞) = 58–62 mm, growth constant (k) = 0.28–0.29 yr−1 and length zero (t0) = –0.48 –0.47. The mean annual clam abundance, mean biomass and production were 10 individuals. m−2, 5.7 g shell free dry weight (SFDW) m−2 and 0.495 g SFDW m−2 yr−1, respectively.

Molecular characterization of hepatitis B virus (HBV) strains circulating in the northern coast of the Persian Gulf and its comparison with worldwide distribution of HBV subgenotype D1

2014 ◽  
Vol 86 (5) ◽  
pp. 745-757 ◽  
Author(s):  
Mahmoud Reza Pourkarim ◽  
Valentijn Vergote ◽  
Samad Amini-Bavil-Olyaee ◽  
Zohre Sharifi ◽  
Steven Sijmons ◽  
...  
Keyword(s):  
Hepatitis B Virus ◽  
Hepatitis B ◽  
Molecular Characterization ◽  
Persian Gulf ◽  
Northern Coast ◽  
Worldwide Distribution ◽  
B Virus ◽  
The Persian Gulf

Incidence and biology of Arcotheres tivelae (Crustacea: Decapoda) in Amiantis umbonella (Bivalvia: Veneridae) on the northern coast of the Persian Gulf, Iran

2010 ◽  
Vol 90 (4) ◽  
pp. 655-661 ◽  
Author(s):  
Hanieh Saeedi ◽  
Aria A. Ardalan
Keyword(s):  
Persian Gulf ◽  
Carapace Width ◽  
Host Record ◽  
Northern Coast ◽  
Significant Difference ◽  
The Mean ◽  
Amiantis Umbonella ◽  
Bandar Abbas ◽  
One Year ◽  
The Persian Gulf

The occurrence of pinnotherid crab Arcotheres tivelae in the bivalve mollusc Amiantis umbonella was investigated for one year on the Bandar Abbas coast (Persian Gulf, Iran). Specimens of A. umbonella were collected monthly from two transects from April 2007 to March 2008 and were investigated for presence of the Arcotheres tivelae. Infestation frequency of A. tivelae was 9.18% in a sample of 893 clams. From a total of 89 specimens of crabs, only eight were male. They were observed in late February and early March, all of them but one in association with female crabs. There was no significant difference between the sexes of the infested clams that pea crabs choose as a host. The mean carapace width of the crab A. tivelae was 7.7 ± 1.7 mm and the mean length of the Amiantis umbonella was 39.84 ± 8.93 mm. Clams in the mid and low tidal zones were more infested. There was no significant relationship between clam length–crab width (R2 = 0.28). The mean fecundity of crabs was 2517 ± 864 eggs. Infection caused a reduction of flesh weight of clams. There was no significant correlation between the frequency of crabs' occurrence and the temporal variability of water temperature, salinity, dissolved oxygen and pH in different months. This study provides the first report of the distribution of pea crabs A. tivelae in A. umbonella, a new clam host record in Iran.

scholarly journals Contamination, Identification and Distribution of Microplastic in Sediments, Surface Seawater and Four Species of Fish on the Northern Shores of the Persian Gulf, south of Iran

2021 ◽  
Author(s):  
Ali Agharokh ◽  
Mojtaba Taleshi ◽  
Mehdi Bibak ◽  
Majid Rasta ◽  
Hor Jafroudi ◽  
...  
Keyword(s):  
Persian Gulf ◽  
Northern Coast ◽  
Tourist Industry ◽  
Surface Seawater ◽  
Tourist Attractions ◽  
Predominant Form ◽  
Bandar Abbas ◽  
The Persian Gulf

Abstract The purpose of this study is to investigate Microplastic pollution (MPs) in important ports of the northern coast of the Persian Gulf. MPs were identified on the northern shores of the Persian Gulf in three compartments: sediment, seawater, and four species of fish. In December 2019, sampling was conducted in 7 sampling areas. In this study, 357 MPs were identified in all samples. The predominant polymer in MPs was polypropylene (PP) and later polyethylene (PE). The most polluted areas in terms of MPs in sediments, seawater, and fish were Bushehr, Bandar Abbas, and Qeshm. The fiber was the predominant form of MPs in all sampling stations and those samples taken from the surface seawater, sediments, and fish. The presence of fishing ports with fishing tools, commercial ports, the tourist attractions, and the tourist industry in these areas was an important factor controlling the distribution of MPs in these areas.

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