Mohammad Darvishi

[ 1 ] - Population assessment and yield per recruit of longtail tuna (Thunnus tonggol) in Northern of the Persian Gulf and Oman Sea (Iran, Hormozgan Province)

The purpose of this paper was to detail some important biological aspects of T. tonggol in coastal waters of Hormuzgan Province(Persian Gulf and Oman Sea). A total monthly data of 4383 individuals ranging from 25 to 124 cm fork length were collected from April 2015 to March 2016. The data were analyzed with FiSAT II software using the ELEFAN1 package to estimate the population parameters. Th...

[ 2 ] - استانداردسازی چشمه تور گوشگیر سطح ماهی هوور (1851, Thunnus tonggol Bleeker )، جهت بهره‌برداری پایدار در آب های شمال خلیج فارس و دریای عمان (استان هرمزگان)

به منظور برداشت پویا از ذخایر ماهی هوور لازم است اندازه چشمه‌ به نحوی تعیین گردد که فرصت حداقل یک بار تخم‌ریزی برای آنان فراهم آید. این تحقیق در آب های شمال خلیج فارس و دریای عمان (استان هرمزگان) انجام شد و پنج بندر صیادی تخلیه عمده صید شامل بندر جاسک، بندر سیریک، بندرعباس، بندرکنگ و بندرپارسیان (جوادالائمه) برای نمونه‌برداری انتخاب شدند. مدت زمان نمونه برداری دوره یک ساله 1394بود ...

[ 3 ] - Assessment of species composition and CPUE (catch per unit effort) of commercial fish caught with bottom gillnet in Jask coastal waters

Tiger– toothed croaker (Otolithes ruber) is considered as a commercially important target species for fishermen in south of Iran, due to its high economic value and marketability. This investigation was carried out using bottom monofilament gillnet with mesh size (stretch mesh) of 8.5 cm and net height of 6 m, made of nylon twine (Polyamide) and a hanging ratio of 50% in order to determine spec...

[ 4 ] - Assessment of the Relationship between Fish Distribution and Physicochemical Parameters of Water in Artificial Reefs (Bandar-E-Salakh and Bandar-E-Bostaneh)

Four components were used to identification the effective physical-chemical factors of water on the variations of dominant fish families. The total variation of the variables was concluded 94/17 % and 90/5%, related to the loaded components in artificial reefs of Bandar-E-Salakh and Bandar-E-Bostaneh respectively.Assessment of the loaded factors in each of the components were identified that ni...

[ 5 ] - Assessment of fish biodiversity in artificial reefs of the Persian Gulf ( Hormozgan province ,Salakh and Bostaneh ports)

Artificial reefs are used for increasing of aquatic biodiversity and stock rehabilitation in the word. Fish Biodiversity was evaluated in artificial reefs that is located in Bandar –E-Salakh ((Qeshm island, concrete pipe (St1)), Bandar-E-Bostaneh ((Bandar-E- Lengeh) concrete pipe, St2) and St3 (Bandar-E-Bostaneh concrete pipe, pyramidal and Reef ball) in 20 meters. For this purpose, these sele...

[ 6 ] - بررسی گروه‌های هم‌سن و الگوی بازگشت شیلاتی ماهی هوور (Thunnus tonggol (Bleeker,1851، در آب‌های استان هرمزگان

خانواده تون‌ماهیان یکی از گونه‌های مهم آبزیان اقتصادی در آب‌های خلیج فارس و دریای عمان محسوب می‌شوند. از گونه‌های مهم تون ‌ماهیان در استان هرمزگان می‌توان به ماهی هوور (Thunnus tonggol)، اشاره کرد. یکی از راه های برداشت مناسب از ذخایر ماهیان، داشتن اطلاعات درخصوص گروه‌های هم‌سن و بازگشت شیلاتی آن هاست. ن...

[ 7 ] - Estimation of Coral fish Standing Biomass in Hengam Island, The Persian Gulf

Standing biomass of coral fish was estimated by the Underwater Visual Census method(UVCm) and belt transect in five stations (St.) (dead corals, continuous and developed reefs, discrete and undeveloped reefs, Acropora spp. in small amounts and rocky reefs), in Larak Island from Sep.2020 to Apr.2021seasonally.The maximum and minimum of standing biomass was estimated 908.79 (Kg/Km2) and 235.85 ...