نتایج جستجو برای: 1028.2 kg of shrimp and 3388 kg of bycatch were caught in the trawl net. bycatch

تعداد نتایج: 26559826  

Journal: :بهره برداری و پرورش آبزیان 0
مرتضی ایقانی دانشجوی دانشگاه علوم کشاورزی و منابع طبیعی گرگان سید یوسف پیغمبری استادیار صید بهره برداری آبزیان دانشگاه علوم کشاورزی و منابع طبیعی گرگان پریا رئوفی دانشجوی کارشناسی ارشد صید و بهره برداری آبزیان دانشگاه علوم کشاورزی و منابع طبیعی گرگان

with regard to bycatch problem, this is the first study of the shrimp trawl bycatch in different depth variation in hormuzgan coastal waters. samples were collected during shrimp season in october 2011 and november 2012. the study area was divided into two regions: hormuz-keshtisoukhte (56°, 27ʹ e/27°, 07ʹ n) to (56°, 18ʹ e/27°, 06ʹ n) and keshtisoukhte-toola (56°, 18ʹ e/27°, 06ʹ n) to (55°, 58...

Bong-Jin Cha Heui-Chun Ahn In-Ok Kim Sam-Kwang Cho, R. Craig

  This study aimed to design a bycatch reduction device (BRD) for shrimp beam trawl, which is manufactured by flexible materials to reduce bycatch for the gear in the South Sea of Korea. The model test was carried out to understand the shape of the gear in the water and to measure the variation of flow speed due to the BRD in a circulating water channel. Catches were compared between a shrimp b...

Bong-Jin Cha, Heui-Chun Ahn, In-Ok Kim, Sam-Kwang Cho, R. Craig ,

  This study aimed to design a bycatch reduction device (BRD) for shrimp beam trawl, which is manufactured by flexible materials to reduce bycatch for the gear in the South Sea of Korea. The model test was carried out to understand the shape of the gear in the water and to measure the variation of flow speed due to the BRD in a circulating water channel. Catches were compared between a shrimp b...

2013
Menothuparambil Ravunny Boopendranath Puthra Pravin Therodath Rajan Gibinkumar Sarasan Sabu Vettiyattil Ramakrishnan Madhu

Penaeid shrimp is a major resource in India contributing about 7.4% of the total marine fish landings. They are mostly landed by small mechanized trawlers. Shrimp trawling generates large quantities of bycatch mostly consisting of juvenile fishes, due to use of small mesh size in codends of trawl nets. Juvenile Fish Excluder cum Shrimp Sorting Device (JFE-SSD) is a bycatch reduction device with...

2013
Robert W. Hannah Stephen A. Jones

Tests of trawl footrope modifications to reduce the bycatch of eulachon (Thaleichthys pacificus) and other small demersal fishes in the ocean shrimp (Pandalus jordani) trawl fishery The Oregon Department of Fish and Wildlife prohibits discrimination in all of its programs and services on the basis of race, color, national origin, age, sex or disability. If you believe that you have been discrim...

Journal: :شیلات 0
احسان فرخی کارشناس ارشد شیلات، دانشکدۀ علوم و فنون دریایی و جوی، دانشگاه هرمزگان، بندرعباس، ایران احسان کامرانی دانشیار گروه شیلات، دانشکدۀ علوم و فنون دریایی و جوی، دانشگاه هرمزگان، بندرعباس، ایران آرش اکبرزاده استادیار گروه شیلات، دانشکدۀ علوم و فنون دریایی و جوی، دانشگاه هرمزگان، بندرعباس، ایران هادی رییسی دانشجوی دکتری شیلات، دانشکدۀ علوم و فنون دریایی و جوی، دانشگاه هرمزگان، بندرعباس، ایران ایوب سلیمانی کارشناس ارشد شیلات، دانشکدۀ علوم و فنون دریایی و جوی، دانشگاه هرمزگان، بندرعباس، ایران

this study was conducted for estimation of bycatch shrimp trawl from fishing grounds of hormozganprovince.sampling operation was carried by commercial trawler around hormoz and qeshm islandduring fishing season in october and november 2012. towing duration was between 1 to 3.5h(2±0.08h). contribution of bycatch and target species was 86.26% (18918.80 kg) and 13.74%(3014.22kg) respectively. by-c...

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد شاهرود - دانشکده پزشکی 1390

nitric oxide (no) is a small molecule synthesized by most of mammalian cells with diverse biological activities including vasodilatation, host defense and wound healing. impaired wound healing is a common occurrence among diabetics and patients receiving glucocorticoid therapy. on the other hand the application of laser in biomedical area have been increased. thus, the current studies were desi...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه بیرجند 1390

abstract this study attempted to investigate the strategies used to translate clichés of emotions in dubbed movies in iranian dubbing context for home video companies. the corpus of the current study was parallel and comparable in nature, consisting of five original american movies and their dubbed versions in persian, and five original persian movies which served as a touchstone for judging n...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تهران - دانشکده علوم 1370

تهیه ترکیب فسفرتری کلرید بااستفاده از واکنش فسفر سفید(زرد) و گاز کلر در فاز محلول و درمقیاس آزمایشگاهی موردمطالعه قرارگرفت .پس از انتخاب مناسبتر روش و انتخاب بهترین شرایط کوشش درجهت طراحی واحد نیمه صنعتی انجام شد و توانستیم دراین راستا به تولید 10 کیلوگرم درساعت باخلوص 99/5 درصد برسیم . abstract the preparation of phosphorous trichloride by the reaction of white phosphorous and chlorine gas in ...

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد گرمسار - دانشکده ادبیات، زبانهای خارجی و تاریخ 1389

abstract the main purpose of this study was to investigate whether there was any significant difference between the speaking achievement of learners who were trained by means of consciousness raising of sociolinguistic skills and that of learners who were trained without the above mentioned task. the participants of this study consist of 60 intermediate level students participating languag...

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