نتایج جستجو برای: fish catch
تعداد نتایج: 115655 فیلتر نتایج به سال:
This study was carried out in Turkmen fishing station to examine suitable mesh size of gill nets for Persian sturgeon, Acipenser persicus, to decrease possibility of catching immature specimens and increase catch likelihood for larger fish. The Holt model was used to determine suitable length for catch and selection of mature Persian sturgeon females. Following preliminary studies some 920 expe...
Moshta (Hadrah in Arabic language) is an intertidal fixed stake trap which is one of the oldest types of fishing gear in the countries of the Persian Gulf including the southern coast of Iran. The detailed data on the mass caught by Moshta in terms of species and quantity (tons/year) in periods of 2007-2010 and 2013-2017 of Hormozgan Province were collected from the Iranian fisheries organizati...
Togok is one of the fishing gear that operated in Kuala Tungkal, Tanjung Jabung Barat Regency, this form a conical net body whose arms are tied to two poles and success catching it relies on currents, togok used by Tungkal fishermen catch rebon shrimp (Acetes japonicas) but operation, there many other types catch. This study aims determine main catch, bycatch, discards, size as well number catc...
Many estuarine and freshwater ecosystems worldwide have undergone substantial changes due to multiple anthropogenic stressors. Over the past two decades, the Sacramento-San Joaquin Delta (Delta) in California, USA, saw a severe decline in pelagic fishes, a shift in zooplankton community composition, and a rapid expansion of invasive aquatic vegetation. To evaluate whether major changes have als...
Key-words: angling, disturbance, fitness, telemetry, Esox lucius In a catch-and-release recreational fishery fish populations can be impacted by lethal and sub-lethal effects. In terms of sub-lethal effects anglers may directly (catch-and-release) and/or indirectly (angling-related disturbances, e.g. boating) influence the behaviour, growth and fitness of the fish. We quantified the long-term b...
For more than two decades, assessment and monitoring of Oman Sea demersal resources has been carried out using swept area method. The study area starts from western water of Iran to border of Iran and Pakistan in the east of Oman Sea and total study area were divided into 5 sub-areas M to Q in different depth layers of 10-20, 20-30, 30-50 and 50 -100 meters. In general, the average amount of bi...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید