Seasonal variation of zooplankton and pelagic fish catch in the fishing grounds off Tiruchendur coast, Gulf of Mannar, India

2015 ◽  
Vol 15 (2) ◽  
pp. 89-100 ◽  
Author(s):  
Selvin Pitchaikani J ◽  
Aaron P. Lipton
Oceanography ◽  
2005 ◽  
Vol 18 (4) ◽  
pp. 112-123 ◽  
Author(s):  
Nani Hendiarti ◽  
Suwarso ◽  
Edvin Aldrian ◽  
Khairul Amri ◽  
Retno Andiastuti ◽  
...  

2017 ◽  
Vol 4 (1) ◽  
pp. 109 ◽  
Author(s):  
I Gusti Agung Bagus Wisesa Sastra ◽  
I Wayan Gede Astawa Karang ◽  
Abd. Rahman As-syakur ◽  
Yulianto Suteja

Mackerel fish that classified pelagic fish and an export commodity in Indonesia. Distribution of mackerel fish are foundn all Indonesian waters, one of them in the Bali Strait. Distribution of mackerel fish influenced by oceanographic condition such as sea surface temperature (SST) and chlorophyll-a concentration. SST and chlorophyll-a concentrations are environmental parameters that can provide information on fishing ground. The purpose of this research is explained the temporal fluctuation and relationship between SST and chlorophyll-a concentration with mackerel fish had been catch in Bali Strait waters during 2011-2016. Data were analyzed using simple correlation analysis with 95% confidence interval. Temporally, the highest average SST occurred during the transition season I (March-May) and the lowest in the east season (June-August). The highest average chlorophyll-a concentration occurs in the east season and the lowest in the west season (December-February). The highest catch of mackerel fish occurred during transitional season II (September-November) and lowest in west season. The association between SST and chlorophyll-a concentration on mackerel fish catch showed low correlation with significant relationship, whereas concentration between SST and chlorophyll-a concentration strong with significant correlation


2021 ◽  
Vol 11 (02) ◽  
pp. 92-102
Author(s):  
Theivasigamani Mohanraj ◽  
Maxwalt Sheeba ◽  
Siluvai Regi Thomas Sherly Cross ◽  
Thangaraj Jebarani Rajathy

Author(s):  
Muhammad Kurnia ◽  
. Sudirman ◽  
Muhammad Yusuf

ABSTRACT<br />Effort to exploitation the fishery resources can do in various ways, catching effort by use of hand line is one of the efforts in the field of fisherie. The study was conducted in the Sabutung Island Waters of Pangkep Regency, aims was to investigate the effect of different of hook size and the species composition of the catch of hand line using different of hook size. The effectiveness of hook size is determined by the highest of catches.The method used is experimental fishing on the fishing operation of hand line during 30 trips. Data analysis used normality test and ANOVA test done with SPSS 16.0. The results showed that the differences between hook size number 10 with number 8 and 12 gave influences to the amount of catch. It’s showed by sig score hook size no.10 is 0,00 and sig score hook size no.8 and 12 is 0,00 which them have sig score less than 0,05 and it meant H0 pushed away so it concluded that the hook size influenced the fishing catch. The compositions of fish catch during the study based on the amount and weight were short mackerel, Bigeye scad, Indian scad, yellow tail and diodon histrix. Short mackerel were the most species of fish caught during the research that is equal to 41,2% of the 364 tail of the total catch.<br /><br />Keywords: hand line, hook size, small pelagic fish<br />-------<br /><br />ABSTRAK<br /><br />Usaha mengeksploitasi sumber daya perikanan dapat dilakukan dengan berbagai macam cara, salah satu diantaranya adalah usaha perikanan tangkap dengan menggunakan pancing ulur (hand line). Penelitian dilakukan pada September-Nopember 2012 di Perairan Pulau Sabutung Kabupaten Pangkep, bertujuan untuk mengetahui pengaruh perbedaan ukuran mata pancing dan komposisi hasil tangkapan dari tiga ukuran mata pancing yang berbeda sehingga diperoleh ukuran mata pancing yang efektif. Efektifitas ukuran mata pancing ditentukan berdasarkan jumlah tangkapan terbanyak. Metode yang digunakan adalah metode experimental fishing, dengan operasi penangkapan ikan sebanyak 30 trip. Analisis data menggunakan uji kenormalan dan uji ANOVA dengan SPSS 16.0. Hasil penelitian menunjukkan bahwa perbedaan mata pancing no.10 dengan no.8 dan 12 berpengaruh terhadap jumlah dan berat hasil tangkapan pancing ulur. Hal ini dilihat dari nilai sig mata pancing no.10 sebesar 0,00 dan sig mata pancing no. 8 dan 12 sebesar 0,00 yang menunjukan nilai sig kurang dari 0,05. Ini menunjukan H0 ditolak sehingga disimpulkan bahwa ukuran mata pancing berpengaruh terhadap hasil tangkapan. Komposisi hasil tangkapan selama penelitian berdasarkan jumlah dan berat terdiri atas kembung lelaki, selar bentong, layang, ekor kuning dan ikan buntal. Ikan kembung lelaki adalah jenis ikan yang paling banyak tertangkap selama penelitian yaitu sebesar 41,2% yaitu 364 ekor dari keseluruhan hasil tangkapan.<br /><br />Kata kunci: pancing ulur, ukuran mata pancing, ikan pelagis kecil


2012 ◽  
Vol 12 (1) ◽  
pp. 67
Author(s):  
Richardus Kaswadji ◽  
Muhammad Hatta ◽  
Nur Asia Umar

Observations on pelagic fish catch activities using bagan Rambo in Makassar Strait had been conducted in 2005and 2006 to obtain physical, chemical, and biological data and their processes in the operation of bagan Rambo inthe observation sites. The objective of the study was to overcome the overfishing problems which have beenhappenning in Makassar Strait, using a model of the trophic level approaches. Nine observation stations were setin three transects perpendicular to the coast. The measurement of physical, chemical, and biological parameterswere conducted monthly. Biological parameters measured were chlorophyll-a, and the abundance of phytoplanktonand zooplankton. Phytoplankton primary productivity, grazing mortality of phytoplankton by zooplankton, numberof catch of fish, and fish feeding habit were also measured. Run of the built model based on the data obtainedshowed that with the present catch-pressure (assuming that this was the start of catching operation), there wouldbe an overfishing starting in the 26 th or 27th month onward. Meanwhile, if the catch were half of the present, thenthere would be an overfishing in the 31 st or 32nd month, but would back to the sustainable production months afterthat. The model is still being developed by finding and adding more accurate data and parameters.


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