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  <leader>02208nam a2200217Ia 4500</leader>
  <controlfield tag="001">CTU_237918</controlfield>
  <controlfield tag="008">210402s9999    xx            000 0 und d</controlfield>
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   <subfield code="a">639.22</subfield>
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   <subfield code="b">T311</subfield>
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  <datafield tag="100" ind1=" " ind2=" ">
   <subfield code="a">Nguyễn, Trung Tín</subfield>
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  <datafield tag="245" ind1=" " ind2="0">
   <subfield code="a">Phân tích và đánh giá hiện trạng khai thác nguồn lợi thủy sản vùng cửa sông Cửu Long :</subfield>
  </datafield>
  <datafield tag="245" ind1=" " ind2="0">
   <subfield code="b">Luận văn Cao học. Ngành Quản lý nguồn lợi Thủy sản</subfield>
  </datafield>
  <datafield tag="245" ind1=" " ind2="0">
   <subfield code="c">Nguyễn Trung Tín ; Trần Đắc Định (Cán bộ hướng dẫn</subfield>
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  <datafield tag="260" ind1=" " ind2=" ">
   <subfield code="a">Cần Thơ</subfield>
  </datafield>
  <datafield tag="260" ind1=" " ind2=" ">
   <subfield code="b">Trường Đại học Cần Thơ</subfield>
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  <datafield tag="260" ind1=" " ind2=" ">
   <subfield code="c">2020</subfield>
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  <datafield tag="520" ind1=" " ind2=" ">
   <subfield code="a">Nghiên cứu hiện trạng khai thác thủy sản vùng cửa sông Cửu Long được thực hiện từ tháng 10/2018 đến tháng 7/2019. Tổng số 188 hộ ngư dân khai thác thuộc 4 tỉnh là Tiền Giang, Bến Tre, Trà Vinh và Sóc Trăng được phỏng vấn bằng Phiếu phỏng vấn. Kết quả cho thấy thuyền trưởng tàu cá ở đây có tuổi trung bình là 43,11±9,31 năm, số năm kinh nghiệm khai thác là 17,24±9,26 năm. Về trình độ học vấn, thuyền trưởng có trình độ học vấn cấp 1 và cấp 2 chiếm trên 75%. Số lao động là 3,18±1,26 người/tàu; trong đó lao động thuê mướn là 1,35±1,12 người/tàu.Công suất tàu khai thác của nghề lưới kéo là cao nhất (46,66±21,60 CV) và thấp nhất là nghề câu (28,86±10,73 CV). Về ngư trường khai thác, cách đất liền từ 5,22 đến 7,33 hải lý với độ sâu từ 6,25 – 12,5 m. Kích thước mắt lưới nhỏ nhất của các loại ngư cụ lần lượt là lưới rê (38.87±19.89 mm), lưới kéo (22.11±7.77 mm) và đáy biển (18.0±0 mm).</subfield>
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   <subfield code="a">Aquatic resources,Nguồn lợi thủy sản</subfield>
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  <datafield tag="904" ind1=" " ind2=" ">
   <subfield code="i">Tuyến</subfield>
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   <subfield code="c">tvtrong</subfield>
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   <subfield code="a">Trung tâm Học liệu Trường Đại học Cần Thơ</subfield>
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