Chapter: 01 INTRODUCTION 1.1
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TECHNICAL EFFICIENCY of IMPROVED EXTENSIVE SHRIMP FARMING in CA MAU PROVINCE, VIETNAM Master Thesis in International Fisheries A
TECHNICAL EFFICIENCY OF IMPROVED EXTENSIVE SHRIMP FARMING IN CA MAU PROVINCE, VIETNAM By PHAM BA VU TUNG Master Thesis in International Fisheries and Aquaculture Management and Economics (30 ECTS) The Norwegian College of Fishery Science University of Tromso, Norway & Nhatrang University, Vietnam MAY 2010 DECLARATION This thesis has composed in its entirety by the candidate and no part of this work has been submitted for any other degree. Candidate: Pham Ba Vu Tung i Abstract The purpose of this thesis is to measure the mean technical efficiency of improved extensive shrimp farming in Cai Nuoc and Dam Doi districts, Ca Mau Province, Vietnam. Data Envelopment Analysis Input-oriented variable return to scale were used in this thesis and estimating technical super-efficiency was regressed to the pond area, farmer experiences, black tiger shrimp, mud crab stocking density and education of farmers. Technical efficiency of observation farms was the identified determinant factor, results indicated that pond area, experience and education of the owners of the shrimp farms were the mainly positive factors that influence efficiency of improved extensive shrimp farming in both districts. Nevertheless, only in Dam Doi district shrimp stocking density have a negative relationship with technical efficiency. A comparison between the technical efficiency results of the two districts showed that the farms in Cai Nuoc were more highly efficient than farms in Dam Doi District. To improve technical efficiency, the government should conduct training on techniques in shrimp polyculture, establish farmers’ organization should assist to help farmers share their experiences and provide mutual help. In addition, extension officers should organize regular training courses in shrimp polyculture model to help farmers in both districts increasing productivity. -
Kamath, Sandip Dayanand (2014) Identification and Characterisation of Novel Shellfish Allergens for Improved Diagosis. Phd Thesis, James Cook University
ResearchOnline@JCU This file is part of the following reference: Kamath, Sandip Dayanand (2014) Identification and characterisation of novel shellfish allergens for improved diagosis. PhD thesis, James Cook University. Access to this file is available from: http://researchonline.jcu.edu.au/43779/ The author has certified to JCU that they have made a reasonable effort to gain permission and acknowledge the owner of any third party copyright material included in this document. If you believe that this is not the case, please contact [email protected] and quote http://researchonline.jcu.edu.au/43779/ Identification and Characterisation of Novel Shellfish Allergens for Improved Diagnosis Thesis submitted by Sandip Dayanand KAMATH M.Sc. (Biotechnology) B.Pharm. (Pharmacy) For the degree of Doctor of Philosophy in the College of Public Health, Medical and Veterinary Sciences James Cook University October, 2014 i Statement of Contribution STATEMENT ON THE CONTRIBUTION OF OTHERS Nature of Assistance Contribution Name and Affiliation Intellectual support Project plan and • A/Prof. Andreas Lopata, James Cook development University • Prof. Jennifer Rolland, Monash University • Prof. Robyn O’Hehir, Monash University and The Alfred Hospital • Prof. Katie Allen, Murdoch Childrens Research Institute, • Prof. James Burnell, James Cook University Editorial support • A/Prof. Andreas Lopata, James Cook University • Prof. Jennifer Rolland, Monash University • Prof. Robyn O’Hehir, Monash University and The Alfred Hospital Grant proposal writing • -
Major Issues in Shrimp Fisheries
PART 1 MAJOR ISSUES IN SHRIMP FISHERIES 9 1. History and development of shrimp fishing Shrimp has been caught by traditional gear for centuries in many parts of the world. In numerous regions this small-scale fishing continues today, as in China (stow nets), Indonesia (lift nets, push nets, beach seines, gillnets), Mexico (barriers across estuaries), and Madagascar (nets, weirs and traps). Such small-scale fishing is responsible for a surprisingly large proportion of the world’s shrimp catch (see Chapter 3, section Catches by shrimp species). The history of modern industrial shrimp fishing is closely related to the development of mechanized trawling. Trawling from sailing vessels in Europe has been carried out for hundreds of years. Two events in the latter part of the nineteenth century caused an increase in trawling activity in Britain: the invention of the otter trawl and the increasing use of steam propulsion in fishing vessels. Until the mid-1800s, most large- scale trawling used beam trawl gear, which relied on a heavy beam to keep the net open. Because all fishing vessels at that time used the wind for their towing power, the weight of this beam was a major constraint on the size of net that could be towed. Boards using the force of passing water to hold open the net were invented in Britain in about 1860. The use of these boards (later called otter boards1) did not become widespread until the late 1880s, when Danish fishers used them to spread their plaice seines. Steam propulsion for fishing vessels began in about 1880. -
Bathyraja Kincaidii
DIET AND ECOMORPHOLOGY OF THE SANDPAPER SKATE, BATHYRAJA KINCAIDII (GARMAN,1908) FROM THE EASTERN NORTH PACIFIC A thesis submitted to the faculty of Moss Landing Marine Laboratories and California State University, Monterey Bay in partial fulfillment of the requirements for the degree of Master of Science in Marine Science by Christopher Scott Rinewalt May 2007 Copyright 2007 Christopher Scott Rinewalt ALL RIGHTS RESERVED ABSTRACT DIET AND ECOMORPHOLOGY OF THE SANDPAPER SKATE, BATHYRAJA KINCAIDII (GARMAN,1908) FROM THE EASTERN NORTH PACIFIC by Christopher Scott Rinewalt To determine diet, the stomach contents of sandpaper skates, Bathyraja kincaidii (Garman, 1908), were examined from a limited depth and geographic area off central California and from a wider depth and area range along the eastern North Pacific (ENP). The overall diet was dominated by euphausiids and shrimps, but polychaetes, squids, and gammarid amphipods were important secondary prey. Shrimp-like crustaceans, polychaetes, and teleosts were of similar importance in both data sources, but small benthic crustaceans and crabs were comparatively more important in the diet of skates from the ENP whereas cephalopods were more important in central Californian samples. A three-factor MANOVA demonstrated significant differences in the importance of major prey categories by sex, maturity status, and oceanographic season in the central California data. These three main factors explained more variation in diet than interactions between the factors, and season explained the most variance overall. A detailed analysis of the seasonal variation among the prey categories indicated that environmental abundance changes in the most important prey, euphausiids, were coupled with changes in the importance of other prey. -
Farming of Prawns and Shrimps
ISSN – 0115-5369 Extension Manual No. 5 Third Edition August 1983 Farming of Prawns and Shrimps Florentino Apud, Jurgenne H. Primavera and Pastor L. Torres, Jr. Extension Manual No. 5 ISSN – 0115-5369 Third Edition August 1983 Farming of Prawns and Shrimps Florentino Apud, JurgenneH. Primavera and Pastor L. Torres, Jr. AQUACULTURE DEPARTMENT Southeast Asian Fisheries Development Center Tigbauan, Iloilo, Philippines TABLE OF CONTENTS Page PREFACE ................................................................................................................. iii I. INTRODUCTION A. Terminology ....................................................................................................... 1 B. Kinds of prawns and shrimps.............................................................................. 1 C. Life cycle.... ....................................................................................................... 4 D. Culture systems of sugpo................................................................................... 5 II. BASIC CONSIDERATIONS A. Choice of farm site ............................................................................................ 8 B. Pond specifications ......................... ................................................................... 9 C. Pond ecosystem ................................................................................................. 14 D. Differences between prawn and milkfish culture .............................................. 18 III. SEED SUPPLY A. Wild fry