Tropical spiny lobster (Panulirus ornatus) farming in Vietnam - bioeconomics and perceived constraints to development

Abstract

This paper presents bioeconomic data on lobster farming inVietnam, and perceived constraints to the development of the industry. The farms were found to be pro¢table, with an average bene¢t cost ratio of 1.44 and an average net revenue of 262 million -VND year À 1 (or just under US$15000 year À 1 ). Investment in the enterprise is high compared with other enterprises in the region. However, disease has the potential to devastate lobster crops and there is little information available to lobster farmers about disease prevention and management. Hence, the lobster enterprise is a high-risk high-return industry. The predominant perceived constraints to the development of lobster operations include water quality and temperature issues, insu⁄cient access to credit, good-quality a¡ordable feed and accurate information about technology improvements in lobster farming. It seems that improving the livelihood of lobster farmers inVietnam is dependent on reducing their dependence on wild stocks for seed and feed, improving access to credit and improving technical and market information £ows. Such improvements are likely to lead to higher pro¢tability, given high export demand and hence sustained high prices for their lobster product.

Bioeconomic Analysis of Extensive Mud Crab Farming in Vietnam and Analysis of Improved Diets

“…Manufactured diets have not been produced yet, although a significant research effort has been focused in this area. Pelleted diets have been manufactured specifically for catfish and shrimp farming in Vietnam although they are used in other seafood farming enterprises, such as tilapia (Petersen et al, 2009c). These diets are typically about 10,000 -20,000 VND=kg with FCRs of approximately 2.0 (wet weight).…”

Diseases of wild and cultured juvenile crustaceans: Insights from below the minimum landing size

“…Lobster aquaculture operations have not progressed to the level of penaeid shrimp production, because of economic (e.g., feed cost; Jeffs and Hooker, 2000;Petersen and Phuong, 2010) and logistic constraints (e.g., long larval durations). However, there continue to be attempts at grow-out of hatched larvae, wild caught pueruli, and juveniles (Smith et al, 2005;Ritar et al, 2006;Jensen et al, 2011), but disease has emerged as a factor in need of consideration (Kittaka, 1997;Dahlgren and Staine, 2007).…”

Modelo explicativo de la rentabilidad de las empresas de piscicultura marina. Aplicación empírica a la cría de dorada (Sparus aurata) y lubina (Dicentrarchus labrax) en España

“…La revisión de la literatura científica sobre piscicultura ha permitido identificar un importante número de trabajos que utilizan la rentabilidad de la actividad como indicador del efecto económico del factor analizado, entre los que cabe destacar los que la utilizan para analizar: el rendimiento económico de diferentes tipos de alimentación (Urban Jr. y Pruder, 1991;Moñino et al, 2002;Sánchez Lozano et al, 2007;Petersen et al, 2011), la viabilidad económica de la explotación comercial de una especie o producto (Oca et al, 2002;Jeffs y Hooker, 2000;Keys et al, 2004;PootLópez y Gasca-Leyva, 2009;Shamshak y Anderson, 2009;García y García, 2010;Zúñiga, 2010), y el impacto que tienen las condiciones ambientales (Hatch et al, 1998;León et al, 2006;Hernández et al, 2007), el sistema de producción (Losordo y Westerman, 1994;Thongrak et al, 1997;Goode et al, 2002;Lever et al, 2004;Taylor et al, 2006;Liu;Sumaila, 2007y Buck et al, 2010 o la localización de la explotación (Moksness et al, 1998;Gasca-Leyva et al, 2002;Irz y McKenzie, 2003;Bozoglu y Ceyhan, 2009;Miao et al, 2009;Petersen y Phuong, 2010;Huang et al, 2011) sobre el resultado económico del proceso de cultivo.…”