Abstract A number of studies have highlighted the promising growth of Egyptian tilapia aquaculture and the role of genetically improved strains in this development, such as the Abbassa Nile tilapia (Oreochromis niloticus, Linneaus, 1758). However, few studies have explored the link between aquaculture development and changes in fish demand among low-income consumers. This study combines household budgeting questionnaires and morphometric tilapia trait rankings conducted in the peak market season of 2017 to examine patterns of tilapia consumption and preferences among low-income women and men consumers across Egypt. Analysis of variance tests and a hierarchical logistic regression model were employed to determine effects of sex, age, educational status, household size, presence of children, food dependency ratio and location on tilapia consumption and trait preferences. Results showed significant differences in tilapia consumption between Lower and Upper Egypt. Greatest heterogeneity in tilapia trait rankings was found in preferences for total body weight, as well as for body width, body length and tilapia head traits. Models predicted that younger women consumers with children in Lower Egypt were more likely to consume smaller tilapia sizes and prefer larger tilapia head traits. This study offers the first evidence base of tilapia trait preferences of low-income consumers to genetic selection programmes considering the adoption of pro-poor and gender-responsive breeding objectives.

中文翻译：

---

埃及低收入女性和男性消费者对养殖罗非鱼的选择性育种性状偏好；对扶贫和性别敏感鱼类育种计划的影响

摘要 一些研究强调了埃及罗非鱼养殖的有希望的增长以及遗传改良品系在这种发展中的作用，例如阿巴萨尼罗罗非鱼（Oreochromis niloticus，Linneaus，1758）。然而，很少有研究探讨水产养殖发展与低收入消费者鱼类需求变化之间的联系。本研究结合了家庭预算调查问卷和 2017 年市场旺季进行的形态测量罗非鱼特征排名，以检查埃及低收入女性和男性消费者的罗非鱼消费模式和偏好。采用方差检验分析和分层逻辑回归模型来确定性别、年龄、教育状况、家庭规模、是否有孩子、罗非鱼消费和性状偏好的食物依赖率和位置。结果显示，下埃及和上埃及的罗非鱼消费量存在显着差异。罗非鱼性状排名中最大的异质性体现在对总体重以及体宽、体长和罗非鱼头部性状的偏好上。模型预测，下埃及有孩子的年轻女性消费者更有可能消费较小的罗非鱼尺寸，并且更喜欢较大的罗非鱼头部特征。本研究提供了第一个证据基础，证明低收入消费者对基因选择计划的罗非鱼性状偏好，考虑到采用有利于穷人和性别敏感的育种目标。罗非鱼性状排名中最大的异质性体现在对总体重以及体宽、体长和罗非鱼头部性状的偏好上。模型预测，下埃及有孩子的年轻女性消费者更有可能消费较小的罗非鱼尺寸，并且更喜欢较大的罗非鱼头部特征。本研究提供了第一个证据基础，证明低收入消费者对基因选择计划的罗非鱼性状偏好，考虑到采用有利于穷人和性别敏感的育种目标。罗非鱼性状排名中最大的异质性体现在对总体重以及体宽、体长和罗非鱼头部性状的偏好上。模型预测，下埃及有孩子的年轻女性消费者更有可能消费较小的罗非鱼尺寸，并且更喜欢较大的罗非鱼头部特征。本研究提供了第一个证据基础，证明低收入消费者对基因选择计划的罗非鱼性状偏好，考虑到采用有利于穷人和性别敏感的育种目标。