Theses and Dissertations


Title: A study of the feeding habits, growth rate, reproduction and production of Tilapia mossambica Peters and T. aurea (Steindachner) stocked separately and together in ponds

Name: Sumawidjaja, Kusman

Degree: PhD

Chair: Dr. Eddie W. Shell

Resides: FAA Library

University: Auburn

Location: Auburn, Alabama

Date: 1969

Pages: 67

Keywords: Feeding Habits,Growth Rate,Reproduction,Tilapia mossambica,Tilapia aurea.

Abstract:

Java tilapia (Tilapia mossambica) and Nile tilapia (T. aurea) stocked separately and together in earthen ponds had similar feeding habits. Java tilapia of a given length had a larger mouth than Nile tilapia of the same length, but they had the same size stomachs. The two tilapia fed mostly on pelleted feed, organic detritus and planktonic algae. The Nile tilapia grew to a larger size than the Java tilapia, and the males of each species grew to a larger size than the females. The relative growth rates of Java and Nile tilapia decreased with the increase of the percentage of Nile tilapia in the population. Both species were observed spawning at the same time and within the same areas in the pond: yet no hybrids were detected. The total weight of harvestable fish increased with the increase of the percentage of the Nile tilapia in the population. The net productions in ponds containing both species of tilapia were greater than that in the pond containing Java tilapia only. The highest production was 2,254.4 pounds per acre. This was obtained by stocking Java and Nile tilapia at a ratio of 2:1 respectively.

Download: Download

203 Swingle Hall | Auburn, Alabama 36849 | (334) 844-4786 |
Website Feedback | Privacy | Copyright ©