Gashaw Tesfaye

Gashaw Tesfaye
Ethiopian Institute of Agricultural Research | EIAR

PhD

About

22
Publications
35,151
Reads
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209
Citations
Introduction
Gashaw Tesfaye currently works at Ethiopian Institute of Agricultural Research. Gashaw does research in Aquatic Ecology, Fisheries, Aquaculture, Limnology and Marine Biology. Their most recent publication is 'Population and Ecosystem-based Fisheries Assessment of the Rift Valley Lake Koka, Ethiopia.'
Additional affiliations
April 2012 - present
Leibniz Centre for Tropical Marine Research (ZMT)
Position
  • PhD position

Publications

Publications (22)
Preprint
The purpose of this study was to assess the effect of emodin supplementation on biochemical variables, antioxidant activity, heat shock protein gene expression, and prawn intestinal morphology (Macrobrachium rosenbergii) (Macrobrachium rosenbergii). Three feeds containing 0 percent (T1), 25 mg/ kg (T2), and 50 mg/ kg (T3) of emodin were formulated...
Article
Full-text available
Global inland freshwater fisheries support livelihoods for several million people. These important resources, however, are suffering from excessive overfishing as a result of increasing fishing pressures attributable to an increased human population and subsequent demand for food and economic livelihoods. To this end, very little is known about the...
Article
Full-text available
The study aimed to determine the diet composition, dietary change and diel feeding pattern of Oreochromis niloticus, in Lake Langeno. Fish specimens were collected monthly from July 2017 to June 2018 using a beach seine with 40 mm mesh size and scoop-net with small mesh size (1.0 mm). A total of 264 non-empty fish stomachs were examined for dietary...
Article
The study was conducted to estimate the maximum sustainable yield (MSY) and optimum level of fishing effort for Nile tilapia (Oreochromis niloticus) stock in Lake Chamo, Ethiopia. Data were collected from eight major landing sites of Lake Chamo for three days in a week for ten months (February to November, 2018). The total length, sample weight and...
Article
The Ethiopian fishery serves as the main source of affordable protein-rich food and essential macro-nutrients, and is the primary source of livelihood for many households, particularly for those who are residing in the vicinity of major water bodies. Despite its importance, the resources are facing multifaceted challenges including high fishing pre...
Article
Full-text available
Effective management is essential for small-scale fisheries to continue providing food and livelihoods for households, particularly in developing countries where other options are often limited. Studies on the population dynamics and stock assessment on fishery target species are thus imperative to sustain their fisheries and the benefits for the s...
Article
Full-text available
The study explores the impacts of varying gillnet mesh size and fishing level on yield per recruit (Y/R), escapement spawning stock (ESS) and mega-spawners (MS) of three widely distributed freshwater fishery target species. Y/R is maximised when the optimal length of capture (L cap) is above the size of maturity (L 50). However, the unimodal shape...
Article
Full-text available
We evaluated the statistical models that best describe the selectivity of common fishing gears used in Lake Koka for four freshwater species widely distributed in Ethiopia and elsewhere: tilapia Oreochromis niloticus (L.), catfish Clarias gariepinus (B.), common carp Cyprinus carpio (L.), and barb Labeobarbus intermedius (R.). Sampling was conducte...
Article
Full-text available
This study reviews fisheries and management practices and provides estimates of the present and potential fish yield of Ethiopian inland fisheries. Published and unpublished sources were used, 28 years of fisheries data were analyzed and empirical models were applied to estimate potential yield. Ethiopian waters hold about 180 fish species, some fr...
Article
Full-text available
Abstract The adaptability status and reproductive success of the introduced fish Nile Tilapia (Oreochromis niloticus L.) and common carp (Cyprinus carpio L., 1758) in Fincha reservoir, Ethiopia were studied on monthly basis from July 2006 to August 2007. Gill nets of different mesh size (60 mm, 80 mm, 100 mm, 120 mm and 140 mm, stretched mesh size)...
Article
Full-text available
So far better information exists on the physico-chemical features and biotic composition of natural lakes contrasting to reservoirs and artificial lakes in Ethiopia. However, scientific information on the biotic and physico-chemical features of a reservoir is pivotal to use it for fish production along with its principal objectives. It was therefor...
Conference Paper
Full-text available
Aquaculture is the rational cultivation of aquatic organizms in a confined water area where the practice of both agriculture and animal husbandry are applicable. The predominant type of aquaculture activity in Ethiopia is the culture based fishery that involve enhancement of the natural fish biomass in multipurpose small water bodies. The other typ...
Conference Paper
Full-text available
Fish is a healthy and often a traditional food resource in the rural areas of many developing countries. However, providing it to a growing population is becoming a challenge for most developing nations including Ethiopia. So, strategies that are less resource intensive, relatively easy to transfer and adapt technically have to be developed. The E...
Article
The aquatic habitats provide many socio-economic and a wide range of ecological services. The Ethiopian Rift valley is part of the Great East African Rift valley and the floor of the Ethiopian Rift valley contains many lakes which are home for about 30 different native fish species and more alien fish species. Some of the Rift valley lakes are used...
Article
Full-text available
Some limnological aspects of Koka reservoir, a shallow tropical artificial lake, Ethiopia Abstract So far better information exists on the physico-chemical features and biotic composition of natural lakes contrasting to reservoirs and artificial lakes in Ethiopia. However, scientific information on the biotic and physico-chemical features of a rese...
Article
The aquatic habitats provide many socio-economic and a wide range of ecological services. The Ethiopian Rift valley is part of the Great East African Rift valley and the floor of the Ethiopian Rift valley contains many lakes which are home for about 30 different native fish species and more alien fish species. Some of the Rift valley lakes are used...
Article
The aquatic habitats provide many socio-economic and a wide range of ecological services. The Ethiopian Rift valley is part of the Great East African Rift valley and the floor of the Ethiopian Rift valley contains many lakes which are home for about 30 different native fish species and more alien fish species. Some of the Rift valley lakes are used...
Article
The aquatic habitats provide many socio-economic and a wide range of ecological services. The Ethiopian Rift valley is part of the Great East African Rift valley and the floor of the Ethiopian Rift valley contains many lakes which are home for about 30 different native fish species and more alien fish species. Some of the Rift valley lakes are used...
Article
Full-text available
Ethiopia being a landlocked country since 1993, it only comprises inland water bodies such as lakes, rivers, reservoirs, ponds and wetlands including marshes, floodplain and swamps. These aquatic habitats provide many socio-economic and a wide range of ecological services. The Ethiopian Rift Valley is part of the Great East African Rift Valley and...
Article
Full-text available
In Ethiopia, the tilapia, Oreochromis niloticus, is an extremely important fish from ecological, economic and social point of view. Information on biological parameters like the size at first maturity (L50), Fultons condition factor (K) and length weight relationship are very crucial for the sustainable management of the fishery. Therefore, the pre...

Questions

Question (1)
Question
I installed the latest version of SigmaPlot 14.5 recently. When I adjusted graph legends and other plot properties to create publication quality graphs, the programme crashed every now and then. After some time, I managed to create the desired graph. However, it refuses to export the graph without any error message. Can anyone help to fix this problem?

Network

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Projects

Projects (3)
Project
The African Inland Fisheries Network is a group of scientists and researchers whose research interests promote the recommendations emerging from the Global Conference on Inland Fisheries, Freshwater, Fish and the Future. The recommendations are contained in Food and Agriculture Organization (FAO) and Michigan State University (MSU) policy document titled The Rome Declaration: Ten Steps to Responsible Inland Fisheries. This network has emerged out of the growing evidence showing that countries in Africa face intense challenges in the management of inland fisheries. The challenges include a lack of reliable data on target fish stocks, weak institutional capacity and lack of management that adequately enforce sustainable use of inland fisheries resources. The goal of this network is to empower scientists and resource managers in the region to engage in activities that strengthen the institutional capacity of the countries to deliver quality training, to improve information, communication, and governance relating to inland aquatic ecosystems and to conduct research that improves the assessment of biological production to enable science-based management of inland fisheries resources in the region.