Tilapia is the second most farmed fish in tropical and sub-tropical countries worldwide. This study investigated effect of replacing meal by Spirulina platensis (groups fed with 5%, 10% 15% Spirulina) on growth Nile tilapia O. niloticus juveniles. Intestinal microbiota has been studied MiSeq Illumina sequencing. No significant differences (P > 0.05) were observed for protein, carbohydrate li...

Abstract The use of agrochemicals in agriculture may impact aquatic ecosystems, particularly influencing the stream insect communities. Among insects, family Chironomidae is most abundant and species-diverse group found freshwater ecosystems. However, southern hemisphere, studies with are still sparse, compared to Europe North America. present study evaluates responses species (Insecta: Diptera...

1. The shallow ponds of the nature reserve ‘De Maten’ form a metacommunity, in which individual ponds are highly interconnected via a system of overflows and rivulets. This study reports on the relations between cladoceran species richness and (a) connectivity patterns and (b) local environmental variables. 2. No relation was found between local species richness and three connectivity variables...

Background: Some members of family Calliphoridae are myiasis agents and mechanical vectors of some pathogens. The aim of this study was to measure the biodiversity and synanthropy behaviour of Calliphoridae flies in Abadan, Khuzestan province. Methods:Data were collected based on a monthly schedule during March to December 2014 in urban, semi-urban and rural e...

The purpose of this study is to determine the woody species diversity in Sweet chestnut tree, Hazel-tree and Italian cypress ecosystems in the Guilan forests. A lozeng 0.5 ha sample plot was selectively established on each site. In the Sweet chestnut ecosystems , 4 sites were classified, whereas 10 sites of Hazel tree and Italian cypress ecosystems were classified based on species composition. ...

The Sesaot Nature Tourism Forest Area is a tourist area and an that used for the production of several plantation commodities, along with increasing human activities in area, it raises questions related to state its ecosystem, one aspect reflects namely diversity soil fauna. sample locations are divided into three paths based on characteristics waterway which niche points located river flow, mi...

Bale Mountains National Park is one of the protected areas in Ethiopia that holds largest area Afroalpine habitat Africa and second stand moist tropical forest. Nevertheless, human settlements, overgrazing, recurrent fire are main problems park. This study aimed to determine effects human-induced landscape change floristic composition structure The vegetation data were collected systematically ...