Pakistan Journal of Nematology


pakjnema@gmail.com,info@pjn.com.pk


Paper Details
Paper ID PJN-2018-2
Title Nematode community structure and trophic group composition of fresh water nematodes from Sindh, Pakistan
AuthorsK. Nasira and S. Shamim
Abstract

Present study provides the information and estimation on fresh water nematode community structure from various water sources (river, lakes, canals, ponds, reservoirs and irrigation sources: tube well and tanks) and evaluation of feeding categories at eight collecting sites of Sindh. After analysis it was found that different parameters of community structure of fresh water nematodes varied considerably at different surveyed sites. Nematode community analysis revealed that frequency (absolute frequency, relative frequency), density (relative density) and prominence value were variable for nematode population within localities. Relative density of fresh water nematode species of studied sites ranged between 0.7-10.4 % while absolute frequency and relative frequency ranged between 15-98% and 0.86-8.8%, respectively. Analysis of overall occurrence percentage of feeding groups revealed that predators dominated the entire nematode community (35%) followed by bacterivores (32.5%), herbivores (20%), algal feeders and fungivores shared the same occurrence percentage (5%) while the least occurrence percentage was of omnivores (2.5%). These studies add to the knowledge of diversity of fresh water nematodes and evidence on their categorization of the basis of feeding habits and the community structure.Present study provides the information and estimation on fresh water nematode community structure from various water sources (river, lakes, canals, ponds, reservoirs and irrigation sources: tube well and tanks) and evaluation of feeding categories at eight collecting sites of Sindh. After analysis it was found that different parameters of community structure of fresh water nematodes varied considerably at different surveyed sites. Nematode community analysis revealed that frequency (absolute frequency, relative frequency), density (relative density) and prominence value were variable for nematode population within localities. Relative density of fresh water nematode species of studied sites ranged between 0.7-10.4 % while absolute frequency and relative frequency ranged between 15-98% and 0.86-8.8%, respectively. Analysis of overall occurrence percentage of feeding groups revealed that predators dominated the entire nematode community (35%) followed by bacterivores (32.5%), herbivores (20%), algal feeders and fungivores shared the same occurrence percentage (5%) while the least occurrence percentage was of omnivores (2.5%). These studies add to the knowledge of diversity of fresh water nematodes and evidence on their categorization of the basis of feeding habits and the community structure.

Pages 1-26
Volume 36
Issue 1
File Name Download
news