In an attempt to describe the benthic macroinvertebrate assemblage of Lake Kenyatta and recommend possible interventions for sustainable management, sampling was done at different stations using an Eckman grab and a scoop net. At each station, six samples were taken (three grabs and three scoops). The samples were washed using a 300µm sieve, sorted live and identified to genus level and where possible to species level using appropriate keys. The specimens were further categorized into functional feeding guilds. The data were then analysed for diversity, evenness, abundance and dominance. Forty two species in 25 families and 13 orders were recorded. The organisms were further grouped into 4 functional feeding groups. The order Pulmonata dominated the macroinvertebrates sampled with 34.3% relative abundance while the lowest were Rhynchobdellida and Lepidoptera with 0.3% each. The high abundance of mollusks in the lake is probably an indication of absence of a predator. It is thus recommended that a fish species be introduced to convert these mollusks into fish biomass. This will enhance the economic gains and reduce the risk of bilhazia infestation since the host snail exists within the lake.
| Published in | International Journal of Environmental Monitoring and Analysis (Volume 2, Issue 5) |
| DOI | 10.11648/j.ijema.20140205.12 |
| Page(s) | 239-243 |
| Creative Commons |
This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited. |
| Copyright |
Copyright © The Author(s), 2014. Published by Science Publishing Group |
Diversity, Tolerance, Feeding Guilds
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APA Style
Patrick Oduor Orwa, Reuben Omondi, Eric Okuku, William Ojwang, Stephen Mwangi Njuguna. (2014). Composition, Abundance and Feeding Guilds of Macroinvertebrates in Lake Kenyatta, Kenya. International Journal of Environmental Monitoring and Analysis, 2(5), 239-243. https://doi.org/10.11648/j.ijema.20140205.12
ACS Style
Patrick Oduor Orwa; Reuben Omondi; Eric Okuku; William Ojwang; Stephen Mwangi Njuguna. Composition, Abundance and Feeding Guilds of Macroinvertebrates in Lake Kenyatta, Kenya. Int. J. Environ. Monit. Anal. 2014, 2(5), 239-243. doi: 10.11648/j.ijema.20140205.12
AMA Style
Patrick Oduor Orwa, Reuben Omondi, Eric Okuku, William Ojwang, Stephen Mwangi Njuguna. Composition, Abundance and Feeding Guilds of Macroinvertebrates in Lake Kenyatta, Kenya. Int J Environ Monit Anal. 2014;2(5):239-243. doi: 10.11648/j.ijema.20140205.12
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Download@article{10.11648/j.ijema.20140205.12,
author = {Patrick Oduor Orwa and Reuben Omondi and Eric Okuku and William Ojwang and Stephen Mwangi Njuguna},
title = {Composition, Abundance and Feeding Guilds of Macroinvertebrates in Lake Kenyatta, Kenya},
journal = {International Journal of Environmental Monitoring and Analysis},
volume = {2},
number = {5},
pages = {239-243},
doi = {10.11648/j.ijema.20140205.12},
url = {https://doi.org/10.11648/j.ijema.20140205.12},
eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijema.20140205.12},
abstract = {In an attempt to describe the benthic macroinvertebrate assemblage of Lake Kenyatta and recommend possible interventions for sustainable management, sampling was done at different stations using an Eckman grab and a scoop net. At each station, six samples were taken (three grabs and three scoops). The samples were washed using a 300µm sieve, sorted live and identified to genus level and where possible to species level using appropriate keys. The specimens were further categorized into functional feeding guilds. The data were then analysed for diversity, evenness, abundance and dominance. Forty two species in 25 families and 13 orders were recorded. The organisms were further grouped into 4 functional feeding groups. The order Pulmonata dominated the macroinvertebrates sampled with 34.3% relative abundance while the lowest were Rhynchobdellida and Lepidoptera with 0.3% each. The high abundance of mollusks in the lake is probably an indication of absence of a predator. It is thus recommended that a fish species be introduced to convert these mollusks into fish biomass. This will enhance the economic gains and reduce the risk of bilhazia infestation since the host snail exists within the lake.},
year = {2014}
}
TY - JOUR T1 - Composition, Abundance and Feeding Guilds of Macroinvertebrates in Lake Kenyatta, Kenya AU - Patrick Oduor Orwa AU - Reuben Omondi AU - Eric Okuku AU - William Ojwang AU - Stephen Mwangi Njuguna Y1 - 2014/09/30 PY - 2014 N1 - https://doi.org/10.11648/j.ijema.20140205.12 DO - 10.11648/j.ijema.20140205.12 T2 - International Journal of Environmental Monitoring and Analysis JF - International Journal of Environmental Monitoring and Analysis JO - International Journal of Environmental Monitoring and Analysis SP - 239 EP - 243 PB - Science Publishing Group SN - 2328-7667 UR - https://doi.org/10.11648/j.ijema.20140205.12 AB - In an attempt to describe the benthic macroinvertebrate assemblage of Lake Kenyatta and recommend possible interventions for sustainable management, sampling was done at different stations using an Eckman grab and a scoop net. At each station, six samples were taken (three grabs and three scoops). The samples were washed using a 300µm sieve, sorted live and identified to genus level and where possible to species level using appropriate keys. The specimens were further categorized into functional feeding guilds. The data were then analysed for diversity, evenness, abundance and dominance. Forty two species in 25 families and 13 orders were recorded. The organisms were further grouped into 4 functional feeding groups. The order Pulmonata dominated the macroinvertebrates sampled with 34.3% relative abundance while the lowest were Rhynchobdellida and Lepidoptera with 0.3% each. The high abundance of mollusks in the lake is probably an indication of absence of a predator. It is thus recommended that a fish species be introduced to convert these mollusks into fish biomass. This will enhance the economic gains and reduce the risk of bilhazia infestation since the host snail exists within the lake. VL - 2 IS - 5 ER -
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