Parasitology Research

, Volume 115, Issue 4, pp 1501–1508 | Cite as

Gill monogeneans of Oreochromis niloticus (Linnaeus, 1758) and Oreochromis leucostictus (Trewavas, 1933) in Lake Naivasha, Kenya

  • Nehemiah Mogoi RindoriaEmail author
  • Lewis Kamau Mungai
  • Andrew Wamalwa Yasindi
  • Elick Onyango Otachi
Original Paper


An investigation of gill monogeneans from the Nile tilapia Oreochromis niloticus and the blue spotted tilapia Oreochromis leucostictus (50 individuals per species) was done between the months of November 2014 to February 2015 in Lake Naivasha, Kenya. Standard parasitological procedures were used to examine fish gills for the presence of monogeneans. The observed monogeneans were collected, preliminarily identified using identification keys, quantified and fixed in 4 % formalin for morphological studies and absolute ethanol for molecular studies. Four parasite species comprising of three species of the genus Cichlidogyrus and one species of the genus Scutogyrus were recovered. Cichlidogyrus sclerosus and Cichlidogyrus tilapiae infested both fish species but the C. sclerosus was most prevalent in O. leucostictus (Prevalence (P) = 100 %, Mean intensity (MI) = 3.4) and C. tilapiae in O. niloticus (P = 8 %, MI = 4). Cichlidogyrus tilapiae had a P = 12 % and MI = 5.0 and a P = 6 % and MI = 3.0 in O. niloticus and O. leucostictus, respectively. Cichlidogyrus halli (P = 4 %, MI = 15.5) and Scutogyrus gravivaginus (P = 2 %, MI = 1.0) were only found in O. leucostictus. This is the first time that these monogeneans have been identified from Lake Naivasha, Kenya, presenting new geographical records. It was concluded that Ancyrocephalids (Cichilidogyrus spp.) dominated the two cichlid fish species in Lake Naivasha, Kenya.


Monogenean Cichlidogyrus Scutogyrus Lake Naivasha Tilapia 



We acknowledge the National Commission of Science and Technology (NACOSTI) for funding this research, the Department of Biological Sciences of Egerton University for allowing us use their laboratory plus equipment, and the staff of the Kenya Marine and Fisheries Research Institute (KMFRI) Naivasha station that helped in fishing.

Compliance with Ethical Standards

Conflict of interests

The authors declare that there are no competing interests.


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Copyright information

© Springer-Verlag Berlin Heidelberg 2015

Authors and Affiliations

  • Nehemiah Mogoi Rindoria
    • 1
    Email author
  • Lewis Kamau Mungai
    • 1
  • Andrew Wamalwa Yasindi
    • 1
  • Elick Onyango Otachi
    • 1
  1. 1.Department of Biological SciencesEgerton UniversityEgertonKenya

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