Mortality estimates of the four major Cichlid fishes of Umuoseriche Lake, Imo State, Nigeria

Anene, Afamdi (2004) Mortality estimates of the four major Cichlid fishes of Umuoseriche Lake, Imo State, Nigeria. In: 18th Annual Conference of the Fisheries Society of Nigeria (FISON) , 8-12 December, 2003 ,Owerri, Nigeria, pp. 194-199.

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Abstract

The mortality of the four major cichlid fishes of Urnuoseriche Lake is the subject of this paper. Mortality I as estimated by five techniques, vary amongst the cichlid fishes, viz, Tilapia carbrae, Tilapia mariac, Tilapia zilli cend (hrornoditilapfa guntheri. The highest mortality rate was recorded for T mariac where the total mortality (Z) was 2.06; and natural mortality (M) was 1.8949. This species was also the most highly exploited species of fish with an exploitation ratio of0.566 (56.6%) and exploitation rate of 0.494. The least exploited cichlid fish is (. gun/hen where an exploitation ratio of 0.43209%) and exploitation rate of 0.2225 was recorded. In C'. guntheni, total mortality was 0.726 and natural mortality was 0.413 1. In T zilli, total mortality was 1.0547 wile exploitation ratio was 0.3674 (3 6.74%) and an exploitation rate was 0.2394. In T cahrae. total mortality was 1.8662: exploitation ratio was 0.4786 with an exploitation rate of 0.4045. (7 page document)

Item Type: Conference or Workshop Item
Title: Mortality estimates of the four major Cichlid fishes of Umuoseriche Lake, Imo State, Nigeria
Personal Creator/Author:
CreatorsEmail
Anene, Afamdi
Page Range: pp. 194-199
Date: 2004
Event Title: 18th Annual Conference of the Fisheries Society of Nigeria (FISON)
Event Type: Conference
Event Location: Owerri, Nigeria
Event Dates: 8-12 December, 2003
Issuing Agency: Fisheries Society of Nigeria
Uncontrolled Keywords: Nigeria; Lake Umuoseriche; Cichlidae
Subjects: Ecology
Fisheries
Item ID: 1266
Depositing User: Ms. Jean Collins
Date Deposited: 29 Jun 2008 16:41
Last Modified: 29 Sep 2011 20:53
URI: http://aquaticcommons.org/id/eprint/1266

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