Stock assessment of Lates niloticus (L.), Oreochromis niloticus (L.) and Rastrineobola argentea (Pellegrin) using fishery dependent data from the Tanzanian waters of Lake Victoria

Nsinda, P.E. and Mrosso, H.D. (1999) Stock assessment of Lates niloticus (L.), Oreochromis niloticus (L.) and Rastrineobola argentea (Pellegrin) using fishery dependent data from the Tanzanian waters of Lake Victoria. In: Tweddle, D. and Cowx, I.G. (eds.) Report on third Fisheries Data Working Group (FIDAWOG) workshop held at the Triangle Hotel, Jinja, 29 March to 1 April 1999. Jinja, Fisheries Data Working Group of the Lake Victoria Fisheries Research Project, pp. 79-83. (LVFRP Technical Document,6)

This is the latest version of this item.

[img]
Preview
PDF (The document's language is English .) - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader
Download (148Kb) | Preview

Abstract

Catch data were collected from three beaches in the Mwanza area of lake Victoria, Tanzania for Oreochromis niloticus (L.), Rastrineobola argentea (Pellegrin) and Lates niloticus (L.). Sampling took place in October 1997 and February, June and September 1998. The CPUE for O. niloticus was 3.9 to 6kg boat super(-1) and for R. argentea from 98 to 282 kg boat super(-1). There was no obvious trend in catch rates for L. niloticus. The modal length for O. niloticus recorded at Chole beach was 34cm TL. In February, fish were larger (41-45 cm) than in the other surveys. Rastrineobola argentea caught in October 1997 had modal length at 65 mm TL with some smaller fish. In February and June prominent length modes occurred at 45 and 58 mm respectively, which may represent the same cohort as the small fish caught in October 1997. In September 1998, there were two length modes at 46 and 60 mm. The 60 mm fish may represent the same cohort seen in previous surveys, suggesting growth from approximately 30 mm to 60 mm in an eleven-month period. Lates niloticus landed at Kayenze beach over the four surveys had a modal length of 46 cm TL. Fish species encountered on the three beaches during the surveys were O. niloticus, R. argentea, Bagrus docmak Forsskall, Clarias gariepinus (Burchell), Protopterus aethiopicus Heckel, Labeo victorians Boulenger, Synodontis afrofischeri Hilgendorf, Synodontis victoriae Boulanger, Schilbe intermedius (L.), Brycinus jacksonii (Boulanger), Mormyrus kannume Forsskall and Haplochromine cichlids

Item Type: Book Section
Title: Stock assessment of Lates niloticus (L.), Oreochromis niloticus (L.) and Rastrineobola argentea (Pellegrin) using fishery dependent data from the Tanzanian waters of Lake Victoria
Personal Creator/Author:
CreatorsEmail
Nsinda, P.E.
Mrosso, H.D.
Title of Book: Report on third Fisheries Data Working Group (FIDAWOG) workshop held at the Triangle Hotel, Jinja, 29 March to 1 April 1999
Editors:
EditorsEmail
Tweddle, D.
Cowx, I.G.
Series Name: LVFRP Technical Document
Number: 6
Page Range: pp. 79-83
Date: 1999
Publisher: Fisheries Data Working Group of the Lake Victoria Fisheries Research Project
Place of Publication: Jinja
Projects: Lake Victoria Fisheries Research Project Phase II
Institution: Lake Victoria Fisheries Research Project Phase II
Issuing Agency: Lake Victoria Fisheries Organization
Additional Information: LVFRP/TECH/99/06
Uncontrolled Keywords: Tanzania, Lake Victoria; catch/effort; fishery data; fishery surveys; lake fisheries; stock assessment; Bagrus docmac; Brycinus jacksonii; Clarias gariepinus; Labeo victorianus; Lates niloticus; Mormyrus kannume; Oreochromis niloticus; Protopterus aethiopicus; Rastrineobola argentea; Schilbe intermedius; Synodontis victoriae
Subjects: Fisheries
Biology
Item ID: 3748
Depositing User: Ms Maria Kalentsits
Date Deposited: 14 Jul 2010 06:57
Last Modified: 29 Sep 2011 16:57
Related URLs:
URI: http://aquaticcommons.org/id/eprint/3748

Available Versions of this Item

  • Stock assessment of Lates niloticus (L.), Oreochromis niloticus (L.) and Rastrineobola argentea (Pellegrin) using fishery dependent data from the Tanzanian waters of Lake Victoria. (deposited 14 Jul 2010 06:57) [Currently Displayed]

Actions (login required)

View Item View Item

Document Downloads

More statistics for this item...