Zobrazeno 1 - 10
of 16
pro vyhledávání: '"M. J Ntiba"'
Publikováno v:
Western Indian Ocean Journal of Marine Science; Vol. 20 No. 1 (2021); 95-109
Yellowfin tuna, Thunnus albacares (Bonnaterre, 1788) is a highly migratory and important commercial fishery species. Data on length-frequency, growth parameters and mortality rates of yellowfin tuna in the coastal waters of Kenya is limited. We asses
Autor:
M. J Ntiba, Julien Cucherousset, S. M. Kisia, Dalmas O. Oyugi, J. Robert Britton, David M. Harper
Publikováno v:
Fisheries Research. 110:92-97
Marginal increment ratio analysis of scales collected from the exploited common carp Cyprinus carpio (Linnaeus, 1758) population of Lake Naivasha between June 2008 and November 2009 revealed they were valid for ageing purposes, with an annual growth
Publikováno v:
Aquatic Ecosystem Health & Management. 13:214-221
The objective of the study was to investigate some aspects of the breeding patterns of the cyprinid Barbus amphigramma in Lake Naivasha. The study was carried out from February to October, 2003. Fishing was done with the use of gillnets of mesh size
Publikováno v:
African Journal of Ecology. 47:32-39
Macrophytes have been shown to perform important ecological roles in Lake Naivasha. Consequently, various studies regarding the impact of biotic factors on the macrophytes have been advanced but related studies on environmental parameters have lagged
Publikováno v:
Aquatic Ecosystem Health & Management. 10:443-448
Studies were conducted on reproductive characteristics of Oreochromis niloticus from 1998 to 2000. The results were combined with published work on growth parameters of O. niloticus from 1985 to 1999 in order to establish the current survival strateg
Publikováno v:
African Journal of Ecology. 44:30-37
The life history characteristics of introduced Nile tilapia (Oreochromis niloticus L.) in Lake Victoria, including, sex ratio, fecundity, reproduction, weight-length relationship and body condition were studied and compared with those of other popula
Autor:
Kassim Kulindwa, M. J Ntiba, Kelly West, Jerome Karimumuryango, Shem O. Wandiga, Fred Bugenyi, Peninah Aloo-Obudho, Eric O. Odada, Daniel Olago, Pius Achola
Publikováno v:
Aquatic Sciences - Research Across Boundaries. 65:254-271
An assessment of the East African Rift Valley lakes was initiated by the United Nations Environment Programme (UNEP) with funding from Global Environ- ment Facility as part of the Global International Waters Assessment (GIWA). The purpose of GIWA was
Publikováno v:
Aquatic Ecosystem Health & Management. 5:245-254
The fisheries of Lake Victoria have always been dynamic and the relevant authorities have continually tried to manage them. During the second half of the last century, numerous changes took place and fisheries managers had to cope with influences oth
Publikováno v:
Lakes & Reservoirs: Science, Policy and Management for Sustainable Use. 6:211-216
Lake Victoria is the largest lake in Africa (68 800 km2) and is the eighth largest lake in the world by volume. The three East African countries of Tanzania, Uganda and Kenya share Lake Victoria and its resources. The total annual catch of fish from
Autor:
B. Kaunda-Arara, M. J. Ntiba
Publikováno v:
Hydrobiologia. 353:153-160
The testicular and ovarian maturation cycle of thedory snapper, Lutjanus fulviflamma(Forsskal) (Osteichthyes:Lutjanidae), acommercially valuable species in the western IndianOcean, is described macroscopically. The ovary wasalso studied microscopical