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NameGrove, S.J., M.C. Little & P.J. Reay (1986). Tudor Creek Mombasa: the early life-history stages of fish and prawns 1985. Report of Overseas Development Administration Research Project R3888
Type Publication
NoteUnidentified species were not entered.
AbstractThe project was based at KMFRI headquarters in Mombasa, with Tudor Creek (a fully saline area of mangroves, mud and open water) as the study area. Sampling mainly involved the use of plankton nets and fine-meshed beach seines, in all months from February to November, 1985. Sampling frequencies of hours, days and weeks were also employed in order to cover the diel, circatidal, semilunar and lunar cycles. From the samples, prawn post-larvae, fish eggs and larvae, and juvenile fish and prawns were sorted, identified as far as possible, and counted in order to provide data on their occurrence, distribution and abundance. Records of temperature, and some other abiotic parameters, were also maintained. The fish and prawn fauna of Tudor Creek, is described from the results of the seine-net sampling and is found to include 6 species of panaeid prawn and 135 species (49 families) of teleost fish; additional families were recorded only as larval stages in the plankton. Many of the fish occurred as juveniles, but very few of these were species commercially exploited on nearby reefs and trawling grounds. Differences have been found between the creek mouth and inner creek in terms of both planktonic and juvenile stages, and are associated with a gradient of decreasing depth and dissolved oxygen concentration, and increasing temperature and turbidity from the mouth inwards. One of the most conspicuous trends has been the decrease in fish egg density and diversitty along this gradient, which suggests that while the creek can be regarded as a fish and prawn nursery area, it is not an important spawning ground, at least for pelagic spawners. The existence of the gradient also results in tide-related changes in egg-density which are probably best explained in relation to the tidal incursion of egg-rich coastal water into the creek rather than tidal spawning cycles of adult fish. The latter have not been discounted, however, and may emerge from further analysis of data from individual taxa. No clear indication of general systematic seasonal changes in either the planktonic or juvenile stages were found, but the lowest catch-rates of some species of juveniles occurred during the early part of the SE Monsoon (April - July). Again further analysis of data from individual taxa of both planktonic and juvenile stages, and of the size-frequency data collected, may reveal clearer evidence of seasonal periodicity. The results are discussed in relation to the literature available on similar ecosystems in other tropical area, and in relation to the major problems encountered in carryng out the work. It is concluded that much has still to be learned about the role of mangrove creeks as nursery area, and also that this role is important in the context of future fisheries management and environmental monitoring. With this application in mind, it is recommended that future work should concentrate on the post-settlement juvenile stages rather than on the planktonic stages, and an argument is presented to support this view.
Taxa
(11)
Checked: verified by a taxonomic editorAcreichthys tomentosus (Linnaeus, 1758) (basis of record)
Checked: verified by a taxonomic editorAmblyrhynchotes spinosissimus (Regan, 1908) accepted as Checked: verified by a taxonomic editorTylerius spinosissimus (Regan, 1908) (basis of record)
Checked: verified by a taxonomic editorDraculo maugei (Smith, 1966) (basis of record)
Checked: verified by a taxonomic editorPolynemus plebius Broussonet, 1782 accepted as Checked: verified by a taxonomic editorPolydactylus plebeius (Broussonet, 1782) (basis of record)
Checked: verified by a taxonomic editorSiganus spinus (Linnaeus, 1758) (basis of record)
Checked: verified by a taxonomic editorSparidentex hasta (Valenciennes, 1830) (basis of record)
Checked: verified by a taxonomic editorSphyraena genie Klunzinger, 1870 accepted as Checked: verified by a taxonomic editorSphyraena qenie Klunzinger, 1870 (basis of record)
Unreviewed: has not been verified by a taxonomic editorSpratellomorpha delicatulus (basis of record)
Checked: verified by a taxonomic editorStolephorus heterolobus (Rüppell, 1837) accepted as Checked: verified by a taxonomic editorEncrasicholina heteroloba (Rüppell, 1837) (basis of record)
Checked: verified by a taxonomic editorStolephorus waitei Jordan & Seale, 1926 (basis of record)
Checked: verified by a taxonomic editorSyngnathus cyanospilus Bleeker, 1854 accepted as Checked: verified by a taxonomic editorHippichthys cyanospilos (Bleeker, 1854) (basis of record)
Distributions
(108)
Kenya for Abudefduf saxatilis (Linnaeus, 1758)
Kenya for Abudefduf sexfasciatus (Lacepède, 1801)
Kenya for Acentrogobius cauerensis (Bleeker, 1853)
Kenya for Acreichthys tomentosus (Linnaeus, 1758)
Kenya for Aeoliscus punctulatus (Bianconi, 1854)
Kenya for Agrioposphyraena barracuda (Walbaum, 1792)
Kenya for Albula vulpes (Linnaeus, 1758)
Kenya for Alectis ciliaris (Bloch, 1787)
Kenya for Amblygobius albimaculatus (Rüppell, 1830)
Kenya for Amblyrhynchotes honckenii (Bloch, 1785)
Kenya for Amblyrhynchotes spinosissimus (Regan, 1908)
Kenya for Atherinomorus duodecimalis (Valenciennes, 1835)
Kenya for Atherinomorus lacunosus (Forster, 1801)
Kenya for Bothus myriaster (Temminck & Schlegel, 1846)
Kenya for Bothus pantherinus (Rüppell, 1830)
Kenya for Canthigaster valentini (Bleeker, 1853)
Kenya for Caranx ignobilis (Forsskål, 1775)
Kenya for Cheilio inermis (Forsskål, 1775)
Kenya for Cociella crocodila (Tilesius, 1814)
Kenya for Crenidens crenidens (Forsskål, 1775)
Kenya for Ctenogobius nebulosus (Forsskål, 1775)
Kenya for Cymolutes lecluse (Quoy & Gaimard, 1824)
Kenya for Cynoglossus bilineatus (Lacepède, 1802)
Kenya for Cynoglossus lachneri Menon, 1977
Kenya for Cynoglossus zanzibarensis Norman, 1939
Kenya for Dactyloptena orientalis (Cuvier, 1829)
Kenya for Diagramma pictum (Thunberg, 1792)
Kenya for Draculo maugei (Smith, 1966)
Kenya for Fistularia commersonii Rüppell, 1838
Kenya for Fistularia petimba Lacepède, 1803
Kenya for Gerres acinaces Bleeker, 1854
Kenya for Gerres filamentosus Cuvier, 1829
Kenya for Gerres oyena (Forsskål, 1775)
Kenya for Hemiramphus far (Forsskål, 1775)
Kenya for Herklotsichthys quadrimaculatus (Rüppell, 1837)
Kenya for Histrio histrio (Linnaeus, 1758)
Kenya for Kyphosus bigibbus Lacepède, 1801
Kenya for Lactoria cornuta (Linnaeus, 1758)
Kenya for Leiognathus berbis (Valenciennes, 1835)
Kenya for Leiognathus equulus (Forsskål, 1775)
Kenya for Leiognathus fasciatus (Lacepède, 1803)
Kenya for Leptoscarus vaigiensis (Quoy & Gaimard, 1824)
Kenya for Lethrinus harak (Forsskål, 1775)
Kenya for Lethrinus lentjan (Lacepède, 1802)
Kenya for Lethrinus variegatus Valenciennes, 1830
Kenya for Lobotes surinamensis (Bloch, 1790)
Kenya for Metapenaeus monoceros (Fabricius, 1798)
Kenya for Mugil cephalus Linnaeus, 1758
Kenya for Mulloidichthys flavolineatus (Lacepède, 1801)
Kenya for Novaculichthys macrolepidotus (Bloch, 1791)
Kenya for Ostracion cubicus Linnaeus, 1758
Kenya for Papilloculiceps longiceps (Cuvier, 1829)
Kenya for Paracitharus macrolepis (Gilchrist, 1904)
Kenya for Paraplagusia bilineata (Bloch, 1787)
Kenya for Parascorpaena mossambica (Peters, 1855)
Kenya for Parupeneus forsskali (Fourmanoir & Guézé, 1976)
Kenya for Parupeneus indicus (Shaw, 1803)
Kenya for Parupeneus macronema (Lacepède, 1801)
Kenya for Penaeus indicus H. Milne Edwards, 1837
Kenya for Penaeus latisulcatus Kishinouye, 1896
Kenya for Penaeus monodon Fabricius, 1798
Kenya for Penaeus semisulcatus De Haan, 1844 [in De Haan, 1833-1850]
Kenya for Platax pinnatus (Linnaeus, 1758)
Kenya for Platycephalus indicus (Linnaeus, 1758)
Kenya for Plotosus lineatus (Thunberg, 1787)
Kenya for Polynemus plebius Broussonet, 1782
Kenya for Polynemus sexfilis Valenciennes, 1831
Kenya for Pomacentrus tripunctatus Cuvier, 1830
Kenya for Pomadasys argenteus (Forsskål, 1775)
Kenya for Pomadasys commersonnii (Lacepède, 1801)
Kenya for Pseudorhombus elevatus Ogilby, 1912
Kenya for Pterois mombasae (Smith, 1957)
Kenya for Saurida gracilis (Quoy & Gaimard, 1824)
Kenya for Saurida nebulosa Valenciennes, 1850
Kenya for Scolopsis Cuvier, 1814
Kenya for Scomberoides lysan (Forsskål, 1775)
Kenya for Scomberoides tol (Cuvier, 1832)
Kenya for Siganus argenteus (Quoy & Gaimard, 1825)
Kenya for Siganus canaliculatus (Park, 1797)
Kenya for Siganus spinus (Linnaeus, 1758)
Kenya for Siganus sutor (Valenciennes, 1835)
Kenya for Sillago sihama (Forsskål, 1775)
Kenya for Sparidentex hasta (Valenciennes, 1830)
Kenya for Sphyraena barracuda (Walbaum, 1792)
Kenya for Sphyraena genie Klunzinger, 1870
Kenya for Sphyraena jello Cuvier, 1829
Kenya for Spratellomorpha bianalis (Bertin, 1940)
Kenya for Spratellomorpha delicatulus
Kenya for Stolephorus commersonii Lacepède, 1803
Kenya for Stolephorus heterolobus (Rüppell, 1837)
Kenya for Stolephorus indicus (van Hasselt, 1823)
Kenya for Stolephorus insularis Hardenberg, 1933
Kenya for Stolephorus waitei Jordan & Seale, 1926
Kenya for Syngnathoides biaculeatus (Bloch, 1785)
Kenya for Syngnathus cyanospilus Bleeker, 1854
Kenya for Syngnathus spicifer Rüppell, 1838
Kenya for Synodus variegatus (Lacepède, 1803)
Kenya for Terapon jarbua (Forsskål, 1775)
Kenya for Terapon puta Cuvier, 1829
Kenya for Terapon theraps Cuvier, 1829

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2013-01-12 18:30:12Z  created  db_admin
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