Pakistan Journal of Biological Sciences1028-88801812-5735Asian Network for Scientific Information10.3923/pjbs.2008.1252.1257Gerres oblongus (Cuvier, 1830) Dwelling from the Jaffna lagoon]]>AbyeramiB. SivashanthiniK. 92008119A total of 179 fishes of Gerres oblongus (Cuvier, 1830) ranging
in standard length 40 to 169 mm were collected in the morning from four
collection sites in the Jaffna lagoon. The stomach contents were assessed
qualitatively and quantitatively. The fishes were placed in 19 mm size
class intervals and the food analysis were done both by qualitatively
and quantitatively. Variation of food with respect to month was also determined.
The analysis of gut contents of G. oblongus showed that it is an
omnivore and the preference to animal diet is higher than the vegetable
matter. The presence of molluscs, soil particles and polychaetes indicated
that it is a substratum feeder or feed largely on attached surfaces. Feeding
intensity was high during February which has been reflected by the satiation
index (8.3) in the same period. At the same time coefficient of condition
has been fluctuated in between 2.2-3.7 except in May (4.4) indicated that
it has slow growth rate. The mean relative gut length showed a positive
increase with the body length. The value for the relationship between
the mean relative gut length to body length further confirms that it is
omnivorous in feeding habit.]]>Allen, K.R., 1938Salmo trutta) in Windermere.]]>7333349Allen, K.R.,1935Perca fluviatilis) in windermere.]]>4264273Allen, K.R.,1941Salmo salar) feeding habits.]]>104756Arnott, S.A. and L. Pihl,2000Gadus morhua: Effect of satiation level and prey handling time.]]>198225238Balik, I., H. Cubuk, B. Karasahin, R. Uysal and A. Alp,2006Sander lucioperca (Linnaeus, 1758). Population from lake Egirdir (Turkey).]]>301926Beckman, C.W.,194875237256Boraey, F.A. and F.M. Soliman, 1987Upeneus sulphureus Cuv. Val. in safaga bay of the red Sea.]]>194752Carpenter, K.E.,19401108196Chacko, P.I.,1949298397Cyrus, D.P. and S.J.M. Blaber,198322373393De Bruin, G.H.P., B.C. Russell and A. Bogusch,1994Pages: 356Pages: 356De Melo, C.E., F. de, A. Machado and V. Pinto-Silva,200423744De Silva, S.K., S. Kortmulder and M.J.S. Wijeyaratne,1977Puntius bimaculatus and P. Titteya (Pisces, Cyprinidae).]]>27253263Facade, S.O. and C.I.O. Olaniyan,19735205225Frost, W.E.,1939Salmo trutta Linn.) in acid and alkaline waters.]]>45139206Frost, W.E. and A.E.J. Went,194046B5380Frost, W.E.,1946Anguilla anguilla) from the windermere catchment area.]]>154353Hartley, P.H.T.,1940pp: 3-33pp: 3-33Hartley, P.H.T.,1947117129206Hartley, P.H.T.,194817114Hynes, H.B.N.,1950Gasterosteus aculeatus and Pygosteus pungitius), with a review of methods used in studies of the food of fishes.]]>193658Hyslop, E.J.,198017411429Ikusemiju, K. and C.I.O. Olaniyan,1977Chrysichthys walkeri (Gunther), Chrysichthys filamentosus (Boulenger) and Chrysichthys nigrodigitatus (Lacepede) in theLekki Lagoon, Nigeria.]]>10105112Jensen, A.J.,1980Salvelinus alpinus (L.) and brown trout, Salmo trutta L.]]>17741747Lal Mohan, R.S.,1985Pennahia macrophthalmus (Bleeker).]]>276871Mariano-Jelicich, R., M. Favero and M.P. Silva,2003Rynchops niger at mar chiquita, buenos aires province, Argentina.]]>31199202Neill, R.M.,1938Salmo trutta L.) in relation to the organic environment.]]>59481520Oso, J.A., I.A. Ayodela and O. Fagbuaro,2006Orechromis niliticus (L.) and Sarotheroden galilaeus (L.) in a tropical reservoir.]]>1118121Radforth, I.,1940Thymallus thymallus), flounder (Platichthys flesus), roach (Rutilus rutilus) and gudgeon (Gobio fluviatilis), with special reference to the tweed watershed.]]>9302318Sivashanthini, K. and B. Abeyrami,2003Gerres oblongus (Pisces:Perciformes) from the Jaffna lagoon, Sri Lanka.]]>32252254Somasekaram, T.,1997Spataru, P.,1978Tilapia zilli (Gervais) (Cichlidae) in Lake Kinneret (Israel).]]>14327338Wahbeh, M.I. and A. Ajiad, 1985Parupeneus barberinus (lacepede), from Aqaba, Jordan.]]>27147154