Edited by: Prof. US Amarasinghe

ISSN 1391 – 2038

Indexed in FAO Aquatic Sciences; Fisheries Abstracts (ASFA) and Thomson and Reuters Journals Published for The Sri Lankan Association for Fisheries and Aquatic Resources (SLAFAR).

 

Latest Article

Are fancy guppies (Poeciliareticulata Peters, 1859) invasive?

Authors: C. H. Bandaranayake, W. U. Chandrasekara 

Abstract

Guppies (Poecilia reticulata Peters 1859) have been introduced to Sri Lanka in the early 1970s to combat the menace of Malaria. Due to their rapid range expansion in natural waterways, guppies are labeled as an ‘invasive species.’ Guppies are also popular in the ornamental fish trade where a wide variety of ornamental guppy varieties with attractive colour and fin patterns have been produced through selective breeding; they are commonly known as ‘fancy guppies’ or ‘saree guppies’. Since there are some concerns over the invasiveness of these fancy guppies into natural water bodies in Sri Lanka, the potential invasiveness of two common fancy guppy varieties with long caudal fins viz.black guppies and yellow guppies, was assessed under laboratory conditions using their specific growth rates (SGR) and critical swimming speeds (Ucrit). Results in the present study showed that the SGR of black guppies (1.0 % g day-1), and yellow guppies (0.99 % g day-1) were significantly lower (p < 0.05) than that of the wild guppies (1.31% g day-1). Further, the Ucrit of the black guppies (23.8 cm s-1), and yellow guppies (26.8 cm s-1) were significantly lower (p < 0.05) than that of the wild guppies (28.8 cm s-1). Since the long caudal fins significantly reduced  the swimming speed (p < 0.05: ANOVA) and hence the SGR of the two fancy guppy varieties, there is strong evidence for an inter-variety competition to occur among the wild and fancy guppies where the latter would be competitively eliminated by the wild guppies in terms of competition owing to their short tail. Therefore, the long caudal fin is a predicament to fancy guppies for both swimming and securing food in the water column. This study also challenges some views of all guppies being categorized as ‘invasive’ and demonstrated that the fancy guppies are unable to compete with their wild counterparts but are confined to ornamental displays in places such as indoor and outdoor fish tanks.

Keywords: Invasive fish,  SGR,  Ucrit,  Exotic species,  Ornamental fish 
How to Cite: Bandaranayake, C.H. & Chandrasekara, W.U., (2017). Are fancy guppies (Poeciliareticulata Peters, 1859) invasive?. Sri Lanka Journal of Aquatic Sciences. 22(2), pp.117–128. DOI: http://doi.org/10.4038/sljas.v22i2.7536

 

Recent Volume

 

Water quality of Nilwala River, Sri Lanka in relation to land use practices

 P.P.M. Heenatigala1*, M.U.L. Fernando

 Abstract   Full Text [PDF]  [382.38 Kb]

 

Effects of dried, powdered carrot (Daucus carota) incorporated diet on the skin and flesh colouration of Catla catla

W. SANJAYA WEERAKKODY* and P. RUCHIRA T. CUMARANATUNGA

 Abstract   Full Text [PDF]  [382.38 Kb]

 

Toxicity of aqueous extract of white hoary pea, Tephrosia candida (Papilionoideae) on Nile tilapia, Oreochromis niloticus (Cichlidae) fingerlings

C.R.W.C. MOHOTTI and U.P.K. EPA*

 Abstract   Full Text [PDF]  [382.38 Kb]

 

Impaired growth and erythrocyte nuclear lesions of immature Oreochromis niloticus exposed to waterborne crude oil: Persistent responses

S.H.N.P. Gunawickrama, P.D.S.M. Panawala, K.B.S. Gunawickrama*

 Abstract   Full Text [PDF]  [382.38 Kb]

 

Capturing local knowledge of beach seine fishers in the north-western province of Sri Lanka

NUWAN D.P. GUNAWARDENA and UPALI S. AMARASINGHE*

 Abstract   Full Text [PDF]  [382.38 Kb]

 

Shedding of gill epithelia by grey mullets (Family Mugilidae) in Negombo Estuary, Sri Lanka

Paul Rink, Christina Semasinghe, Herath Manthrithilake*

 Abstract   Full Text [PDF]  [382.38 Kb]

 

Community based fish nurseries at Kirawana and Rajawewa in the Ampara district, Sri Lanka: A success story

W.A.J. Rohitha Fernando, K.B. Chandrani Pushpalatha* and Jayantha Chandrasoma

 Abstract   Full Text [PDF]  [382.38 Kb]

  

All Articles

2016 - Vol 21 issue 2

Water quality of Nilwala River, Sri Lanka in relation to land use practices

 P.P.M. Heenatigala1*, M.U.L. Fernando

 Abstract   Full Text [PDF]  [382.38 Kb]

 

Effects of dried, powdered carrot (Daucus carota) incorporated diet on the skin and flesh colouration of Catla catla

W. SANJAYA WEERAKKODY* and P. RUCHIRA T. CUMARANATUNGA

 Abstract   Full Text [PDF]  [382.38 Kb]

 

Toxicity of aqueous extract of white hoary pea, Tephrosia candida (Papilionoideae) on Nile tilapia, Oreochromis niloticus (Cichlidae) fingerlings

C.R.W.C. MOHOTTI and U.P.K. EPA*

 Abstract   Full Text [PDF]  [382.38 Kb]

 

Impaired growth and erythrocyte nuclear lesions of immature Oreochromis niloticus exposed to waterborne crude oil: Persistent responses

S.H.N.P. Gunawickrama, P.D.S.M. Panawala, K.B.S. Gunawickrama*

 Abstract   Full Text [PDF]  [382.38 Kb]

 

Capturing local knowledge of beach seine fishers in the north-western province of Sri Lanka

NUWAN D.P. GUNAWARDENA and UPALI S. AMARASINGHE*

 Abstract   Full Text [PDF]  [382.38 Kb]

 

Shedding of gill epithelia by grey mullets (Family Mugilidae) in Negombo Estuary, Sri Lanka

Paul Rink, Christina Semasinghe, Herath Manthrithilake*

 Abstract   Full Text [PDF]  [382.38 Kb]

 

Community based fish nurseries at Kirawana and Rajawewa in the Ampara district, Sri Lanka: A success story

W.A.J. Rohitha Fernando, K.B. Chandrani Pushpalatha* and Jayantha Chandrasoma

 Abstract   Full Text [PDF]  [382.38 Kb]

2016 - Vol 21 Issue 1

Occurrence of bacteria species responsible for vibriosis in shrimp pond culture systems in Sri Lanka and assessment of the suitable control measures.

 P.P.M. Heenatigala1*, M.U.L. Fernando

 Abstract   Full Text [PDF]  [382.38 Kb]

 

Introduction of a bowser for the transportation of fish seed in Sri Lanka: Impacts and economics.

Jayantha Chandrasoma†, and K.B. Chandrani Pushpalatha*

 Abstract   Full Text [PDF]  [382.38 Kb]

 

Farming of Nile tilapia (Oreochromis niloticus) in backyard ponds in Sri Lanka: Culture practices, fish production and profitability.

K.B.C. Pushpalatha*, J. Chandrasoma†, H.S.W.A. Liyanage, W.A.J.R. Fernando, J.M. Jayabahu

 Abstract   Full Text [PDF]  [382.38 Kb]

 

Toxic effects of Trebon®, a synthetic pyrethroid based insecticide formulation, on Oreochromis mossambicus (Family: Cichlidae).

W.U. Chandrasekara*, K.S.D. Premarathna

 Abstract   Full Text [PDF]  [382.38 Kb]

 

Size-dependent dietary shifts in Chitala ornata (Osteichthyes; Notopteridae), an accidentally introduced exotic species in Sri Lanka.

R.R.A. Ramani Shirantha

 Abstract   Full Text [PDF]  [382.38 Kb]

 

The potential benefits of rainwater harvesting for households in the Jaffna Peninsula.

Paul Rink, Christina Semasinghe, Herath Manthrithilake*

 Abstract   Full Text [PDF]  [382.38 Kb]

 

Cryptocoryne wendtii can successfully be grown in river sand enriched with nutrients.

B.V.A.S.M. Bambaranda1*, S.E. Peiris

 Abstract   Full Text [PDF]  [382.38 Kb]

 

Herklotsichthys quadrimaculatus Korumburuwa in the stilt fishery in Southern Sri Lanka: Are they really poisonous?.

K.H.M. Ashoka Deepananda, Upali S. Amarasinghe, Udith K. Jayasinghe-Mudalige

 Abstract   Full Text [PDF]  [382.38 Kb]

 

 

2015 - Vol 20 Issue 2

Impact of introduction of culture-based fisheries on fish production and socio-economic conditions of fishers in Ampara wewa, a medium perennial reservoir.

 K.B. Chandrani Pushpalatha*,  Jayantha Chandrasoma, W.M.J. Rohitha Fernando

 Abstract   Full Text [PDF]  [382.38 Kb]

 

Co–management of the fishery of Senanayake Samudra, a large perennial reservoir in Sri Lanka

W.M.J. Rohitha Fernando*,Jayantha Chandrasoma, K.B. Chandrani Pushpalatha , Mahinda Kulathilaka

 Abstract   Full Text [PDF]  [286 Kb]

Diurnal variation in the feeding patterns and food preferences of Dwarf panchax (Aplocheilus parvus)

G.K.A.W Fernando*, S. Jayakody, W.M.H.K. Wijenayake, G.N.L. Galappaththy,  M. Yatawara,  R.D.J. Harishchandra, W.M.T.B. Wanninayake,  S.L. Deniyage

 Abstract   Full Text [PDF]  [286 Kb]

Assessment of water pollution status in Uma Oya, Sri Lanka.

K.A.W.S. Weerasekara*, A.A.D. Amarathunga, R.R.A.R. Shirantha, N. Sureshkumar, W.D.N. Wickramaarachchi, S.A.M. Azmy

 Abstract   Full Text [PDF]  [286 Kb]

Fish offal based aqua-feed for rearing post-larvae of freshwater prawn, Macrobrachium rosenbergii.

M.H.S. Ariyaratne ,  Ruchira Amaraweera

 Abstract   Full Text [PDF]  [286 Kb]

Growth, survival and immune responses of juvenile common carp Cyprinus carpio fed with diets enriched with α- tocopheryl acetate.

M.G.I.S. Parakrama , P.P.M. Heenatigala

 Abstract   Full Text [PDF]  [286 Kb]                                                

Community structure of zooplankton and trophic status of some inland reservoirs in the low country intermediate zone of Sri Lanka.

S.M.A.I. Sangakkara,  M.J.S. Wijeyaratne  

Abstract   Full Text [PDF]  [286 Kb]

2015 - Vol 20 Issue 1

Spatial differences in the growth rates of Pocillopora damicornis associated with sedimentation rate and light intensity at Polhena patchy reef, southern Sri Lanka 

W.A.A. Upasantha Kumara ,  P.B.T. Pradeep Kumara, P.R.T. Cumaranatunga Abstract  Full Text [PDF]  

Diversity and distribution of cetaceans off Mirissa in the southern coast of Sri Lanka II. Relationship with sea surface temperature, salinity and water density 

E.P.D.N. Thilakarathne , P.B.T. Pradeep Kumara, R.M.G.N. Thilakarathna

 Abstract  Full Text [PDF]  

Diversity and distribution of cetaceans off Mirissa in the southern coast of Sri Lanka I: Relationship with depth 

E.P.D.N. Thilakarathne , P.B.T Pradeep Kumara, R.M.G.N. Thilakarathna

 Abstract  Full Text [PDF]  

Present status of small-scale exploitation of mangroves in Rekawa Lagoon, Sri Lanka 

V.T.K. Dayarathne , M.P. Kumara 

 Abstract  Full Text [PDF]  

Effect of glyphosate-based herbicide, Roundup™ on territory deference of male Oreochromis mossambicus (Osteichthyes, Cichlidae) associated with mating behaviour 

K.V Sandun , N. Bandara, Upali Amarasinghe
 Abstract  Full Text [PDF]  

2014 - Vol 19

Mapping of selected coral reefs in Southern, Sri Lanka using remote sensing methods

T.W.S. Warnasuriya ,  P.B.T. Pradeep Kumara,  N. Alahacoon
 Abstract  Full Text [PDF]  [871.13 Kb]

Food and feeding of Ehirava fluviatilis (Osteichthyes, Clupeidae) in Rajanganaya Reservoir, Sri Lanka

Upali Amarasinghe, Indivari Mihindukulasooriya,
 Abstract 
 Full Text [PDF]  [602.08 Kb]


The benthic macro-invertebrate diversity in relation to water quality of a stream habitat at Dediyagala, Sri Lanka

H.M.T.C. Madhushankha, H.B. Asanthi, R.A. Maithreepala
 Abstract  Full Text [PDF]  [609.51 Kb]


Environmental flow in Sri Lanka: ancient anicuts versus modern dams

 E.I.L. Silva, Herath Manthrithilake, Dammika Pitigala

 Abstract  Full Text [PDF]  [789.94 Kb]

 Appreciation - K.S.B. Tennakoon

Author: Hettiarachch 

2013 - Vol 18


Population dynamics of accidentally introduced Amazon sailfin catfish, Pterygoplichthys ardalis (Siluriformes, Loricariidae) in Pologolla reservoir, Sri Lanka

H.P. WATHSALA SUMANASINGHE and UPALI S. AMARASINGHE
 Abstract  Full Text [PDF]  [871.13 Kb]


Analysis of proximate composition and consumer preference of three reef fish species

D.M.A. EDIRISINGHE, P.R.T. CUMARANATUNGA, K.RADAMPOLA and P.T. KIRINDEARACHCHIGE
 Abstract 
 Full Text [PDF]  [602.08 Kb]


Growth and survival of post-larvae of giant freshwater prawn (Macrobrachium rosenbergii) reared using feeds formulated with different sources of protein

K.W.R.R. AMARAWEERA, M.J.S.WIJEYARATNE and S.C. JAYAMANNE
 Abstract  Full Text [PDF]  [609.51 Kb]


Fisheries resources in alleviation of hunger and malnutrition in Sri Lanka - accomplishment and challenges

UPALI S. AMARASINGHE
 Abstract  Full Text [PDF]  [789.94 Kb]

2012 - Vol 17


Economic viability of Asian sea bass (Lates calcarifer) and Tilapia (Oreochromis niloticus) small scale aquaculture systems in Sri Lanka

M. GAMMANPILA and M.S. SINGAPPULI
 Abstract  Full Text [PDF]  [638.65 Kb]


Diversity and density of sea urchins populations in rocky shores off Nilwella in Southern province of Sri Lanka

M.A. GAYASHAN and S. JAYAKODY
 Abstract  Full Text [PDF]  [640.99 Kb]


Effect of copper in protein, carbohydrate and lipid contents of the juvenile lobster, panulirus homarus homarus (linnaeus, 1758)

A.MAHARAJAN, S. RAJALAKSHMI and M. VIJAYAKUMARAN
 Abstract  Full Text [PDF]  [820.52 Kb]


Haemato-Immunological and Histological Responses in Nile Tilapia, Oreochromis niloticus Exposed to Titanium Dioxide Nanoparticles

S.A.D.S. PERERA and ASOKA PATHIRATNE
 Abstract  Full Text [PDF]  [1337.6 Kb]

2011 - Vol 16


The Spatial Variation of Macrobenthic Community in the Negombo Estuary in Relation to Physico-chemical Parameters

W.U. CHANDRASEKERA and A.I. HETTIARACHCHI
 Abstract  Full Text [PDF]  [1039.61 Kb]


Analysis of Bile Fluorescence Profiles of Feral Nile tilapia as Biomarkers of Exposure to Polycyclic Aromatic Hydrocarbons: Associations with the Rainfall

Chamini K. Hemachandra and Asoka Pathiratne
 Abstract  Full Text [PDF]  [720.55 Kb]


Hook Selectivity of Giant Trevally (Caranx ignobilis) and Nakedbreast Trevally (Carangoides gymnostethus) (Carangidae) caught in the hook-and-line fishery off Negombo, Sri Lanka

U.S. Amarasinghe, I.U. Wickramaratne and M.J.S. Wijeyaratne
 Abstract  Full Text [PDF]  [447.25 Kb]


Morphological differentiation of two cichlid species in Sri Lanka using truss networks

G.K.A.W. FERNANDO and U.S. AMARASINGHE
 Abstract   Full Text [PDF]  [321.26 Kb]

2010 - Vol 15


Mercury, Cadmium and Lead Levels in Three Commercially Important Marine Fish Species of in Sri Lanka

B.K.K.K. JINADASA1*, L.R.S. RAMEESHA, E.M.R.K.B. EDIRISINGHE AND R.M.U.S.K. RATHNAYAKE
 Abstract  Full Text [PDF]  [51.97 Kb]


Influence of turbidity regime on larval settlement patterns of stony coral Pocillopora damicornis in Polhena reef, Sri Lanka

P.B. TERNEY PRADEEP KUMARA
 Abstract   Full Text [PDF]  [219.65 Kb]


Assessing the Household Food Security of Marine Fisheries Sector in Sri Lanka: Case of Muslim Fishing Community in the Beruwala Divisional Secretariat

M.M.F. MUKARRAMA, J.M.M. UDUGAMA, U.K. JAYASINGHEMUDALIGAE , S.M.M. IKRAM AND S.N. DISSANAYAKE
 Abstract  Full Text [PDF]  [181.98 Kb]


Vegetative propagation of some selected mangrove species from Negombo estuary, Sri Lanka

K.H.W.L. DE SILVA* AND M.D.AMARASINGHE
 Abstract  Full Text [PDF]  [1989.19 Kb]


Hydrography, nutrients and abundance and distribution of zooplankton in Negombo Lagoon, Sri Lanka.

M. GAMMANPILA
 Abstract  Full Text [PDF]  [221.82 Kb]


Multiple biomarker responses of Nile tilapia (Oreochromis niloticus) exposed to textile industry effluents reaching Bolgoda North Lake, Sri Lanka

B.I.G. PERERA AND A. PATHIRATNE
 Abstract  Full Text [PDF]  [217.72 Kb]

2009 - Vol 14


Accidental introduction of alien plankton into the Sri Lankan coastal zone through ballast water of cargo ships

W. U. CHANDRASEKERA AND M. A. S. T. FERNANDO
 Abstract  Full Text [PDF]  [245.07 Kb]


Lipid composition and fatty acid profiles of wild caught and fattened mud crab, Scylla serrata, in Sri Lanka

M.U.M. ANAS, E.M.R.K.B. EDIRISINGHE AND J.M.P.K. JAYASINGHE
 Abstract  Full Text [PDF]  [193.33 Kb]


Feeding vitamins, antioxidants and cod liver oil enriched formulated feed influences the growth, survival and fatty acid composition of Macrobrachium

M.G.I.S. PARAKARMA, K.D. RAWAT, G. VENKATESHWARLU AND A.K. REDDY
 Abstract  Full Text [PDF]  [169.82 Kb]

Impact of women involvement in fisheries on socio-economics of fisher households in Negombo, Sri Lanka

D.M.P.R. DISSANAYAKA AND M.J.S. WIJEYARATNE
 Abstract   Full Text [PDF]  [168 Kb]


Distribution and population dynamics of the edible bivalve species Meretrix casta (Chemnitz) in the Dutch canal of Sri Lanka

E.M. JAYAWICKREMA AND M.J.S. WIJEYARATNE
 Abstract  Full Text [PDF]  [589.55 Kb]


Gillnet selectivity of three flying fish, Cheilopogon nigricans (Bennett, 1846), Cypselurus poecilopterus (Valenciennes, 1846) and Cheilopogon suttoni

M.D.S.T. DE CROOS
 Abstract  Full Text [PDF]  [303.24 Kb]


Status of the fishery of flying fish off northwestern coast of Sri Lanka and the effect of lunar pattern on catchability

M.D.S.T. DE CROOS
 Abstract  Full Text [PDF]  [275.21 Kb]

 

2008 - Vol 13


Fishery and feeding habits of yellowfin tuna (Thunnus albacares) targeted by coastal tuna longlining in the north western and north eastern coasts of

D.C.T. DISSANAYAKE*, E.K.V. SAMARAWEERA AND C. AMARASIRI
 Abstract   Full Text [PDF]  [269.37 Kb]


Population dynamics of Hyporhamphus limbatus (Beloniformes, Hemiramphidae) in two lowland reservoirs of Sri Lanka

P.A.D. AJITH KUMARA1 AND U.S. AMARASINGHE
 Abstract   Full Text [PDF]  [304.83 Kb]


Exploitation of small indigenous fish species using shore seines in three reservoirs of Sri Lanka

P.A.D. AJITH KUMARA AND U.S. AMARASINGHE
 Abstract  Full Text [PDF]  [209.73 Kb]


Evaluation of potential use of feeder guppies as a source of highly unsaturated fatty acids for high value fishes

H.M.P. KITHSIRI* AND G. VENKATESHWARLU
 Abstract  Full Text [PDF]  [141.61 Kb]


Heavy metal levels in two food fish species from Negombo estuary, Sri Lanka: Relationships with the body size

H.A.P. INDRAJITH, K.A.S. PATHIRATNE* AND A. PATHIRATNE
 Abstract  Full Text [PDF]  [240.7 Kb]


Behaviour of environmental iron, manganese and aluminium in relation to brown/black gill syndrome in Penaeus monodon cultured in ponds on acid sulphat

J.M.P.K. JAYASINGHE*, M.J. PHILLIPS AND M.U.M. ANAS
 Abstract  Full Text [PDF]  [302.61 Kb]


Vegetation structure and potential gross primary productivity of mangroves at Kadolkele in Meegamuwa (Negombo) estuary, Sri Lank

J.M.A.L. JAYAKODY, M.D. AMARASINGHE*, V. PAHALAWATTAARACHCHI AND K.H.W.L. DE SILVA
 Abstract  Full Text [PDF]  [197.64 Kb]


Diversity of mangrove crabs in Kadolkele, Negombo eatuary, Sri Lanka

S.H.R. PRIYADARSHANI, S.C. JAYAMANNE* AND Y.N. HIRIMUTHUGODA
 Abstract  Full Text [PDF]  [254.67 Kb]

2007 - Vol 12


Hypertrophic-eutrophic alteration in Kandy Lake, following an outbreak of a Microcystis bloom

E. I. L. SILVA
 Abstract  Full Text [PDF]  [153.08 Kb]


Substrate characteristics and species diversity of marine angiosperms in a micro-tidal basin estuary on the west coast of Sri Lanka

K. H. W. L. DE SILVA AND M. D. AMARASINGHE
 Abstract  Full Text [PDF]  [198.46 Kb]


Sustainable use of Cryptocoryne wendtii and Echinodorus cordifolius in the aquaculture industry of Sri Lanka by micropropagation

C. DISSANAYAKE, M. HETTIARACHCHI AND M. C. M. IQBAL
 Abstract  Full Text [PDF]  [168.39 Kb]


Histopathological changes induced by ergasilid copepod infections on the gills of food fish from Batticaloa lagoon, Sri Lanka

P. VINOBABA
 Abstract  Full Text [PDF]  [260.79 Kb]


Accumulation of heavy metals in a food fish, Mystus gulio inhabiting Bolgoda Lake, Sri Lanka

P. SENARATHNE AND K. A. S. PATHIRATNE
 Abstract  Full Text [PDF]  [159.8 Kb]


Evaluation of the effects of dietary vitamin C, E and Zinc supplementation on reproductive performance of Nile tilapia (Oreochromis niloticus)

M. GAMMANPILA*, A. YAKUPITIYAGE AND A. N. BART
 Abstract  Full Text [PDF]  [227.84 Kb]


Studies on the sea cucumber fishery in the North Western coastal region of Sri Lanka.

D. C. T. DISSANAYAKE* AND M. J. S. WIJEYARATNE
 Abstract  Full Text [PDF]  [239.12 Kb]


Performance of GIFT strain of Oreochromis niloticus in culture-based fisheries in non-perennial reservoirs, Sri Lanka.

W.M.H.K. WIJENAYAKE, U.S. AMARASINGHE* AND S.S DE SILVA
 Abstract  Full Text [PDF]  [244.71 Kb]

2006 - Vol 11

Influence of different processing methods on quality and shelf life of dried shrimp.

P.S. JAYASINGHE*, J.M.P.K. JAYASINGHE AND C.P. GALAPPATHTHI
 Abstract   Full Text [PDF]  [118.38 Kb]


A preliminary study on the presence of biofilms on food contact surfaces in selected Sri Lankan fish & shrimp processing factories: setbacks in cu

M.G.I.U. KARIYAWASAM*, AND S.P. JAYASOORIYA
 Abstract  Full Text [PDF]  [107.89 Kb]


Effect of dietary fishmeal replacement in the formulated food by heat processed soybean meal on growth, survival and crude protein level of fingerling

M.D.M.D.W.M.M.K.YATAWARA* AND M. HETTIARACHCHI
 Abstract  Full Text [PDF]  [124.61 Kb]


Diversity of macrobenthic community in the Negombo estuary, Sri Lanka with special reference to environmental conditions.

D.D.G.L. DAHANAYAKA* AND M.J.S. WIJEYARATNE
 Abstract   Full Text [PDF]  [194.29 Kb]


Selective control of marine algal species by electrolysis treatment.

SAMAN WIJESEKARA. R.G, NAKAO NOMURA AND MASATOSHI MATSUMURA
 Abstract  Full Text [PDF]  [208.18 Kb]


Price efficiency in tuna fish marketing in Sri Lanka - An application of cointegration approach.

Y.Y.K. DE SILVA, P.S.K. RAJAPAKSHE AND K.H.M.L. AMARALAL
 Abstract  Full Text [PDF]  [102.5 Kb]


Population dynamics of Gerres abbreviatus Bleeker, 1850 from the Parangipettai waters, Southeast coast of India.

S. KUGANATHAN
 Abstract  Full Text [PDF]  [248.21 Kb]

2005 - Vol 10


Two species of angelfish (Pomacanthidae) new to Sri Lanka

ARJAN RAJASURIYA AND NISHAN PERERA
 Abstract   Full Text [PDF]  [306.06 Kb]


Preliminary investigations on some bottom sediments from the continental shelf, south of Sri Lanka

S.U.P. JINADASA
 Abstract  Full Text [PDF]  [1992.09 Kb]


The effect of paddle wheel and jet aerators on bottom velocity, dissolved oxygen levels and shrimp distribution in aquaculture ponds

R.G. SAMAN WIJESEKARA, NAKAO NOMURA AND MASATOSHI MATSUMURA
 Abstract   Full Text [PDF]  [3108.51 Kb]


Evaluation of the effects of infestation by trematodes and Lernaea on Catla calla, an Indian carp cultured in Sri Lanka

N.D. WIMALAWICKRAMA AND A. PATHIRATNE
 Abstract   Full Text [PDF]  [2381.23 Kb]


Microbiological quality of fresh and frozen cultured black tiger shrimp (Penaeus monodon) cultured in Sri Lanka

K.W.S. ARIYAWANSA, K.S.HETTIARACHCHE AND S.P. JAYASOORIYA
 Abstract   Full Text [PDF]  [2087.95 Kb]


Limnology of Kandy Lake before the outbreak of a cyanobacteria bloom in May 1999. III. Phytoplankton composition and succession

E.I.L. SILVA AND S.R.M.S. SAMARADIWAKARA
 Abstract  Full Text [PDF]  [1935.52 Kb]


Assessment of toxic heavy metal levels in black tiger shrimp, Peneaus monodon cultured in the northwestern province of Sri Lanka

S.P.S.D. SENADHEERA AND K.A.S. PATH1RATNE
 Abstract   Full Text [PDF]  [1616.56 Kb]


Lipid composition and fatty acid profiles of wild caught and cultured black tiger shrimp, Penaeus monodon, in Sri Lanka

M.D.S.T. DE CROOS, J.M.P.K. JAYASINGHE E.M.R.K.B. EDIRISINMIE AND D.N. DE S1LVA
 Abstract  Full Text [PDF]  [1564.37 Kb]


Food niche segregation among co-occurring endemic fish species in Sri Lanka

R.R.A.R. SHIRANTHA, M.J.S. WIJEYARATNE AND U.S. AMARASINGHE
 Abstract   Full Text [PDF]  [2783.45 Kb]


Fisheries, fish culture, tilapias and politics

C.H. FERNANDO AND J.J.S. GURGEL
 Abstract  Full Text [PDF]  [3309.71 Kb]

2004 - Vol 09


An investigation on the quality and handling practices of skipjack tuna (Katsuwonus pelamis) along the main commercial distribution channels of Beruwala fishery harbour

G.J. GANEGAMA ARACHCH1, M.G.I.U. KARTYAWASAM, P.P.M. HEENATIGALA, D.S.ARIYARATNE, T. DAHANAYEKA AND J.M.P.K. JAYASINGHE
 Abstract  Full Text [PDF]  [2529.35 Kb]


Limnology of Kandy Lake before the outbreak of cyanaobacteria bloom in May 1999. II Photosynthetic primary production

E.I.L. SILVA AND S.R.M.S. SAMARADIWAKARA
 Abstract  Full Text [PDF]  [3498.29 Kb]


Limnology of Kandy Lake before the outbreak of cyanobacteria bloom in May 1999. I. Physicochemical characteristics

E.I.L. SILVA AND S.R.M.S. SAMARADIWAKARA
 Abstract  Full Text [PDF]  [3802.72 Kb]


Rearing of larvae of giant freshwater prawn, Macrobrachium rosenbergii up to postlarvae using different feeds

J.M. ASOKA AND M. HETTIARACHCHI
 Abstract   Full Text [PDF]  [2253.78 Kb]


The diet composition of some economically important fishes in the three floodplain lakes in Agusan Marsh wildlife sanctuary in the Philippines

CHERYL M. TALDE, AUGUSTUS C. MAMARIL SR. AND MARIA LOURDES D. PALOMARES
 Abstract  Full Text [PDF]  [2247.66 Kb]


Population dynamics of Indian mackerel Rastrelliger kanagurta in northwestern coastal waters of Sri Lanka

P.A.T. FERNANDO
 Abstract   Full Text [PDF]  [2312.17 Kb]


Population dynamics of three commercially important bivalve species (Family: Veneridae) in Puttalam lagoon and Dutch bay, Sri Lanka

H.M.P. KITHSIRI, M.J.S. WIJEYARATNE AND U.S. AMARASINGRE
 Abstract  Full Text [PDF]  [2761.33 Kb]


Instruments for global fisheries management - A review

A. HETTIARACHCHI
 Abstract  Full Text [PDF]  [2529.12 Kb]

2003 - Vol 08


Quality Index Method developed for Frigate tuna (Auxis thazard)

K.W.S. ARIYAWANSA, D.N. WIJENDRA AND S.P.S.D. SENADHEERA
 Abstract  Full Text [PDF]  [513.23 Kb]


Captive Breeding of Some Endemic Ornamental Fish Species in Sri Lanka

H.M.P. KITHSlRI, P.P.G.S.N. SlRIWARDENA AND GR. HEMALEE RUPIKA
 Abstract  Full Text [PDF]  [361.47 Kb]


Species Composition and Altitudinal Distribution of Fish in Upper Walawe River Basin in Sri Lanka

J. JINADASA, H.M.B.K. HERATH AND J.M.H.S.K. SAMARASINGHE
 Abstract   Full Text [PDF]  [645.35 Kb]


Seasonal Abundance of Two Species of Rotifers (Brachionus calyciflorus and Keratella tropica) in Kandy Lake, a Tropical Urban Water Body in Sri Lanka

E.I.L. SILVA, M. EKANAYAKE AND K.M.B.0 KARUNATHILAKE
 Abstract   Full Text [PDF]  [690.6 Kb]


Some Growth Characteristics of Tetrahymena sp., a Parasite of Guppy, Poecilia reticulata and the Effect of a Mixture of Two Commonly used Protozoacides on its Population Density

D.C. HETTIARACHCHI AND M. HETTIARACHCHI
 Abstract   Full Text [PDF]  [376.74 Kb]


Bioaccumulation Potential of Three Toxic Heavy Metals in Shrimp, Penaeus monodon from Different Fractions of the Culture Environment

S.P.S.D. SENADHEERA AND K.A.S. PATHIRATNE
 Abstract   Full Text [PDF]  [600.02 Kb]


Perspectives and Economic Potential of Aquaculture of Tilapia: Experience in North-eastern Brazil Useful to Other Regions of the World

M.A. IGARASHl, M.A. DE OLIVEIRA AND J.J.S GURGEL
 Abstract  Full Text [PDF]  [1006.01 Kb]

2002 - Vol 07

Some aspects of the reproductive biology of three exotic cichlid species that colonize the Victoria reservoir, a deep upland reservoir in Sri Lanka

S. NATHANAEL and E.I.L. SILVA
 Abstract  Full Text [PDF]  [2884.96 Kb]


Effects of AquamatsTm on the Water Quality and Periphyton Growth in Nile Tilapia (Oreochromis niloticus) Fry Ponds

AC WEERA.SOORIYA and YANG Y1
 Abstract   Full Text [PDF]  [1546.23 Kb]


Heavy Metals in the Sediments of the Lower Ikpoba River, Benin City, Nigeria

F. A. OGUDE
 Abstract   Full Text [PDF]  [1431.62 Kb]


Renewed Justification for the Promotion of Carp Aquaculture in Seasonal Minor Irrigation tanks in Sri Lanka

S. CREECH, L. DASANAYAKE and J. WIJESINGHE
 Abstract   Full Text [PDF]  [2106.31 Kb]


Tilapias and Indigenous Fish Biodiversity in Sri Lanka

C. H. FERNANDO, R.R.A.R. SHIRANTHA, M.J.S. WL1EYARATNE and P.R.T. CUMARANATUNGA
 Abstract   Full Text [PDF]  [3450.13 Kb]

2001 - Vol 06


Mycoflora on dead animal substrates of mangrove habitats of Karnataka coast, India

K ANANDA and K K SRIDHAR
 Abstract  Full Text [PDF]  [326.74 Kb]


Food and feeding habits of Helostoma temmincki (Osteichthyes, Anabantidae), an introduced species, in a freshwater marsh in the wet zone of Sri Lanka

I U WICKRAMARATNE and U S AMARASTNGHE
 Abstract   Full Text [PDF]  [354.22 Kb]


Fish farming in irrigation systems: Sri Lanka and global view

C H FERNANDO and M HALWART
 Abstract  Full Text [PDF] 
 [4394.93 Kb]

2000 - Vol 05



Growth performance and colour enhancement of guppy, Poecilia reticulata when fed with locally formulated pigment included diets

M. HETTIARACHCHI and R M. P. S. DASSANAYAKE
 Abstract  Full Text [PDF]  [440.65 Kb]


Influence of some environmental factors on the abundance of three commercially important bivalve species (Family: Veneridae) in the Puttalam Lagoon and Dutch Bay, Sri Lanka.

H M P KITHSIRI, M J S WIJEYARATNE and U S AMARASUNGHE
 Abstract   Full Text [PDF]  [577.68 Kb]


A View of the Inland Fisheries of Sri Lanka: Past, Present and Future

C H FERNANDO
 Abstract   Full Text [PDF] 
 [1448.99 Kb]



Comparative Study on the Economics of Large and Small Scale Marine Fishing Operations in Sri Lanka

H D WIMALASENA and K RUPAMOORTHY
 Abstract  Full Text [PDF]  [832.85 Kb]


Investigations on quality aspects of tuna catches of multi-day boats at the Negombo fish landing site, in Sri Lanka

G J GANEGAMA ARACHCHI, K G C ARIYADASA, W M K PERERA, and JMPK JAYASINGHE
 Abstract   Full Text [PDF]  [376.05 Kb]


Handling practices and post-harvest losses of tuna catches from multi-day boats operating from fish landing site Negombo, Sri Lanka

G J GANEGAMA ARACHCHI, JMPK JAYASINGHE, MJS WIJEYARATNE, W M K PERERA, S JAYASOORIYA, and K HETTIARACHCHI
 Abstract  Full Text [PDF]  [448.16 Kb]


Hydraulic changes of three reservoirs (Minneriya, Udawalawe and Victoria) in Sri Lanka

E I L. SILVA and F. SCHIEMER
 Abstract   Full Text [PDF]  [547.23 Kb]


Catchment Characteristics and Water Quality of Three Reservoirs (Victoria, Minneriya and Udawalawe) in Sri Lanka

E I L. SILVA and G.A.R.K GAMLATH
 Abstract  Full Text [PDF]  [893.32 Kb]


Interspecific variation in tolerance of tilapia yolk sac fry (Family: Cichlidae) to copper stress

P P G S N SIRIWARDENA, K J RANA and D J BAIRD
 Abstract   Full Text [PDF]  [369.93 Kb]

1999 - Vol 04



Effect of Goraka Concentrate in Curing Mixture on the Quality of Traditional Fermented Fish (Jaadi)

P.S. JAYASINGHE, T.S.G. FONSEKA and A. BAMUNUARACHCHI
 Abstract   Full Text [PDF]  [1535.78 Kb]


Microsatellites as Genetic Markers for Identification of Exotic Cichlids and Their Hybrids in Sri Lanka — A Preliminary Study

M. P. K. S. K. DE SILVA, N. BAKER and P.B. MATHER
 Abstract  Full Text [PDF]  [387.03 Kb]


Mangrove Vegetation Structure and the Abundance of Shrimps in Chilaw Lagoon, Sri Lanka

J.W.K.K. JAYASUNDERA, M.D. AMARASINGHE and K.B. RANAWANA
 Abstract  Full Text [PDF]  [617.23 Kb]


Species Composition and Abundance of Aquatic Oligochaetes in Ihalagama Reservoir, a Shallow Perennial Minor Reservoir in Sri Lanka

G.A. WEERASUNDARA, A. PATHIRATNE and H H. COSTA
 Abstract  Full Text [PDF]  [378.38 Kb]


The Occurrence of Cyanobacteria in the Reservoirs of the Mahaweli River Basin in Sri Lanka

E.I.L. SILVA and M.J.S. WIJEYARATNE
 Abstract  Full Text [PDF]  [543.77 Kb]


Production Performance and Status of Health of Black Tiger Prawn Penaeus monodon (Fabricius) Subsequent to the First Outbreak of Systemic Ectodermal a

M. HETTIARACHCHI and U.P.K. EPA
 Abstract   Full Text [PDF]  [413.46 Kb]


Effect of Crowding, Food quality and Body Size on Food Utilization of the Exotic Snail, Pomacea canaliculata (Lamarck), a Potential Pest of Rice in Sr

P.A.D. AJITH KUMARA, W.U. CHANDRASEKARA and H.H. COSTA
 Abstract  Full Text [PDF]  [757.05 Kb]


Efficacy of Quinaldine Sulphate as an Anaesthetic for the Ornamental Carp (Cyprinus carpio) in Simulated Packaging for Long Distance Transport

M HETTIARACHCHI and S.P.S.D. SENADHEERA
 Abstract   Full Text [PDF]  [463.79 Kb]


Aquaculture Research Needs, Priorities and Capacities in Sri Lanka

J.M.P.K. JAYASINGHE and A.M. JAYASEKARA
 Abstract   Full Text [PDF]  [473.71 Kb]

1998 - Vol 03

Water Chemistry of the Nilanthe Oya, a Tributary in the Central Mahaweli Valley of Sri Lanka 2, Phosphorus, Nitrate and Nitrite Concentrations

E I L SILVA
 Abstract   Full Text [PDF]  [382.38 Kb]

Water Chemistry of the Nilambe Oya, a Tributary in the Central Mahaweli Valley of Sri Lanka 1. Some Physicochemical Characteristics

E.I.L. SILVA
 Abstract  Full Text [PDF]  [698.63 Kb]

Evaluation of Natural Antioxidants used in the Preservation of Shark (Carcharhinus falciformis) Liver Oil

CV L. JAYASINGHE, W.M.K PERERA and A. BAMUNUARACHCHI
 Abstract  Full Text [PDF]  [371.43 Kb]

Health Related Fatty Acids in Some Pelagic Fishes in Sri Lanka

E.M.R K.B. EDIRISINGHE, W.M K. PERERA, S.P JAYASOORTYA and A BAMUNUARACHCHI
 Abstract  Full Text [PDF]  [511.43 Kb]

The Natural Spawning Cycle of the Common Carp (Cyprinus carpio L.) in the Victoria Reservoir

SHIRANI NATHANAEL and UDENI EDIRISINGHE
 Abstract  Full Text [PDF]  [528.45 Kb]

Toxicity of Chlorpyrifos and Ditmethoate to Fingerlings of the Nile Tilapia, Oreochromis niloticits-: Cholinesterase Inhibition

A PATHIRATNE and P ATHAUDA
 Abstract  Full Text [PDF]  [390.11 Kb]

Culture of Moina macrocopa Straus using Organic and Inorganic Inputs

R.K S DIAS and A YAKUPITIYAGE
 Abstract  Full Text [PDF]  [615.84 Kb]

Socio-economics of the Fish Marketing System at the Victoria Reservoir

SHIRANI NATHANAEL and E.I L. SILVA
 Abstract  Full Text [PDF]  [416.35 Kb]

Feasibility of using Bivalve Molluscs to Reduce the Suspended Solid Content in Shrimp Farm Effluents

G.L.S.N. LIYANAGE, W.M.T.B.WANNINAYAKE and U EDIRISINGHE
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Some Studies on the Small Meshed Artisanal Gillnet Fishery in the Shallow Coastal Waters off Chilaw, Sri Lanka

P.A.A.T JAYAWARDANE and D S JAYAKODY
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The Parasites of Etroplus suratensis (Bloch) (Pisces: Cichlidae) and Their Effects on Aquaculture Management

N. NILAKARAWASAM and C SOMMERVILLE
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Review of Resource Assessment Information on Small Pelagic Fish Stocks in Coastal Marine Waters of Sri Lanka.

PAULINE DAYARATNE
 Abstract  Full Text [PDF]  [506.19 Kb]

1997 - Vol 02

Pricing Mangrove Resources and Amenities

M. SIVAKLMAR, W. ROBERT FERNANDO and P. STEELE
 Abstract  Full Text [PDF]  [475.08 Kb]


Indicator Organisms of Environmental Conditions in a Lotic Water body in Sri Lanka

G.A.R.K. GAMLATH and M.J.S. WIJEYARATNE
 Abstract  Full Text [PDF]  [462.25 Kb]


Spoilage Patterns and Organoleptic Acceptability of Sardinella longiceps Stored at Four Different Temperatures

S.Y NAMARATNE and W M.A.K. WANISEKERA
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Trends in Seasonal Availability of Marine Food Fish at the Central Market, Kandy, Sri Lanka

DILRUKSHI N.DE SILVA
 Abstract  Full Text [PDF]  [670.84 Kb]


The Proximate Composition and Element Spectrum of the Flesh of the Three Cichlid Species in the Victoria Reservoir

SHIRANI NATHANAEL and E.I L. SILVA
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Effect of Supplementary Feed o n the Growth and Survival of Labeo rohita (Rohu) Postlarvae

M H.S. ARIYARATNE and P.K.DE SILVA
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Species Composition, Abundance and Distribution of Aquatic Oligochaetes in Colombo (Beira) Lake, Sri Lanka

H. H. COSTA, G. A. WEERASUNDARA and A. PATHIRATNE
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Environmental Implications of Chromium in Tannery Wastes in the Kelani Estuarine Water

P.K.M. WJEGOONAWARDANE, S.Y. NAMARATHNE, and W.D. RATNASOORIYA
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Evaluation of Presently Practiced Water Exchange Rates on the Performance of Penaeus monodon and on the Water Quality in Semi-Intensive Culture System

U. EDIRISINGHE, J .M.P.K. JAYASINGHE and. P. WANNIGAMA
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Population Dynamics of Penaeus indicus (Crustacea: Penaeidae) in Rekawa Lagoon, Sri Lanka

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Leaf Litter Decomposition and Changes in Leaf C:N Ratio in the Mangals of Negombo Lagoon

V. PAHALAWATTARACHCHI and M.D. AMARASINGHE
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Leaf Litter Decomposition in the Mangrove Ecosystems of Dutch Bay

M.D. AMARASINGHE
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1996 - Vol 01

Effects of Monsoonal Currents, Rainfall and Lunar Phase on the Abundance of Amblygaster sinn in the Coastal Waters off Negombo, Sri Lanka.

W.P.N. KARUNASINGHE and MTS. WIJEYARATNE
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A Preliminary Analysis of the Reef Fishery in the Associated Coastal Waters of the Puttalam Estuarine System

P.A.A.T. JAYAWARDANE and P. DAYARATNE
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Sustainable Marine Fisheries Development

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Integrated Coastal Resources Management: Lessons from Sri Lanka

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