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R.M.D. Somarathna and K.H.G.M. De Silva

FOOD SELECTION OF TWO CO-OCCURRING CARPLETS BARBUS CUMINGI AND BARBUS NIGROFASCIATUS (OSTEICHTHYES, CYPRINIDAE) IN A MOUNTAIN STREAM OF SRI LANKA by K.H.G.M. DE SILVA and R.M.D. SOMARATHNA ( Department of Zoology, University of Peradeniya, Peradeniya, Sri Lanka) SUMMARY The food and feeding

Claus Wedekind

sites. Keywords: mate preference, mate choice, Cyprinidae, roach, mating system, lek. Introduction Roach are common European fish which normally spawn in very large groups without any obvious social relationship. Therefore, it is not yet clear whether they have the possibility to choose their mate and

H. PENER–SALOMON

Out of a population of 136 of B. canis (Cyprinidae), three specimens with multiple optic papillae were found. The typical and atypical optic were examined.

Eshete Dejen, Jan W.M. Osse, Martin De Graaf and Ferdinand A. Sibbing

largely due to overexploiting their spawning grounds. KEY WORDS: Barbus, Cyprinidae, diet shifts, ecomorphology, evolution, fisheries, mole- cular genetics, species flock, piscivory, Lake Tana. INTRODUCTION Lake Tana Lake Tana, source of the Blue Nile, is situated in the north-western highlands of

K. Kortmulder, J.J.A. Van Iersel and David W. Dunham

THREAT AND APPEASEMENT IN BARBUS STOLICZKANUS (CYPRINIDAE) by DAVID W. DUNHAM,1)2) K. KORTMULDER and J. J. A. VAN IERSEL3) (Zoological Laboratory, University of Leiden, The Netherlands) (With 3 Figures) (Rec. 9-III-1967) PURPOSE Threat postures are known for many species of animals and, since

P. Maitipe, K. Kortmulder and S.S. DE SILVA

THE IDENTITY OF PUNTIUS MELANAMPYX SINGHALA (DUNCKER, 1911) (PISCES, CYPRINIDAE) by S. S. DE SILVA1, K. KORTMULDER2 and P. MAITIPE1 Department of Zoology, Ruhuna University College, Matara, Sri Lanka (1); Zoologisch Laborato- rium, Leiden, The Netherlands (2) SUMMARY It is shown that Puntius

K. Kortmulder

ETHO-ECOLOGY OF SEVENTEEN BARBUS SPECIES (PISCES; CYPRINIDAE)* by K. KORTMULDER** (Department of Ethology, Zoological Laboratory, University of Leiden, The Netherlands) SUMMARY Barbus species greatly differ among each other in the structure of reproductive be- haviour. Two distinct types have

Arjan Palstra, Martin de Graaf, Leo Nagelkerke and Ferdinand Sibbing

© Koninklijke Brill NV, Leiden, 2010 DOI 10.1163/157075610X491725 Animal Biology 60 (2010) 183–193 brill.nl/ab Experimental evidence for the biological species status in Lake Tana’s Labeobarbus fl ock (Cyprinidae) Martin de Graaf 1, * , Leo A.J. Nagelkerke 2 , Arjan P. Palstra 1 , Ferdinand A

S.S. DE SILVA, C.D. DE SILVA and P.R.T. Cumaranatunga

FOOD, FEEDING ECOLOGY AND MORPHOLOGICAL FEATURES ASSOCIATED WITH FEEDING OF FOUR CO-OCCURRING CYPRINIDS (PISCES: CYPRINIDAE) by S.S.DE SIL VA1), P.R. T.CUMARANATUNGA1) AND C.D.DE SILVA2) (1) Department of Zoology, Vidyalankara Campus, University of Sri Lanka) (2) Department of Zoology, Colombo

Paul I. Ward and Catrin Hofstetter

POPULATION AND SEX DIFFERENCES IN COLOUR VISION IN THE EUROPEAN MINNOW PHOXINUS PHOXINUS (CYPRINIDAE) by CATRIN HOFSTETTER and PAUL I. WARD1) (Zoologisches Museum der Universität Zürich, Winterthurerstr. 190, 8057 Zürich, Switzerland) (With 2 Figures) (Acc. 17-VI-1992) Summary The abilities of