Zooplankton preference of two species of freshwater ornamen-tal fish larvae
Por:
Nandini S., Sarma S.S.S.
Publicada:
1 ene 2000
Resumen:
The dietary preferences of larval mollies. Poecilia sphenops Steindachner, 1863, and angel fish, Pterophyllum scalare (Lichtenstein, 1823), were studied using the rotifer Brachionus calyciflorus and the cladoceran Moina macrocopa as prey. The experiments were conducted at 5- to 7-day intervals from day 5 after hatching until day 55 for mollies, and from day 15 after hatching until day 40 for angel fish. Rotifers and cladocerans were offered alone or in combinations. Moina individuals were sized as neonates or adults before being used as prey. Regardless of their age, the larval mollies preferred rotifers, while even during their early stages the angel fish consumed higher numbers of cladocerans. Prey preference values were calculated using Murdoch's electivity index.
Filiaciones:
Nandini S.:
UIICSE/CyMA Project, UNAM, Campus Iztacala, Tlalnepantla, Los Reyes AP 314, Estado de Mexico, Mexico
Sarma S.S.S.:
Carrera de Biología, UNAM, Campus Iztacala, Tlalnepantla, Los Reyes AP 314, Estado de Mexico, Mexico
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