caa a22 4500 47711556X CHVBK 20180405111621.0 cr unu---uuuuu 170330e19960701xx s 000 0 eng 10.1007/BF00005001 doi (NATIONALLICENCE)springer-10.1007/BF00005001 Ontogenetic habitat shifts by Galaxias gracilis (Galaxiidae) between the littoral and limnetic zones of Lake Kanono, New Zealand [Elektronische Daten] [David Rowe, Ben Chisnall] Synopsis: Diel and spatial differences in distribution were determined for the larvae, juveniles, and adults of Galaxias gracilis (Galaxiidae) in a New Zealand dune lake during summer months. Larvae (mostly 10-25 mm TL) and juveniles (25-40 mm TL) inhabited shallow (0-3 m) waters of the limnetic zone and fed predominantly on two limnetic zooplankton species; Bosmina meridionalis and a calanoid copepod. At about 40 mm TL, fish moved from the limnetic to the littoral zone and expanded dietary breadth from two to over seven main prey species, including five species of littoral invertebrates. After reaching a size of about 60 mm TL, most fish moved back offshore to the deeper waters (5-15 m) of the limnetic zone during the day, moving back to the littoral zone at night to feed on invertebrates. The selection of different intra-lacustrine habitats by the various size groups of G. gracilis, and the movements between them, are interpreted as adaptive responses to the interaction between ontogenetic changes in feeding requirements and predation risk. Kluwer Academic Publishers, 1996 Rare fish nationallicence Distribution nationallicence Diet nationallicence Lakes nationallicence Habitat shifts nationallicence Rowe David National Institute of Water and Atmospheric Research Ltd., P.O. Box 11 115, Hamilton, New Zealand aut Chisnall Ben National Institute of Water and Atmospheric Research Ltd., P.O. Box 11 115, Hamilton, New Zealand aut Environmental Biology of Fishes Kluwer Academic Publishers 46/3(1996-07-01), 255-264 0378-1909 46:3<255 1996 46 10641 https://doi.org/10.1007/BF00005001 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00005001 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Rowe David National Institute of Water and Atmospheric Research Ltd., P.O. Box 11 115, Hamilton, New Zealand aut NATIONALLICENCE 700 1- Chisnall Ben National Institute of Water and Atmospheric Research Ltd., P.O. Box 11 115, Hamilton, New Zealand aut NATIONALLICENCE 773 0- Environmental Biology of Fishes Kluwer Academic Publishers 46/3(1996-07-01), 255-264 0378-1909 46:3<255 1996 46 10641 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer