Möchten Sie über diese Zeitschrift informiert bleiben? Klicken Sie bitte auf die Buttons, um unsere Alerts zu abonnieren.
Möchten Sie über diese Zeitschrift informiert bleiben? Klicken Sie bitte auf die Buttons, um unsere Alerts zu abonnieren.
Experimental Demonstration of Selective Predation On Gasterosteus Aculeatus
in BehaviourSearch for other papers by G.E.E. Moodie in
Current site
Google Scholar
Search for other papers by J.D. McPhail in
Current site
Google Scholar
Search for other papers by D.W. Hagen in
Current site
Google Scholar
Abstract
Three groups of independently conducted tests demonstrate selective predation on sticklebacks having various plate numbers. Differential survival of sticklebacks in some tests was clearly due to behavioural differences. Since fish from two populations were used, however, we are unable to say whether this indicates differential predation upon plate classes, or differences between populations, or both. Fish with seven plates seemed to be at a selective advantage only under winter conditions in the laboratory, and these results conflict with those from the field where sevens are at an advantage during the summer. This may result from behavioural changes associated with breeding during the summer. Results of test conducted under winter conditions are in accord with selective predation observed in three natural populations. Given the different feeding behaviour of the predators it seems likely that the traits contributing to survival are geneeral ones that function in a variety of physical and biotic environments.
Kauf
Sofortzugang erwerben (PDF-Download und unbegrenzter Online-Zugang):
Institutszugang
Melden Sie sich mit Open Athens, Shibboleth oder Ihren institutionellen Anmeldedaten an.
Persönliche Anmeldung
Melden Sie sich mit Ihrem brill.com-Konto an
| Insgesamt | Letzte 365 Tage | In den letzten 30 Tagen | |
|---|---|---|---|
| Aufrufe von Kurzbeschreibungen | 334 | 65 | 4 |
| Gesamttextansichten | 137 | 11 | 0 |
| PDF-Downloads | 32 | 2 | 0 |
Experimental Demonstration of Selective Predation On Gasterosteus Aculeatus
in BehaviourSearch for other papers by G.E.E. Moodie in
Current site
Google Scholar
PubMed
Search for other papers by J.D. McPhail in
Current site
Google Scholar
PubMed
Search for other papers by D.W. Hagen in
Current site
Google Scholar
PubMed
Abstract
Three groups of independently conducted tests demonstrate selective predation on sticklebacks having various plate numbers. Differential survival of sticklebacks in some tests was clearly due to behavioural differences. Since fish from two populations were used, however, we are unable to say whether this indicates differential predation upon plate classes, or differences between populations, or both. Fish with seven plates seemed to be at a selective advantage only under winter conditions in the laboratory, and these results conflict with those from the field where sevens are at an advantage during the summer. This may result from behavioural changes associated with breeding during the summer. Results of test conducted under winter conditions are in accord with selective predation observed in three natural populations. Given the different feeding behaviour of the predators it seems likely that the traits contributing to survival are geneeral ones that function in a variety of physical and biotic environments.
| Insgesamt | Letzte 365 Tage | In den letzten 30 Tagen | |
|---|---|---|---|
| Aufrufe von Kurzbeschreibungen | 334 | 65 | 4 |
| Gesamttextansichten | 137 | 11 | 0 |
| PDF-Downloads | 32 | 2 | 0 |
