Verwantskap tussen groepgrootte en voedingsukses van vee-reiers (Bubulcus ibis) in die sentrale Vrystaat
Suid-Afrikaanse Tydskrif vir Natuurwetenskap en Tegnologie/South African Journal of Science and Technology
| Field | Value | |
| Title | Verwantskap tussen groepgrootte en voedingsukses van vee-reiers (Bubulcus ibis) in die sentrale Vrystaat Relationship between group size and feeding success of cattle egrets (Bubulcus ibis) in the central Free State | |
| Creator | Butler, Hennie Kok, Ordino | |
| Description | Ongeag habitat of tydstip van die dag kom vee-reiers wat onafhanklik van gashere voed oor diealgemeen in groter groepe voor as dié wat in noue assosiasie met hoefdiere voed. Die gemiddeldegroepgrootte van drie individue wat in assosiasie met gashere voed, bly merkwaardig konstantmet betrekking tot uiteenlopende situasies. Gebaseer op die tipe habitat en weispoed van diebetrokke gasheer behaal vee-reiers die hoogste voedingsukses (aantal prooi-items) met die minsteenergie-insette (aantal treë) in assosiasie met beeste, en in ’n mindere mate met die naverwantebuffel. Vee-reiers wat in groepsverband voed, ondervind sonder uitsondering ’n hoër voedingsuksesas enkelinge. Resultate van voedingseksperimente, asook die uitsonderlike voorkoms vansogenaamde voedingslinies, bevestig die verskynsel dat die voedingsukses van vee-reiers tennouste verband hou met die grootte van die voedingsgroep. Regardless of habitat or time of day, cattle egrets feeding independently of hosts generally occurring larger groups than those feeding in close association with ungulates. The average group size of three individuals feeding in association with hosts stays remarkably constant with regard to divergent situations. Based on the type of habitat and the grazing speed of the host concerned, cattle egrets achieve the highest feeding success (number of prey items) with the least energy inputs (number of paces) in association with cattle, and to a lesser extent with the closely related buffalo. Compared to solitary birds, cattle egrets feeding in groups experience without exceptional higher feeding success. Results of feeding experiments, as well as the exceptional occurrence of so-called feeding lines, confirm the phenomenon that the feeding success of cattle egrets correlates closely with the size of the feeding group. | |
| Publisher | AOSIS | |
| Date | 2008-09-16 | |
| Identifier | 10.4102/satnt.v27i3.92 | |
| Source | Suid-Afrikaanse Tydskrif vir Natuurwetenskap en Tegnologie; Vol 27, No 3 (2008); 216-227 Suid-Afrikaanse Tydskrif vir Natuurwetenskap en Tegnologie; Vol 27, No 3 (2008); 216-227 2222-4173 0254-3486 | |
| Language | eng | |
| Relation |
The following web links (URLs) may trigger a file download or direct you to an alternative webpage to gain access to a publication file format of the published article:
https://journals.satnt.aosis.co.za/index.php/satnt/article/view/92/779
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