Population structure of <i>Argas arboreus<i/> (Acari : Argasidae) ticks associated with seasonally abandoned mixed heronries, dominated by cattle egrets (<i>Bubulcus ibis<i/>), in South Africa

During winter populations of Argas arboreus from heronries of the cattle egret, Bubulcus ibis, in South Africa are composed of adults, with some predominance of males, and II-IV instar nymphs, in a state of diapause. The period of tick activity, including reproduction and development of eggs, lar...

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Main Authors: V.N. Belozerov, D.J. Van Niekerk, H.J.B. Butler
Format: Article
Language:English
Published: AOSIS 2003-11-01
Series:Onderstepoort Journal of Veterinary Research
Online Access:https://ojvr.org/index.php/ojvr/article/view/297
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author V.N. Belozerov
D.J. Van Niekerk
H.J.B. Butler
author_facet V.N. Belozerov
D.J. Van Niekerk
H.J.B. Butler
author_sort V.N. Belozerov
collection DOAJ
description During winter populations of Argas arboreus from heronries of the cattle egret, Bubulcus ibis, in South Africa are composed of adults, with some predominance of males, and II-IV instar nymphs, in a state of diapause. The period of tick activity, including reproduction and development of eggs, larvae and N1 nymphs, is synchronized with the nesting and breeding season of their avian hosts. It begins during spring with the return of birds to the heronry, and ceases in autumn through induction of reproductive diapause in engorged females, and behavioural diapause in unfed nymphs and adult ticks. Many ticks showed morphological anomalies and malformations, the study of which could possibly be used for monitoring of environmental pollution.
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spelling doaj.art-4e2e7c96681e450d97d5d6e6d6feb0772022-12-21T18:11:07ZengAOSISOnderstepoort Journal of Veterinary Research0030-24652219-06352003-11-0170432533010.4102/ojvr.v70i4.297269Population structure of <i>Argas arboreus<i/> (Acari : Argasidae) ticks associated with seasonally abandoned mixed heronries, dominated by cattle egrets (<i>Bubulcus ibis<i/>), in South AfricaV.N. BelozerovD.J. Van NiekerkH.J.B. ButlerDuring winter populations of Argas arboreus from heronries of the cattle egret, Bubulcus ibis, in South Africa are composed of adults, with some predominance of males, and II-IV instar nymphs, in a state of diapause. The period of tick activity, including reproduction and development of eggs, larvae and N1 nymphs, is synchronized with the nesting and breeding season of their avian hosts. It begins during spring with the return of birds to the heronry, and ceases in autumn through induction of reproductive diapause in engorged females, and behavioural diapause in unfed nymphs and adult ticks. Many ticks showed morphological anomalies and malformations, the study of which could possibly be used for monitoring of environmental pollution.https://ojvr.org/index.php/ojvr/article/view/297
spellingShingle V.N. Belozerov
D.J. Van Niekerk
H.J.B. Butler
Population structure of <i>Argas arboreus<i/> (Acari : Argasidae) ticks associated with seasonally abandoned mixed heronries, dominated by cattle egrets (<i>Bubulcus ibis<i/>), in South Africa
Onderstepoort Journal of Veterinary Research
title Population structure of <i>Argas arboreus<i/> (Acari : Argasidae) ticks associated with seasonally abandoned mixed heronries, dominated by cattle egrets (<i>Bubulcus ibis<i/>), in South Africa
title_full Population structure of <i>Argas arboreus<i/> (Acari : Argasidae) ticks associated with seasonally abandoned mixed heronries, dominated by cattle egrets (<i>Bubulcus ibis<i/>), in South Africa
title_fullStr Population structure of <i>Argas arboreus<i/> (Acari : Argasidae) ticks associated with seasonally abandoned mixed heronries, dominated by cattle egrets (<i>Bubulcus ibis<i/>), in South Africa
title_full_unstemmed Population structure of <i>Argas arboreus<i/> (Acari : Argasidae) ticks associated with seasonally abandoned mixed heronries, dominated by cattle egrets (<i>Bubulcus ibis<i/>), in South Africa
title_short Population structure of <i>Argas arboreus<i/> (Acari : Argasidae) ticks associated with seasonally abandoned mixed heronries, dominated by cattle egrets (<i>Bubulcus ibis<i/>), in South Africa
title_sort population structure of i argas arboreus i acari argasidae ticks associated with seasonally abandoned mixed heronries dominated by cattle egrets i bubulcus ibis i in south africa
url https://ojvr.org/index.php/ojvr/article/view/297
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