The biology of the Alpine Accentor Prunella collaris. III. The coevolution of Alpine Accentors and lice (Phthiraptera).
AbstractThe species Philopterus emiliae is more abundant in the bodies of accentors than Ricinus subpallidus. Of the 100 inspected accentors, 36 were insected by Ph.emiliae, and 10 by R. subpallidus. There is probably no evidence of competition between the two lice. Two birds only harboured both species of lice. Seasonal change is probably important determinant of population size and sex ratio of lice Ph. emiliae. Females of lice are probably capable of adaptive selection of females of accentors for the purposes of vertical transmission and lice dispersal. Species Ph. emiliae is also capable of adaptive sex ratio manipulation. Presuming a female bias in the lice departing from large late winter subpopulations to colonize on new hosts (from late May to early August) could explain the female bias of the summer subpopulations. Male bias of louse subpopulation occurred in autumn and early winter.
© PRUNELLA Publishers
All rights reserved. No part of this publication may be reproduced, stored in retrieval system or transmitted in any form or by any means, photocopying, elctronic, recording, etc. without the prior written permission of the publisher, PRUNELLA Publishers - RNDr. Marián Janiga, CSc., Vavra Šrobára 1524/6, 03401 Ružomberok, Slovakia, IČO: 30 525 764. Permission requests for creating new collective works, for resale, for advertising or promotional purposes, or for general distribution, should be addressed to the publisher as mentioned in the Slovak Copyright Law. Free submission of an article for publication entails the author(s) irrevocable authorization of the publisher to collect any sums or considerations for copying or reproduction payable by third parties, as mentioned in the Slovak Copyright Law. Printed in June 2018. EV 3492/09.