Share this article    



The biology of Ixodes (Ceratixodes) uriae White. 1852 in Newfoundland

Eveleigh, E.S. and Threlfall, W.

1974 - Volume: 16 Issue: 4 pages: 621-635


Acari Ixodes (Ceratixodes) uriae weight blood sucking egg laying copulation development deasonal abundance Newfoundland biology distribution patterns


The distribution of Ixodes itriae depended upon the density of the nesting birds and the type of substrate. All stages (except eggs) showed an unimodal peak of activity in the last week of June and the first week of July. Newly molted males, nymphs and larvae were recovered in August. Uria aalge was the preferred host of I. itriae although the extent of utilization depends upon the availability of the host. Nymphs require the least amount of time to engorge followed by larvae and females. Feeding sites of all the stages in the laboratory indicate that the head of the host is preferred despite a preference for other body areas in the field. Percentage weight increases of each stage after engorgement indicate that larval weight increases least, followed by females and nymphs. Observations on reproductive behaviour Were made and measurements of a spermatophore given. The oviposition rate and the development of each stage under different temperature and humidity regimes was determined. Details of the life cycle, based on field and laboratory data, are presented.

Please read and follow the instructions to post any comment or correction.

Article editorial history
Date published:

Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License
1974 Eveleigh, E.S. and Threlfall, W.
 Download article

Download the citation
RIS with abstract 
(Zotero, Endnote, Reference Manager, ProCite, RefWorks, Mendeley)
RIS without abstract 
(Zotero, BibTeX)
(PubMed, Txt)
Article metrics
Number of distinct pdf views

Cited by: view citations with

Search via ReFindit