Evidence for the displacement of an endemic New Zealand spider,Latrodectus katipoPowell by the South African speciesSteatoda capensisHann (Araneae: Theridiidae)
- 1 July 1990
- journal article
- research article
- Published by Taylor & Francis in New Zealand Journal of Zoology
- Vol. 17 (3), 295-307
- https://doi.org/10.1080/03014223.1990.10422937
Abstract
The competitive interactions between Latrodectus katipo and Steatoda capensis were studied under the hypothesis that L. katipo is being displaced from its natural habitat by competition from S. capensis. Use of trophic and spatial resources were studied. High overlap for both resources was found. Data on reproductive potential revealed that S. capenisis has a significantly higher reproductive output. Laboratory predation experiments indicated L. katipo adults are not inferior to S. capensis. Evidence suggesting displacement following L. katipo population crashes was obtained. Differences in reproductive potential and seasonal reproduction are proposed as the mechanism underlying the displacement.Keywords
This publication has 17 references indexed in Scilit:
- A new combination involvingLithyphantes lepidusCambridge 1897 and a new name forTeutana lepidaCambridge 1903 (Araneae, Theridiidae)New Zealand Journal of Zoology, 1990
- Evidence for displacement of a North American spider, Steatoda borealis (Hentz), by the European species S. bipunctata (Linnaeus) (Araneae: Theridiidae)Canadian Journal of Zoology, 1986
- Partitioning of the space in tussocks of the sedge, Carex distorts, during winter, by a spider communityJournal of Zoology, 1984
- The Experimental Analysis of Competition between Two Syntopic Species of Orb‐Web Spiders (Araneae: Araneidae)Ecology, 1983
- Patterns of Resource Use and Tests for Competitive Release in a Spider CommunityEcology, 1983
- Foraging ecology and niche partitioning in orb-weaving spidersOecologia, 1981
- Niche Overlap and Diffuse CompetitionProceedings of the National Academy of Sciences, 1974
- Vertical Stratification in Orb‐Web Spiders (Araneidae, Araneae) and a Consideration of Other Methods of CoexistenceEcology, 1974
- On the Measurement of Niche Breadth and OverlapEcology, 1971
- Segregation and Symmetry in Two-Species Populations as Studied by Nearest- Neighbour RelationshipsJournal of Ecology, 1961