---
_id: '3637'
abstract:
- lang: eng
text: 'Hybridizing taxa remain distinct for two main reasons. Natural selection
acts against hybrids either because of their incompatible genome, or because of
differential adaptation of the pure types across an environmental gradient. Here,
we provide experimental evidence that the location of the Bombina (Anura: Discoglossidae)
hybrid zone in Croatia is, at least in part, determined by differential adaptation.
B. bombina typically breeds in permanent water in the lowland, whereas B. variegata
reproduces in puddles at higher elevations. In a reciprocal translocation, pure
bombina and variegata tadpoles were introduced in equal proportions into lowland
pond enclosures and upland puddles. After three weeks, variegata exceeded bombina
in survival and growth in both habitats. The effect was most pronounced in puddles,
where the few surviving bombina tadpoles had hardly grown at all. In comparison
to variegata, the smaller hatchlings of bombina grew relatively faster in ponds,
but remained smaller in absolute terms. Nevertheless, B. bombina appears better
adapted to ponds than to puddles. The mechanisms by which variegata is excluded
from ponds remain to be demonstrated. These data show that habitat dependent selection
prevents the invasion of bombina tadpole traits into the variegata gene pool.
Given the strong linkage disequilibria in hybrid populations, differential selection
on tadpoles may be sufficient to maintain the integrity of the two gene pools.'
acknowledgement: We thank Franjo Perovioc for invaluable help in the field and the Perovioc
family for generous hospitality. Logistical and practical support was provided by the Croatian
Museum of Natural History in particular Bojan Lazar and Eduarrd Kletecki. The people
of Velesevec kindly tolerated our enclosure bags in their village pond. Stejpan
Ticeric generously provided a base for our work in Perkovec. Professor S. Jelaska of
the U niversity of Zagreb allowed us unlim ited access to her laboratory, where all tadpole
m easurem ents were taken. Loeske K ruuk carried out the electrophoretic analysis which established the taxonomic
significance of tadpole belly colour. We thank Ian Wilson for statistical advice
and Tim Halliday, Peter Jones, Loeske Kruuk, Jaroslav Pialek and two anonymous
referees for helpful comments on the manuscript. This research was supported by
a grant from the NERC (No. GR3/8002) to N.H.B.
article_processing_charge: No
article_type: original
author:
- first_name: Catriona
full_name: Maccallum, Catriona
last_name: Maccallum
- first_name: Beate
full_name: Nürnberger, Beate
last_name: Nürnberger
- first_name: Nicholas H
full_name: Barton, Nicholas H
id: 4880FE40-F248-11E8-B48F-1D18A9856A87
last_name: Barton
orcid: 0000-0002-8548-5240
citation:
ama: Maccallum C, Nürnberger B, Barton NH. Experimental evidence for habitat dependent
selection in a Bombina hybrid zone. Proceedings of the Royal Society of London
Series B Biological Sciences. 1995;260(1359):257-264. doi:10.1098/rspb.1995.0089
apa: Maccallum, C., Nürnberger, B., & Barton, N. H. (1995). Experimental evidence
for habitat dependent selection in a Bombina hybrid zone. Proceedings of the
Royal Society of London Series B Biological Sciences. Royal Society of London.
https://doi.org/10.1098/rspb.1995.0089
chicago: Maccallum, Catriona, Beate Nürnberger, and Nicholas H Barton. “Experimental
Evidence for Habitat Dependent Selection in a Bombina Hybrid Zone.” Proceedings
of the Royal Society of London Series B Biological Sciences. Royal Society
of London, 1995. https://doi.org/10.1098/rspb.1995.0089.
ieee: C. Maccallum, B. Nürnberger, and N. H. Barton, “Experimental evidence for
habitat dependent selection in a Bombina hybrid zone,” Proceedings of the Royal
Society of London Series B Biological Sciences, vol. 260, no. 1359. Royal
Society of London, pp. 257–264, 1995.
ista: Maccallum C, Nürnberger B, Barton NH. 1995. Experimental evidence for habitat
dependent selection in a Bombina hybrid zone. Proceedings of the Royal Society
of London Series B Biological Sciences. 260(1359), 257–264.
mla: Maccallum, Catriona, et al. “Experimental Evidence for Habitat Dependent Selection
in a Bombina Hybrid Zone.” Proceedings of the Royal Society of London Series
B Biological Sciences, vol. 260, no. 1359, Royal Society of London, 1995,
pp. 257–64, doi:10.1098/rspb.1995.0089.
short: C. Maccallum, B. Nürnberger, N.H. Barton, Proceedings of the Royal Society
of London Series B Biological Sciences 260 (1995) 257–264.
date_created: 2018-12-11T12:04:22Z
date_published: 1995-06-22T00:00:00Z
date_updated: 2022-06-27T10:14:02Z
day: '22'
doi: 10.1098/rspb.1995.0089
extern: '1'
intvolume: ' 260'
issue: '1359'
language:
- iso: eng
main_file_link:
- url: https://royalsocietypublishing.org/doi/10.1098/rspb.1995.0089
month: '06'
oa_version: None
page: 257 - 264
publication: Proceedings of the Royal Society of London Series B Biological Sciences
publication_identifier:
issn:
- 0962-8452
publication_status: published
publisher: Royal Society of London
publist_id: '2746'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Experimental evidence for habitat dependent selection in a Bombina hybrid zone
type: journal_article
user_id: ea97e931-d5af-11eb-85d4-e6957dddbf17
volume: 260
year: '1995'
...