---
_id: '1892'
abstract:
- lang: eng
  text: Behavioural variation among conspecifics is typically contingent on individual
    state or environmental conditions. Sex-specific genetic polymorphisms are enigmatic
    because they lack conditionality, and genes causing adaptive trait variation in
    one sex may reduce Darwinian fitness in the other. One way to avoid such genetic
    antagonism is to control sex-specific traits by inheritance via sex chromosomes.
    Here, controlled laboratory crossings suggest that in snail-brooding cichlid fish
    a single locus, two-allele polymorphism located on a sex-linked chromosome of
    heterogametic males generates an extreme reproductive dimorphism. Both natural
    and sexual selection are responsible for exceptionally large body size of bourgeois
    males, creating a niche for a miniature male phenotype to evolve. This extreme
    intrasexual dimorphism results from selection on opposite size thresholds caused
    by a single ecological factor, empty snail shells used as breeding substrate.
    Paternity analyses reveal that in the field parasitic dwarf males sire the majority
    of offspring in direct sperm competition with large nest owners exceeding their
    size more than 40 times. Apparently, use of empty snail shells as breeding substrate
    and single locus sex-linked inheritance of growth are the major ecological and
    genetic mechanisms responsible for the extreme intrasexual diversity observed
    in Lamprologus callipterus.
acknowledgement: "This research was supported by grants of the Swiss National Science
  Foundation to M.T.\r\nWe thank Tetsu Sato for providing field samples, Olivier Goffinet
  for field assistance, Dolores Schütz for vital help in the field and with the manuscript,
  David Lank, Barbara Taborsky, Suzanne Alonzo and two anonymous referees for comments
  on earlier manuscript versions, and the Fisheries Department, Ministry of Agriculture
  and Livestock of Zambia, for permission and support."
article_number: '20140253'
article_processing_charge: No
article_type: original
author:
- first_name: Sabine
  full_name: Ocana, Sabine
  last_name: Ocana
- first_name: Patrick
  full_name: Meidl, Patrick
  id: 4709BCE6-F248-11E8-B48F-1D18A9856A87
  last_name: Meidl
- first_name: Danielle
  full_name: Bonfils, Danielle
  last_name: Bonfils
- first_name: Michael
  full_name: Taborsky, Michael
  last_name: Taborsky
citation:
  ama: Ocana S, Meidl P, Bonfils D, Taborsky M. Y-linked Mendelian inheritance of
    giant and dwarf male morphs in shell-brooding cichlids. <i>Proceedings of the
    Royal Society of London Series B Biological Sciences</i>. 2014;281(1794). doi:<a
    href="https://doi.org/10.1098/rspb.2014.0253">10.1098/rspb.2014.0253</a>
  apa: Ocana, S., Meidl, P., Bonfils, D., &#38; Taborsky, M. (2014). Y-linked Mendelian
    inheritance of giant and dwarf male morphs in shell-brooding cichlids. <i>Proceedings
    of the Royal Society of London Series B Biological Sciences</i>. The Royal Society.
    <a href="https://doi.org/10.1098/rspb.2014.0253">https://doi.org/10.1098/rspb.2014.0253</a>
  chicago: Ocana, Sabine, Patrick Meidl, Danielle Bonfils, and Michael Taborsky. “Y-Linked
    Mendelian Inheritance of Giant and Dwarf Male Morphs in Shell-Brooding Cichlids.”
    <i>Proceedings of the Royal Society of London Series B Biological Sciences</i>.
    The Royal Society, 2014. <a href="https://doi.org/10.1098/rspb.2014.0253">https://doi.org/10.1098/rspb.2014.0253</a>.
  ieee: S. Ocana, P. Meidl, D. Bonfils, and M. Taborsky, “Y-linked Mendelian inheritance
    of giant and dwarf male morphs in shell-brooding cichlids,” <i>Proceedings of
    the Royal Society of London Series B Biological Sciences</i>, vol. 281, no. 1794.
    The Royal Society, 2014.
  ista: Ocana S, Meidl P, Bonfils D, Taborsky M. 2014. Y-linked Mendelian inheritance
    of giant and dwarf male morphs in shell-brooding cichlids. Proceedings of the
    Royal Society of London Series B Biological Sciences. 281(1794), 20140253.
  mla: Ocana, Sabine, et al. “Y-Linked Mendelian Inheritance of Giant and Dwarf Male
    Morphs in Shell-Brooding Cichlids.” <i>Proceedings of the Royal Society of London
    Series B Biological Sciences</i>, vol. 281, no. 1794, 20140253, The Royal Society,
    2014, doi:<a href="https://doi.org/10.1098/rspb.2014.0253">10.1098/rspb.2014.0253</a>.
  short: S. Ocana, P. Meidl, D. Bonfils, M. Taborsky, Proceedings of the Royal Society
    of London Series B Biological Sciences 281 (2014).
date_created: 2018-12-11T11:54:34Z
date_published: 2014-11-07T00:00:00Z
date_updated: 2022-06-07T09:12:32Z
day: '07'
department:
- _id: CampIT
doi: 10.1098/rspb.2014.0253
external_id:
  pmid:
  - '25232141'
intvolume: '       281'
issue: '1794'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4211437/
month: '11'
oa: 1
oa_version: Submitted Version
pmid: 1
publication: Proceedings of the Royal Society of London Series B Biological Sciences
publication_status: published
publisher: The Royal Society
publist_id: '5203'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Y-linked Mendelian inheritance of giant and dwarf male morphs in shell-brooding
  cichlids
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 281
year: '2014'
...
---
_id: '468'
abstract:
- lang: eng
  text: Invasive alien parasites and pathogens are a growing threat to biodiversity
    worldwide, which can contribute to the extinction of endemic species. On the Galápagos
    Islands, the invasive parasitic fly Philornis downsi poses a major threat to the
    endemic avifauna. Here, we investigated the influence of this parasite on the
    breeding success of two Darwin's finch species, the warbler finch (Certhidea olivacea)
    and the sympatric small tree finch (Camarhynchus parvulus), on Santa Cruz Island
    in 2010 and 2012. While the population of the small tree finch appeared to be
    stable, the warbler finch has experienced a dramatic decline in population size
    on Santa Cruz Island since 1997. We aimed to identify whether warbler finches
    are particularly vulnerable during different stages of the breeding cycle. Contrary
    to our prediction, breeding success was lower in the small tree finch than in
    the warbler finch. In both species P. downsi had a strong negative impact on breeding
    success and our data suggest that heavy rain events also lowered the fledging
    success. On the one hand parents might be less efficient in compensating their
    chicks' energy loss due to parasitism as they might be less efficient in foraging
    on days of heavy rain. On the other hand, intense rainfalls might lead to increased
    humidity and more rapid cooling of the nests. In the case of the warbler finch
    we found that the control of invasive plant species with herbicides had a significant
    additive negative impact on the breeding success. It is very likely that the availability
    of insects (i.e. food abundance) is lower in such controlled areas, as herbicide
    usage led to the removal of the entire understory. Predation seems to be a minor
    factor in brood loss.
acknowledgement: The study was funded by the University of Vienna (Focus of Excellence
  grant), the Galápagos Conservation Trust, and the Ethologische Gesellschaft e.V.
article_number: '0107518'
author:
- first_name: Arno
  full_name: Cimadom, Arno
  last_name: Cimadom
- first_name: Angel
  full_name: Ulloa, Angel
  last_name: Ulloa
- first_name: Patrick
  full_name: Meidl, Patrick
  id: 4709BCE6-F248-11E8-B48F-1D18A9856A87
  last_name: Meidl
- first_name: Markus
  full_name: Zöttl, Markus
  last_name: Zöttl
- first_name: Elisabet
  full_name: Zöttl, Elisabet
  last_name: Zöttl
- first_name: Birgit
  full_name: Fessl, Birgit
  last_name: Fessl
- first_name: Erwin
  full_name: Nemeth, Erwin
  last_name: Nemeth
- first_name: Michael
  full_name: Dvorak, Michael
  last_name: Dvorak
- first_name: Francesca
  full_name: Cunninghame, Francesca
  last_name: Cunninghame
- first_name: Sabine
  full_name: Tebbich, Sabine
  last_name: Tebbich
citation:
  ama: Cimadom A, Ulloa A, Meidl P, et al. Invasive parasites habitat change and heavy
    rainfall reduce breeding success in Darwin’s finches. <i>PLoS One</i>. 2014;9(9).
    doi:<a href="https://doi.org/10.1371/journal.pone.0107518">10.1371/journal.pone.0107518</a>
  apa: Cimadom, A., Ulloa, A., Meidl, P., Zöttl, M., Zöttl, E., Fessl, B., … Tebbich,
    S. (2014). Invasive parasites habitat change and heavy rainfall reduce breeding
    success in Darwin’s finches. <i>PLoS One</i>. Public Library of Science. <a href="https://doi.org/10.1371/journal.pone.0107518">https://doi.org/10.1371/journal.pone.0107518</a>
  chicago: Cimadom, Arno, Angel Ulloa, Patrick Meidl, Markus Zöttl, Elisabet Zöttl,
    Birgit Fessl, Erwin Nemeth, Michael Dvorak, Francesca Cunninghame, and Sabine
    Tebbich. “Invasive Parasites Habitat Change and Heavy Rainfall Reduce Breeding
    Success in Darwin’s Finches.” <i>PLoS One</i>. Public Library of Science, 2014.
    <a href="https://doi.org/10.1371/journal.pone.0107518">https://doi.org/10.1371/journal.pone.0107518</a>.
  ieee: A. Cimadom <i>et al.</i>, “Invasive parasites habitat change and heavy rainfall
    reduce breeding success in Darwin’s finches,” <i>PLoS One</i>, vol. 9, no. 9.
    Public Library of Science, 2014.
  ista: Cimadom A, Ulloa A, Meidl P, Zöttl M, Zöttl E, Fessl B, Nemeth E, Dvorak M,
    Cunninghame F, Tebbich S. 2014. Invasive parasites habitat change and heavy rainfall
    reduce breeding success in Darwin’s finches. PLoS One. 9(9), 0107518.
  mla: Cimadom, Arno, et al. “Invasive Parasites Habitat Change and Heavy Rainfall
    Reduce Breeding Success in Darwin’s Finches.” <i>PLoS One</i>, vol. 9, no. 9,
    0107518, Public Library of Science, 2014, doi:<a href="https://doi.org/10.1371/journal.pone.0107518">10.1371/journal.pone.0107518</a>.
  short: A. Cimadom, A. Ulloa, P. Meidl, M. Zöttl, E. Zöttl, B. Fessl, E. Nemeth,
    M. Dvorak, F. Cunninghame, S. Tebbich, PLoS One 9 (2014).
date_created: 2018-12-11T11:46:38Z
date_published: 2014-09-23T00:00:00Z
date_updated: 2021-01-12T08:00:48Z
day: '23'
ddc:
- '576'
department:
- _id: CampIT
doi: 10.1371/journal.pone.0107518
file:
- access_level: open_access
  checksum: b24e7518ccd41effed0d7d9e2498f67f
  content_type: application/pdf
  creator: system
  date_created: 2018-12-12T10:14:48Z
  date_updated: 2020-07-14T12:46:34Z
  file_id: '5103'
  file_name: IST-2018-954-v1+1_2014_Meidl_Invasive_parasites.PDF
  file_size: 489387
  relation: main_file
file_date_updated: 2020-07-14T12:46:34Z
has_accepted_license: '1'
intvolume: '         9'
issue: '9'
language:
- iso: eng
license: https://creativecommons.org/licenses/by/4.0/
month: '09'
oa: 1
oa_version: Published Version
publication: PLoS One
publication_status: published
publisher: Public Library of Science
publist_id: '7352'
pubrep_id: '954'
quality_controlled: '1'
scopus_import: 1
status: public
title: Invasive parasites habitat change and heavy rainfall reduce breeding success
  in Darwin's finches
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: journal_article
user_id: 4435EBFC-F248-11E8-B48F-1D18A9856A87
volume: 9
year: '2014'
...