---
_id: '14850'
abstract:
- lang: eng
text: Elaborate sexual signals are thought to have evolved and be maintained to
serve as honest indicators of signaller quality. One measure of quality is health,
which can be affected by parasite infection. Cnemaspis mysoriensis is a diurnal
gecko that is often infested with ectoparasites in the wild, and males of this
species express visual (coloured gular patches) and chemical (femoral gland secretions)
traits that receivers could assess during social interactions. In this paper,
we tested whether ectoparasites affect individual health, and whether signal quality
is an indicator of ectoparasite levels. In wild lizards, we found that ectoparasite
level was negatively correlated with body condition in both sexes. Moreover, some
characteristics of both visual and chemical traits in males were strongly associated
with ectoparasite levels. Specifically, males with higher ectoparasite levels
had yellow gular patches with lower brightness and chroma, and chemical secretions
with a lower proportion of aromatic compounds. We then determined whether ectoparasite
levels in males influence female behaviour. Using sequential choice trials, wherein
females were provided with either the visual or the chemical signals of wild-caught
males that varied in ectoparasite level, we found that only chemical secretions
evoked an elevated female response towards less parasitised males. Simultaneous
choice trials in which females were exposed to the chemical secretions from males
that varied in parasite level further confirmed a preference for males with lower
parasites loads. Overall, we find that although health (body condition) or ectoparasite
load can be honestly advertised through multiple modalities, the parasite-mediated
female response is exclusively driven by chemical signals.
acknowledgement: "We thank Anuradha Batabyal and Shakilur Kabir for scientific discussions,
and help with sampling and colour analyses. We thank Muralidhar and the central
LCMS facility of the IISc for their technical support with the GCMS.\r\nResearch
funding was provided by the Department of Science and Technology Fund for Improvement
of S&T Infrastructure (DST-FIST), the Department of Biotechnology-Indian Institute
of Science (DBT-IISc) partnership program and a Science and Engineering Research
Board (SERB) grant to M.T. (EMR/2017/002228). Open Access funding provided by Indian
Institute of Science. Deposited in PMC for immediate release."
article_number: jeb246217
article_processing_charge: Yes (via OA deal)
article_type: original
author:
- first_name: Arka
full_name: Pal, Arka
id: 6AAB2240-CA9A-11E9-9C1A-D9D1E5697425
last_name: Pal
orcid: 0000-0002-4530-8469
- first_name: Mihir
full_name: Joshi, Mihir
last_name: Joshi
- first_name: Maria
full_name: Thaker, Maria
last_name: Thaker
citation:
ama: Pal A, Joshi M, Thaker M. Too much information? Males convey parasite levels
using more signal modalities than females utilise. Journal of Experimental
Biology. 2024;227(1). doi:10.1242/jeb.246217
apa: Pal, A., Joshi, M., & Thaker, M. (2024). Too much information? Males convey
parasite levels using more signal modalities than females utilise. Journal
of Experimental Biology. The Company of Biologists. https://doi.org/10.1242/jeb.246217
chicago: Pal, Arka, Mihir Joshi, and Maria Thaker. “Too Much Information? Males
Convey Parasite Levels Using More Signal Modalities than Females Utilise.” Journal
of Experimental Biology. The Company of Biologists, 2024. https://doi.org/10.1242/jeb.246217.
ieee: A. Pal, M. Joshi, and M. Thaker, “Too much information? Males convey parasite
levels using more signal modalities than females utilise,” Journal of Experimental
Biology, vol. 227, no. 1. The Company of Biologists, 2024.
ista: Pal A, Joshi M, Thaker M. 2024. Too much information? Males convey parasite
levels using more signal modalities than females utilise. Journal of Experimental
Biology. 227(1), jeb246217.
mla: Pal, Arka, et al. “Too Much Information? Males Convey Parasite Levels Using
More Signal Modalities than Females Utilise.” Journal of Experimental Biology,
vol. 227, no. 1, jeb246217, The Company of Biologists, 2024, doi:10.1242/jeb.246217.
short: A. Pal, M. Joshi, M. Thaker, Journal of Experimental Biology 227 (2024).
date_created: 2024-01-22T08:14:49Z
date_published: 2024-01-10T00:00:00Z
date_updated: 2024-01-23T12:13:08Z
day: '10'
ddc:
- '570'
department:
- _id: NiBa
doi: 10.1242/jeb.246217
external_id:
pmid:
- '38054353'
file:
- access_level: open_access
checksum: 136325372f6f45abaa62a71e2d23bfb6
content_type: application/pdf
creator: dernst
date_created: 2024-01-23T12:08:24Z
date_updated: 2024-01-23T12:08:24Z
file_id: '14877'
file_name: 2024_JourExperimBiology_Pal.pdf
file_size: 594128
relation: main_file
success: 1
file_date_updated: 2024-01-23T12:08:24Z
has_accepted_license: '1'
intvolume: ' 227'
issue: '1'
keyword:
- Insect Science
- Molecular Biology
- Animal Science and Zoology
- Aquatic Science
- Physiology
- Ecology
- Evolution
- Behavior and Systematics
language:
- iso: eng
license: https://creativecommons.org/licenses/by/4.0/
month: '01'
oa: 1
oa_version: Published Version
pmid: 1
publication: Journal of Experimental Biology
publication_identifier:
eissn:
- 0022-0949
issn:
- 1477-9145
publication_status: published
publisher: The Company of Biologists
quality_controlled: '1'
related_material:
link:
- relation: software
url: https://github.com/arka-pal/Cnemaspis-SexualSignaling
status: public
title: Too much information? Males convey parasite levels using more signal modalities
than females utilise
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: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 227
year: '2024'
...
---
_id: '12159'
abstract:
- lang: eng
text: The term “haplotype block” is commonly used in the developing field of haplotype-based
inference methods. We argue that the term should be defined based on the structure
of the Ancestral Recombination Graph (ARG), which contains complete information
on the ancestry of a sample. We use simulated examples to demonstrate key features
of the relationship between haplotype blocks and ancestral structure, emphasizing
the stochasticity of the processes that generate them. Even the simplest cases
of neutrality or of a “hard” selective sweep produce a rich structure, often missed
by commonly used statistics. We highlight a number of novel methods for inferring
haplotype structure, based on the full ARG, or on a sequence of trees, and illustrate
how they can be used to define haplotype blocks using an empirical data set. While
the advent of new, computationally efficient methods makes it possible to apply
these concepts broadly, they (and additional new methods) could benefit from adding
features to explore haplotype blocks, as we define them. Understanding and applying
the concept of the haplotype block will be essential to fully exploit long and
linked-read sequencing technologies.
acknowledgement: 'We thank the Barton group for useful discussion and feedback during
the writing of this article. Comments from Roger Butlin, Molly Schumer''s Group,
the tskit development team, editors and three reviewers greatly improved the manuscript.
Funding was provided by SCAS (Natural Sciences Programme, Knut and Alice Wallenberg
Foundation), an FWF Wittgenstein grant (PT1001Z211), an FWF standalone grant (grant
P 32166), and an ERC Advanced Grant. YFC was supported by the Max Planck Society
and an ERC Proof of Concept Grant #101069216 (HAPLOTAGGING).'
article_processing_charge: Yes (via OA deal)
article_type: original
author:
- first_name: Daria
full_name: Shipilina, Daria
id: 428A94B0-F248-11E8-B48F-1D18A9856A87
last_name: Shipilina
orcid: 0000-0002-1145-9226
- first_name: Arka
full_name: Pal, Arka
id: 6AAB2240-CA9A-11E9-9C1A-D9D1E5697425
last_name: Pal
orcid: 0000-0002-4530-8469
- first_name: Sean
full_name: Stankowski, Sean
id: 43161670-5719-11EA-8025-FABC3DDC885E
last_name: Stankowski
- first_name: Yingguang Frank
full_name: Chan, Yingguang Frank
last_name: Chan
- 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: Shipilina D, Pal A, Stankowski S, Chan YF, Barton NH. On the origin and structure
of haplotype blocks. Molecular Ecology. 2023;32(6):1441-1457. doi:10.1111/mec.16793
apa: Shipilina, D., Pal, A., Stankowski, S., Chan, Y. F., & Barton, N. H. (2023).
On the origin and structure of haplotype blocks. Molecular Ecology. Wiley.
https://doi.org/10.1111/mec.16793
chicago: Shipilina, Daria, Arka Pal, Sean Stankowski, Yingguang Frank Chan, and
Nicholas H Barton. “On the Origin and Structure of Haplotype Blocks.” Molecular
Ecology. Wiley, 2023. https://doi.org/10.1111/mec.16793.
ieee: D. Shipilina, A. Pal, S. Stankowski, Y. F. Chan, and N. H. Barton, “On the
origin and structure of haplotype blocks,” Molecular Ecology, vol. 32,
no. 6. Wiley, pp. 1441–1457, 2023.
ista: Shipilina D, Pal A, Stankowski S, Chan YF, Barton NH. 2023. On the origin
and structure of haplotype blocks. Molecular Ecology. 32(6), 1441–1457.
mla: Shipilina, Daria, et al. “On the Origin and Structure of Haplotype Blocks.”
Molecular Ecology, vol. 32, no. 6, Wiley, 2023, pp. 1441–57, doi:10.1111/mec.16793.
short: D. Shipilina, A. Pal, S. Stankowski, Y.F. Chan, N.H. Barton, Molecular Ecology
32 (2023) 1441–1457.
date_created: 2023-01-12T12:09:17Z
date_published: 2023-03-01T00:00:00Z
date_updated: 2023-08-16T08:18:47Z
day: '01'
ddc:
- '570'
department:
- _id: NiBa
doi: 10.1111/mec.16793
external_id:
isi:
- '000900762000001'
pmid:
- '36433653'
file:
- access_level: open_access
checksum: b10e0f8fa3dc4d72aaf77a557200978a
content_type: application/pdf
creator: dernst
date_created: 2023-08-16T08:15:41Z
date_updated: 2023-08-16T08:15:41Z
file_id: '14062'
file_name: 2023_MolecularEcology_Shipilina.pdf
file_size: 7144607
relation: main_file
success: 1
file_date_updated: 2023-08-16T08:15:41Z
has_accepted_license: '1'
intvolume: ' 32'
isi: 1
issue: '6'
keyword:
- Genetics
- Ecology
- Evolution
- Behavior and Systematics
language:
- iso: eng
month: '03'
oa: 1
oa_version: Published Version
page: 1441-1457
pmid: 1
project:
- _id: 05959E1C-7A3F-11EA-A408-12923DDC885E
grant_number: P32166
name: The maintenance of alternative adaptive peaks in snapdragons
- _id: 25F42A32-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: Z211
name: The Wittgenstein Prize
- _id: bd6958e0-d553-11ed-ba76-86eba6a76c00
grant_number: '101055327'
name: Understanding the evolution of continuous genomes
publication: Molecular Ecology
publication_identifier:
eissn:
- 1365-294X
issn:
- 0962-1083
publication_status: published
publisher: Wiley
quality_controlled: '1'
scopus_import: '1'
status: public
title: On the origin and structure of haplotype blocks
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: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 32
year: '2023'
...
---
_id: '1513'
abstract:
- lang: eng
text: "Insects of the order Hemiptera (true bugs) use a wide range of mechanisms
of sex determination, including genetic sex determination, paternal genome elimination,
and haplodiploidy. Genetic sex determination, the prevalent mode, is generally
controlled by a pair of XY sex chromosomes or by an XX/X0 system, but different
configurations that include additional sex chromosomes are also present. Although
this diversity of sex determining systems has been extensively studied at the
cytogenetic level, only the X chromosome of the model pea aphid Acyrthosiphon
pisum has been analyzed at the genomic level, and little is known about X chromosome
biology in the rest of the order.\r\n\r\nIn this study, we take advantage of published
DNA- and RNA-seq data from three additional Hemiptera species to perform a comparative
analysis of the gene content and expression of the X chromosome throughout this
clade. We find that, despite showing evidence of dosage compensation, the X chromosomes
of these species show female-biased expression, and a deficit of male-biased genes,
in direct contrast to the pea aphid X. We further detect an excess of shared gene
content between these very distant species, suggesting that despite the diversity
of sex determining systems, the same chromosomal element is used as the X throughout
a large portion of the order. "
article_processing_charge: No
author:
- first_name: Arka
full_name: Pal, Arka
id: 6AAB2240-CA9A-11E9-9C1A-D9D1E5697425
last_name: Pal
- first_name: Beatriz
full_name: Vicoso, Beatriz
id: 49E1C5C6-F248-11E8-B48F-1D18A9856A87
last_name: Vicoso
orcid: 0000-0002-4579-8306
citation:
ama: 'Pal A, Vicoso B. The X chromosome of hemipteran insects: Conservation, dosage
compensation and sex-biased expression. Genome Biology and Evolution. 2015;7(12):3259-3268.
doi:10.1093/gbe/evv215'
apa: 'Pal, A., & Vicoso, B. (2015). The X chromosome of hemipteran insects:
Conservation, dosage compensation and sex-biased expression. Genome Biology
and Evolution. Oxford University Press. https://doi.org/10.1093/gbe/evv215'
chicago: 'Pal, Arka, and Beatriz Vicoso. “The X Chromosome of Hemipteran Insects:
Conservation, Dosage Compensation and Sex-Biased Expression.” Genome Biology
and Evolution. Oxford University Press, 2015. https://doi.org/10.1093/gbe/evv215.'
ieee: 'A. Pal and B. Vicoso, “The X chromosome of hemipteran insects: Conservation,
dosage compensation and sex-biased expression,” Genome Biology and Evolution,
vol. 7, no. 12. Oxford University Press, pp. 3259–3268, 2015.'
ista: 'Pal A, Vicoso B. 2015. The X chromosome of hemipteran insects: Conservation,
dosage compensation and sex-biased expression. Genome Biology and Evolution. 7(12),
3259–3268.'
mla: 'Pal, Arka, and Beatriz Vicoso. “The X Chromosome of Hemipteran Insects: Conservation,
Dosage Compensation and Sex-Biased Expression.” Genome Biology and Evolution,
vol. 7, no. 12, Oxford University Press, 2015, pp. 3259–68, doi:10.1093/gbe/evv215.'
short: A. Pal, B. Vicoso, Genome Biology and Evolution 7 (2015) 3259–3268.
date_created: 2018-12-11T11:52:27Z
date_published: 2015-12-01T00:00:00Z
date_updated: 2021-01-12T06:51:18Z
day: '01'
ddc:
- '570'
department:
- _id: BeVi
doi: 10.1093/gbe/evv215
ec_funded: 1
file:
- access_level: open_access
checksum: 2b56b8c2e2a1d4cc3c9cb8daba26dd9b
content_type: application/pdf
creator: system
date_created: 2018-12-12T10:17:29Z
date_updated: 2020-07-14T12:45:00Z
file_id: '5284'
file_name: IST-2016-496-v1+1_Genome_Biol_Evol-2015-Pal-3259-68.pdf
file_size: 858027
relation: main_file
file_date_updated: 2020-07-14T12:45:00Z
has_accepted_license: '1'
intvolume: ' 7'
issue: '12'
language:
- iso: eng
month: '12'
oa: 1
oa_version: Published Version
page: 3259 - 3268
project:
- _id: 25681D80-B435-11E9-9278-68D0E5697425
call_identifier: FP7
grant_number: '291734'
name: International IST Postdoc Fellowship Programme
publication: Genome Biology and Evolution
publication_status: published
publisher: Oxford University Press
publist_id: '5664'
pubrep_id: '496'
quality_controlled: '1'
scopus_import: 1
status: public
title: 'The X chromosome of hemipteran insects: Conservation, dosage compensation
and sex-biased expression'
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: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87
volume: 7
year: '2015'
...