9 research outputs found
Promiscuity and high level of multiple paternity in common wall lizards (Podarcis muralis): data from microsatellite markers
Little is known about themating system of the common wall lizard Podarcis muralis. Behavioural and observational data have demonstrated that females frequently mate with multiple males. However, the possible occurrence of multiple paternity has never been investigated. By using microsatellite paternity analysis in a wild population, we document this species indeed mate promiscuously and these matings resulted in multiple paternity in at least 87% of the clutches examined. [Authors]]]>
Lizards ; Sexual Behavior, Animal ; Microsatellite Repeats
eng
oai:serval.unil.ch:BIB_17EAFC1A4DE4
2022-05-07T01:11:25Z
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https://serval.unil.ch/notice/serval:BIB_17EAFC1A4DE4
Encapsulation of neurotrophic factor-releasing cells for the treatment of neurodegenerative diseases.
info:doi:10.3233/RNN-1995-81215
info:eu-repo/semantics/altIdentifier/doi/10.3233/RNN-1995-81215
info:eu-repo/semantics/altIdentifier/pmid/21551809
Aebischer, P.
Tan, S.A.
Déglon, N.
Heyd, B.
Zurn, A.
Baetge, E.
Sagot, Y.
Kato, A.
info:eu-repo/semantics/article
article
1995
Restorative Neurology and Neuroscience, vol. 8, no. 1, pp. 65-66
info:eu-repo/semantics/altIdentifier/pissn/0922-6028
urn:issn:0922-6028
eng
oai:serval.unil.ch:BIB_17EB1DA9D7D0
2022-05-07T01:11:25Z
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https://serval.unil.ch/notice/serval:BIB_17EB1DA9D7D0
De la représentation des assurés devant le tribunal arbitral des assurances institué par l'article 89 LAMal
Duc, J.-L.
info:eu-repo/semantics/article
article
2011
Pratique juridique actuelle (AJP/PJA), vol. 20, no. 1, pp. 85-89
info:eu-repo/semantics/altIdentifier/pissn/1660-3362
fre
oai:serval.unil.ch:BIB_17EBAE571092
2022-05-07T01:11:25Z
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https://serval.unil.ch/notice/serval:BIB_17EBAE571092
Relations between bone densitometry of the forearm and quantitative ultrasound of the calcaneus in elderly women
Krieg, M.A.
Bovard, E.
Cornuz, J.
Häuselmann, H.J.
Burckhardt, P.
info:eu-repo/semantics/conferenceObject
inproceedings
1998
2nd Joint Meeting of the American Society for Bone and Mineral Research and the International Bone and Mineral Society, vol. 23, pp. F476
info:eu-repo/semantics/altIdentifier/isbn/8756-3282
eng
oai:serval.unil.ch:BIB_17EC19A8E9D8
2022-05-07T01:11:25Z
urnserval
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https://serval.unil.ch/notice/serval:BIB_17EC19A8E9D8
Culture de la performance et abus sexuels dans le sport
Ohl, Fabien
Schoch, Lucie
info:eu-repo/semantics/article
article
2020-02-05
Le Temps
fre
https://serval.unil.ch/resource/serval:BIB_17EC19A8E9D8.P001/REF.pdf
http://nbn-resolving.org/urn/resolver.pl?urn=urn:nbn:ch:serval-BIB_17EC19A8E9D88
info:eu-repo/semantics/altIdentifier/urn/urn:nbn:ch:serval-BIB_17EC19A8E9D88
info:eu-repo/semantics/submittedVersion
info:eu-repo/semantics/restrictedAccess
Restricted: indefinite embargo
Copying allowed only for non-profit organizations
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application/pdf
oai:serval.unil.ch:BIB_17ED39C35D5A
2022-05-07T01:11:25Z
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https://serval.unil.ch/notice/serval:BIB_17ED39C35D5A
Lectures et plaisirs : pour une reconceptualisation des modes et des types de lecture littéraire
info:doi:10.4000/edl.610
info:eu-repo/semantics/altIdentifier/doi/10.4000/edl.610
http://www.unil.ch/edl/fr/home.html
Bemporad, C.
info:eu-repo/semantics/article
article
2014
Etudes de Lettres. Revue de la Faculté des Lettres de l'Université de Lausanne, no. 1, pp. 65-83
info:eu-repo/semantics/altIdentifier/pissn/2296-5084
fre
X2074055640/507
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2022-05-11T12:07:00Z
http://serval.unil.ch/oaiprovider/
oai:serval.unil.ch:BIB_17ED46F3E2BE
2022-05-07T01:11:25Z
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https://serval.unil.ch/notice/serval:BIB_17ED46F3E2BE
Stapled Porcine Pericardium Displays Lower Infectivity In Vitro Than Native and Sutured Porcine Pericardium.
info:doi:10.1016/j.jss.2021.11.013
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jss.2021.11.013
info:eu-repo/semantics/altIdentifier/pmid/34973547
Del Tatto, B.
Le Roy, D.
Lambelet, M.
Corpataux, J.M.
Chakfé, N.
Giulieri, S.
Allagnat, F.
Roger, T.
Saucy, F.
info:eu-repo/semantics/article
article
2022-04
The Journal of surgical research, vol. 272, pp. 132-138
info:eu-repo/semantics/altIdentifier/eissn/1095-8673
urn:issn:0022-4804
<![CDATA[Biological xenografts using tubulized porcine pericardium are an alternative to replace infected prosthetic graft. We recently reported an innovative technique using a stapled porcine pericardial bioconduit for immediate vascular reconstruction in emergency. The objective of this study is to compare the growth and adherence to grafts of bacteria and yeast incubated with stapled porcine pericardium, sutured or naked pericardium.
One square centimeter of porcine pericardial patches, with or without staples or sutures, was incubated with 10 <sup>5</sup> colony forming units of Escherichia coli, Staphylococcus aureus, Staphylococcus epidermidis, and Candida albicans for 1, 6, and 24 h. The medium was collected to quantify planktonic microorganisms, while grafts were sonicated to quantify adherent microorganisms. Dacron and Dacron Silver were analyzed in parallel as synthetic reference prostheses.
Stapled porcine pericardium reduced the growth and the adherence of E coli (2- to 30-fold; P < 0.0005), S aureus (11- to 1000-fold; P < 0.0006), S epidermidis (>500-fold; P < 0.0001), and C albicans (12- to 50-fold; P < 0.0001) when compared to medium alone (growth) and pericardium or Dacron (adherence). Native and sutured porcine pericardium interfered with the growth and the adherence of E coli and C albicans, and Dacron with that of S epidermidis. As expected, Dacron Silver was robustly bactericidal.
Stapled porcine pericardium exhibited a lower susceptibility to infection by bacteria and yeasts in vitro when compared to the native and sutured porcine pericardium. Stapled porcine pericardium might be a good option for rapid vascular grafting without increasing infectivity
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Molecular markers reveal reproductive strategies of non-pollinating fig wasps
1. Fig wasps have proved extremely useful study organisms for testing how reproductive decisions evolve in response to population structure. In particular, they provide textbook examples of how natural selection can favour female-biased offspring sex ratios, lethal combat for mates, and dimorphic mating strategies.
2. However, previous work has been challenged, because supposed single species have been discovered to be a number of cryptic species. Consequently, new studies are required to determine population structure and reproductive decisions of individuals unambiguously assigned to species.
3. We used microsatellites to determine species identity and reproductive patterns in three non-pollinating Sycoscapter species associated with the same fig species. Foundress number was typically 1-5 and most figs contained more than one Sycoscapter species. Foundresses produced very small clutches of about 1-4 offspring, but one foundress may lay eggs in several figs.
4. Overall, the data show poor match to theoretical predictions of solitary male clutches and gregarious clutches with (n-1) females. However, sex ratios are male-biased in solitary clutches and female-biased in gregarious ones.
5. At the brood level (all wasps in a fig), a decrease in sex ratio with increasing brood size is only significant in one species, and sex ratio is unrelated to foundress number. In addition, figs with more foundresses contain more wasp offspring.
6. Finally, 10-22% of females develop in patches without males. As males are wingless, these females disperse unmated and are constrained to produce only sons from unfertilized eggs
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Cryptic diversity in a fig wasp community-morphologically differentiated species are sympatric but cryptic species are parapatric
A key debate in ecology centres on the relative importance of niche and neutral processes in determining patterns of community assembly with particular focus on whether ecologically similar species with similar functional traits are able to coexist. Meanwhile, molecular studies are increasingly revealing morphologically indistinguishable cryptic species with presumably similar ecological roles. Determining the geographic distribution of such cryptic species provides opportunities to contrast predictions of niche versus neutral models. Discovery of sympatric cryptic species increases alpha diversity and supports neutral models, while documentation of allopatric/parapatric cryptic species increases beta diversity and supports niche models. We tested these predictions using morphological and molecular data, coupled with environmental niche modelling analyses, of a fig wasp community along its 2700 km latitudinal range. Molecular methods increased previous species diversity estimates from eight to eleven species, revealing morphologically cryptic species in each of the four wasp genera studied. Congeneric species pairs that were differentiated by a key morphological functional trait (ovipositor length) coexisted sympatrically over large areas. In contrast, morphologically similar species, with similar ovipositor lengths, typically showed parapatric ranges with very little overlap. Despite parapatric ranges, environmental niche models of cryptic congeneric pairs indicate large regions of potential sympatry, suggesting that competitive process are important in determining the distributions of ecologically similar species. Niche processes appear to structure this insect community and cryptic diversity may typically contribute mostly to beta rather than alpha diversity
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Fighting in fig wasps: do males avoid killing brothers or do they never meet them?
1. In many fig wasp species, armoured wingless males regularly engage in lethal fights for access to females inside figs, which act as discrete mating patches.
2. Kin selection generally opposes killing brothers, because their reproductive success provides indirect genetic benefits (inclusive fitness). However, siblicide may be avoided if (i) brothers do not occur in the same figs, or (ii) males avoid fighting brothers in the same fig. Alternatively, (iii) siblicide may occur because intense mate competition between brothers at the local scale overcomes kin selection effects, or (iv) males do not recognise kin.
3. A fig may also contain wasps from other closely related species and it is not known if males also fight with these individuals.
4. Nine microsatellite loci were used in the first genetic analysis of fighting in fig wasps. We assigned species and sibling identities to males and tested alternative fighting scenarios for three Sycoscapter wasp species in figs of Ficus rubiginosa.
5. Approximately 60% of figs contained males frommore than one Sycoscapter species and approximately 80% of fights were between conspecifics, but a surprising 20% were between heterospecific males.
6.Within species, fewfigs contained brothers, suggesting that females typically lay one son per fig. Overall, most males do not compete with brothers and all fights observed were between unrelated males.
Key words:Competition, fighting, genetics, kin selection, microsatellites, relatedness