The Effect of Multiple Paternity on Genetic Diversity of Small Populations during and after Colonisation
Article - Full Text
Supplemental File 1
Supplemental File 2
Supplemental File 3
Supplemental File 4
Supplemental File 5
Supplemental File 6
Preprint Posting Date2012-11-05
Permanent link to this recordhttp://hdl.handle.net/10754/325326
MetadataShow full item record
AbstractGenetic variation within and among populations is influenced by the genetic content of the founders and the migrants following establishment. This is particularly true if populations are small, migration rate low and habitats arranged in a stepping-stone fashion. Under these circumstances the level of multiple paternity is critical since multiply mated females bring more genetic variation into founder groups than single mated females. One such example is the marine snail Littorina saxatilis that during postglacial times has invaded mainland refuge areas and thereafter small islands emerging due to isostatic uplift by occasional rafting of multiply mated females. We modelled effects of varying degrees of multiple paternity on the genetic variation of island populations colonised by the founders spreading from the mainland, by quantifying the population heterozygosity during both the transient colonisation process, and after a steady state (with migration) has been reached. During colonisation, multiple mating by 2-10 males increased the heterozygosity by 10-300% in comparison with single paternity, while in the steady state the increase was 10-50% compared with single paternity. In the steady state the increase of heterozygosity due to multiple paternity is determined by a corresponding increase in effective population size. During colonisation, by contrast, the increase in heterozygosity is larger and it cannot be explained in terms of the effective population size alone. During the steady-state phase bursts of high genetic variation spread through the system, and far from the mainland this led to short periods of high diversity separated by long periods of low diversity. The size of these fluctuations was boosted by multiple paternity. We conclude that following glacial periods of extirpation, recolonization of isolated habitats by this species has been supported by its high level of multiple paternity. 2013 Rafajlovi? et al.
CitationRafajlović M, Eriksson A, Rimark A, Hintz-Saltin S, Charrier G, et al. (2013) The Effect of Multiple Paternity on Genetic Diversity of Small Populations during and after Colonisation. PLoS ONE 8: e75587. doi:10.1371/journal.pone.0075587.
PublisherPublic Library of Science (PLoS)
PubMed Central IDPMC3810386
- Mating strategies and multiple paternity, assessed by microsatellites, of the dispersal-limited, ectoparasitic tree-hole tick, Ixodes arboricola.
- Authors: Van Oosten AR, Matthysen E, Heylen DJ
- Issue date: 2016 Aug
- High levels of multiple paternity in Littorina saxatilis: hedging the bets?
- Authors: Mäkinen T, Panova M, André C
- Issue date: 2007 Nov-Dec
- Paternity and gregariousness in the sex-changing sessile marine gastropod Crepidula convexa: comparison with other protandrous Crepidula species.
- Authors: Le Cam S, Riquet F, Pechenik JA, Viard F
- Issue date: 2014 May-Jun
- Microsatellite evidence for high frequency of multiple paternity in the marine gastropod Rapana venosa.
- Authors: Xue D, Zhang T, Liu JX
- Issue date: 2014
- Towards a model of postglacial biogeography in shallow marine species along the Patagonian Province: lessons from the limpet Nacella magellanica (Gmelin, 1791).
- Authors: González-Wevar CA, Hüne M, Cañete JI, Mansilla A, Nakano T, Poulin E
- Issue date: 2012 Aug 7
Showing items related by title, author, creator and subject.
Population genomics reveals that an anthropophilic population of Aedes aegypti mosquitoes in West Africa recently gave rise to American and Asian populations of this major disease vectorCrawford, Jacob E.; Alves, Joel M.; Palmer, William J.; Day, Jonathan P.; Sylla, Massamba; Ramasamy, Ranjan; Surendran, Sinnathamby N.; Black, William C., IV; Pain, Arnab; Jiggins, Francis M. (BMC Biology, Springer Nature, 2017-02-28) [Article]BackgroundThe mosquito Aedes aegypti is the main vector of dengue, Zika, chikungunya and yellow fever viruses. This major disease vector is thought to have arisen when the African subspecies Ae. aegypti formosus evolved from being zoophilic and living in forest habitats into a form that specialises on humans and resides near human population centres. The resulting domestic subspecies, Ae. aegypti aegypti, is found throughout the tropics and largely blood-feeds on humans.ResultsTo understand this transition, we have sequenced the exomes of mosquitoes collected from five populations from around the world. We found that Ae. aegypti specimens from an urban population in Senegal in West Africa were more closely related to populations in Mexico and Sri Lanka than they were to a nearby forest population. We estimate that the populations in Senegal and Mexico split just a few hundred years ago, and we found no evidence of Ae. aegypti aegypti mosquitoes migrating back to Africa from elsewhere in the tropics. The out-of-Africa migration was accompanied by a dramatic reduction in effective population size, resulting in a loss of genetic diversity and rare genetic variants.ConclusionsWe conclude that a domestic population of Ae. aegypti in Senegal and domestic populations on other continents are more closely related to each other than to other African populations. This suggests that an ancestral population of Ae. aegypti evolved to become a human specialist in Africa, giving rise to the subspecies Ae. aegypti aegypti. The descendants of this population are still found in West Africa today, and the rest of the world was colonised when mosquitoes from this population migrated out of Africa. This is the first report of an African population of Ae. aegypti aegypti mosquitoes that is closely related to Asian and American populations. As the two subspecies differ in their ability to vector disease, their existence side by side in West Africa may have important implications for disease transmission.
Density Estimation in Several Populations With Uncertain Population MembershipMa, Yanyuan; Hart, Jeffrey D.; Carroll, Raymond J. (Journal of the American Statistical Association, Informa UK Limited, 2011-09) [Article]We devise methods to estimate probability density functions of several populations using observations with uncertain population membership, meaning from which population an observation comes is unknown. The probability of an observation being sampled from any given population can be calculated. We develop general estimation procedures and bandwidth selection methods for our setting. We establish large-sample properties and study finite-sample performance using simulation studies. We illustrate our methods with data from a nutrition study.
Growth increments of the recent brachiopod Magellania venosa mechanically marked in Paso Comau and Comau Fjord, Chile, 2011/2012, supplement to: Baumgarten, Sebastian; Laudien, Jürgen; Jantzen, Carin; Häussermann, Verena; Försterra, Günter (2013): Population structure, growth and production of a recent brachiopod from the Chilean fjord region. Marine Ecology, 35(4), 401-413Baumgarten, Sebastian; Laudien, Jürgen; Jantzen, Carin; Häussermann, Verena; Försterra, Günter (PANGAEA - Data Publisher for Earth & Environmental Science, 2015) [Dataset]Magellania venosa, the largest recent brachiopod, occurs in clusters and banks in population densities of up to 416 ind/m**2 in Comau Fjord, Northern Chilean fjord region. Below 15 m, it co-occurs with the mytilid Aulacomya atra and it dominates the benthic community below 20 m. To determine the question of why M. venosa is a successful competitor, the in situ growth rate of the brachiopod was studied and its overall growth performance compared with that of other brachiopods and mussels. The growth in length was measured between February 2011 and March 2012 after mechanical tagging and calcein staining. Settlement and juvenile growth were determined from recruitment tiles installed in 2009 and from subsequent photocensus. Growth of M. venosa is best described by the general von Bertalanffy growth function, with a maximum shell length (Linf) of 71.53 mm and a Brody growth constant (K) of 0.336/year. The overall growth performance (OGP index = 5.1) is the highest recorded for a rynchonelliform brachiopod and in the range of that for Mytilus chilensis (4.8-5.27), but lower than that of A. atra (5.74). The maximal individual production (PInd) is 0.29 g AFDM/ind/year at 42 mm shell length and annual production ranges from 1.28 to 89.25 g AFDM/year/m**2 (1-57% of that of A. atra in the respective fjords). The high shell growth rate of M. venosa, together with its high overall growth performance may explain the locally high population density of this brachiopod in Comau Fjord. However, the production per biomass of the population (P/B-ratio) is low (0.535) and M. venosa may play only a minor role in the food chain. Settling dynamics indicates that M. venosa is a pioneer species with low juvenile mortality. The coexistence of the brachiopod and bivalve suggests that brachiopod survival is affected by neither the presence of potential brachiopod predators nor that of space competitors (i.e. mytilids).