scholarly journals High selfing rate, limited pollen dispersal and inbreeding depression in the emblematic African rain forest tree Baillonella toxisperma – Management implications

2016 ◽  
Vol 379 ◽  
pp. 20-29 ◽  
Author(s):  
J. Duminil ◽  
D.T. Mendene Abessolo ◽  
D. Ndiade Bourobou ◽  
J.-L. Doucet ◽  
J. Loo ◽  
...  
2017 ◽  
Vol 26 (19) ◽  
pp. 5279-5291 ◽  
Author(s):  
Franck Kameni Monthe ◽  
Olivier J. Hardy ◽  
Jean-Louis Doucet ◽  
Judy Loo ◽  
Jérôme Duminil

Ecology ◽  
1995 ◽  
Vol 77 (2) ◽  
pp. 568-580 ◽  
Author(s):  
David W. Lee ◽  
Krishnapillay Baskaran ◽  
Marzalina Mansor ◽  
Haris Mohamad ◽  
Son Kheong Yap

1999 ◽  
Vol 74 (1) ◽  
pp. 31-42 ◽  
Author(s):  
J. RONFORT

Single-locus equilibrium frequencies of a partially recessive deleterious mutation under the mutation–selection balance model are derived for partially selfing autotetraploid populations. Assuming multiplicative fitness interactions among loci, approximate solutions for the mean fitness and inbreeding depression values are also derived for the multiple locus case and compared with expectations for the diploid model. As in diploids, purging of deleterious mutations through consanguineous matings occurs in autotetraploid populations, i.e. the equilibrium mutation load is a decreasing function of the selfing rate. However, the variation of inbreeding depression with the selfing rate depends strongly on the dominance coefficients associated with the three heterozygous genotypes. Inbreeding depression can either increase or decrease with the selfing rate, and does not always vary monotonically. Expected issues for the evolution of the selfing rate consequently differ depending on the dominance coefficients. In some cases, expectations for the evolution of the selfing rate resemble expectations in diploids; but particular sets of dominance coefficients can be found that lead to either complete selfing or intermediate selfing rates as unique evolutionary stable state.


2003 ◽  
Vol 162 (6) ◽  
pp. 691-703 ◽  
Author(s):  
Christopher W. Dick ◽  
Kobinah Abdul‐Salim ◽  
Eldredge Bermingham

1980 ◽  
Vol 28 (2) ◽  
pp. 223 ◽  
Author(s):  
SD Hopper

The identity, abundance and foraging behaviour of pollinators of the self-compatible, mass-flowering Syzygium tierneyanum were investigated. Forty-five species of nectarivorous animals were recorded. Diurnal visitors included seven bird; nine butterfly. four moth (including two hawkmoth), two bee, two ant, one wasp, three blowfly, one fruit fly, two beetle and one weevil species. while nocturnal visitors included one bat and 12 moth (including three hawkmoth) species. Floral dimensions were such that only the vertebrate and larger insect species regularly contacted anthers and stigmas while foraging. Of these groups the feral honey bee (Apis mellifera) was the most common flowet visitor. Honeyeaters and hawkmoths appeared to be the most important native pollinators; they were abundant in the study area and visited numerous flowers (50-250) in quick succession (1-3 s per flower) on each foraging bout. The only major differences in foraging times observed in the pollinator array were between diurnal, diurnal and crepuscular, and nocturnal floral visitors. Spatial partitioning of the nectar resource was limited to one instance of territoriality involving a Macleay's honeyeater (Meliphaga rnacleayana) on a densely flowering branch prior to peak blooming time, occasional aggressive chases by honeyeaters, and a division of foraging modes into rapid, erratic flights of 0.5– 4 m between flowers (hawkmoths) as against nearest-flower movements (all other groups). This lack of major spatial partitioning may have been due to the mass flowering of S. tierneyanum and the resultant superabundance of nectar. The vast majority (c. 99.95%) of interflower movements observed in foraging bouts of birds (and of hawkmoths) were within the same plant. This suggests that most seeds of S. tierneyanum may be derived from self-pollination.


PLoS ONE ◽  
2017 ◽  
Vol 12 (11) ◽  
pp. e0186663 ◽  
Author(s):  
Maurizio Rossetto ◽  
Emilie J. Ens ◽  
Thijs Honings ◽  
Peter D. Wilson ◽  
Jia-Yee S. Yap ◽  
...  

2004 ◽  
Vol 92 (4) ◽  
pp. 609-623 ◽  
Author(s):  
PETER A. PALMIOTTO ◽  
STUART J. DAVIES ◽  
KRISTIINA A. VOGT ◽  
MARK S. ASHTON ◽  
DANIEL J. VOGT ◽  
...  

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