scholarly journals COLONY SEX RATIOS VARY WITH BREEDING SYSTEM BUT NOT RELATEDNESS ASYMMETRY IN THE FACULTATIVELY POLYGYNOUS ANT PHEIDOLE PALLIDULA

Evolution ◽  
2003 ◽  
Vol 57 (6) ◽  
pp. 1336 ◽  
Author(s):  
Denis Fournier ◽  
Laurent Keller ◽  
Luc Passera ◽  
Serge Aron
Keyword(s):  
Breeding System ◽  
Sex Ratios ◽  
Pheidole Pallidula ◽  
Relatedness Asymmetry

scholarly journals COLONY SEX RATIOS IN THE FACULTATIVELY POLYGYNOUS ANT PHEIDOLE PALLIDULA: A REANALYSIS WITH NEW DATA

Evolution ◽  
2004 ◽  
Vol 58 (5) ◽  
pp. 1141 ◽  
Author(s):  
Ken R. Helms ◽  
Denis Fournier ◽  
Laurent Keller ◽  
Luc Passera ◽  
Serge Aron
Keyword(s):  
Sex Ratios ◽  
Pheidole Pallidula

Dioecy and pollen dimorphism in Vitis riparia (Vitaceae)

1985 ◽  
Vol 63 (12) ◽  
pp. 2263-2267 ◽  
Author(s):  
Paeter G. Kevan ◽  
Robert W. Longair ◽  
Randy M. Gadawski
Keyword(s):  
Breeding System ◽  
Sex Ratios ◽  
Field Observations ◽  
Southern Ontario ◽  
Vitis Riparia ◽  
Experimental Cross ◽  
Pollen Dimorphism ◽  
Inaperturate Pollen

The breeding system of Vitis riparia Michx. hitherto has not been investigated. Field observations indicated that two morphs exist, one that produces fruit, and another that does not. Through experimental cross- and self-pollinations it was found that V. riparia is functionally dioecious in southern Ontario. Further, it was found that male plants produce functional spherical tricolporate pollen, whereas female plants produce inaperturate pollen of the same diameter, 23 μm, that cannot bring about fertilization. The sex ratios found at seven locations were skewed slightly, but significantly, in favour of male plants (average 0.567). Pollination is brought about by wind, probably supplemented to a greater or lesser extent by insects which feed on the cytoplasm-filled pollen of both sexes.

Social structure and split sex ratios in the ant Pheidole pallidula

1999 ◽  
Vol 11 (3) ◽  
pp. 209-227 ◽  
Author(s):  
S. Aron ◽  
E. Campan ◽  
J.J. Boomsma ◽  
L. Passera
Keyword(s):  
Social Structure ◽  
Sex Ratios ◽  
Pheidole Pallidula

scholarly journals COLONY SEX RATIOS IN THE FACULTATIVELY POLYGYNOUS ANT PHEIDOLE PALLIDULA: A REANALYSIS WITH NEW DATA

Evolution ◽  
2004 ◽  
Vol 58 (5) ◽  
pp. 1141-1142 ◽  
Author(s):  
Ken R. Helms ◽  
Denis Fournier ◽  
Laurent Keller ◽  
Luc Passera ◽  
Serge Aron
Keyword(s):  
Sex Ratios ◽  
Pheidole Pallidula

Conservation Status and Sex Ratios of the Coahuila Box Turtle (Terrapene coahuila) in the Cuatro Ciénegas Valley of Coahuila, Mexico, 2011–2018

2020 ◽  
Vol 19 (1) ◽  
pp. 14
Author(s):  
Gamaliel Castañeda Gaytan ◽  
Ernesto Becerra-López ◽  
Sara Valenzuela-Ceballos ◽  
Miguel Borja-Jiménez ◽  
Bruno Rodríguez-López ◽  
...  
Keyword(s):  
Conservation Status ◽  
Sex Ratios ◽  
Box Turtle ◽  
Cuatro Ciénegas

The floral ecology and breeding system of Veratrum virginicum (Melanthiaceae)1

2020 ◽  
Vol 147 (3) ◽  
Author(s):  
Daniel Weiherer ◽  
Kayla Eckardt ◽  
Peter Bernhardt
Keyword(s):  
Breeding System ◽  
Floral Ecology
Sign in / Sign up

Export Citation Format

Share Document