Adaptive Sex Allocation in a Simultaneous Hermaphrodite

Evolution ◽  
1999 ◽  
Vol 53 (5) ◽  
pp. 1599 ◽  
Author(s):  
Sandrine Trouve ◽  
Joseph Jourdane ◽  
Francois Renaud ◽  
Patrick Durand ◽  
Serge Morand
Keyword(s):  
Sex Allocation ◽  
Simultaneous Hermaphrodite

scholarly journals Different effects of mating group size as male and as female on sex allocation in a simultaneous hermaphrodite

2020 ◽  
Vol 10 (5) ◽  
pp. 2492-2498
Author(s):  
Masami M. Tamechika ◽  
Kohei Matsuno ◽  
Satoshi Wada ◽  
Yoichi Yusa
Keyword(s):  
Group Size ◽  
Sex Allocation ◽  
Simultaneous Hermaphrodite ◽  
Mating Group

scholarly journals ADAPTIVE SEX ALLOCATION IN A SIMULTANEOUS HERMAPHRODITE

Evolution ◽  
1999 ◽  
Vol 53 (5) ◽  
pp. 1599-1604 ◽  
Author(s):  
Sandrine Trouvé ◽  
Joseph Jourdane ◽  
François Renaud ◽  
Patrick Durand ◽  
Serge Morand
Keyword(s):  
Sex Allocation ◽  
Simultaneous Hermaphrodite

scholarly journals Sex allocation predicts mating rate in a simultaneous hermaphrodite

2009 ◽  
Vol 276 (1676) ◽  
pp. 4247-4253 ◽  
Author(s):  
Tim Janicke ◽  
Lukas Schärer
Keyword(s):  
Sex Allocation ◽  
Mating Behaviour ◽  
Reproductive Investment ◽  
Mating Strategy ◽  
Species Variation ◽  
Simultaneous Hermaphrodite ◽  
Female Function ◽  
Sexual Selection Theory ◽  
The Relationship ◽  
Simultaneous Hermaphrodites

Sexual selection theory for separate-sexed animals predicts that the sexes differ in the benefit they can obtain from multiple mating. Conventional sex roles assume that the relationship between the number of mates and the fitness of an individual is steeper in males compared with females. Under these conditions, males are expected to be more eager to mate, whereas females are expected to be choosier. Here we hypothesize that the sex allocation, i.e. the reproductive investment devoted to the male versus female function, can be an important predictor of the mating strategy in simultaneous hermaphrodites. We argue that within-species variation in sex allocation can cause differences in the proportional fitness gain derived through each sex function. Individuals should therefore adjust their mating strategy in a way that is more beneficial to the sex function that is relatively more pronounced. To test this, we experimentally manipulated the sex allocation in a simultaneously hermaphroditic flatworm and investigated whether this affects the mating behaviour. The results demonstrate that individuals with a more male-biased sex allocation (i.e. relatively large testes and small ovaries) are more eager to mate compared with individuals with a more female-biased sex allocation (i.e. relatively small testes and large ovaries). We argue that this pattern is comparable to conventional gender roles in separate-sexed organisms.

Intraspecific Variation in Sex Allocation in a Simultaneous Hermaphrodite: The Effect of Individual Size

Evolution ◽  
1996 ◽  
Vol 50 (2) ◽  
pp. 636 ◽  
Author(s):  
Christopher W. Petersen ◽  
Eric A. Fischer
Keyword(s):  
Intraspecific Variation ◽  
Sex Allocation ◽  
Simultaneous Hermaphrodite ◽  
Individual Size

scholarly journals Sex allocation plasticity on a transcriptome scale: Socially sensitive gene expression in a simultaneous hermaphrodite

2019 ◽  
Vol 28 (9) ◽  
pp. 2321-2341 ◽  
Author(s):  
Steven A. Ramm ◽  
Birgit Lengerer ◽  
Roberto Arbore ◽  
Robert Pjeta ◽  
Julia Wunderer ◽  
...  
Keyword(s):  
Gene Expression ◽  
Sex Allocation ◽  
Simultaneous Hermaphrodite

scholarly journals Size-dependent sex allocation in a simultaneous hermaphrodite parasite

2001 ◽  
Vol 14 (1) ◽  
pp. 55-67 ◽  
Author(s):  
L. Schärer ◽  
L. M. Karlsson ◽  
M. Christen ◽  
C. Wedekind
Keyword(s):  
Sex Allocation ◽  
Simultaneous Hermaphrodite ◽  
Size Dependent

scholarly journals PHENOTYPICALLY FLEXIBLE SEX ALLOCATION IN A SIMULTANEOUS HERMAPHRODITE

Evolution ◽  
2007 ◽  
Vol 61 (1) ◽  
pp. 216-222 ◽  
Author(s):  
Verena S. Brauer ◽  
Lukas Schärer ◽  
Nico K. Michiels
Keyword(s):  
Sex Allocation ◽  
Simultaneous Hermaphrodite

scholarly journals Phenotypically plastic adjustment of sex allocation in a simultaneous hermaphrodite

2003 ◽  
Vol 270 (1518) ◽  
pp. 935-941 ◽  
Author(s):  
Lukas Schärer ◽  
Peter Ladurner
Keyword(s):  
Sex Allocation ◽  
Simultaneous Hermaphrodite

scholarly journals INTRASPECIFIC VARIATION IN SEX ALLOCATION IN A SIMULTANEOUS HERMAPHRODITE: THE EFFECT OF INDIVIDUAL SIZE

Evolution ◽  
1996 ◽  
Vol 50 (2) ◽  
pp. 636-645 ◽  
Author(s):  
Christopher W. Petersen ◽  
Eric A. Fischer
Keyword(s):  
Intraspecific Variation ◽  
Sex Allocation ◽  
Simultaneous Hermaphrodite ◽  
Individual Size
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