FN Archimer Export Format
PT J
TI The Size Advantage Model of Sex Allocation in the Protandrous Sex-Changer Crepidula fornicata: Role of the Mating System, Sperm Storage, and Male Mobility
BT 
AF BROQUET, Thomas
   BARRANGER, Audrey
   BILLARD, Emmanuelle
   BESTIN, Anastasia
   BERGER, Remy
   HONNAERT, Gaelle
   VIARD, Frederique
AS 1:1,2;2:1,2;3:1,2;4:1,2;5:1,2;6:1,2;7:1,2;
FF 1:;2:;3:;4:;5:;6:;7:;
C1 CNRS, Team Div & Connect Coastal Marine Landscapes, Stn Biol Roscoff, F-29680 Roscoff, France.
   Univ Paris 06, Sorbonne Univ, Unite Mixte Rech 7144, Stn Biol Roscoff, F-29680 Roscoff, France.
C2 CNRS, FRANCE
   UNIV PARIS 06, FRANCE
IF 3.148
TC 16
UR https://archimer.ifremer.fr/doc/00809/92100/98055.pdf
LA English
DT Article
DE ;sequential hermaphrodite rotandry;reproductive success;gregarious behavior;mollusk
AB Sequential hermaphroditism is adaptive when the reproductive value of an individual varies with size or age, and this relationship differs between males and females. In this case, theory shows that the lifetime reproductive output of an individual is increased by changing sex (a hypothesis referred to as the size-advantage model). Sex-linked differences in size-fitness curves can stem from differential costs of reproduction, the mating system, and differences in growth and mortality between sexes. Detailed empirical data is required to disentangle the relative roles of each of these factors within the theory. Quantitative data are also needed to explore the role of sperm storage, which has not yet been considered with sequential hermaphrodites. Using experimental rearing and paternity assignment, we report relationships between size and reproductive success of Crepidula fornicata, a protandrous (male-first) gastropod. Male reproductive success increased with size due to the polygamous system and stacking behavior of the species, but females nonetheless had greater reproductive success than males of the same size, in agreement with the size-advantage theory. Sperm storage appeared to be a critical determinant of success for both sexes, and modeling the effect of sperm storage showed that it could potentially accelerate sex change in protandrous species. 
PY 2015
PD SEP
SO American Naturalist
SN 0003-0147
PU Univ Chicago Press
VL 186
IS 3
UT 000361011800009
BP 404
EP 420
DI 10.1086/682361
ID 92100
ER

EF