@article{fdi:010066967,
  title = {{I}dentifying robust proxies of gonad maturation for the protandrous hermaphrodite {T}ridacna maxima ({R}oding, 1798, {B}ivalvia) from individual to population scale},
  author = {{M}enoud, {M}. and {V}an {W}ynsberge, {S}. and {L}e {M}oullac, {G}. and {L}evy, {P}. and {A}ndr{\'e}fou{\¨e}t, {S}erge and {R}emoissenet, {G}. and {G}aertner-{M}azouni, {N}abila},
  editor = {},
  language = {{ENG}},
  abstract = {{M}onitoring gonad maturation for protandrous and functional hermaphrodite species such as the giant clam {T}ridacna maxima is difficult due to the juxtaposition and relative proportion of male and female tissues in the gonad [gonadal sex ratio ({GSR})]. {H}ere, the relevance of the widely used gonadosomatic index ({GSI}) as proxy of giant clam gonad maturation is tested with a large dataset (n = 265). {G}onadosomatic index is compared with other indices, namely the proportion of the male part harboring spermatozoids, the proportion of empty oocyte follicles, the mean oocyte diameter, and the oocyte elongation. {A}t gonad scale, high index variability highlighted partial spawning. {A}t individual scale, male and female maturation proxies were contrasted, showing either asynchronous emissions of male and female gametes or contrasted spermatogenesis and oogenesis duration. {T}he {GSI} was mostly driven by the number and diameter of oocytes and therefore it is recommended here as primary proxy for female maturity. {E}xcept for the oocyte elongation, all indices were affected by the {GSR}, which ruled out drawing conclusions at population scale. {T}hese results highlight the need for maturation stage proxies that are optimized for functional hermaphrodite species.},
  keywords = {giant clam ; marine bivalve ; reproduction ; spawn ; {T}atakoto atoll ; histology ; {T}ridacna maxima ; {POLYNESIE} {FRANCAISE} ; {TUAMOTU} {GAMBIER}},
  booktitle = {},
  journal = {{J}ournal of {S}hellfish {R}esearch},
  volume = {35},
  numero = {1},
  pages = {51--61},
  ISSN = {0730-8000},
  year = {2016},
  DOI = {10.2983/035.035.0107},
  URL = {https://www.documentation.ird.fr/hor/fdi:010066967},
}