The Rio de Ia Plata Estuary, Argentina-Uruguay
3
3
E
:r
IC.
UJ
c
0
---Maximum
Turbidity
Zone
Freshwater
Fish Fauna
••
+-Estuarine water
t Halocline
t
Estuarine/Marine
Fish Fauna
Fine Sediment Bottom
197
Fig. 13.3A-D. Spawning cycle of Micropogonias furnieri in the Rio de Ia Plata estuary
during reproductive peak (A-D modified from Macchi et al. 1996) and conceptual diagram (modified from Acha et al. 1999) with enlarged portion of salt wedge. A Spawning
females with hydrated oocytes and bottom salinity field (note coincidence between
spawning site and bottom salinity front). B Elapsed time from spawning <24 h (females
with post-ovulatory follicles day-0). C Elapsed time from spawning 24-48 h (females
with post-ovulatory follicles day- I). D Elapsed time from spawning >48 h (females with
yolked oocytes and no post-ovulatory follicles). Symbol size is proportional to percentage of females in different stages
3
3
E
:r
IC.
UJ
c
0
---Maximum
Turbidity
Zone
Freshwater
Fish Fauna
••
+-Estuarine water
t Halocline
t
Estuarine/Marine
Fish Fauna
Fine Sediment Bottom
197
Fig. 13.3A-D. Spawning cycle of Micropogonias furnieri in the Rio de Ia Plata estuary
during reproductive peak (A-D modified from Macchi et al. 1996) and conceptual diagram (modified from Acha et al. 1999) with enlarged portion of salt wedge. A Spawning
females with hydrated oocytes and bottom salinity field (note coincidence between
spawning site and bottom salinity front). B Elapsed time from spawning <24 h (females
with post-ovulatory follicles day-0). C Elapsed time from spawning 24-48 h (females
with post-ovulatory follicles day- I). D Elapsed time from spawning >48 h (females with
yolked oocytes and no post-ovulatory follicles). Symbol size is proportional to percentage of females in different stages