Sightening and mating periods in differents species...

Aeg-Cera

Cera-Chro

Colpo-Doris

Durvi-Glau

Glosso-Hyda

Hypse-Noto

Nou-Phy

Phy-Risb

Robo-Umbra

Symbols used in the summary tables

- SB, PB, CD corresponded to Sully Bachel, Philibert Bidgrain and Christophe Cadet observations in Reunion Island during 2010, 2011....

- Number of specimens observed :
             - The number is the number of isolated individuals observed
             - a corresponds to a population between 5 and 10 specimens
             - b corresponds to a population between 10 and 100 specimens
             - c corresponds to a population between 100 and 1000 specimens
             - d corresponds to a population of more than 1000 specimens

- Spawns and matings events :
             - The number is the number of observed behaviors
             - " m " is a behavior observed in a small population
             - " M " is a behavior observed in a large population, such an entire reef ...

Phyllidiopsis cardinalis

 
Jan
Feb
March
April
May
June
Jully
August
Sept
Oct
Nov
Dec
SB PB and
CD 2010 		Less 1m
 
 
1 
 
1 
 
 
 
 
1 
 
 
Fore reef zone
 
 
3 
 
 
 
 
 
1 
1 
3 
2 
SB PB and
CD 2011 		Less 1m
 
 
 
 
 
 
 
 
 
 
 
 
Fore reef zone
4 
1 
3 
2 
4 
 
 
 
1 
 
1 
2 
Others obs Less 1m
 
 
 
 
 
 
 
 
 
 
 
 
Fore reef zone
 
 
1 
 
1 
2 
1 
2 
1 
4 
 
3 
TOTAL : 
4 
1 
8 
2 
6 
2 
1 
2 
3 
6 
4 
7 
Spawn :  
 
 
 
 
 
 
 
 
 
 
 
 
Mating behavior : 
 
 
 
 
 
 
 
 
 
 
 
 

Remarks :
         - Seems observed preferentially on the fore reef zone during all the year

Phyllidiopsis gemmata

 
Jan
Feb
March
April
May
June
Jully
August
Sept
Oct
Nov
Dec
SB PB and
CD 2010 		Less 1m
 
 
 
 
 
 
 
 
 
 
 
 
Fore reef zone
 
 
2 
3 
2 
 
2 
2 
1 
 
7 
5 
SB PB and
CD 2011 		Less 1m
 
 
 
 
 
 
 
 
 
 
 
 
Fore reef zone
2 
2 
10 
6 
6 
 
 
 
1 
1 
2 
3 
Others obs Less 1m
 
 
 
 
 
 
 
 
 
 
 
 
Fore reef zone
1 
 
 
 
 
1 
 
2 
 
 
2 
3 
TOTAL : 
3 
2 
12 
9 
8 
1 
2 
4 
2 
1 
11 
11 
Spawn :  
 
 
 
 
 
 
 
 
 
 
 
 
Mating behavior : 
 
 
 
 
 
 
 
 
 
 
 
1 

Remarks :
         - Seems observed preferentially on the fore reef zone during all the year

Phyllidiopsis loricata

 
Jan
Feb
March
April
May
June
Jully
August
Sept
Oct
Nov
Dec
SB PB and
CD 2010 		Less 1m
 
 
 
 
 
1 
 
 
 
 
 
 
Fore reef zone
 
 
 
 
 
 
 
 
 
1 
 
 
SB PB and
CD 2011 		Less 1m
 
 
 
 
 
 
 
 
 
 
 
 
Fore reef zone
 
 
 
 
 
 
 
 
 
a 
 
 
Others obs Less 1m
 
 
 
 
 
 
 
 
 
 
 
1 
Fore reef zone
 
 
 
 
 
1 
 
 
1 
 
 
 
TOTAL : 
 
 
 
 
 
2 
 
 
1 
a+1 
 
1 
Spawn :  
 
 
 
 
 
 
 
 
 
 
 
 
Mating behavior : 
 
 
 
 
 
 
 
 
 
 
 
 

Remarks :
         - Not enough data to conclude

Phyllidiopsis phiphiensis

 
Jan
Feb
March
April
May
June
Jully
August
Sept
Oct
Nov
Dec
Others obs Less 1m
 
 
 
 
 
 
 
 
 
 
 
 
Fore reef zone
 
 
1 
 
 
 
 
 
 
 
 
 
TOTAL : 
 
 
1 
 
 
 
 
 
 
 
 
 
Spawn :  
 
 
 
 
 
 
 
 
 
 
 
 
Mating behavior : 
 
 
 
 
 
 
 
 
 
 
 
 

Remarks :
         - Not enough data to conclude

Phyllidiopsis shireenae

 
Jan
Feb
March
April
May
June
Jully
August
Sept
Oct
Nov
Dec
Others obs Less 1m
 
 
 
 
 
 
 
 
 
 
 
 
Fore reef zone
 
 
1 
 
1 
 
 
 
 
 
2 
2 
TOTAL : 
 
 
1 
 
1 
 
 
 
 
 
2 
2 
Spawn :  
 
 
 
 
 
 
 
 
 
 
 
 
Mating behavior : 
 
 
 
 
 
 
 
 
 
 
 
 

Remarks :
         - Not enough data to conclude

Phyllidiopsis sp1

 
Jan
Feb
March
April
May
June
Jully
August
Sept
Oct
Nov
Dec
SB PB and
CD 2010 		Less 1m
 
 
1 
 
 
 
 
 
 
 
 
 
Fore reef zone
 
 
 
 
 
 
 
 
 
 
 
 
SB PB and
CD 2011 		Less 1m
 
 
 
 
 
 
 
 
 
 
 
 
Fore reef zone
 
 
 
 
 
 
 
 
 
 
 
1 
Others obs Less 1m
 
 
 
 
 
 
 
 
 
 
 
 
Fore reef zone
1 
 
 
 
 
 
 
 
 
3 
 
2 
TOTAL : 
1 
 
1 
 
 
 
 
 
 
3 
 
3 
Spawn :  
 
 
 
 
 
 
 
 
 
 
 
 
Mating behavior : 
 
 
 
 
 
 
 
 
 
 
 
 

Remarks :
         - Not enough data to conclude

Phyllidiopsis xishaensis (striata)

 
Jan
Feb
March
April
May
June
Jully
August
Sept
Oct
Nov
Dec
SB PB and
CD 2010 		Less 1m
 
1 
2 
 
1 
 
1 
 
1 
 
 
 
Fore reef zone
 
 
2 
 
 
 
 
 
1 
2 
 
 
SB PB and
CD 2011 		Less 1m
 
 
 
1 
 
 
 
 
 
 
 
1 
Fore reef zone
1 
2 
 
1 
 
 
 
 
 
1 
1 
5 
Others obs Less 1m
1 
 
1 
 
 
 
 
 
 
1 
 
3 
Fore reef zone
2 
 
 
 
1 
 
1 
1 
1 
1 
1 
4 
TOTAL : 
4 
3 
5 
2 
2 
 
2 
1 
3 
5 
2 
13 
Spawn :  
 
 
 
 
 
 
 
 
 
 
 
 
Mating behavior : 
 
 
 
 
 
 
 
 
 
 
 
 

Remarks :
         - Seems observed during all the year

Phylliroe sp1

 
Jan
Feb
March
April
May
June
Jully
August
Sept
Oct
Nov
Dec
Others obs Less 1m
 
 
 
 
 
 
 
 
 
 
 
 
Fore reef zone
 
1 
 
 
 
 
 
 
 
 
1 
 
TOTAL : 
 
1 
 
 
 
 
 
 
 
 
1 
 
Spawn :  
 
 
 
 
 
 
 
 
 
 
 
 
Mating behavior : 
 
 
 
 
 
 
 
 
 
 
 
 

Remarks :
         - Not enough data to conclude

Phyllodesmium cf koehleri

 
Jan
Feb
March
April
May
June
Jully
August
Sept
Oct
Nov
Dec
Others obs Less 1m
 
 
 
 
 
 
 
 
 
 
 
 
Fore reef zone
1 
1 
 
 
 
 
 
 
 
 
 
1 
TOTAL : 
1 
1 
 
 
 
 
 
 
 
 
 
1 
Spawn :  
 
 
 
 
 
 
 
 
 
 
 
 
Mating behavior : 
 
 
 
 
 
 
 
 
 
 
 
 

Remarks :
         - Not enough data to conclude

Phyllodesmium macphersonae

 
Jan
Feb
March
April
May
June
Jully
August
Sept
Oct
Nov
Dec
SB PB and
CD 2011 		Less 1m
 
 
 
 
 
 
 
 
 
 
 
 
Fore reef zone
 
 
 
1 
 
 
 
 
 
 
 
 
Others obs Less 1m
1 
 
 
 
 
 
 
1 
 
 
 
 
Fore reef zone
 
 
 
 
 
 
 
 
 
 
 
1 
TOTAL : 
1 
 
 
1 
 
 
 
1 
 
 
 
1 
Spawn :  
 
 
 
 
 
 
 
 
 
 
 
 
Mating behavior : 
 
 
 
 
 
 
 
 
 
 
 
 

Remarks :
         - Not enough data to conclude

Phyllodesmium magnum

 
Jan
Feb
March
April
May
June
Jully
August
Sept
Oct
Nov
Dec
SB PB and
CD 2010 		Less 1m
 
 
 
 
 
 
 
 
 
 
 
 
Fore reef zone
 
1 
 
 
 
 
 
 
 
 
 
 
Others obs Less 1m
 
 
 
 
 
 
 
 
 
 
 
 
Fore reef zone
 
 
 
 
 
 
 
 
 
 
 
 
TOTAL : 
 
1 
 
 
 
 
 
 
 
 
 
 
Spawn :  
 
 
 
 
 
 
 
 
 
 
 
 
Mating behavior : 
 
 
 
 
 
 
 
 
 
 
 
 

Remarks :
         - Not enough data to conclude

Phyllodesmium pecten

 
Jan
Feb
March
April
May
June
Jully
August
Sept
Oct
Nov
Dec
Others obs Less 1m
 
 
 
 
 
 
 
 
 
 
 
 
Fore reef zone
 
2 
 
 
 
 
 
 
 
 
 
 
TOTAL : 
 
2 
 
 
 
 
 
 
 
 
 
 
Spawn :  
 
 
 
 
 
 
 
 
 
 
 
 
Mating behavior : 
 
 
 
 
 
 
 
 
 
 
 
 

Remarks :
         - Not enough data to conclude

Phyllodesmium cf poindimiei

 
Jan
Feb
March
April
May
June
Jully
August
Sept
Oct
Nov
Dec
SB PB and
CD 2010 		Less 1m
1 
 
 
 
 
 
 
 
 
 
 
 
Fore reef zone
 
 
 
 
 
 
 
 
 
 
 
 
SB PB and
CD 2011 		Less 1m
2 
1 
3 
1 
 
 
 
 
 
 
 
 
Fore reef zone
 
 
 
 
 
 
 
 
 
 
 
 
Others obs Less 1m
 
 
 
 
 
 
 
 
 
 
 
1 
Fore reef zone
 
 
 
 
 
 
 
 
 
 
 
 
TOTAL : 
3 
1 
3 
1 
 
 
 
 
 
 
 
1 
Spawn :  
1 
1 
1 
 
 
 
 
 
 
 
 
 
Mating behavior : 
 
 
 
 
 
 
 
 
 
 
 
 

Remarks :
         - Not enough data to conclude

Phyllodesmium sp1

 
Jan
Feb
March
April
May
June
Jully
August
Sept
Oct
Nov
Dec
Others obs Less 1m
1 
 
 
 
 
 
 
 
 
 
 
 
Fore reef zone
 
 
 
 
 
 
 
 
 
 
 
 
TOTAL : 
1 
 
 
 
 
 
 
 
 
 
 
 
Spawn :  
 
 
 
 
 
 
 
 
 
 
 
 
Mating behavior : 
 
 
 
 
 
 
 
 
 
 
 
 

Remarks :
         - Not enough data to conclude

Phyllodesmium sp 2

 
Jan
Feb
March
April
May
June
Jully
August
Sept
Oct
Nov
Dec
Others obs Less 1m
 
 
 
 
 
 
 
 
 
 
 
 
Fore reef zone
 
 
 
 
 
 
 
 
 
 
 
1 
TOTAL : 
 
 
 
 
 
 
 
 
 
 
 
1 
Spawn :  
 
 
 
 
 
 
 
 
 
 
 
 
Mating behavior : 
 
 
 
 
 
 
 
 
 
 
 
 

Remarks :
         - Not enough data to conclude

Phyllodesmium cf tuberculatum

 
Jan
Feb
March
April
May
June
Jully
August
Sept
Oct
Nov
Dec
Others obs Less 1m
 
 
 
 
 
 
1 
 
 
1 
 
 
Fore reef zone
 
 
 
 
 
 
 
 
 
 
 
 
TOTAL : 
 
 
 
 
 
 
1 
 
 
1 
 
 
Spawn :  
 
 
 
 
 
 
 
 
 
 
 
 
Mating behavior : 
 
 
 
 
 
 
 
 
 
 
 
 

Remarks :
         - Not enough data to conclude

Piseinotecus sp1

 
Jan
Feb
March
April
May
June
Jully
August
Sept
Oct
Nov
Dec
SB PB and
CD 2011 		Less 1m
 
 
 
 
 
 
 
 
 
 
 
 
Fore reef zone
 
1 
 
 
 
 
 
 
 
 
 
 
Others obs Less 1m
 
 
 
 
 
 
 
 
 
 
 
 
Fore reef zone
 
 
 
 
 
 
 
1 
 
 
 
 
TOTAL : 
 
1 
 
 
 
 
 
1 
 
 
 
 
Spawn :  
 
 
 
 
 
 
 
 
 
 
 
 
Mating behavior : 
 
 
 
 
 
 
 
 
 
 
 
 

Remarks :
         - Not enough data to conclude

Placida cremoniana

 
Jan
Feb
March
April
May
June
Jully
August
Sept
Oct
Nov
Dec
SB PB and
CD 2010 		Less 1m
 
 
 
 
 
 
 
 
 
 
 
2 
Fore reef zone
 
 
 
 
 
 
 
 
 
 
 
 
Others obs Less 1m
 
 
 
 
 
 
 
 
 
 
 
 
Fore reef zone
 
 
 
 
 
 
 
 
 
 
 
 
TOTAL : 
 
 
 
 
 
 
 
 
 
 
 
2 
Spawn :  
 
 
 
 
 
 
 
 
 
 
 
 
Mating behavior : 
 
 
 
 
 
 
 
 
 
 
 
 

Remarks :
         - Not enough data to conclude

Plakobranchus ocellatus

 
Jan
Feb
March
April
May
June
Jully
August
Sept
Oct
Nov
Dec
SB PB and
CD 2010 		Less 1m
 
 
 
 
 
3 
 
 
1 
 
 
 
Fore reef zone
 
 
 
 
 
 
 
 
 
 
 
 
Others obs Less 1m
 
 
 
 
a 
1 
a+2 
 
1 
 
 
 
Fore reef zone
 
 
 
 
 
 
 
 
 
 
1 
 
TOTAL : 
 
 
 
 
a 
4 
a+2 
 
2 
 
1 
 
Spawn :  
 
 
 
 
 
 
 
 
 
 
 
 
Mating behavior : 
 
 
 
 
 
 
 
 
 
 
 
 

Remarks :
         - Seems observed preferentially on the lagoon with a maximun from May to September

Platydoris cruenta

 
Jan
Feb
March
April
May
June
Jully
August
Sept
Oct
Nov
Dec
SB PB and
CD 2011 		Less 1m
 
 
 
 
 
1 
 
5 
 
 
 
 
Fore reef zone
 
 
 
 
 
 
 
 
 
 
 
 
Others obs Less 1m
1 
1 
 
 
 
 
1 
 
1 
 
 
3 
Fore reef zone
 
1 
2 
2 
 
 
 
 
 
 
 
 
TOTAL : 
1 
2 
2 
2 
 
1 
1 
5 
1 
 
 
3 
Spawn :  
 
 
 
1 
 
 
 
 
 
 
 
 
Mating behavior : 
 
 
 
 
 
 
 
 
 
 
 
1 

Remarks :
         - Throughout the year in the lagoon and on the fore reef zone, often at night

Platydoris formosa

 
Jan
Feb
March
April
May
June
Jully
August
Sept
Oct
Nov
Dec
Others obs Less 1m
 
 
 
 
 
 
 
 
 
 
 
2 
Fore reef zone
1 
 
1 
 
 
 
 
 
 
 
 
 
TOTAL : 
1 
 
1 
 
 
 
 
 
 
 
 
2 
Spawn :  
 
 
 
 
 
 
 
 
 
 
 
 
Mating behavior : 
 
 
 
 
 
 
 
 
 
 
 
1 

Remarks :
         - Not enough data to conclude

Platydoris inframaculata

 
Jan
Feb
March
April
May
June
Jully
August
Sept
Oct
Nov
Dec
Others obs Less 1m
1 
 
 
 
 
 
 
 
1 
 
 
 
Fore reef zone
 
1 
1 
 
 
 
 
 
 
 
 
 
TOTAL : 
1 
1 
1 
 
 
 
 
 
1 
 
 
 
Spawn :  
 
 
 
 
 
 
 
 
 
 
 
 
Mating behavior : 
 
 
 
 
 
 
 
 
 
 
 
 

Remarks :
         - Not enough data to conclude

Platydoris pulchra

 
Jan
Feb
March
April
May
June
Jully
August
Sept
Oct
Nov
Dec
SB PB and
CD 2010 		Less 1m
 
 
 
 
 
 
 
 
1 
 
1 
2 
Fore reef zone
 
 
 
 
 
 
 
 
 
 
 
 
Others obs Less 1m
 
 
 
 
 
 
 
 
 
 
 
 
Fore reef zone
 
 
 
 
 
 
 
 
 
 
 
 
TOTAL : 
 
 
 
 
 
 
 
 
1 
 
1 
2 
Spawn :  
 
 
 
 
 
 
 
 
 
 
 
 
Mating behavior : 
 
 
 
 
 
 
 
 
 
 
 
 

Remarks :
         - Not enough data to conclude

Platydoris scabra

 
Jan
Feb
March
April
May
June
Jully
August
Sept
Oct
Nov
Dec
SB PB and
CD 2010		 Less 1m
1 
 
1 
 
 
 
 
 
 
 
 
 
Fore reef zone
 
 
 
 
 
 
 
 
 
 
 
 
Others obs Less 1m
 
 
 
 
 
1 
 
1 
 
 
 
2 
Fore reef zone
 
 
 
1 
 
 
 
 
 
 
 
 
TOTAL : 
1 
 
1 
1 
 
1 
 
1 
 
 
 
2 
Spawn :  
 
 
 
 
 
 
 
 
 
 
 
 
Mating behavior : 
 
 
 
 
 
 
 
 
 
 
 
 

Remarks :
         - Not enough data to conclude

Pleurobranchaea brockii

 
Jan
Feb
March
April
May
June
Jully
August
Sept
Oct
Nov
Dec
Others obs Less 1m
 
 
 
 
 
 
 
 
 
 
 
 
Fore reef zone
 
 
 
 
 
 
 
 
b 
2 
 
 
TOTAL : 
 
 
 
 
 
 
 
 
b 
2 
 
 
Spawn :  
 
 
 
 
 
 
 
 
 
 
 
 
Mating behavior : 
 
 
 
 
 
 
 
 
 
 
 
 

Remarks :
         - Not enough data to conclude

Pleurobranchus albiguttatus

 
Jan
Feb
March
April
May
June
Jully
August
Sept
Oct
Nov
Dec
SB PB and
CD 2010 		Less 1m
 
 
1 
 
 
 
 
 
 
5 
a+1 
 
Fore reef zone
 
 
 
 
 
 
 
 
 
 
 
 
SB PB and
CD 2011 		Less 1m
1 
 
 
 
 
2 
 
1 
 
 
2 
2b+2 
Fore reef zone
 
 
 
 
 
 
 
 
 
 
 
 
Others obs Less 1m
 
 
 
 
 
 
 
 
 
3 
3 
3 
Fore reef zone
 
 
 
 
 
 
 
 
 
 
1 
 
TOTAL : 
1 
 
1 
 
 
2 
 
1 
 
8 
a+7 
2b+5 
Spawn :  
 
 
 
 
 
 
 
 
 
 
 
 
Mating behavior : 
 
 
 
 
 
1
 
 
 
 
 
 

Remarks :
         - This species is found preferentially on lagoon from October to December

Pleurobranchus caledonicus

 
Jan
Feb
March
April
May
June
Jully
August
Sept
Oct
Nov
Dec
SB PB and
CD 2011 		Less 1m
 
 
 
1 
 
 
 
 
 
 
 
 
Fore reef zone
 
 
 
 
 
 
 
 
 
 
 
 
Others obs Less 1m
 
 
 
 
 
 
 
 
 
 
1 
1 
Fore reef zone
 
 
 
 
 
 
 
 
 
 
 
 
TOTAL : 
 
 
 
1 
 
 
 
 
 
 
1 
1 
Spawn :  
 
 
 
 
 
 
 
 
 
 
 
 
Mating behavior : 
 
 
 
 
 
 
 
 
 
 
 
 

Remarks :
         - Not enough data to conclude

Pleurobranchus forskalii

 
Jan
Feb
March
April
May
June
Jully
August
Sept
Oct
Nov
Dec
SB PB and
CD 2011 		Less 1m
 
 
 
 
 
 
 
 
 
 
 
8 
Fore reef zone
 
 
 
 
 
 
 
 
 
 
 
 
Others obs Less 1m
 
 
 
 
 
 
1 
 
 
 
1 
 
Fore reef zone
1 
 
 
 
 
 
 
 
 
2 
 
2 
TOTAL : 
1 
 
 
 
 
 
1 
 
 
2 
1 
10 
Spawn :  
 
 
 
 
 
 
1 
 
 
 
 
 
Mating behavior : 
 
 
 
 
 
 
 
 
 
 
 
 

Remarks :
         - Not enough data to conclude

Pleurobranchus grandis

 
Jan
Feb
March
April
May
June
Jully
August
Sept
Oct
Nov
Dec
SB PB and
CD 2010 		Less 1m
 
 
 
 
 
 
 
 
 
2 
 
1 
Fore reef zone
 
 
 
 
 
 
 
 
 
 
 
 
SB PB and
CD 2011 		Less 1m
 
 
 
 
 
 
 
2 
 
 
 
 
Fore reef zone
 
 
 
 
 
 
 
 
 
 
 
 
Others obs Less 1m
 
 
1 
 
 
 
1 
1 
 
2 
 
2 
Fore reef zone
 
 
 
 
 
 
 
 
 
 
1 
 
TOTAL : 
 
 
1 
 
 
 
1 
3 
 
4 
1 
3 
Spawn :  
 
 
 
 
 
 
 
 
 
 
 
 
Mating behavior : 
 
 
 
 
 
 
 
 
 
 
 
 

Remarks :
         - This species is found preferentially on lagoon from July to December

Pleurobranchus peroni

 
Jan
Feb
March
April
May
June
Jully
August
Sept
Oct
Nov
Dec
SB PB and
CD 2010 		Less 1m
 
 
 
1 
 
 
 
3 
2 
5 
1 
3 
Fore reef zone
 
 
 
 
 
 
 
 
 
 
 
 
SB PB and
CD 2011 		Less 1m
 
 
 
 
 
 
 
1 
 
 
3 
2 
Fore reef zone
 
 
 
 
 
 
 
 
 
 
 
 
Others obs Less 1m
1 
 
1 
1 
 
 
 
2 
6 
3 
3 
1 
Fore reef zone
 
1 
 
 
 
 
 
1 
 
 
 
1 
TOTAL : 
1 
1 
1 
2 
 
 
 
7 
8 
8 
7 
7 
Spawn :  
 
 
 
 
 
 
 
 
 
 
1? 
 
Mating behavior : 
 
 
 
 
 
 
 
 
 
 
 
 

Remarks :
         - This species is found on lagoon all the year but preferentially from August to December

Pleurobranchus mamillatus

 
Jan
Feb
March
April
May
June
Jully
August
Sept
Oct
Nov
Dec
Others obs Less 1m
 
 
 
 
 
 
 
 
 
 
1 
 
Fore reef zone
 
 
 
3 
 
 
 
 
 
1 
 
4 
TOTAL : 
 
 
 
3 
 
 
 
 
 
1 
1 
4 
Spawn :  
 
 
 
 
 
 
 
 
 
 
 
 
Mating behavior : 
 
 
 
 
 
 
 
 
 
 
 
 

Remarks :
         -  The large specimens were all found on sandy bottoms from 20-25 m

Plocamopherus lemur

 
Jan
Feb
March
April
May
June
Jully
August
Sept
Oct
Nov
Dec
Others obs Less 1m
 
 
 
1 
 
 
 
 
 
2 
 
 
Fore reef zone
 
 
 
 
 
 
 
 
 
 
 
TOTAL : 
 
 
 
1 
 
 
 
 
 
2 
 
 
Spawn :  
 
 
 
 
 
 
 
 
 
 
 
 
Mating behavior : 
 
 
 
 
 
 
 
 
 
 
 
 

Remarks :
         -  Not enough data to conclude

Plocamopherus margaretae

 
Jan
Feb
March
April
May
June
Jully
August
Sept
Oct
Nov
Dec
Others obs Less 1m
 
 
 
 
 
 
 
 
 
 
 
 
Fore reef zone
 
 
 
 
 
 
 
 
 
 
 
1 
TOTAL : 
 
 
 
 
 
 
 
 
 
 
 
1 
Spawn :  
 
 
 
 
 
 
 
 
 
 
 
 
Mating behavior : 
 
 
 
 
 
 
 
 
 
 
 
 

Remarks :
         -  Not enough data to conclude

Polybranchia orientalis

 
Jan
Feb
March
April
May
June
Jully
August
Sept
Oct
Nov
Dec
SB PB and
CD 2010 		Less 1m
1 
 
3 
4 
4 
2 
1 
2 
b+1 
4 
2 
4 
Fore reef zone
 
 
 
 
 
 
 
 
 
 
 
 
SB PB and
CD 2011 		Less 1m
 
1 
 
 
 
 
 
2 
 
 
1 
3 
Fore reef zone
 
 
 
 
 
 
 
 
 
 
 
 
Others obs Less 1m
 
2 
1 
 
 
 
 
 
 
4 
 
 
Fore reef zone
 
 
 
 
 
 
 
 
 
 
 
 
TOTAL : 
1 
3 
4 
4 
4 
2 
1 
4 
b+1 
8 
3 
7 
Spawn :  
 
 
 
 
1 
 
 
 
 
 
 
 
Mating behavior : 
 
 
 
 
 
 
 
 
 
 
 
 

Remarks :
         - Seems observed during all the year

Polybranchia sp1

 
Jan
Feb
March
April
May
June
Jully
August
Sept
Oct
Nov
Dec
Others obs Less 1m
 
 
 
 
 
 
 
 
 
 
 
1 
Fore reef zone
 
 
 
 
 
 
 
 
 
 
 
 
TOTAL : 
 
 
 
 
 
 
 
 
 
 
 
1 
Spawn :  
 
 
 
 
 
 
 
 
 
 
 
 
Mating behavior : 
 
 
 
 
 
 
 
 
 
 
 
 

Remarks :
         - Not enough data to conclude

Protaeolidiella juliae

 
Jan
Feb
March
April
May
June
Jully
August
Sept
Oct
Nov
Dec
Others obs Less 1m
 
 
 
 
 
 
 
 
 
 
 
 
Fore reef zone
 
3 
1 
 
 
 
 
 
 
2 
 
 
TOTAL : 
 
3 
1 
 
 
 
 
 
 
2 
 
 
Spawn :  
 
 
 
 
 
 
 
 
 
 
 
 
Mating behavior : 
 
 
 
 
 
 
 
 
 
 
 
 

Remarks :
         - Not enough data to conclude

Pteraeolidia semperi

 
Jan
Feb
March
April
May
June
Jully
August
Sept
Oct
Nov
Dec
SB PB and
CD 2010 		Less 1m
 
 
 
 
 
 
 
 
 
 
 
 
Fore reef zone
 
 
 
 
 
 
 
 
 
 
1 
 
SB PB and
CD 2011 		Less 1m
 
 
 
 
 
 
 
 
 
 
 
 
Fore reef zone
 
 
 
1 
 
 
 
 
 
 
 
 
Others obs Less 1m
3a 
 
 
 
1 
 
4 
 
1 
 
 
 
Fore reef zone
 
 
 
 
1 
 
 
 
2 
2 
 
2 
TOTAL : 
3a 
 
 
1 
1 
 
4 
 
3 
2 
1 
2 
Spawn :  
 
 
 
 
 
 
 
 
 
 
 
 
Mating behavior : 
 
 
 
 
 
 
 
 
 
 
 
 

Remarks :
         - Seems observed during all the year

Reticulidia suzanneae

 
Jan
Feb
March
April
May
June
Jully
August
Sept
Oct
Nov
Dec
Others obs Less 1m
 
 
 
 
 
 
 
 
 
 
 
 
Fore reef zone
 
1 
 
 
 
 
 
3 
 
2 
2 
5 
TOTAL : 
 
1 
 
 
 
 
 
3 
 
2 
2 
5 
Spawn :  
 
 
 
 
 
 
 
 
 
 
 
 
Mating behavior : 
 
 
 
 
 
 
 
 
 
1 
 
1 

Remarks :
         - Not enough data to conclude

Risbecia pulchella

 
Jan
Feb
March
April
May
June
Jully
August
Sept
Oct
Nov
Dec
SB PB and
CD 2010 		Less 1m
 
 
 
 
 
 
 
 
 
 
 
 
Fore reef zone
 
 
 
 
 
 
 
 
 
1 
 
 
SB PB and
CD 2011 		Less 1m
 
 
 
 
 
 
 
 
 
 
 
 
Fore reef zone
 
 
2 
1 
 
 
 
 
 
a 
 
 
Others obs Less 1m
 
 
1 
 
 
 
 
 
 
 
 
1 
Fore reef zone
2 
3 
 
3 
1 
 
 
 
 
2 
6 
2 
TOTAL : 
2 
3 
3 
4 
1 
 
 
 
 
a+3 
6 
3 
Spawn :  
 
 
 
 
 
 
 
 
 
 
 
 
Mating behavior : 
 
 
 
 
 
 
 
 
 
 
 
 

Remarks :
         - Seems observed during all the year

Symbols used in the summary tables

- SB, PB, CD corresponded to Sully Bachel, Philibert Bidgrain and Christophe Cadet observations in Reunion Island during 2010, 2011....

- Number of specimens observed :
             - The number is the number of isolated individuals observed
             - a corresponds to a population between 5 and 10 specimens
             - b corresponds to a population between 10 and 100 specimens
             - c corresponds to a population between 100 and 1000 specimens
             - d corresponds to a population of more than 1000 specimens

- Spawns and matings events :
             - The number is the number of observed behaviors
             - " m " is a behavior observed in a small population
             - " M " is a behavior observed in a large population, such an entire reef ...