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 ...

Glossodoris atromarginata

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

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

Glossodoris cincta

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

Remarks :
         - Not enough data to conclude

Glossodoris cf cincta

 
Jan
Feb
March
April
May
June
Jully
August
Sept
Oct
Nov
Dec
SB PB and
CD 2010 		Less 1m
 
 
 
 
 
 
 
 
 
 
 
 
Fore reef zone
 
 
4 
2 
 
3 
1 
 
4 
 
2 
12 
SB PB and
CD 2011 		Less 1m
 
 
 
 
 
 
 
 
 
 
 
 
Fore reef zone
3 
a 
 
3 
5 
 
 
2 
 
4 
2 
3 
Others obs Less 1m
 
 
 
 
 
 
 
 
 
 
 
 
Fore reef zone
1 
2 
4 
 
1 
1 
1 
1 
 
3 
 
2 
TOTAL : 
4 
a+2 
8 
5 
6 
4 
2 
3
4 
7 
4 
17 
Spawn :  
 
 
 
 
 
 
 
 
 
 
 
 
Mating behavior : 
 
 
 
 
 
 
 
 
 
 
 
 

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

Glossodoris hikuerensis

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

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

Glossodoris paladentatus

 
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

Glossodoris pallida

 
Jan
Feb
March
April
May
June
Jully
August
Sept
Oct
Nov
Dec
SB PB and
CD 2010 		Less 1m
 
 
 
 
 
 
 
 
 
 
 
 
Fore reef zone
 
 
a+1 
 
3 
 
 
1 
3 
 
6 
10 
SB PB and
CD 2011 		Less 1m
 
 
3 
 
 
 
 
 
 
1 
 
 
Fore reef zone
7 
a 
1 
b+4 
b+6 
 
 
4 
 
 
 
3 
Others obs Less 1m
 
 
 
 
 
 
 
 
 
 
 
 
Fore reef zone
 
 
3 
1 
 
2 
1 
 
3 
 
 
1 
TOTAL : 
7 
a 
a+8 
b+5 
b+9 
2 
1 
5 
6 
1 
6 
14 
Spawn :  
 
 
 
 
 
 
 
 
 
 
 
 
Mating behavior : 
 
 
 
 
 
 
 
 
 
 
 
 

Remarks :
         - Seems observed during all the year on fore reef zone but preferentialy from February to May

Glossodoris rufomarginata

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

Remarks :
         - Not enough data to conclude

Glossodoris sp 1

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

Remarks :
         - Not enough data to conclude

Glossodoris symmetricus

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

Remarks :
         - Not enough data to conclude

Godiva rachelae

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

Remarks :
         - Not enough data to conclude

Goniobranchus rubrocornutus

 
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

Goniodoris sp. 1

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

Remarks :
         - No data

Gymnodoris aurita

 
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

Gymnodoris ceylonica

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

Remarks :
         - Often observed in large population associated with spawning events

Gymnodoris citrina

 
Jan
Feb
March
April
May
June
Jully
August
Sept
Oct
Nov
Dec
SB PB and
CD 2010 		Less 1m
5 
4 
14 
2 
10 
9 
8 
9 
4 
a+6 
9 
7 
Fore reef zone
 
 
 
 
 
 
 
 
 
 
 
1 
SB PB and
CD 2011 		Less 1m
3 
4 
2 
1 
 
 
 
 
 
 
4 
 
Fore reef zone
 
 
 
1 
 
 
 
 
 
 
 
 
Others obs Less 1m
2 
2 
5 
 
4 
1 
1 
2 
2 
8 
1 
 
Fore reef zone
 
 
 
 
1 
 
 
 
1 
 
 
 
TOTAL : 
10 
10 
21 
4 
15 
10 
9 
11 
7 
a+14 
14 
8 
Spawn :  
 
 
 
 
 
 
 
 
 
1 
1 
 
Mating behavior : 
 
 
 
 
 
1 
 
 
 
2 
 
1 

Remarks :
         - Seems observed during all the year on the lagoon
         - This species seems to breed preferentially from October to December

Gymnodoris impudica

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

Remarks :
         - Not enough data to conclude

Gymnodoris sp 1

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

Remarks :
         - Observed during all the year

Gymnodoris nigricolor

 
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

Gymnodoris okinawae

 
Jan
Feb
March
April
May
June
Jully
August
Sept
Oct
Nov
Dec
SB PB and
CD 2010 		Less 1m
 
 
2 
4 
11 
3 
10 
7 
11 
a+3 
 
6 
Fore reef zone
 
 
 
 
 
 
 
 
 
1 
 
 
SB PB and
CD 2011 		Less 1m
3 
2 
2 
 
 
2 
 
 
 
 
1 
 
Fore reef zone
 
 
 
 
 
 
 
 
 
 
 
 
Others obs Less 1m
1 
2 
 
 
1 
 
a+1 
3 
2 
 
 
 
Fore reef zone
1 
 
1 
 
 
 
 
 
 
 
 
 
TOTAL : 
5 
4 
5 
4 
12 
5 
a+11 
10 
13 
a+4 
1 
6 
Spawn :  
 
 
 
 
1 
 
m 
1 
 
 
1 
 
Mating behavior : 
 
 
 
 
 
 
 
 
 
 
 
 

Remarks :
         - Seems observed during all the year on the lagoon with a maximun from May to October
         - This species seems to breed preferentially from Jully to August

Gymnodoris tuberculosa

 
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

Halgerda cf carlsoni

 
Jan
Feb
March
April
May
June
Jully
August
Sept
Oct
Nov
Dec
Others obs Less 1m
 
 
 
 
 
 
 
 
 
 
 
 
Fore reef zone
 
 
2 
 
 
 
 
 
 
4 
 
 
TOTAL : 
 
 
2 
 
 
 
 
 
 
4 
 
 
Spawn :  
 
 
 
 
 
 
 
 
 
 
 
 
Mating behavior : 
 
 
 
 
 
 
 
 
1 
 
 
 

 

Remarks :
         - Not enough data to conclude

Halgerda formosa

 
Jan
Feb
March
April
May
June
Jully
August
Sept
Oct
Nov
Dec
SB PB and
CD 2010 		Less 1m
 
2 
1 
 
 
 
 
 
1 
 
1 
1 
Fore reef zone
 
 
1 
1 
4 
1 
 
2 
6 
1 
5 
3 
SB PB and
CD 2011 		Less 1m
 
 
1 
 
 
 
 
 
 
1 
 
2 
Fore reef zone
 
3 
 
3 
a+2 
 
 
4 
1 
a 
7 
6 
Others obs Less 1m
 
 
 
 
 
 
 
1 
 
2 
1 
1 
Fore reef zone
3 
 
 
1 
 
2 
1 
1 
2 
3 
 
3 
TOTAL : 
3 
5 
3 
4 
a+6 
3 
1 
8 
10 
a+7 
14 
16 
Spawn :  
 
 
 
 
 
 
 
 
 
 
 
 
Mating behavior : 
 
 
 
 
 
 
 
 
 
 
1 
1 

Remarks :
         - Seems observed during all the year but preferentially from September to December

Halgerda sp 1

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

Remarks :
         - Not enough data to conclude

Halgerda tessellata

 
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 
 
 
 
 
 
1 
 
1 
2 
TOTAL : 
 
 
1 
1 
 
 
 
 
1 
 
1 
2 
Spawn :  
 
 
 
 
 
 
 
 
 
 
 
 
Mating behavior : 
 
 
 
 
 
 
 
 
 
 
 
 

Remarks :
         - Not enough data to conclude

Halgerda toliara

 
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
 
 
 
 
1 
 
 
 
 
 
 
 
SB PB and
CD 2011 		Less 1m
 
 
 
 
 
 
 
 
 
 
1 
 
Fore reef zone
 
 
 
 
 
 
 
 
 
 
2 
 
Others obs Less 1m
 
 
 
 
 
 
 
 
 
1 
1 
 
Fore reef zone
1 
 
 
 
 
 
 
1 
 
1 
2 
 
TOTAL : 
1 
 
 
 
1 
 
 
1 
 
3 
7 
1 
Spawn :  
 
 
 
 
 
 
 
 
 
 
 
 
Mating behavior : 
 
 
 
 
 
 
 
 
 
 
 
 

Remarks :
         - Seems observed preferentially from October to December

Halgerda wasinensis

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

Remarks :
         - Not enough data to conclude

Hallaxa fuscescens

 
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

Hallaxa iju

 
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

Haminoea cymbalum

 
Jan
Feb
March
April
May
June
Jully
August
Sept
Oct
Nov
Dec
SB PB and
CD 2010 		Less 1m
2 
2b+11 
b+a+2 
b+3 
 
1 
 
 
b+a+4 
 
a+4 
b+a+4 
Fore reef zone
 
 
 
 
 
 
 
 
 
 
 
 
SB PB and
CD 2011 		Less 1m
3b+2 
c+b+2 
1 
1 
 
 
 
 
 
 
b 
2b+a 
Fore reef zone
 
 
 
 
 
 
 
 
 
 
 
 
Others obs Less 1m
2 
d+2 
 
a 
 
2 
 
1 
b+1 
c+b 
c+b 
b+a+1 
Fore reef zone
 
 
 
 
 
 
 
 
 
 
 
 
TOTAL : 
3b+6 
d+c+3b+15 
b+a+3 
b+a+4 
 
3 
 
1 
2b+a+5 
c+b 
c+2b+a+4 
4b+3a+5 
Spawn :  
m+1 
M+m+2 
 
 
 
 
 
 
 
 
 
3m 
Mating behavior : 
 
 
 
 
 
 
 
 
 
 
 
 

Remarks :
         - Seems observed on the lagoon from September to April
         - This species seems to breed preferentially from December to February

Herviella albida

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

Remarks :
         - Not enough data to conclude

Herviella mietta

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

Remarks :
         - Not enough data to conclude

Hexabranchus sanguineus

 
Jan
Feb
March
April
May
June
Jully
August
Sept
Oct
Nov
Dec
SB PB and
CD 2010 		Less 1m
11 
13 
5 
9 
8 
5 
1 
2 
4 
4 
2 
a+5 
Fore reef zone
 
 
 
 
 
 
 
 
 
 
2 
 
SB PB and
CD 2011 		Less 1m
2a+3 
3a+10 
b+6 
2 
 
 
 
1 
 
 
1 
2 
Fore reef zone
 
4 
1 
a 
6 
 
 
 
 
 
 
4 
Others obs Less 1m
7 
5 
4 
2 
3 
1 
 
2 
3 
2a 
a+1 
4 
Fore reef zone
1 
1 
 
1 
1 
 
 
 
 
1 
 
2 
TOTAL : 
2a+22 
3a+33 
b+16 
a+14 
18 
6 
1 
5 
7 
2a+5 
a+6 
a+17 
Spawn :  
1 
 
2 
 
 
1 
a 
 
 
2 
1 
 
Mating behavior : 
 
 
 
 
 
 
 
 
 
 
 
 

Remarks :
         - Seems observed during all the year with a maximun from October to April

Carminodoris grandiflora

 
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 
2 
 
 
 
 
3 
 
 
 
 
 
Fore reef zone
 
 
 
 
 
 
 
 
 
 
 
 
TOTAL : 
1 
2 
 
 
 
 
3 
 
1 
 
 
 
Spawn :  
 
 
 
 
 
 
1 
 
 
 
 
 
Mating behavior : 
 
 
 
 
 
 
 
 
 
 
 
 

Remarks :
         - Seems observed during all the year

Hydatina amplustre

 
Jan
Feb
March
April
May
June
Jully
August
Sept
Oct
Nov
Dec
SB PB and
CD 2010 		Less 1m
 
 
 
 
 
 
 
1 
4 
 
1 
4 
Fore reef zone
 
 
 
 
 
 
 
 
 
 
 
 
SB PB and
CD 2011 		Less 1m
2 
 
 
 
 
 
 
2 
 
 
4 
2a+10 
Fore reef zone
 
 
 
 
 
 
 
 
 
 
 
 
Others obs Less 1m
 
 
 
 
 
 
 
2 
1 
 
1 
a+1 
Fore reef zone
 
 
 
 
 
 
 
 
 
 
 
 
TOTAL : 
2 
 
 
 
 
 
 
5 
5 
 
6 
3a+15 
Spawn :  
 
 
 
 
 
 
 
 
 
 
 
 
Mating behavior : 
 
 
 
 
 
 
 
 
 
 
 
3 

Remarks :
         - Seems preferentially observed on Etang Salé rocky coast from August to December

Hydatina physis

 
Jan
Feb
March
April
May
June
Jully
August
Sept
Oct
Nov
Dec
SB PB and
CD 2010 		Less 1m
 
 
1 
 
 
 
 
 
2 
2 
a 
a+1 
Fore reef zone
 
 
 
 
 
 
 
 
 
 
 
 
SB PB and
CD 2011 		Less 1m
1 
2 
2 
 
 
 
 
 
 
 
1 
4 
Fore reef zone
 
 
 
 
 
 
 
 
 
 
 
 
Others obs Less 1m
1 
 
 
 
 
 
 
 
 
 
 
4 
Fore reef zone
 
 
 
 
 
 
 
 
 
 
 
 
TOTAL : 
2 
2 
3 
 
 
 
 
 
2 
2 
a+1 
a+9 
Spawn :  
1 
 
 
 
 
 
 
 
 
 
 
 
Mating behavior : 
 
 
 
 
 
 
 
 
 
1 
 
 

Remarks :
         - Seems preferentially observed on Etang Salé rocky coast from September to December

Hydatina zonata

 
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

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 ...