Table 1

Summary of the 34 sites surveyed during the study, including 20 rivers (29 sites) and 5 closed water bodies (non-functional hatchery, ornamental ponds or water retention pond).

Site GPS coordinates Detection year Type of habitat First capture effort Second capture effort Sex-ratio (F:M) Size range (cm)
Oman 14°29′9″N; 60°57′42″O 2014 Stream 0 0
Manzo 14°35′41″N; 60°56′20″O 2015, 2018 Water retention pond 9 9 10:8 4.9–18.4
Petit Galion 14°43′59″N; 60°59′43″O 2015, 2018 Stream 3 2 5:0 5.5–11.8
Lezarde Site 1 14°38′54″N; 60°59′24″O 2018 Stream 12 17 11:18 6.5–22.1
Lezarde Site 2 14°39′58″N; 60°59′45″O 2015, 2018 4 0 2:2 9.9–18.1
Lezarde Site 3 14°41′32″N; 61°0′57″O 2018 5 3 4:4 5.9–15.2
Lezarde Site 4 14°41′32″N; 61°0′55″O 2018 3 2 3:2 6.5–15.1
Lorrain 14°48′9″N; 61°3′3″O 2018 Stream 2 0 0:2 8.9–9.6
Coulisses 14°32′51″N; 60°57′36″O 2018 Stream 2 1 2:1 8.9–15.9
Petite Rivière Site 1 14°37′12″N; 60°58′28″O 2018 Stream 5 7 6:6 4.9–14.2
Petite Rivière Site 2 14°39′47″N; 60°58′8″O 0 0
Grand Galion 14°43′54″N; 60°59′4″O 2018 Stream 8 5 6:7 4.9–11.9
Petite Lezarde 14°40′11″N; 61°0′1″O 2018 Stream 3 0 2:1 8.3–13.1
Château Gaillard 14°31′50″N; 61°0′28″ 2018 Non-functional hatchery 0* 0
Jardin Emeraude 14°44′58″N; 61°6′7″O 2018 Ornamental pond 0* 0
Habitation Ceron 14°49′52″N; 61°13′21″O 2018 Ornamental pond 1 0 0:1 10.6
Morne Rouge 14°46′2″N; 61°7′0″O 2018 Non-functional hatchery 0* 0
Cacaos 14°33′29″N; 60°56′24″O 2018 Stream 6 2 5:3 5.6–13.9
Ceron 14°50′19″N; 61°13′29″O Stream 0 0
Grand′Rivière 14°52′30″N; 61°8′52″O Stream 0 0
Capot 14°46′41″N; 61°7′0″O Stream 0 0
Carbet Site 1 14°42′54″N; 61°10′7″O Stream 0 0
Carbet Site 2 14°43′1″N; 61°9′41″O 0 0
Carbet Site 3 14°42′48″N; 61°9′4″O 0 0
Galion 14°43′7″N; 60°57′15″O Stream 0 0
Blanche 14°40′42″N; 61°1′19″O Stream 0 0
Case Navire Site 1 14°37′9″N; 61°6′1″O Stream 0 0
Case Navire Site 2 14°37′17″N; 61°6′5″O 0 0
Roussane 14°33′34″N; 60°56′4″O Stream 0 0
Vauclin 14°32′30″N; 50°61′12″O Stream 0 0
Massel 14°30′8″N; 60°50′4″O Stream 0 0
Rivière Pilote Site 1 14°29′0″N; 60°54′13″O Stream 0 0
Rivière Pilote Site 2 14°29′46″N; 60°54′18″O 0 0
Rivière Pilote Site 3 14°31′0″N; 60°52′55″O 0 0

GPS coordinates and detection year were added. For each site, the number of Cherax quadricarinatus caught was noted after the first and second capture effort. Individuals were sexed and measured. (−) indicates no value because of no capture of red claw crayfish.

*A visual observation of crayfish with no capture.

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