Rediscovering the lost: eDNA detection of freshwater decapods on Réunion Island | Knowledge and Management of Aquatic Ecosystems

Biological conservation, ecosystems restoration and ecological engineering

Open Access

Table 1

Summary of crustacean families and species detected by environmental DNA (eDNA) metabarcoding across sampling stations on Réunion Island. Crosses indicate detections. “C1” and “C2” refer to the two sampling campaigns (C1: July 2022 and C2: December 2024). Taxa are grouped into three ecological categories: amphidromous, marine, and terrestrial.

		Amphidromous										Marine			Terrestrial

		Atyidae					Palaemonidae				Varunidae	Penaeidae		Gecarcinidae	Grapsidae

Watershed	Site	Atyoida serrata	Atyoida cf. serrata	Caridina henriettae	Caridina typus	Halocaridinides sp.	Macrobrachium australe	Macrobrachium lar	Macrobrachium sp.	Palaemon concinnus	Varuna litterata	Metapenaeus sp.	Penaeus indicus	Cardisoma carnifex	Geograpsus grayi	Species Richness
Rivière du Mât	C1_MAT_1	X														1
	C1_MAT_2	X														1
	C1_MAT_3	X														1
	C2_MAT_1						X	X								2
	C2_MAT_2			X												1
	C2_MAT_3	X	X													2
Rivière des Marsouins	C1_MAR_1	X			X		X									3
	C1_MAR_2	X														1
	C2 MAR_1	X		X			x									3
SaintEtienne	C1_STE_1						X									1
	C2_STE_1	X			X		X		X	x						5
	C1_GB_1	X														1
	C1_PR_1	X														1
Ravine Saint-Gilles	C1_GIL_1	X	X	X	X		X									5
	C2_GIL_1	X			X		X									3
Rivière des Roches	C1_ROC_1	X		X	X		X									4
	C2_ROC_1	X		X	X	X	X		X							6
Rivière Saint-Denis	C1_DEN_1	X		X	X	X	X									5
	C2 DEN_1			X		X	X									3
SainteMarie	C1 STM 1			X	X		X							X		4
Langevin	C1_LAN_1	X	X		X		X									4
	C2 LAN 1	X	X				X									3
Remparts	C1_REM_1	X										X	X			3
	C2_REM_1	X													X	2
Rivière des pluies	C1_PLU_1	X		X	X		X									4
	C2_PLU_1	X					X									2
SainteSuzanne	C1_SUZ_1			X	X		X									3
Saint-Jean	C1 STJ 1			X			X									2
Anse des Cascades	C1_CAS_1	X	X		X			X								4
Saint-Paul	C1_CIM_1				X		X				X					3

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