Predation impact ofProcambarus clarkii on Rana limnocharis tadpoles in Guilin area

doi:10.3724/SP.J.1003.2008.07223

Abstract

Abstract:

Procambarus clarkiihas invaded many provinces in China, such as Jiangsu, Hubei, and Anhui. In order to evaluate its effect onRana limnocharis, we investigated the population density of P. clarkii and R.limnocharis in their natural habitat in Guilin between May and June in 2006. As a comparison, we also carried out indoor experiments to study P. clarkii predation on the tadpole of R. limnocharis and Microhyla ornata. The field investigation showed that there was a significantly negative correlation between the density of P. clarkii and that of R. limnocharis tadpoles, while indoor experiments showed that the number of R. limnocharis tadpoles preyed by Procambarus clarkii was positively correlated with P. clarkii’s body length, and moreR. limnocharis tadpoles were preyed than M. ornata tadpoles. Our results suggest that P. clarkii is likely to endanger amphibian larva, therefore, it should be monitored and controlled.

Key words: Procambarus clarkii, Rana limnocharis, Microhyla ornata, predation, alien species

Zhengjun Wu, Fengjin Cai, Yunfeng Jia, Jianxin Lu, Yongfu Jiang, Chengming Huang. Predation impact ofProcambarus clarkii on Rana limnocharis tadpoles in Guilin area[J]. Biodiv Sci, 2008, 16(2): 150-155.

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URL: https://www.biodiversity-science.net/EN/10.3724/SP.J.1003.2008.07223

https://www.biodiversity-science.net/EN/Y2008/V16/I2/150

Figures/Tables 4

References 29

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样方编号 Plot	面积 Area (m²)	克氏原螯虾数 Number of Procambarus clarkii	克氏原螯虾密度 Density of Procambarus clarkii (ind./ m²)	泽蛙蝌蚪数 Number of Rana limnocharis tadpole	泽蛙蝌蚪密度 Density of Rana limnocharis tadpole (ind./m²)
1	4.40	0	0	40	9.09
2	4.25	7	1.65	2	0.47
3	5.75	10	1.74	0	0
4	11.00	3	0.27	1	0.09
5	13.50	3	0.22	14	1.04
6	7.75	0	0	19	2.45
7	9.60	1	0.10	8	0.83
8	7.00	2	0.29	5	0.71
9	8.00	0	0	11	1.38
10	6.00	1	0.17	20	3.33
11	4.50	6	1.33	0	0
12	3.20	2	0.63	3	0.94
13	16.00	1	0.06	7	0.44
14	27.56	8	0.29	13	0.47
15	5.40	1	0.19	6	1.11
16	6.25	0	0	11	1.76
17	7.00	0	0	14	2.00
18	12.15	2	0.16	25	2.06
19	5.94	3	0.51	0	0
20	3.84	4	1.04	7	1.83
21	4.00	3	0.75	8	2.00
22	39.00	32	0.82	9	0.23
23	8.32	1	0.12	11	1.32
24	5.98	1	0.17	32	5.35
25	14.00	3	0.21	20	1.43
26	12.00	3	0.25	8	0.67
27	10.08	4	0.40	2	0.20
合计Total	262.47	101	0.42±0.50*	296	1.53±1.92*

样方编号 Plot	面积 Area (m²)	克氏原螯虾数 Number of Procambarus clarkii	克氏原螯虾密度 Density of Procambarus clarkii (ind./ m²)	泽蛙蝌蚪数 Number of Rana limnocharis tadpole	泽蛙蝌蚪密度 Density of Rana limnocharis tadpole (ind./m²)
1	4.40	0	0	40	9.09
2	4.25	7	1.65	2	0.47
3	5.75	10	1.74	0	0
4	11.00	3	0.27	1	0.09
5	13.50	3	0.22	14	1.04
6	7.75	0	0	19	2.45
7	9.60	1	0.10	8	0.83
8	7.00	2	0.29	5	0.71
9	8.00	0	0	11	1.38
10	6.00	1	0.17	20	3.33
11	4.50	6	1.33	0	0
12	3.20	2	0.63	3	0.94
13	16.00	1	0.06	7	0.44
14	27.56	8	0.29	13	0.47
15	5.40	1	0.19	6	1.11
16	6.25	0	0	11	1.76
17	7.00	0	0	14	2.00
18	12.15	2	0.16	25	2.06
19	5.94	3	0.51	0	0
20	3.84	4	1.04	7	1.83
21	4.00	3	0.75	8	2.00
22	39.00	32	0.82	9	0.23
23	8.32	1	0.12	11	1.32
24	5.98	1	0.17	32	5.35
25	14.00	3	0.21	20	1.43
26	12.00	3	0.25	8	0.67
27	10.08	4	0.40	2	0.20
合计Total	262.47	101	0.42±0.50*	296	1.53±1.92*

克氏原螯虾编号 No. ofProcambarus clarkii	克氏原螯虾体长 Length ofProcambarus clarkii (cm)	克氏原螯虾每天捕食的泽蛙蝌蚪数 Number of Rana limnocharis tadpole preyed by Procambarus clarkii per day (mean±SD)
1	3.6	1.33±0.58
2	4.4	1.33±1.15
3	4.7	1.67±0.58
4	5.4	3.00±1.00
5	6.1	3.33±0.58
6	6.5	4.67±1.53
7	6.9	9.00±2.00
8	7.7	5.00±2.00
9	8.2	6.00±1.00

克氏原螯虾编号 No. ofProcambarus clarkii	克氏原螯虾体长 Length ofProcambarus clarkii (cm)	克氏原螯虾每天捕食的泽蛙蝌蚪数 Number of Rana limnocharis tadpole preyed by Procambarus clarkii per day (mean±SD)
1	3.6	1.33±0.58
2	4.4	1.33±1.15
3	4.7	1.67±0.58
4	5.4	3.00±1.00
5	6.1	3.33±0.58
6	6.5	4.67±1.53
7	6.9	9.00±2.00
8	7.7	5.00±2.00
9	8.2	6.00±1.00

克氏原螯虾编号 No. ofProcambarus clarkii	克氏原螯虾体长 Length ofProcambarus clarkii (cm)	被捕食的泽蛙蝌蚪个体数 Tadpoles of Rana limnocharispreyed by Procambarus clarkii	被捕食的饰纹姬蛙蝌蚪个体数 Tadpoles of Microhyla ornata preyed by Procambarus clarkii
1	3.6	3	1
2	4.4	4	2
3	4.7	4	1
4	5.4	6	3
5	6.1	7	4
6	6.5	7	4
7	6.9	8	8
8	7.7	7	2
9	8.2	10	6