Diet and food resource partition among benthic tadpoles of three anuran species in Atlantic Forest tropical streams

Figures & data

Table 1. Items found in the diet of Aplastodiscus cavicola, Aplastodiscus sibilatus and Bokermannohyla capra tadpoles collected from Atlantic Forest streams of the MER, and rubber silviculture streams. %NF – numerical frequency, %FO – frequency of occurrence, I – importance index, UND – undetermined.

	A. cavicola			A. sibilatus			B. capra
Food items	%NF	%FO	I	%NF	%FO	I	%NF	%FO	I
Bacillariophyceae	24.4	100	62.2	17.3	100	58.6	15.77	100	57.89
Cianophyceae
Oscillatoria	4.8	100	52.4	15.1	100	57.6	0.32	5.88	3.10
Plancktonlyngbya	20.7	75	47.8	15.4	100	57.7	5.19	64.71	34.95
Geitlerinema	–	–	–	–	–	–	0.21	5.88	3.05
Limnothrix	–	–	–	–	–	–	0.64	23.53	12.08
Spirulina	1.6	55	28.3	0.7	50	25.3	0.78	35.29	18.04
Filament UND	–	–	–	–	–	–	17.90	88.13	53.07
Euglenophyceae
Euglena	1.3	50	25.7	–	–	–	0.82	52.94	26.88
Trachelomonas	1.9	79	3.8	0.7	40	20.3	2.45	88.23	45.34
Chlorophyceae
Filament UND	0.4	20	10.2	0.1	20	10.1	2.98	94.12	48.55
Oedogonium	0.4	15	7.7	0.9	40	20.4	–	–	–
Spermatophyta (Fragments)	13.1	100	56.6	19.2	100	59.6	17.83	100	58.92
Cyclea
Arcela	3.1	90	46.6	6.1	100	53.3	0.53	70.59	35.56
Assulina	0.6	35	17.8	0.1	10	10.1	0.14	17.65	8.89
Centropix	0.6	30	15.3	0.1	20	10.1	0.32	29.41	14.87
Diffugia	1.2	40	20.6	1.8	40	20.9	3.97	74.47	39.83
Didinium	1.1	50	25.5	1.6	60	30.8	–	–	–
Nebela	4.9	100	52.4	4.6	80	42.3	1.38	58.82	30.10
Quadrullela	0.7	40	20.3	0.6	40	20.3	0.25	23.53	11.89
Filoreticulosea
Euglypha	3.8	75	39.4	5	60	32.5	3.73	82.35	43.04
Trinema	11.4	100	55.7	4.7	100	52.3	7.57	100	53.78
Fungi	2.1	40	21.0	6	100	53.3	15.13	94.12	54.62
Acari	–	–	–	–	–	–	0.11	17.65	8.88
Rotifera	0.1	5.0	2.5	0.2	10	5.1	0.25	17.65	8.95
Crustacea	–	–	–	–	–	–	0.07	11.76	5.92
Animal UND	–	–	–	–	–	–	0.78	47.06	23.92

Figure 1. Clusters formed from NMDS analysis of the diet of tadpoles studied in the MER. Triangle – Bokermannohyla capra, circle – Aplastodiscus sibilatus, square – Aplastodiscus cavicola.