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Table 1. Parasitological parameters of the flea community of studied small mammal hosts studied

From: Patterns of flea infestation in rodents and insectivores from intensified agro-ecosystems, Northwest Spain

Host species [n totala/n aliveb] Flea species n. identified fleas [n hostsc] Fleas intensity range Prevalence % (95% CI)d Mean intensity (± SE) Mean abundance (± SE) Variance/mean ratio Discrepancy index
Mean (95% CI)e
Microtus arvalis [1380/941] CAG 1731 [539] 1–18 39.1 (36.5-41.7) 3.21 (0.14) 1.25 (0.09) 9.8 0.81f (0.79-0.83)
NF 1681 [643] 1–30 46.6 (43.9-49.3) 2.61 (0.09) 1.22 (0.06) 4.19 0.73f (0.71-0.75)
LT 34 [29] 1–4 2.1 (1.4-3.0) 1.17 (0.01) 0.02 (0.01) 1.45 0.98f (0.97-0.99)
Apodemus sylvaticus [522/238] CAG 116 [75] 1–7 14.4 (11.5-17.7) 1.55 (0.06) 0.22 (0.03) 2.2 0.90 (0.87-0.92)
NF 182 [116] 1–7 22.2 (18.7-26.0) 1.57 (0.07) 0.35 (0.04) 1.97 0.84 (0.81-0.87)
LT 387 [140] 1–23 26.8 (23.1-30.8) 2.76 (0.17) 0.74 (0.09) 5.21 0.85 (0.82-0.87)
Mus spretus [304/49] CAG 13 [11] 1–3 3.6 (1.8-6.4) 1.18 (0.09) 0.04 (0.01) 1.42 0.97 (0.95-0.98)
NF 29 [21] 1–5 6.9 (4.3-10.4) 1.38 (0.14) 0.10 (0.02) 1.88 0.94 (0.92-0.97)
LT 39 [18] 1–7 5.9 (3.5-9.2) 2.17 (0.22) 0.13 (0.04) 3.24 0.96 (0.94-0.97)
Crocidura russula [42/6] CAG 7 [2] 2–5 4.8 (0.6-16.2) 3.50 (0.83) 0.17 (0.13) 4.07 0.94 (0.86-0.95)
NF 7 [5] 1–3 11.9 (4.0-25.6) 1.40 (0.40) 0.17 (0.08) 1.73 0.89 (0.79-0.95)
Microtus lusitanicus/duodecimcostatus [4/3] CAG 12 [3] 2–6
NF 2 [1] 2
Mustela nivalis [2/2] NF 2 [2] 1
  1. SE, standard error; CAG, Ctenophthalmus apertus gilcolladoi; NF, Nosopsyllus fasciatus; LT, Leptopsylla taschenbergi.
  2. aNumber of total hosts captured
  3. bNumber of hosts brought alive to the laboratory and killed, infested or uninfested
  4. cNumber of hosts infested with all fleas identified
  5. d95% Confidence interval by Clopper-Pearson
  6. e95% Confidence interval by bootstrap method
  7. fSample too big for bootstrap confident limits; the percentile method was used instead