Comparison of Sampling Methods for Inventory of Bat Communities

Flaquer, Carles; Torre, Isabel de la; Arrizabalaga, Antoni

doi:10.1644/06-mamm-a-135r1.1

Cited by 130 publications

(99 citation statements)

References 25 publications

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“…Only helminth species considered as component (prevalence ≥ 10%, Bush et al, 1997) were analysed and interpreted. The standardized residuals after the log-linear analyses were used to represent the degree of deviance from the null model (no associations between factors), and the statistical significance within levels of a factor was verified examining the components of maximum likelihood, comparing these values with the critical level of significance for 1 degree of freedom (Chi 2 = 3.84, P < 0.05) (Flaquer et al, 2007). Mean species richness and mean number of helminths per host depending on the treatment (burned and control) and the sex of the host were analysed with GLM (factorial twoway ANOVA), whereas tests on species abundance were performed with the Kruskal-Wallis test because of high parasite aggregation (Díaz & Alonso, 2003).…”

Section: Methodsmentioning

confidence: 99%

The helminth infracommunities of the wood mouse (Apodemus sylvaticus) two years after the fire in Mediterranean forests

et al. 2013

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SummaryParasites have been recognized as indicators for natural or man-induced environmental stress and perturbation. In this article, we investigated the role of two non-exclusive hypotheses on the response of helminths of wood mice to fire perturbation: 1) a reduction of the helminth infracommunity (species richness) in post-fire areas due to the temporal lack of worms with indirect (complex) life cycles linked to intermediate hosts that are more specialized than the final host, and 2) an increase of the abundance of helminths with direct (simple) life cycles as a response of increasing abundances of the final host, may be in stressful conditions linked to the post-fire recolonization process. We studied the helminth infracommunities of 97 wood mice in two recently burned plots (two years after the fire) and two control plots in Mediterranean forests of NE Spain. Species richness of helminths found in control plots (n = 14) was twice large than in burned ones (n = 7). Six helminth species were negatively affected by fire perturbation and were mainly or only found in unburned plots. Fire increased the homogeneity of helminth infracommunities, and burned plots were characterised by higher dominance, and higher parasitation intensity. We found a gradient of frequency of occurrence of helminth species according to life cycle complexity in burned areas, being more frequent monoxenous (66.6 %), than diheteroxenous (33.3 %) and triheteroxenous (0 %), confirming the utility of helminths as bioindicators for ecosystem perturbations. Despite the short period studied, our results pointed out an increase in the abundance and prevalence of some direct life cycle helminths in early postfire stages, whereas indirect life cycle helminths were almost absent. A mismatch between the final host (that showed a fast recovery shortly after the fire), and the intermediate hosts (that showed slow recoveries shortly after the fire), was responsible for the loss of half of the helminth species.

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Section: Methodsmentioning

confidence: 99%

The helminth infracommunities of the wood mouse (Apodemus sylvaticus) two years after the fire in Mediterranean forests

et al. 2013

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“…Future studies should focus on significantly increasing the number of sampling sites so that diversity could be analysed as counts and proportions. This should be done using several combinations of approaches (e.g., Flaquer et al 2007, Fischer et al 2009), and not only by using automatic recording devices for only on a single night per site, which would have some evident drawbacks (e.g., Collins and Jones 2009, Fischer et al 2009, Matos et al 2013, see also Adams et al 2012). Trapping and sexing of bats and searching for maternity roosts should be conducted to more precisely identify boundaries for reproduction in all occurring species at mean July temperatures below 13°C.…”

Section: Discussionmentioning

confidence: 99%

Summer temperature and precipitation govern bat diversity at northern latitudes in Norway

Michaelsen

2016

Mammalia

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This study investigated bat diversity in a temperature and precipitation gradient in fiord and valley landscapes of western Norway about 62° N. Equipment for automatic recording of bat calls was distributed in areas ranging from lowlands to alpine habitats with a mean July temperature range of 8-14°C. A general description of species distribution was given and diversity was analysed using both a generalised linear model (GLM) and a mixed-effects model (GLMM). With regard to the sampling design, the data were analysed on a binary scale, where presence or absence of any species other than the northern bat Eptesicus nilssonii is included. Models including temperature and precipitation explain 79% (GLM) to 91% (GLMM) of the overall variation in bat diversity. In subalpine and alpine areas with temperature below 10°C, only the northern bat was found. This species also forms maternity roosts where mean July temperatures are as low as 11°C and 10°C, below July temperatures found in the warmest areas beyond the Arctic Circle.

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“…Thus, we tested a three-way log-linear model that included species, intensity and locality as the main factors. The standardised residuals after the log-linear analysis were used to represent the degree of deviance from the null model (no associations between factors); the statistical significance within levels of a factor was verified examining the components of maximum likelihood, comparing these values with the critical level of significance for 1 degree of freedom (χ 2 = 3.84, p<0.05) (Flaquer et al 2007).…”

Section: Methodsmentioning

confidence: 99%

Helminth parasites in native and invasive mammal populations: comparative study on the Barbary ground squirrel Atlantoxerus getulus L. (Rodentia, Sciuridae) in Morocco and the Canary Islands

López-Darias¹,

Ribas²,

Feliú

2008

Acta Parasitologica

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A total of 51 and 21 adults of Barbary ground squirrels (Atlantoxerus getulus) were trapped during May-July 2006 from the introduced populations on Fuerteventura Island (Canary Islands) and the native populations in Morocco, respectively. One trematode, 1 cestode and 4 nematode species were recovered belonging to five families: Brachylaima sp. (Brachylaimidae), Catenotaenia chabaudi (Catenotaeniidae), Protospirura muricola (Spiruridae), Dermatoxys getula and Syphacia pallaryi (Oxyuuridae), and Trichostrongylus sp. (Trichostrongylidae). We report for the first time the presence of P. muricola, Trichostrongylus sp. and Brachylaima sp. in A. getulus. Brachylaima sp. was found in the insular population only, as a result of a diet that includes snails. The two oxyurids were found at both sites. The continental population showed higher species richness (5 vs 3 species). This is the first report of helminth parasites from A. getulus from the Canary Islands.

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Comparison of Sampling Methods for Inventory of Bat Communities

Cited by 130 publications

References 25 publications

The helminth infracommunities of the wood mouse (Apodemus sylvaticus) two years after the fire in Mediterranean forests

The helminth infracommunities of the wood mouse (Apodemus sylvaticus) two years after the fire in Mediterranean forests

Summer temperature and precipitation govern bat diversity at northern latitudes in Norway

Helminth parasites in native and invasive mammal populations: comparative study on the Barbary ground squirrel Atlantoxerus getulus L. (Rodentia, Sciuridae) in Morocco and the Canary Islands

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