Coexistence of two sympatric and morphologically similar bat species Rhinolophus affinis and Rhinolophus pearsoni

Jiang, Tinglei; Jiang, Feng; Sun, Keping; Wang, Jing

doi:10.1016/j.pnsc.2007.12.005

Cited by 24 publications

(20 citation statements)

References 60 publications

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“…However, the role of competition in bat assemblages remains unclear. Some authors suggest that competition might structure bat communities and influence patterns of echolocation (Schoeman and Jacobs, 2008), but several disagree (Arita, 1997;Stevens and Willig, 1999;Jiang et al, 2008;Meyer and Kalko, 2008).…”

Section: Introductionmentioning

confidence: 99%

High duty cycle echolocation and prey detection by bats

Lazure

Fenton

2011

Journal of Experimental Biology

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SUMMARYThere are two very different approaches to laryngeal echolocation in bats. Although most bats separate pulse and echo in time by signalling at low duty cycles (LDCs), almost 20% of species produce calls at high duty cycles (HDCs) and separate pulse and echo in frequency. HDC echolocators are sensitive to Doppler shifts. HDC echolocation is well suited to detecting fluttering targets such as flying insects against a cluttered background. We used two complementary experiments to evaluate the relative effectiveness of LDC and HDC echolocation for detecting fluttering prey. We measured echoes from fluttering targets by broadcasting artificial bat calls, and found that echo amplitude was greatest for sounds similar to those used in HDC echolocation. We also collected field recordings of syntopic LDC and HDC bats approaching an insect-like fluttering target and found that HDC bats approached the target more often (18.6% of passes) than LDC bats (1.2% of passes). Our results suggest that some echolocation call characteristics, particularly duty cycle and pulse duration, translate into improved ability to detect fluttering targets in clutter, and that HDC echolocation confers a superior ability to detect fluttering prey in the forest understory compared with LDC echolocation. The prevalence of moths in the diets of HDC bats, which is often used as support for the allotonic frequency hypothesis, can therefore be partly explained by the better flutter detection ability of HDC bats. Supplementary material available online at

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Section: Introductionmentioning

confidence: 99%

High duty cycle echolocation and prey detection by bats

Lazure

Fenton

2011

Journal of Experimental Biology

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“…Here, as prey resources 189 were high and varied, Jiang et al, (2008) found that the coexistence of these Chinese bats observed, during the current study, for shores on the Yorkshire coast during winter sampling, which 226 may be due to the more saline conditions on this coast (Dooley, 1974) …”

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confidence: 53%

The mechanisms of intertidal fish coexistence: a model

Barrett

Johnson

Hull

2014

Preprint

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“…collected from 11 sites in the Indo-Malayan region (India, China, Myanmar, Malaysia) comprised more than 80 % coleopterans. Alternatively, the diet of Rhinolophus affinis from a cave in Jiangxi Province, China contained more than 50 % of Lepidoptera (Jiang et al 2008). While the diet of insectivorous bats is likely to be opportunistic, relying on the presence and density of prey species in the bats particular foraging area, this could suggest a larger proportion of aquatic insect species in the diet of Hipposideros compared to Rhinolophus bats, and may explain the increased exposure to mercury contamination of Hipposideros bats in our study areas.…”

Section: Discussionmentioning

confidence: 93%

“…most Lepidoptera, certain Coleoptera) (Bogdanowicz et al 1999;Fukui et al 2006). The limited studies of the diet of insectivorous bat species found in Malaysia (Hipposideros, Rhinolophus) suggest 1-4 % of the insects consumed have an aquatic larval stage (Thabah et al 2006;Jiang et al 2008). If mercury is present in aquatic insect prey, there should be accumulation of mercury in the tissues of insectivorous bats.…”

Section: Introductionmentioning

confidence: 99%

Mercury accumulation in bats near hydroelectric reservoirs in Peninsular Malaysia

et al. 2014

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In large man-made reservoirs such as those resulting from hydroelectric dam construction, bacteria transform the relatively harmless inorganic mercury naturally present in soil and the submerged plant matter into toxic methylmercury. Methylmercury then enters food webs and can accumulate in organisms at higher trophic levels. Bats feeding on insects emerging from aquatic systems can show accumulation of mercury consumed through their insect prey. In this study, we investigated whether the concentration of mercury in the fur of insectivorous bat species was significantly higher than that in the fur of frugivorous bat species, sampled near hydroelectric reservoirs in Peninsular Malaysia. Bats were sampled at Temenggor Lake and Kenyir Lake and fur samples from the most abundant genera of the two feeding guilds-insectivorous (Hipposideros and Rhinolophus) and frugivorous (Cynopterus and Megaerops) were collected for mercury analysis. We found significantly higher concentrations of total mercury in the fur of insectivorous bats. Mercury concentrations also differed significantly between insectivorous bats sampled at the two sites, with bats from Kenyir Lake, the younger reservoir, showing higher mercury concentrations, and between the insectivorous genera, with Hipposideros bats showing higher mercury concentrations. Ten bats (H. cf. larvatus) sampled at Kenyir Lake had mercury concentrations approaching or exceeding 10 mg/kg, which is the threshold at which detrimental effects occur in humans, bats and mice.

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Coexistence of two sympatric and morphologically similar bat species Rhinolophus affinis and Rhinolophus pearsoni

Cited by 24 publications

References 60 publications

High duty cycle echolocation and prey detection by bats

High duty cycle echolocation and prey detection by bats

The mechanisms of intertidal fish coexistence: a model

Mercury accumulation in bats near hydroelectric reservoirs in Peninsular Malaysia

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