01704nas a2200181 4500008004100000245007400041210006900115260004800184520112800232653001501360653001501375653002201390653001401412653001601426653001201442100002701454856004101481 2019 eng d00aDoes body size predict the buzz-pollination frequencies used by bees?0 aDoes body size predict the buzzpollination frequencies used by b aNassaub University of The Bahamasc09/20193 a

We investigated the influence of body size in a specialized pollination system (buzz- pollination) where bees vibrate flowers to release pollen concealed within poricidal stamens (Buchmann, 1983; De Luca & Vallejo-Marín, 2013). Specifically, we explored how body size influences the frequency of buzz-pollination vibrations. Body size is expected to affect frequency as a result of the physical constraints it places on the indirect flight muscles that control the production of floral vibrations (King & Buchmann, 2003). Larger insects beat their wings less rapidly than smaller-bodied insects when flying (Unwin & Corbet, 1984), but whether similar scaling relationships exist with floral vibrations has not been widely explored. This is important because buzz pollinated flowers are hypothesized to be sensitive to certain frequencies that maximize the release of pollen from anthers (Harder & Barclay, 1994). Therefore, if body size affects the range of frequencies a bee may generate this could limit the types of potential floral hosts that could be visited (Corbet & Huang, 2014).

10aAnthophila10abuzz-ratio10afloral vibrations10afrequency10aPedicularis10aSolanum1 aDe Luca, Paul, Anthony uhttps://bio.acousti.ca/da/node/5800202406nas a2200193 4500008004100000245011900041210006900160520176100229653003401990653001702024653001402041653001702055653001702072100002102089700002302110700003002133700002202163856002702185 2019 eng d00aVocal Response of Oriental Magpie Robin (Copsychus saularis) to Urban Environmental Factors in Peninsular Malaysia0 aVocal Response of Oriental Magpie Robin Copsychus saularis to Ur3 a

Anthropogenic noise and changes in environmental gradients resulted from urbanisation have been shown to alter vocalisation of urban birds in previous studies. This study examined the vocalisation of the Oriental Magpie Robin (Copsychus saularis; locally known as Murai Kampung) in relation to anthropogenic noise and environmental factors in the urban, suburban and rural areas in Peninsular Malaysia. We measured four ambient factors (i.e. ambient noise, temperature, relative humidity and light intensity) and two landscape factors (i.e. distance to building and distance to major roads) between January and June 2017 from six locations. A total of 147 recordings comprising territorial songs of the bird were obtained and transcribed into spectrograms. Six parameters, namely low frequency, high frequency, frequency ranges, length of strophe, number of elements per strophe, and time interval between strophes were derived from spectrograms for each recording. In urban areas, low frequency of the songs was found to have increased significantly as compared to those recorded in suburban and rural areas. The difference in noise, temperature and relative humidity in urban and suburban environment had led to both single and interaction effects towards the Oriental Magpie Robin’s song parameters, i.e. low frequency, length of strophe, time interval between strophes and number of elements per strophe. The results evidenced the ability of the Oriental Magpie Robin in regulating and altering their song structure according to its surrounding environment. This implies its vocal plasticity which is important in ensuring the efficiency in transmission of songs and is likely to explain why the bird is less susceptible to urbanisation.

10aAmbient and landscape factors10abird species10afrequency10aurbanisation10avocalisation1 aHanafi, Shafinaz1 aChong, Leong, Puan1 aMaruthaveeran, Sreetheran1 aYeong, Kok, Loong uhttp://www.ukm.my/jsm/02524nas a2200361 4500008004100000245012900041210006900170520132900239653002801568653001501596653001501611653002301626653001401649653001101663653001501674653001701689653003401706653001801740100002201758700002701780700002501807700003101832700002901863700001701892700003201909700002101941700001901962700002601981700003102007700002002038700001602058856008802074 2019 eng d00aMolossid unlimited: extraordinary extension of range and unusual vocalization patterns of the bat, Promops centralisAbstract0 aMolossid unlimited extraordinary extension of range and unusual 3 a

The big crested mastiff bat, Promops centralis, occurs in Central and South America, but knowledge of its ecology is limited due to its open space hunting strategy, making captures extremely challenging. Notwithstanding, members of the species produce echolocation calls that are easy to identify. After recording calls of P. centralis 1,500 km away from its known range in Brazil, we hypothesized that the distribution range of this species was probably greatly underestimated. To improve the accuracy of P. centralis’ real distribution, we employed acoustic surveys throughout parts of Brazil, conducted after a bibliographic review to gather additional records, and used MaxEnt to model the species’ potential distribution. We have found that P. centralis has a much wider distribution in South America than previously thought, adding more than 3.8 million km2 to its former known area. We also describe an unusual vocalization pattern of P. centralis, with individuals emitting at least three very distinct but highly variable calls. This study shows that bioacoustic surveys and species distribution models can complement traditional methodologies in studying species that are difficult to capture, such as P. centralis, potentially contributing to more effective conservation and management plans.

10abig crested mastiff bat10aChiroptera10aduty cycle10aecholocation calls10afrequency10aMaxEnt10aMolossidae10aSocial calls10aspecies distribution modeling10avocalizations1 aHintze, Frederico1 aArias-Aguilar, Adriana1 aDias-Silva, Leonardo1 aDelgado-Jaramillo, Mariana1 aSilva, Carina, Rodrigues1 aJucá, Thays1 aMischiatti, Francyne, Lyrio1 aAlmeida, Márcio1 aBezerra, Bruna1 aAguiar, Ludmilla, M S1 aPereira, Maria, João Ramo1 aBernard, Enrico1 aLoeb, Susan uhttps://academic.oup.com/jmammal/advance-article/doi/10.1093/jmammal/gyz167/5637356