01867nas a2200193   4500008004100000245009600041210006900137300001200206490000600218520129500224653001601519653002301535653001001558653001501568653001201583100002001595700001701615856004101632       2022                        eng d00aBioacoustic description of the alarm call of the stump-tailed porcupine (Coendou rufescens)0 aBioacoustic description of the alarm call of the stumptailed por  a198-2030 v33 a<p>Acoustic communication in rodents is complex and varied. However, bioacoustic studies of rodents in the wild are limited and scarce, most are performed, under controlled laboratory conditions. We recorded the alarm call of the short-tailed porcupine in the wild for the first time. Recordings were obtained in Guabisai, Sangay National Park, Ecuador. We opportunistically recorded the alarm call of an adult female Coendou rufescens in a direct encounter during its capture process. We analyzed 37 notes of 21 calls, categorizing the notes into 4 different types based on their spectral, temporal, and intensity characteristics (i.e., fundamental, dominant and harmonic frequencies). The alarm call of C. rufescens consists of up to 4 notes. The sounds vary, ranging from chirps to nasal sounds, with the dominant frequency ranging from 0.34-2.50 kHz. The notes have different spectral and temporal characteristics. Therefore, the alarm call of C. rufescens presents a repertoire with different types of notes. Our preliminary observations suggest that their different types of sound are probably associated with anti-predatory behaviors, therefore we considered these sounds as alarm calls. This report provides baseline information for future bioacoustic studies on this species.</p>
10aalarm calls10adominant frequency10anotes10arepertoire10aRodents1 aBatallas, Diego1 aBrito, Jorge  uhttps://bio.acousti.ca/fr/node/5848201591nas a2200205   4500008004100000245006900041210006900110260001600179520096600195653002101161653001901182653002901201653001501230653002101245653001001266100002101276700002801297700001701325856004301342       2018                        eng d00aIncorporating tides into the acoustic ecology of humpback whales0 aIncorporating tides into the acoustic ecology of humpback whales  cOct-10-20193 a<p>North Pacific humpback whales (Megaptera novaeangliae) migrate annually to foraging grounds in Southeast Alaska that are characterized by semidiurnal tidal cycles. Tidal activity is an important driver of marine mammal behavior on foraging grounds, but is often omitted in studies of acoustic ecology. To better understand the role of sound in this vocal species we investigated the influence of tidal height and direction on humpback whale nonsong calling behavior in Frederick Sound and described new call types for this population. The likelihood of detecting a call from the low‐frequency‐harmonic, pulsed, or noisy‐complex call classes was independent of tidal activity. The likelihood of detecting a call from the tonal call class, and a feeding call in particular, was 2.1 times higher during flood tides than during ebb tides (95% CI 1.1&ndash;4.4). This likely reflects an indirect relationship between humpback whale foraging and tides.</p>
10aacoustic ecology10ahumpback whale10aMegaptera novaean- gliae10arepertoire10aSoutheast Alaska10atides1 aBarlow, Dawn, R.1 aFournet, Michelle, E.H.1 aSharpe, Fred  uhttp://doi.wiley.com/10.1111/mms.12534