Results 61 to 70 of about 15,200 (213)

Efficient Masked Autoencoder for Birdsong Representation with Applications on Wild Bird Species Classification

open access: yesIntegrative Zoology, EarlyView.
Research on mosquito feeding preferences and the malaria parasites they transmit is essential for understanding the interactions between hosts, vectors, and parasites. In this study, vertebrate hosts were identified in 72 mosquitoes. Most blood meals (58.7%) came from birds, representing 25 species, while 40.0% came from mammals (13 species), and 1.3 ...
Qin Zhang   +8 more
wiley   +1 more source

The ultrasonic nonlinearity parameter for biological media

open access: yesArchives of Acoustics, 2015
The nonlinearity parameter B/A of several soft tissues was measured using two independent methods. The B/A values of most soft tissues were found to be between 7 and 8, with the exception of fat which has a B/A value close to 11.
F. DUNN, W. K. LAW, L. A. FRIZZELL
doaj  

Vocal usage learning and vocal comprehension learning in harbor seals

open access: yesBMC Neuroscience
Background Which mammals show vocal learning abilities, e.g., can learn new sounds, or learn to use sounds in new contexts? Vocal usage and comprehension learning are submodules of vocal learning.
Diandra Duengen   +2 more
doaj   +1 more source

The voice from the hereafter: vocalisations in three species of Atelopus from the Venezuelan Andes, likely to be extinct [PDF]

open access: yesHerpetozoa, 2019
Atelopus is a species-rich group of Neotropical bufonids. Present knowledge on bioacoustics in this genus is relatively poor, as vocalisations have been described in only about one fifth of the ca. 100 species known.
Stefan Lötters   +4 more
doaj   +3 more sources

Sperm whales in the waters off China: A glimpse of the past and present

open access: yesWater Biology and Security, 2023
Spatiotemporal information is crucial for cetacean research and conservation, particularly for wide-ranging and migratory species. Sperm whales (Physeter macrocephalus) are distributed worldwide in deep oceans; however, little is known about the species ...
Mingming Liu, Mingli Lin, Songhai Li
doaj   +1 more source

A new Gephyromantis (Phylacomantis) frog species from the pinnacle karst of Bemaraha, western Madagascar [PDF]

open access: yes, 2011
We describe a new mantellid frog of the subfamily Mantellinae from the karstic Bemaraha Plateau, western Madagascar. The new species belongs to the genus Gephyromantis, subgenus Phylacomantis, which previously included G. azzurrae, G.
Crottini, Angelica   +7 more
core   +2 more sources

The Climate Niche Pressure on the Yunnan–Guizhou Plateau Predominates the Diversification of Advertisement Calls in Frogs (Leptobrachella)

open access: yesIntegrative Zoology, EarlyView.
The diversification of advertisement calls is largely driven by climatic niche differentiation. Our results provide acoustic evidence for studies on ecological speciation in anurans.
Tuo Shen   +7 more
wiley   +1 more source

Low Survivals and Rapid Demographic Decline of a Threatened Estuarine Delphinid

open access: yesFrontiers in Marine Science, 2022
Beibu Gulf’s (BBG) Indo-Pacific humpback dolphins present both a genetic differentiation and phenotypical differences from conspecifics from other areas of the South China Sea.
Wenzhi Lin   +10 more
doaj   +1 more source

Acoustic indices are not useful for biodiversity research

open access: yesMethods in Ecology and Evolution, EarlyView.
Abstract Biodiversity assessment using passive acoustic monitoring has historically been challenging due to the limited availability of multi‐species acoustic detectors. In this context, acoustic indices were introduced as an alternative way to represent species diversity in acoustic datasets.
Larissa S. M. Sugai   +6 more
wiley   +1 more source

Automatic large-scale classification of bird sounds is strongly improved by unsupervised feature learning [PDF]

open access: yes, 2014
This is an Open Access article distributed in accordance with the terms of the Creative Commons Attribution (CC BY 4.0) license, which permits others to distribute, remix, adapt and build upon this work, for commercial use, provided the original work is ...
Plumbley, MD, Stowell, D
core   +2 more sources

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