Results 101 to 110 of about 305 (140)

Behavioral laterality in Yangtze finless porpoises ( Neophocaena asiaeorientalis asiaeorientalis )

Behavioural Processes, 2017
The Yangtze finless porpoise (Neophocaena asiaeorientalis asiaeorientalis) is a critically endangered species with less than 1000 individuals expected to be left in the wild. While many studies have been conducted on laterality among several cetacean species, no studies investigating the Yangtze finless porpoise have been conducted.
Matthew K Pine, L G Yang, L G Yang
exaly   +3 more sources

INDIRECT EVIDENCE OF BOAT AVOIDANCE BEHAVIOR OF YANGTZE FINLESS PORPOISES

Bioacoustics, 2008
(2008). INDIRECT EVIDENCE OF BOAT AVOIDANCE BEHAVIOR OF YANGTZE FINLESS PORPOISES. Bioacoustics: Vol. 17, No. 1-3, pp. 174-176.
Samuel Turvey, Songhai Li, Tomonari Akamatsu   +2 more
exaly   +2 more sources

Distribution patterns of Yangtze finless porpoises in the Yangtze River: implications for reserve management

Animal Conservation, 2013
X. Zhao, D. Wang, S. T. Turvey, B. Taylor, T. Akamatsu   +4 more
exaly   +2 more sources

Thresholds of population persistence for the Yangtze finless porpoise: implications for conservation managements

Integrative Zoology, 2021
AbstractThe Yangtze finless porpoise (Neophocaena asiaeorientalis asiaeorientalis), a critically endangered species, is the only cetacean species in the Yangtze River following the functional extinction of baiji (Lipotes vexillifer). To inform conservation actions, two important questions need to be addressed: what is the threshold value of survival ...
Zhigang, Mei, Mao, Chen, Yi, Han, Yujiang, Hao, Jinsong, Zheng, Kexiong, Wang, Ding, Wang   +6 more
openaire   +2 more sources

An automatic identification algorithm of Yangtze finless porpoise

2015 IEEE International Conference on Signal Processing, Communications and Computing (ICSPCC), 2015
This paper describes the time-frequency features of the Yangtze finless porpoise acoustic signals firstly. Then an automatic identification algorithm for the Yangtze finless porpoise is presented based on Hilbert Huang Transform and BP artificial neural network. The algorithm includes two steps: feature extraction and signal identification.
Hongjian Song, Feng Xu, Bangyou Zheng, Ying Xiang, Juan Yang, Xudong An   +5 more
openaire   +1 more source

The Yangtze finless porpoise: On an accelerating path to extinction?

Biological Conservation, 2014
For the conservation of endangered animals to be effective, information on population distribution and abundance requires regular updating from census efforts. The Yangtze finless porpoise (Neophocaena asiaeorientalis asiaeorientalis) has recently been reclassified as critically endangered (CR) due to a rapid decline in abundance.
Zhigang Mei, Xinqiao Zhang, Shiang-Lin Huang, Xiujiang Zhao, Yujiang Hao, Lin Zhang, Zhengyi Qian, Jinsong Zheng, Kexiong Wang, Ding Wang   +9 more
openaire   +1 more source

An artificial intelligence recognition algorithm for Yangtze finless porpoise

OCEANS 2015 - MTS/IEEE Washington, 2015
Processing marine-mammal signals for species classification and monitoring of endangered marine mammals are problems that have recently attracted attention in the scientific literature. Currently, the detection of signals of interest is typically accomplished through a combination of visual inspection of spectrograms and listening to the data.
null Hongjian Song, null Feng Xu, null Bangyou Zheng, null Ying Xiang, null Juan Yang, null Xudong An   +5 more
openaire   +1 more source

Effects of fish community on occurrences of Yangtze finless porpoise in confluence of the Yangtze and Wanhe Rivers

Environmental Science and Pollution Research, 2015
The Yangtze finless porpoise is a subspecies of narrow-ridged finless porpoise endemic to the middle and lower reaches of the Yangtze River and the adjoining Poyang and Dongting Lakes. With the depletion of fish stocks in the Yangtze River in recent decades, food availability has become the most important factor affecting the survival of this ...
Xiaoke, Zhang, Daoping, Yu, Huili, Wang, An, Wan, Minmin, Chen, Feng, Tao, Zunrong, Song   +6 more
openaire   +2 more sources

The ontogeny of echolocation in a Yangtze finless porpoise (Neophocaena phocaenoides asiaeorientalis)

The Journal of the Acoustical Society of America, 2007
Acoustic and concurrent behavioral data from one neonatal male Yangtze finless porpoise (Neophocaena phocaenoides asiaeorientalis) in captivity were presented. The calf click train was first recorded at 22days postnatal, and the frequency of hydrophone-exploration behavior with head scanning motions in conjunction with emissions of click trains by the ...
Songhai, Li, Ding, Wang, Kexiong, Wang, Jianqiang, Xiao, Tomonari, Akamatsu   +4 more
openaire   +2 more sources

Ultrastructure of the Spermatozoa of the Yangtze Finless Porpoise (Neophocaena phocaenoides asiaeorientalis)

Anatomia, Histologia, Embryologia, 2009
SummarySemen sample was collected from two captive adult Yangtze finless porpoises (Neophocaena phocaenoides asiaeorientalis) during physical examination. One individual was aged about 9 years with body length 143 cm (total length) and body weight 46.1 kg in 2003. The age of the other was unknown and its body length was 147 cm and body weight was 43 kg
H Y, Li, X F, Zhang, D, Wang, D Q, Chen
openaire   +2 more sources