Biochem Genet (2005)
Understanding the population genetic structure is a prerequisite for conservation of a species. The degree of genetic variability characteristic of the mitochondrial DNA control region has been widely exploited in…
Construction of ethogram of the captive Yangtze finless porpoises, Neophocaena phocaenoides asiaeorientalis
Xiao, J.; Wang, D.
Acta Hydrobiologica Sinica (2005)
Quantitative study of behavior should be preceded by precise description and definition of behavior. Therefore, an ethogram, which includes the comprehensive descriptions of the characteristic behavior of a species, should…
New stereo acoustic data logger for free-ranging dolphins and porpoises
Akamatsu, Tomonari; Matsuda, Akihiko; Suzuki, Shiro; Wang, Ding; Wang, Kexiong; Suzuki, Michihiko; Muramoto, Hiroyuki; Sugiyama, Naoki; Oota, Katsunori
Marine Technology Society Journal (2005)
To observe the bio-sonar behavior of dolphins and porpoises, a miniature stereo acoustic data logger was developed to record the echolocation clicks of small cetaceans. The 'A-tag' device is small…
Distribution and abundance of finless porpoise in the Inland Sea of Japan
Shirakihara, Kunio; Shirakihara, Miki; Yamamoto, Yoshiteru
Marine Biology (2006)
Aerial sighting surveys were conducted in 2000 to evaluate the distribution and abundance of finless porpoise Neophocaena phocaenoides in the Inland Sea of Japan. We flew 60 north–south transects (2,218…
Reproductive seasonality and maturity of male Neophocaena phocaenoides asiaeorientalis in captivity: A case study based on the hormone evidence
Daoquan, Chen; Yujiang, Hao; Qingzhong, Zhao; Ding, Wang
Marine and Freshwater Behaviour and Physiology (2006)
To provide hormone evidence on reproductive seasonality and maturity of the Yangtze finless porpoise, the authors monitored the monthly variations of serum reproductive hormones of a male Yangtze finless porpoise…
Review on breeding biology of Yangtze finless porpoise (Neophocaena phocaenoides asiaeorientalis)
Hao, Yujiang; Wang, Ding; Zhang, Xianfeng
Acta Theriologica Sinica (2006)
There are three Neophocaena phocaenoides subspecies recognized in Chinese waters: South China Sea population, N. p. phocaenoides; Yellow Sea population, N. p. sunameri; and Yangtze population, N. p. asiaeorientalis. The…
Mercury concentrations in Yangtze finless porpoises (Neophocaena phocaenoides asiaeorientalis) from eastern Dongting Lake, China
Dong, Wei-Wei; Xu, Ying; Wang, Ding; Hao, Yu-Jiang;
Fresenius Environmental Bulletin (2006)
Mercury concentrations in some key tissues (liver, kidney, small intestine, stomach, blubber and brain) of five Yangtze finless porpoises (Neophocaena phocaenoides asiaeorientalis), accidentally died in the Eastern Dongting Lake of…
The phylogenetic relationships and biogeography of true porpoises (Mammalia: Phocoenidae) based on morphological data
Fajardo-Mellor, Liliana; Berta, Annalisa; Brownell, Robert L.; Boy, Claudia C.; Goodall, R. Natalie P.
Marine Mammal Sci (2006)
Prior studies of phylogenetic relationships among phocoenids based on morphology and molecular sequence data conflict and yield unresolved relationships among species. This study evaluates a comprehensive set of cranial, postcranial,…
Geographical distribution of polybrominated diphenyl ethers (PBDEs) and organochlorines in small cetaceans from Asian waters
Kajiwara, Natsuko; Kamikawa, Satoko; Ramu, Karri; Ueno, Daisuke; Yamada, Tadasu K.; Subramanian, Annamalai; Lam, Paul K. S.; Jefferson, Thomas A.; Prudente, Maricar; Chung, Kyu-Hyuck; Tanabe, Shinsuke
Chemosphere (2006)
Polybrominated diphenyl ethers (PBDEs) are one of the flame retardants widely used in plastics, textiles, electronic appliances, and electrical household appliances. In this study, PBDEs and organochlorine compounds (OCs) were…
Comparison of echolocation behaviour between coastal and riverine porpoises
Akamatsu, Tomonari; Teilmann, Jonas; Miller, Lee A.; Tougaard, Jakob; Dietz, Rune; Wang, Ding; Wang, Kexiong; Siebert, Ursula; Naito, Yasuhiko
Deep Sea Research Part II: Topical Studies in Oceanography (2007)
Echolocation behaviour of a harbor porpoise and six finless porpoises was recorded in open-water systems using acoustic data loggers (A-tag). In total 1359 click trains were recorded during 4.6 h…