Results 101 to 110 of about 564 (134)
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Journal of Molecular Evolution, 2010
Sequence polymorphism at the MHC class II DRB locus was investigated in three finless porpoise (Neophocaena phocaenoides) populations in Chinese waters. Intragenic recombination and strong positive selection were the main forces in generating sequence diversity in the DRB gene.
Shixia Xu, Wenhua Ren, Kaiya Zhou
exaly +3 more sources
Sequence polymorphism at the MHC class II DRB locus was investigated in three finless porpoise (Neophocaena phocaenoides) populations in Chinese waters. Intragenic recombination and strong positive selection were the main forces in generating sequence diversity in the DRB gene.
Shixia Xu, Wenhua Ren, Kaiya Zhou
exaly +3 more sources
Distribution and abundance of finless porpoise in the Inland Sea of Japan
Marine Biology, 2006Aerial 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 km in total) at intervals of 6.43 km over the study area between 131°3′ and 134°59′ E. In total, 148 groups were detected by two observers. The average
Kunio Shirakihara +2 more
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Directivity control of underwater sound reception inspired by the finless porpoise
The Journal of the Acoustical Society of AmericaThe exceptional sound reception capabilities of odontocetes provide valuable inspiration for the design of advanced directional acoustic systems. Inspired by the sound reception system of the finless porpoise (Neophocaena asiaeorientalis sunameri), we developed a biomimetic receiver comprising artificial analogs of the mandible, external mandibular fat,
Wenzhan Ou +6 more
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Simultaneous production of low- and high-frequency sounds by neonatal finless porpoises
The Journal of the Acoustical Society of America, 2008Phocoenids are generally considered to be nonwhistling species that produce only high-frequency pulsed sounds. Here our results show that neonatal finless porpoises (Neophocaena phocaenoides) frequently produce clear low-frequency (2–3kHz) pulsed signals, without distinct high-frequency energy, just after birth and can produce both low- (2–3kHz) and ...
Songhai, Li +4 more
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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 +4 more
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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 +4 more
openaire +2 more sources
Sequence variability at three MHC loci of finless porpoises (Neophocaena phocaenoides)
Immunogenetics, 2007Major histocompatibility complex (MHC) class II DQB and DRA genes and class I gene of finless porpoises (Neophocaena phocaenoides) were investigated by single-strand conformation polymorphism and sequence analysis. The DRA, DQB, and MHC-I loci each contained 5, 14, and 34 unique sequences, respectively, and considerable sequence variation was found at ...
Shixia, Xu +3 more
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Population status, threats and conservation of the Yangtze finless porpoise
Science Bulletin, 2009The Yangtze finless porpoise (Neophocaena phocaenoides asiaeorientalis) is currently limited to the middle and lower reaches of the Yangtze River from Yichang to Shanghai, China, and the adjoining Poyang and Dongting Lakes. Its population size has decreased remarkably during the last several decades due to the heavy impact of human activities ...
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Journal of Comparative Pathology, 2009
An adult male finless porpoise (Neophocaena phocaenoides) kept in an aquarium in Japan displayed loss of appetite and reduced body weight over several months. Necropsy examination revealed the presence of lesions in the pericardium, lung, and mediastinal and pancreatico-duodenal lymph nodes.
M, Naota +5 more
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An adult male finless porpoise (Neophocaena phocaenoides) kept in an aquarium in Japan displayed loss of appetite and reduced body weight over several months. Necropsy examination revealed the presence of lesions in the pericardium, lung, and mediastinal and pancreatico-duodenal lymph nodes.
M, Naota +5 more
openaire +2 more sources
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
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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