Results 171 to 180 of about 3,607 (212)
Marsopa – Phocoena phocoena (Linnaeus, 1758)
, 2017 Mamíferos - Orden Cetacea - Familia Phocoenidae en la Enciclopedia Virtual de Vertebrados Españoles, http://www.vertebradosibericos.org/.
López Fernández, Alfredo +2 more
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Group hunting in harbour porpoises (Phocoena phocoena)
Canadian Journal of Zoology, 2021 Cooperative hunting involves individual predators relating in time and space to each other’s actions to more efficiently track down and catch prey. The evolution of advanced cognitive abilities and sociality in animals are strongly associated with cooperative hunting abilities as has been shown in lions, chimpanzees, and dolphins.
Ortiz, Sara Torres; id_orcid 0000-0003-1065-9194 +4 more
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Acoustic reflectivity of a harbor porpoise Phocoena phocoena
The Journal of the Acoustical Society of America, 2019Acoustic backscatter measurements were conducted on a stationary harbor porpoise (Phocoena phocoena) under controlled conditions. The measurements were made with the porpoise in the broadside aspect using three different types of signals as follows: (1) a 475-ms linear frequency-modulated (FM) pulse with a frequency range from 23 to 160 kHz; (2) a ...
Whitlow W L, Au +2 more
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Mechanical properties of the harbor porpoise lung, Phocoena phocoena
Respiration Physiology, 1979The pressure-volume and pressure-flow characteristics of the excised lungs of 5 harbor porpoise were determined. It was found that: (1) in comparison to terrestrial mammals the lung volume relative to body weight is large, (2) the lungs are capable of emptying to less than 17% of total lung capacity, (3) peak expiratory flowrates of 5 to 10 vital ...
G L, Kooyman, E E, Sinnett
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Evoked potentials of the auditory cortex of the porpoise,Phocoena phocoena
Journal of Comparative Physiology A, 1986Evoked potential (EP) recordings in the auditory cortex of the porpoise, Phocoena phocoena, were used to obtain data characterizing the auditory perception of this dolphin. The frequency threshold curves showed that the lowest EP thresholds were within 120-130 kHz. An additional sensitivity peak was observed between 20 and 30 kHz.
V V, Popov, T F, Ladygina, , Supin AYa
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Mycotic Otitis Media in a Harbour Porpoise (Phocoena phocoena)
Journal of Comparative Pathology, 2010A 9-year-old by-caught harbour porpoise (Phocoena phocoena) was subject to routine post-mortem examination. Major findings included parasitic infection (Stenurus minor) of the left middle ear and severe mycotic infection of the right middle ear. The morphological appearance of the causative organism was consistent with Aspergillus fumigatus.
H, Seibel, A, Beineke, U, Siebert
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Hiatal Hernia in a Harbor Porpoise (Phocoena phocoena)
Journal of Wildlife Diseases, 1993We observed the displacement of the first compartment of the stomach through the diaphragmatic hiatus into the thoracic cavity in an immature harbor porpoise (Phocoena phocoena). This hiatal hernia, coupled with a severe pneumonia, contributed to the emaciation and death of the animal.
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Click Structure in the Porpoise, Phocoena phocoena
Journal of Mammalogy, 1969The phonation of Phocoena phocoena consists of low intensity, narrow-band clicks usually near 2 kilohertz, produced singly or in bursts at repetition-rates as great as about 1000 per second. the higher repetition-rates show as harmonic bands in spectral analysis when relatively narrow analyzing filters are used. Many clicks contain variable emphasis at
William E. Schevill +2 more
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The stomach of the harbor porpoise Phocoena phocoena (L.)
Canadian Journal of Zoology, 1972The morphological and cytological characteristics of the stomach of the harbor porpoise (Phocoena phocoena (L.)) are described from dissections and histological preparations. The stomach consists of the following three compartments: forestomach, with keratinized stratified squamous epithelium and well-developed muscularis externa; main stomach, with ...
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