What's the difference between cetacean and porpoise?

Cetacean


Definition:

  • (n.) One of the Cetacea.

Example Sentences:

  • (1) Wildlife campaigners say they oppose the keeping of cetaceans in captivity because these animals tend to have poor health and suffer stress-related illnesses as a result.
  • (2) We offer anatomical evidence for a two layer arterio-venous countercurrent heat exchanger at the cetacean testis.
  • (3) The Institute of Cetacean Research, a quasi-governmental body that oversees the hunts, had hoped to use sales from the meat to cover the costs of the whaling fleet's expeditions, she said.
  • (4) At the same time, cetaceans are under threat from a variety of pressures including direct and indirect takes, pollution, and competition for habitat and prey.
  • (5) Gross compositional data for milk samples of Tursiops truncatus, Sousa plumbea and Delphinus delphis are presented and compared with existing cetacean milk values.
  • (6) "We are totally against [weakening the original resolution]," said Aimee Leslie, WWF's global cetacean and marine turtle manager.
  • (7) This unit, which characterizes all delphinids, shows stringent hybridization homology with a 1,740-bp repeat that is characteristic of all other cetacean families.
  • (8) The Institute of Cetacean Research blamed low demand on the complicated auction procedure and reluctance among food suppliers to attract criticism from anti-whaling groups such as Sea Shepherd .
  • (9) "For 2013, the catch limits allow the slaughter of 16,655 small cetaceans, but our analysis of available scientific data raises very serious concerns about the sustainability of these hunts."
  • (10) The lipid components of porpoise lipokeratinocytes appear to subserve not only barrier function in a hypertonic milieu, but also underlie the unique buoyancy, streamlining, insulatory, and caloric properties exhibited as adaptations to the cetacean habitat.
  • (11) Parasites from 5 species of cetaceans are reported along with their possible role as a contributing factor in stranding behavior.
  • (12) Pontoporia is less specialized in its shoulder anatomy that most delphinid cetaceans, and shares several characteristics with some mysticetes.
  • (13) The tandemly organized common cetacean component, which comprises a large portion of all cetacean--both odontocete (toothed whale) and mysticete (whalebone whale)--genomes has a repeat length of 1,760 bp and the three clones analysed showed a high degree of conformity.
  • (14) Seventeen specimens representing nine cetacean genera (Delphinus, Stenella, Tursiops, Grampus, Delphinapterus, Globicephala, Kogia, Mesoplodon, and Phocoena) were studied post mortem.
  • (15) The sequence difference between human and the whale and human and the cow was at the same level, indicating that the rate of evolution of the mtDNA rRNA genes is about the same in artiodactyls and cetaceans.
  • (16) As air breathers that are inseparably tied to the surface, cetaceans are highly trackable; they may thus help in the monitoring of habitat degradation and other long-term ecologic change.
  • (17) Our observations indicate that these RIAs can reliably detect serum FSH and LH from bottlenosed dolphins and represent the first quantitation of these hormones in cetaceans.
  • (18) We sequenced the mitochondrial DNA D-loop regions from two cetacean species and compared these with the published D-loop sequences of several other mammalian species, including one other cetacean.
  • (19) The predominant cell of cetacean epidermis, not found in normal terrestrial mammals, is a lipokeratinocyte, which elaborates not only keratin filaments, but also two types of lipid organelles: first, lamellar bodies, morphologically identical to those of terrestrial mammals, are elaborated in great abundance in all suprabasal epidermal layers, forming intercellular lipid bilayers in the stratum corneum interstices: and second, non-membrane-bounded droplets appear and persist in all epidermal layers.
  • (20) I do not believe that scientific studies of whales (or any cetacean species) must be lethal in order to be effective for management and conservation of the species.

Porpoise


Definition:

  • (n.) Any small cetacean of the genus Phocaena, especially P. communis, or P. phocaena, of Europe, and the closely allied American species (P. Americana). The color is dusky or blackish above, paler beneath. They are closely allied to the dolphins, but have a shorter snout. Called also harbor porpoise, herring hag, puffing pig, and snuffer.
  • (n.) A true dolphin (Delphinus); -- often so called by sailors.

Example Sentences:

  • (1) Using the evoked potential technique, studies have been made on localization of the projectional sensory areas in the cerebral cortex (visual, acoustic and somatosensory) of the porpoise T. truncatus.
  • (2) However, the Whale and Dolphin Conservation Society said electronic pingers could already be used under current EU nature laws, which also protect porpoises from trawling, dredging, pile driving and noise from military sonars.
  • (3) Immunoperoxidase staining revealed the presence of morbillivirus antigen in a range of epithelia from both porpoises.
  • (4) Port Gaverne , a little cove near Port Isaac always described as "quaint", is a good place to watch seals (and occasional basking sharks, dolphins and porpoises), go fishing or rummage in rock pools.
  • (5) I would like to spend more time there because it’s very quiet, it’s very beautiful, you’re surrounded by nature, and as you look out across Kilbrannan Sound you can see schools of porpoises go past.
  • (6) The lipid components of porpoise lipokeratinocytes appear to subserve not only barrier function in a hypertonic milieu, but also underlie the unique buoyancy, streamlining, insulatory, and caloric properties exhibited as adaptations to the cetacean habitat.
  • (7) Thirty-six harbor porpoises, Phocaena phocaena, were caught off the coast of Southern New Brunswick and Nova Scotia as part of a study of the biology and ecology of these animals.
  • (8) Six harbor porpoises (Phocoena phocoena) found stranded on the coast of Northern Ireland in late 1988 were submitted to our laboratory for necropsy.
  • (9) The porpoise, an air-breathing mammal whose habits are entirely aquatic, presents special problems of respiration, sleep, and anesthesia.
  • (10) The critical period of limb development in southern minke whale was shown to be at a stage between that in the small sized species; Common Porpoise, Phocoena communis and Striped Dolphin, Prodelphinus caeruleoalbus, and in large one; Humpback Whale, Megaptera nodusa.
  • (11) Similar features in mechanisms of discrimination of paired impulses in man and porpoise are noted.
  • (12) Studies have been made on the oxygen consumption in different parts of the cardiac muscle, as well as in deep and subcutaneous muscles of the porpoise Phocaena phocaena.
  • (13) It differs from the myoglobins of the dolphin in 6, of the porpoise in 8, and of the sperm whale in 14 positions.
  • (14) Early foetuses of the harbour porpoise (46 and 65 mm CRL) already exhibited a variety of typical odontocete brain features, such as absence of olfactory bulb, thick cochlear nerve, and strong progression of brainstem structures.
  • (15) Lymphoid depletion was apparent in the spleen, thymus and lymph nodes of both porpoises.
  • (16) Using DNA analysis of the the bite wounds, a Dutch team examined 721 of 1,081 porpoises that were stranded between 2003 and 20013 along the Dutch coastline and found that nearly one in five had been killed by seals.
  • (17) Afterwards, head up to the nearby Iron Age hillfort at Bolt Tail for spectacular sunsets and the chance to spot dolphins and porpoises.
  • (18) He saw a shoal of porpoises and a stormy petrel skimming over the waves and read "Humboldt's glowing accounts of tropical scenery.
  • (19) Video captured last year appeared to show a grey seal eating a harbour porpoise off the coast of Pembrokeshire , while one study laid the blame for a series of mystery porpoise deaths off the Dutch coast on greys .
  • (20) They reported no further sightings until 10.40am, when they confirmed their boat Marine 2 was “following a pod of about five harbour porpoises in the Lambeth area of the river.” MPSonthewater (@MPSonthewater) Breaking #dolphin news.. Marine 2 are following a pod of about 5 harbour porpoises in the Lambeth area of the river.