| observations of vaginal calculi in dolphins. | vaginal calculi have been described from the common (delphinus delphis), pacific white-sided (lagenorhynchus obliquidens) and spotted (stenella attenuata) dolphins. we describe additional calculi found in six sexually mature d. delphis from southern california. three calculi were large (ca. 7 x 5 cm), exhibited concentric layer crystallization, and were unique from previously published descriptions. one calculus described previously and one in our sample appeared to be a fetal skeleton and skull ... | 1991 | 1920661 |
| the lungworm, halocercus spp. (nematoda: pseudaliidae) in cetaceans from california. | three cetaceans from monterey bay, california (usa), were infected with lung nematodes. a beaked whale calf, mesoplodon sp. was infected with adult halocercus sp. this represents a new host record for this nematode. the lungs of a northern right whale dolphin calf, lissodelphis borealis, contained an unidentified nematode similar in size to halocercus sp. the presence of phyllobothrium delphini-type cestode larvae in its blubber is evidence that the calf was feeding on invertebrates. a pregnant ... | 1993 | 8355360 |
| molecular phylogenetics and diagnosis of anisakis, pseudoterranova, and contracaecum from northern pacific marine mammals. | individual specimens of anisakis, pseudoterranova, and contracaecum collected from marine mammals inhabiting northern pacific waters were used for comparative diagnostic and molecular phylogenetic analyses. forty-eight new sequences were obtained for this study of 14 anisakis taxa, 8 pseudoterranova taxa, 4 contracaecum taxa, and 4 outgroup species. partial 28s (lsu) and complete internal transcribed spacer (its-1, 5.8s, its-2) ribosomal dna was amplified by the polymerase chain reaction and seq ... | 2005 | 16539026 |
| effects of high-seas driftnet fisheries on the northern right whale dolphin lissodelphis borealis. | the united nations (u.n.) resolutions concerning high-seas driftnets called for moratoria by july 1992, unless appropriate conservation measures could be enacted. the analyses presented here show that the population of northern right whale dolphin has been affected by driftnets and that no apparent conservation measures are available. a number of points emerge: (1) simple "worst-case" estimates of depletion highlight the importance of accurate estimates of population abundance. current abundance ... | 1993 | 27759313 |
| patterned burst-pulse vocalizations of the northern right whale dolphin, lissodelphis borealis. | vocalizations from the northern right whale dolphin, lissodelphis borealis, were recorded during a combined visual and acoustic shipboard survey of cetacean populations off the west coast of the united states. seven of twenty single-species schools of l. borealis produced click and pulsed vocalizations. no whistles were detected during any of the encounters. clicks associated with burst-pulse vocalizations were lower in frequency and shorter in duration than clicks associated with echolocation. ... | 2007 | 17348542 |
| isomer-specific accumulation and toxic assessment of polychlorinated biphenyls, including coplanar congeners, in cetaceans from the north pacific and asian coastal waters. | to elucidate the global distribution and toxicological impacts of polychlorinated biphenyls (pcbs) on cetaceans, the present study determined the concentrations of individual pcb congeners, including toxic non-ortho (iupac nos. 77, 126, 169) and mono-ortho (iupac nos. 105, 118, 156) coplanar congeners, in the blubber of 10 species of adult male odontocetes collected from several locations in the north pacific ocean and along coastal waters of japan, hong kong, the philippines, and india during 1 ... | 2000 | 10948292 |