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16 results for “Ziphius cavirostris”
Fig. 1. a in First report on Phyllobothrium delphini infection and Crassicauda sp. parasitism resulting in osseous metaplasia in a Cuvier's beaked whale (Ziphius cavirostris) from the Brazilian region
Fig. 1. a Infected adipous tissue. Phyllobothrium delphini located in the center of the well-delimited parasitic cyst. Inset: Phyllobothrium delphini displaying a whitish coloration and shiny appearance. Bar, 2 cm b Thoracic aorta artery displaying bone metaplasia. Radiographic image highlighting the strong radiopacity, similar to bone radiopacity, observed along all the artery walls. Bar, 15 cm c Parasitic cyst located in adipose tissue. Proliferating and reacting fibrous tissue with a moderate number of lymphocytes and plasmocytes located along the parasitic cyst wall. Numerous activated macrophages and multinucleated giant cell (black arrow) are visible around the P. delphini specimen displaying a degenerated cuticle (red arrow). Insert: Hight power field of inflammatory infiltrate with lymphocytes (black arrow) and plasma cells (red arrow). d Thoracic aorta artery displaying bone metaplasia. Mature bone tissue is organized as circumferential lamellae and cement line (red arrow). Note the erythrocytes within the blood vessel and adipose tissue in the medullar region of the detected bone metaplasia. Inset: Hight power field of bone metaplasia with osteocytes allocated in lacunae (black arrow). e Parasitized kidney. Crassicauda sp. involved by reactive fibrous tissue associated with inflammatory infiltrate. f Parasitized Kidney. High power field of nephritis associated with Crassicauda sp. Note the fibrosis and inflammatory infiltrate formed by macrophages (red arrow) and plasma cells (black arrow).. (For interpretation of the references to color in this figure legend, the reader is referred to the Web version of this article.)
Figure 1 in New records of Cuvier's beaked whales (Ziphius cavirostris) from the Turkish Levantine Sea
Figure 1. Sighting and stranding locations of beaked whales within the eastern Mediterranean Sea. The darker blue shade in the inset marks the course of Antalya Canyon. Gray dots represent sighting events; black dots represent stranding events. GRC – Greece; CYP – Cyprus; SYR – Syria; LBN – Lebanon; ISR – Israel; EGY – Egypt.
Figure 2 in New records of Cuvier's beaked whales (Ziphius cavirostris) from the Turkish Levantine Sea
Figure 2. Survey area showing both the predetermined transect lines for boat surveys and land stations in Antalya Bay. Area coverages of surveys are shown in gray.
Fig. 4. Phylogenetic analysis. Molecular analyses identified the specimens collected from CBW2 and CBW3 in Crassicaudiasis in three geographically and chronologically distant Cuvier's beaked whales (Ziphius cavirostris) stranded off Brazil
Fig. 4. Phylogenetic analysis. Molecular analyses identified the specimens collected from CBW2 and CBW3 as Crassicauda anthonyi, based on the ITS2 region, and supported by phylogenetic analysis. Analysis was performed by MEGA X 10.1 using the maximum likelihood method (1,000 bootstrap replicates) and included Habronema muscae as outgroup. GenBank accession numbers are listed along the species names. Branches with bootstrap support lower than 50% were collapsed. *Sequences obtained in this study.
Fig. 2 in Crassicaudiasis in three geographically and chronologically distant Cuvier's beaked whales (Ziphius cavirostris) stranded off Brazil
Fig. 2. The kidneys are heavily infected (A [CBW-2], B [CBW-1]) by male and female adult Crassicauda sp., which penetrate the wall of the renicular calyces, ureters, and adjacent vasculature. (C) Renal granuloma (ex situ) with coiled (sectioned) adult Crassicauda nematode segments. (D) Posterior extremity of female (upper specimen) and male (lower specimen; characteristic coiled tail).
Fig. 1 in Crassicaudiasis in three geographically and chronologically distant Cuvier's beaked whales (Ziphius cavirostris) stranded off Brazil
Fig. 1. Macroscopic features of arterial and renal crassicaudiasis in Cuvier's beaked whales (CBW; Ziphius cavirostris). (1) CBW-2. The mesenteric arteries (A, B) and caudal abdominal aorta (C) are hard, non-collapsible, tortuous, and dilated. Aa, abdominal aorta; Ma, mesenteric artery; Lu, lung.
Fig. 5 in Crassicaudiasis in three geographically and chronologically distant Cuvier's beaked whales (Ziphius cavirostris) stranded off Brazil
Fig. 5. Records of Crassicauda sp. in cetaceans stranded along the coast of Brazil including the three Cuvier beaked whales (Ziphius cavirostris) from this study, a pygmy sperm whale (Kogia breviceps) (Carvalho et al., 2010), and a Guiana dolphin (Sotalia guianensis) (Carvalho V.L., personal communication).
Data from: Long-term monitoring of <em>Ziphius cavirostris</em> behavior using 3D tracking from fixed hydrophone arrays off Southern California
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Data from: Abundance, survival, and annual rate of change in Cuvier's beaked whales (Ziphius cavirostris) on a Navy sonar range
<p>Bayesian mark-recapture estimates of survival, abundance, and trend are reported for Cuvier's beaked whales (<em>Ziphius cavirostris</em>) using a Navy training range off southern California. The deep-diving beaked whale family is exceptionally vulnerable to mid-frequency active sonar (MFAS), which has been implicated in mass strandings and altered foraging behavior. Extremely low sighting probabilities impede studies of population-level impacts of MFAS on beaked whales. The San Nicolas Basin hosts a Navy training range subject to frequent MFAS use and attracts high densities of <em>Z. cavirostris</em>. An eleven-year (2007–2018) photo-identification program leveraged automated acoustic detection and location capabilities on the range's 1,800-km<sup>2</sup> hydrophone array to enhance capture probability. Estimated population parameters for <em>Z. cavirostris </em>using the range included mean (90% credibility intervals) apparent annual survival of 0.950 (0.899–0.986), the annual number of individuals as 121 (71–219), and the annual rate of change of -0.8% (-5.6 – 4.1%). Simulations show the probability of detecting abundance changes is currently low, but can be greatly improved through continued monitoring and increased effort. Complementary data collection on habitat use and demographic rates in San Nicolas and surrounding basins is also essential to relating the direct effects of MFAS use to changes in vital rates and broader population outcomes.</p>
Ziphius cavirostris presence relative to vertical and temporal variability of oceanographic conditions in the southern california bight
<p>The oceanographic conditions of the Southern California Bight (SCB) dictate the distribution and abundance of prey resources and therefore the presence of mobile predators, such as goose-beaked whales (<em>Ziphius cavirostris</em>). Goose-beaked whales are deep-diving odontocetes that spend a majority of their time foraging at depth. Due to their cryptic behavior, little is known about how they respond to seasonal and interannual changes in their environment. This study utilizes passive acoustic data recorded from two sites within the SCB to explore the oceanographic conditions that goose-beaked whales appear to favor. Utilizing optimum multiparameter analysis, modeled temperature and salinity data are used to identify and quantify these source waters: Pacific Subarctic Upper Water (PSUW), Pacific Equatorial Water (PEW), and Eastern North Pacific Central Water (ENPCW). The interannual and seasonal variability in goose-beaked whale presence was related to the variability in El Niño Southern Oscillation events and the fraction and vertical distribution of the three source waters. Goose-beaked whale acoustic presence was highest during the winter and spring and decreased during the late summer and early fall. These seasonal increases occurred at times of increased fractions of PEW in the California Undercurrent and decreased fractions of ENPCW in surface waters. Interannual increases in goose-beaked whale presence occurred during El Niño events. These results establish a baseline understanding of the oceanographic characteristics that correlate with goose-beaked whale presence in the SCB. Furthering our knowledge of this elusive species is key to understanding how anthropogenic activities impact goose-beaked whales.</p>
Figure 3 in New records of Cuvier's beaked whales (Ziphius cavirostris) from the Turkish Levantine Sea
Figure 3. First sighted Cuvier's beaked whale individual, 4 June 2015, Antalya Bay.
Figure 4 in New records of Cuvier's beaked whales (Ziphius cavirostris) from the Turkish Levantine Sea
Figure 4. Second sighted Cuvier's Beaked whale individual, 18 June 2015, Antalya Bay.
Fig. 3 in Crassicaudiasis in three geographically and chronologically distant Cuvier's beaked whales (Ziphius cavirostris) stranded off Brazil
Fig. 3. Typical Crassicauda oval-shaped larvated (A, B) and embryonated (C) eggs in urine of CBW-2.
Data from: Abundance, survival, and annual rate of change in Cuvier's beaked whales (Ziphius cavirostris) on a Navy sonar range
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Ziphius cavirostris presence relative to vertical and temporal variability of oceanographic conditions in the southern california bight
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Data from: Diving behavior of Cuvier's beaked whales (Ziphius cavirostris) off Cape Hatteras, North Carolina
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