Relevant bibliographies by topics / Northern right whales Northern right whales Whales

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Academic literature on the topic 'Northern right whales Northern right whales Whales'

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Published: 4 June 2021
Last updated: 11 February 2022

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Journal articles on the topic "Northern right whales Northern right whales Whales"

1

Taylor, Cynthia R., and William B. Brooksm. "Dissemination of Northern Right Whale (Eubalaena glacialis) Sighting Information to the Southeast U.S. Maritime Community." Marine Technology Society Journal 36, no. 2 (2002): 58–60. http://dx.doi.org/10.4031/002533202787914089.

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Northern right whales (Eubalaena glacialis) are vulnerable to injury and mortality caused by vessel strikes. In an effort to prevent vessel strikes in the southeastern U.S. calving ground, a communication network was implemented to relay right whale sighting information, gathered by aerial survey teams, to mariners in the area. The system, which has evolved substantially since inception, now provides real-time sighting information to the marine community, thus assisting with avoidance of northern right whales. The current system utilizes 25 cloned alphanumeric pagers distributed to various state, federal, military, and industry representatives. Right whale sightings are reported and disseminated via the pagers, and ultimately via Navigational Telex (NAVTEX) to all ships 100 tons or larger in southeastern waters. This system has been successful in alerting mariners to the presence of right whales, however to address the critical management problems confronting this highly endangered species, further research into technological advancements that may assist in the detection of right whales should be encouraged.
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Silber, Gregory K., Michael W. Newcomer, and Héctor Pérez-Cortés M. "Killer whales (Orcinus orca) attack and kill a Bryde's whale (Balaenoptera edeni)." Canadian Journal of Zoology 68, no. 7 (1990): 1603–6. http://dx.doi.org/10.1139/z90-238.

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On 3 May 1988, we observed a group of killer whales that pursued, killed, and partially consumed a Bryde's whale in the northern Gulf of California, Mexico (31°01′N, 114°15′W). The attack was observed from 06:54 to 08:53 while circling in a single-engine aircraft at an altitude of 160 m. The group comprised about 15 killer whales, including two adult males and at least two calves. Females and (or) subadult males pressed the attack most intently. The killer whales tore skin and blubber from the right flank of the Bryde's whale, and on 11 occasions the killer whales swam onto the head or back of the Bryde's whale, which hindered its breathing. The respiration intervals of the Bryde's whale were short and irregular, and blow rates differed significantly from those of undisturbed Bryde's whales. Fatiguing the whale may have facilitated an easier kill by asphyxiation. After the death of the Bryde's whale, the two adult male killer whales surfaced slowly about 200–300 m away from the remainder of the group, which presumably fed on the submerged Bryde's whale carcass. Two days later, the drifting Bryde's whale carcass was located. A large wound was visible on the abdomen, and sections of the lower jaw had been removed. Like those of canids and some felids that hunt cooperatively when preying on ungulates, attacks by Orcinus orca exhibit coordination of activities and efficiency in dispatching prey.
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Schaeff, Catherine M., Scott D. Kraus, Moira W. Brown, Judy S. Perkins, Roger Payne, and Bradley N. White. "Comparison of genetic variability of North and South Atlantic right whales (Eubalaena), using DNA fingerprinting." Canadian Journal of Zoology 75, no. 7 (1997): 1073–80. http://dx.doi.org/10.1139/z97-129.

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The North Atlantic right whale (Eubalaena glacialis) is the most endangered large whale in the world and shows few signs of recovery despite over 60 years of protection. In contrast, the South Atlantic right whale (E. australis), a closely related species, appears to be recovering successfully. Using DNA extracted from skin biopsy samples and two hypervariable minisatellite probes, we compared the levels of genetic diversity within the two populations. Our results revealed that unrelated North Atlantic (NA) right whales exhibit significantly less genetic variation than unrelated South Atlantic (SA) right whales (Jeffreys 33.15 (J33.15) probe: SNA-U-observed = 0.56 versus SSA-U-observed = 0.37, p < 0.01; M13 probe: SNA-U-observed = 0.74 versus SSA-U-observed = 0.46, p < 0.01). The level of band sharing among unrelated North Atlantic right whales was greater than that predicted for second-degree-related South Atlantic right whales (J33.15: SNA-U-observed = 56 versus SSA-2°-expected = 0.53, p < 0.05; M13: SNA-U-observed = 0.74 versus SSA-2°-expected = 0.60, p < 0.01), indicating that the northern animals have lost a substantial amount of genetic variability. Observed band sharing among North Atlantic first-degree relatives was lower than expected, based on band sharing among unrelated animals (J33.15: SNA-1°-observed = 0.67 versus SNA-1°-expected = 0.78, p < 0.01; M13: SNA-1°-observed = 0.83 versus SNA-1°-expected = 0.87, p = 0.15). This suggests that the matings between closely related individuals that would have resulted in the higher band-sharing values were unsuccessful. These results, in conjunction with behavioral and population data which indicate that North Atlantic right whales may be suffering from reduced fertility, fecundity, and juvenile survivorship, support the hypothesis that inbreeding depression is influencing the recovery of this species.
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Baumgartner, Mark F., and Bruce R. Mate. "Summer and fall habitat of North Atlantic right whales (Eubalaena glacialis) inferred from satellite telemetry." Canadian Journal of Fisheries and Aquatic Sciences 62, no. 3 (2005): 527–43. http://dx.doi.org/10.1139/f04-238.

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Satellite-monitored radio tags were attached to North Atlantic right whales (Eubalaena glacialis) in Grand Manan Basin of the lower Bay of Fundy during the summer and early fall seasons of 1989–1991 and 2000. Monte Carlo tests were used to examine the distribution of the tagged whales in space and time and with respect to a variety of environmental variables to characterize right whale habitat on their northern feeding grounds. These environmental variables included depth, depth gradient, climatological surface and bottom hydrographic properties, and remotely sensed surface temperature, chlorophyll concentration, and their respective horizontal gradients. Site fidelity in the Bay of Fundy was very low during 1989–1991 and high during 2000. When the tagged animals left the Bay, they did not frequently visit the deep basins of the Gulf of Maine and Scotian Shelf, where abundances of their primary copepod prey, Calanus finmarchicus, are thought to be high. Instead, right whales visited areas characterized by low bottom water temperatures, high surface salinity, and high surface stratification. No evidence was found that the tagged right whales associated with oceanic fronts or regions with high standing stocks of phytoplankton.
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Figueiredo, Giovanna Corrêa e., Samara Cazzoli y. Goya, and Marcos César de Oliveira Santos. "Southern right whales in the South-western Atlantic Ocean: proposed criteria to identify suitable areas of use in poorly known reproductive grounds." Journal of the Marine Biological Association of the United Kingdom 99, no. 5 (2019): 1231–36. http://dx.doi.org/10.1017/s0025315418001042.

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AbstractUrbanization and intense vessel traffic in coastal areas are obstacles for right whales when selecting breeding and calving grounds. Human activities might be the main cause for the recently observed drop in right whale sightings along the south-eastern coast of Brazil. Information concerning the biology and the activities that can potentially affect the presence of individuals along the coast are essential for management purposes, as well as for the recovery of the species stocks after a period of whaling pressure. This study correlated the occurrence of right whales in the northern limit of the breeding ground in the South-western Atlantic Ocean with local geomorphology, degree of urbanization and oceanographic features to better identify suitable areas for use by these whales. The study area was divided into 14 sub-areas based on local coastal geomorphology and discharge of large rivers. The following five ranking criteria were applied to each sub-area: presence of whaling stations and whaling activity in the past; presence and activity of ports; protection from swell, coastal slope and composition of the bottom substrate. The sub-areas that offered conditions conducive to the presence of right whales received higher scores. The proposed criteria were validated by overlapping the ranking scores with the records of right whales sighted in each sub-area. In south-eastern Brazil, protected areas with sandy bottom and gentle slope were associated with more sightings of female-calf pairs. The criteria can be used as a primary diagnostic indicating suitable sub-areas for right whales in poorly known breeding grounds.
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Tsai, Cheng-Hsiu, Alberto Collareta, Erich M. G. Fitzgerald, et al. "Northern pygmy right whales highlight Quaternary marine mammal interchange." Current Biology 27, no. 19 (2017): R1058—R1059. http://dx.doi.org/10.1016/j.cub.2017.08.056.

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Mandiola, Maria A., Gisela Giardino, Julián Bastida, Sergio Morón, Diego H. Rodríguez, and Ricardo Bastida. "Half a century of sightings data of southern right whales in Mar del Plata (Buenos Aires, Argentina)." Journal of the Marine Biological Association of the United Kingdom 100, no. 1 (2019): 165–71. http://dx.doi.org/10.1017/s0025315419001036.

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AbstractIn South-western Atlantic waters, individuals of the southern right whale (SRW) Eubalaena australis spend part of the year (the austral winter and spring) in northern inshore waters where they breed and then migrate to southern feeding grounds during the summer. Mar del Plata (MDP) is located between two main reproductive areas (Península Valdés-Argentina and Santa Catarina-Brazil). The purpose of the present study is to report the presence of SRWs on their journey off the coast of MDP based on sighting records during the past half century. We carried out whale observations through systematic weekly coastal marine mammal surveys in different points of the MDP area from 1966 to 2016. The first SRW sighting was recorded in 1970; since then, sighting frequency has gradually increased, reaching a peak of 28 sightings (N = 63 whales) in 2016. These are unique long-term sighting records of SRWs in Argentina and the first on their journey off the shores of Buenos Aires province. We expect that these results will help local authorities to regulate tourism and other activities in the area and thereby contribute to the conservation of the species.
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Kylin, Henrik. "Birds and mammals off the northern coast of Argentina: first report of an association between birds and a feeding Pygmy Right Whale Caprea marginata." Ornis Svecica 23, no. 3–4 (2013): 117–22. http://dx.doi.org/10.34080/os.v23.22572.

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When the icebreaker Oden passed between 39°36'S, 57°46'W and 39°59'S, 58°11'W on 20 November 2007, an extraordinary observation was made. A feeding Pygmy Right Whale Caprea marginata, a species rarely seen, was attended by eight Grey Phalaropes Phalaropus fulicarius, two Slender-billed Prions Pachyptila belcheri, and four Wilson’s Storm Petrels Oceanites oceanicus. The birds returned to feed around the head of the whale every time it surfaced, presumably copepod plankton straining out between the baleen. The site is off Rio de la Plata estuary where nutrient rich freshwater meets cold water of the Malvinas (Falkland) Current, creating a hotspot with high levels of plankton food. The conditions were extraordinarily favourable for observation with a calm sea, no wind and only a very weak swell. Six multispecies feeding groups were seen with a total of 42 species of birds, eleven species of whales, dolphins and porpoises, and three species of seals. Dusky Dolphins Lagenorhynchus obscurus and Great Shearwaters Puffinus gravis were predominant in the groups.
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Gerstein, Edmund R., Vasilis Trygonis, and James B. Moir. "Vocal behavior and ontogeny of Northern right whales in the southeast critical habitat." Journal of the Acoustical Society of America 141, no. 5 (2017): 4002. http://dx.doi.org/10.1121/1.4989179.

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Gerstein, Edmund R., Vasilis Tyrgonis, and James Moir. "Baby's first words: Vocal behavior and ontogeny of Northern right whales in the southeast critical habitat." Journal of the Acoustical Society of America 140, no. 4 (2016): 3415. http://dx.doi.org/10.1121/1.4970976.

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Dissertations / Theses on the topic "Northern right whales Northern right whales Whales"

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Frasier, Timothy Ray White Bradley Neil. "Integrating genetic and photo-identification data to assess reproductive success in the North Atlantic right whale (Eubalaena glacialis) /." *McMaster only, 2005.

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Murray, Brent William. "Major histocompatibility complex class II sequence variation in cetaceans : DQ[beta] and DR[beta] variation in beluga (Delphinapterus leucas) and DQ[beta] variation in North Atlantic right whales (Eubalaena glacialis) /." *McMaster only, 1997.

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Waldick, Ruth. "Assessing the status of the endangered North Atlantic right whale using genetic and demographic data." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp03/NQ66244.pdf.

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Campbell-Malone, Regina P. "Biomechanics of North Atlantic right whale bone : mandibular fracture as a fatal endpoint for blunt vessel-whale collision modeling." Thesis, Massachusetts Institute of Technology, 2007. http://hdl.handle.net/1721.1/43819.

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Thesis (Ph. D.)--Joint Program in Oceanography/Applied Ocean Science and Engineering (Massachusetts Institute of Technology, Dept. of Biology; and the Woods Hole Oceanographic Institution), 2007.<br>Includes bibliographical references.<br>The North Atlantic right whale, Eubalaena glacialis, one of the most critically endangered whales in the world, is subject to high anthropogenic mortality. Vessel-whale collisions and entanglement in fishing gear were indicated in 27 (67.5%) of the 40 right whales necropsied between 1970 and December 2006. Of those, at least 9 deaths (22.5%) resulted from blunt contact with a vessel. To reduce the likelihood of fatal collisions, speed restrictions are being considered for vessels traversing critical habitat, although the effects of speed on collision outcomes have not been specifically evaluated from a biomechanics perspective. The ultimate goal of a larger collaborative project is to evaluate the efficacy of speed restrictions for reducing blunt collision mortality using a multi-scale finite element model. Complete, transverse fracture of the right whale mandible, an injury seen only in right whales killed by vessels, is used as a proxy for mortality in the model. Vital for that model are the material properties and biomechanical behavior of the right whale mandible. Here, the internal structure and physical properties of right whale jawbone tissue are reported. The average apparent densities, 0.4258 g/cc ±0.0970 and 1.2370 g/cc ±0.0535 for trabecular and cortical bone respectively, indicate that the bone is of relatively low density. Average ash content for trabecular bone (64.38% ±1.1330) is comparable with values from other species, indicating that low density results from a reduction of bone mass, not mineralization. Mechanical properties of right whale bone (Young's modulus of elasticity and Poisson's ratio) were determined via uniaxial compression testing.<br>(cont.) These data are incorporated into the finite element model simulating different loading conditions (e.g. vessel speeds) that likely lead to mandibular failure and thereby mortality from blunt vessel collisions. Model results (e.g. risk of fracture) are used to determine the effect of speed restrictions on collision outcomes.<br>by Regina Campbell-Malone.<br>Ph.D.
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Ferrero, Richard C. "Life history and multivariate analyses of habitat selection patterns among small cetaceans in the central North Pacific Ocean /." Thesis, Connect to this title online; UW restricted, 1998. http://hdl.handle.net/1773/5475.

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Nieukirk, Sharon L. "Satellite monitored dive characteristics of the northern right whale, Eubalaena glacialis." Thesis, 1992. http://hdl.handle.net/1957/36164.

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The western North Atlantic population of the northern right whale (Eubalaena glacialis) was severely depleted by whaling over the last century. Despite over fifty years of protection, fewer than four hundred individuals are believed to exist in the North Atlantic. Relatively little is known about the diving behavior, respiratory physiology, or diel activity of these whales, although such information could be useful in predicting population abundance and distribution in relation to food or environmental variables. Dive behavior data can be collected visually, but collection is limited to daylight hours, calm weather, and fortuitous encounters with study animals. Satellite-monitored radio tags offer the opportunity to collect data on individual whales' diving behavior continuously, over long distances and periods of time, and at relatively low cost. Thirteen North Atlantic right whales were tagged and monitored in the Gulf of Maine between 1989 and 1991. One male was tagged in 1989; two adult males, six adult females (two with calves) and one juvenile were tagged in 1990; one adult female (with a calf) and two juveniles were tagged in 1991. The duration of monitoring for the whales varied from <1 day to 43 days. Characteristics of the radio tags were different over each year in order to evaluate different attachment mechanisms and methods of collecting and summarizing data for dive duration, dive frequency, and time submerged. These data were then used to describe the dive behavior and to predict aspects of the respiratory physiology for these whales. The number of dives, their duration, and the time submerged varied considerably among individual whales and between years. Over all, the whales spent 79% of their time underwater. However, most dives were short (i.e., 95% were <14 min; the mean dive duration was 92.3 sec), although dives of 30-40 min duration were observed for several individuals. In general, the number of dives a right whale made was inversely related to the average duration of its dives within a time interval. Furthermore, over a given time interval, the number of times a whale dove was a better predictor of the percent time it was submerged than was the average duration of its dives. There was no evidence of diel variation in dive behavior (i.e., number of dives, average dive duration, or percent time submerged) among these whales. Age, sex, and reproductive status may have affected dive behavior, although these trends were not statistically significant due to the small number of study animals and individual behavioral variability. Males tended to dive more often and averaged shorter dives than females. Females with calves dove more often and averaged shorter dives than females without calves. Juvenile females dove less often but averaged longer dives than adult males or females with calves. It was predicted that the aerobic dive limit of an "average" right whale was approximately 14 min. Ninety-five percent of the dives recorded for the 11 monitored right whales were < 14 min. Furthermore, there was no evidence of recuperative periods (i.e., prolonged periods at the surface) after long dives. These observations were consistent with the idea that the North Atlantic right whales dove within their aerobic scope. They further suggest that physiological parameters alone probably have little influence on dive characteristics, except to set an upper limit on the duration of a dive. Satellite telemetry provides an opportunity to monitor the movements and behavior of free-ranging animals, and overcome many of the short-comings associated with traditional, human-based visual techniques for tracking and studying such animals. Although the tags used in this study were prototypes and varied in their design from year to year, several right whales were monitored simultaneously and were tracked over thousands of kilometers. Advances in tag miniaturization, attachment, and software will likely extend the time tags stay attached and the detail of the behavioral and environmental variables that can be monitored. As testimony to the power of this technology, this application of satellite telemetry to monitor great whales yielded one of the most extensive, long-term, continuously-monitored data sets yet recorded on the diving behavior of a baleen whale.<br>Graduation date: 1993
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Sheridan, Mackenzie L. "Determining pregnancy status of extant and ancient whales by quantifying progesterone in blubber biopsies and bone /." 2004.

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Good, Caroline Paddock. "Spatial Ecology of the North Atlantic Right Whale (Eubalaena Glacialis)." Diss., 2008. http://hdl.handle.net/10161/588.

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Books on the topic "Northern right whales Northern right whales Whales"

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Gromling, Frank. Frank's whales. Ocean Pub., 2003.

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Marie, Bettridge Shannon Olivia, and United States. National Marine Fisheries Service, eds. Vessel operations in right whale protection areas in 2009. U.S. Dept. of Commerce, National Oceanic and Atmospheric Administration, National Marine Fisheries Service, 2010.

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Parks, Susan Elizabeth. Acoustic communication in the North Atlantic right whale (Eubalaena glacialis). Massachusetts Institute of Technology, 2003.

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Brown, Moira W. Surveillance, monitoring and management of North Atlantic right whales, Eubalaena glacialis, in Cape Cod Bay, Massachusetts: January to mid-May, 1999 : final report. The Division, 1999.

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Waltzes with giants: The twilight journey of the North Atlantic right whale. Skyhorse Pub., 2012.

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Right Whale Recovery Team (U.S.). Recovery plan for the northern right whale (Eubalaena glacialis). The Office, 1991.

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United, States Congress Senate Committee on Commerce Science and Transportation Subcommittee on Oceans and Fisheries. Whale protection and the impact on North Atlantic fisheries: Hearing before the Subcommittee on Oceans and Fisheries of the Committee on Commerce, Science, and Transportation, United States Senate, One Hundred Fifth Congress, first session, April 26, 1997. U.S. G.P.O., 1997.

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Fujiwara, Masami. Mark-recapture statistics and demographic analysis. Massachusetts Institute of Technology, 2002.

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Fujiwara, Masami. Mark-recapture statistics and demographic analysis. Massachusetts Institute of Technology, 2002.

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United States. National Marine Fisheries Service, ed. The northern right whale.: Can this species survive? National Marine Fisheries Service, 2004.

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Book chapters on the topic "Northern right whales Northern right whales Whales"

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Colby, Jason M. "The Old Northwest." In Orca. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780190673093.003.0006.

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On the morning of Monday, October 12, 1931, early risers in northern Portland noticed a strange creature with smooth black skin in Columbia Slough, right next to the Jantzen Beach Amusement Park. Locals debated its identity. Some argued it was a sturgeon, others a sei whale all the way from Japan. Finally, an old salt tagged it as a small “blackfish.” News of the novelty spread like wildfire, drawing thousands of spectators and causing gridlock on the interstate bridge between Portland and Vancouver, Washington. A local newspaper warned that killer whales were one of the ocean’s “most vicious” creatures, but this one promptly stole Portland’s heart. “From the looks of things,” declared Deputy Sheriff Martin T. Pratt, “nearly everyone in the city is determined to see the visitor,” and when some locals began shooting at the animal, Pratt and his men arrested them. The number of sightseers grew each day, and that weekend, tens of thousands crowded into Jantzen Beach to catch a glimpse of the whale, while enterprising fishermen charged twenty-five cents for whale-watching rides. By that time, someone had dubbed the orca Ethelbert, and the name stuck. Why the little whale had arrived there, a hundred miles up the Columbia, remains a mystery. It had probably become separated from its mother and lost its bearings, wandering up the great river that divides western Oregon from Washington State. But Columbia Slough was no place for an orca. In addition to lacking salt water, it was the main outlet for Portland’s sewage. In summer, the waterway grew so foul that workers refused to handle timber passing through it. As the days passed, observers grew worried. The whale seemed sluggish, and its skin began to show unsightly blotches. The owner of Jantzen Beach proposed capturing the animal with a net and placing it in a saltwater tank. It would have been an extraordinary attraction for his amusement park—already known as the Coney Island of the West. But members of the Oregon Humane Society denounced the scheme as rank cruelty. Instead, they proposed blowing the young orca up with dynamite.
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