2018).Visual sightings of Sowerby’s Beaked Whales in Canadian waters are concentrated just north of the international boundary between Canada and the United States, along the shelf break, the Gully, as well as Shortland and Haldimand Canyons (Scotian Shelf break, 44.1°N, 58.4°W; 44.2°N, 58.0°W respectively; Figure 2). The vast majority of these cruises were not targeting beaked whales, and thus these represent incidental sightings. Final report. 19 pp.Bittau, L., M. Leone, A. Gannier, A. Gannier, and R. Manconi.

However, only a single detection was made off Cape Hatteras over the 734 days hydrophones were deployed in this location. These whales are also vulnerable to vessel strikes and fishing gear entanglement.Criterion A (Decline in total number of mature individuals): Not applicable; no clear evidence of decline.Criterion B (Small distribution range and decline or fluctuation): Not applicable; extent of occurrence and index of area of occupancy exceed thresholds.Criterion C (Small and declining number of mature individuals): Not applicable; no clear evidence of decline.Criterion D (Very small or restricted population): Not applicable; population may be very small.Criterion E (Quantitative analysis): Analysis not conducted.Since the previous assessment of the Sowerby’s Beaked Whale (,The Committee on the Status of Endangered Wildlife in Canada (COSEWIC) was created in 1977 as a result of a recommendation at the Federal-Provincial Wildlife Conference held in 1976.
Tyack, D. Wartzok, and V.M.

Mullin, D.L. A possible ship collision with a Sowerby’s beaked whale (.Lien, J., and F. Barry. 2010).

This would likely lead to at least a 2 to 3 year inter-birth interval (New et al. Iteroparous animals must, by definition, survive over multiple seasons (or periodic condition changes).eats mollusks, members of Phylum Mollusca.having the capacity to move from one place to another.the area in which the animal is naturally found, the region in which it is endemic.generally wanders from place to place, usually within a well-defined range.An aquatic biome consisting of the open ocean, far from land, does not include sea bottom (benthic zone).mainly lives in oceans, seas, or other bodies of salt water.breeding is confined to a particular season,reproduction that includes combining the genetic contribution of two individuals, a male and a female.associates with others of its species; forms social groups.that region of the Earth between 23.5 degrees North and 60 degrees North (between the Tropic of Cancer and the Arctic Circle) and between 23.5 degrees South and 60 degrees South (between the Tropic of Capricorn and the Antarctic Circle).reproduction in which fertilization and development take place within the female body and the developing embryo derives nourishment from the female.young are relatively well-developed when born,2006. 2012; Fahlman et al. Snow, 2007. (2017) have recently documented that beaked whales including Sowerby’s Beaked Whale frequently stop producing echolocation clicks in the presence of commercial echosounders, which can frequently be employed along the shelf break.Stranding networks in Atlantic Canada have become more active since the late 1970s and the number of strandings reported has increased (Table 1). 2013. Uncertain status of the northern bottlenose whale (.Wieczorek, A.M., L. Morrison, P.L.

The North Atlantic Right Whale Consortium maintains a sightings database which contains not only North Atlantic Right Whale sightings, but also those of many other species. However, aerial surveys, which are efficient for covering large areas, have a lower probability of detecting deep-diving whales such as Sowerby’s Beaked Whales because of less time spent at the surface. Further photo-identification work could yield important information about Sowerby’s Beaked Whale population sizes, movements and habitat use (Clarke 2017).Order-of-magnitude estimates for the number of Sowerby’s Beaked Whales using Canadian waters can be obtained by comparison with the Northern Bottlenose Whale, which uses similar habitat (Macleod 2000; Whitehead and Hooker 2012). Perrin. Beaked whales echolocate on prey. Management Plan for the Sowerby’s Beaked Whale (.Frantzis, A. 2017. Therefore there are insufficient data to estimate total population size or to detect trends.Sowerby’s Beaked Whales, like other beaked whales, are likely threatened by intense underwater sounds, especially those associated with mid-frequency sonar and seismic surveys. More work is required to determine the sensitivity of each species as well as individual variability in response. Anthropogenic noise in the ocean has been increasing over the past several decades.

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