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COSEWIC Status Reports

  • COSEWIC assessment and status report on the Sockeye Salmon Oncorhynchus nerka, 24 Designatable Units in the Fraser River Drainage Basin, in Canada (2018)
    Sockeye salmon is one of seven species of the genus Oncorhynchus native to North America. Adults have a slender, streamlined, silvery body with faint blue-green specking on the back and weigh an average of 3 kg (but in some cases over 6 kg). They undergo a distinctive transformation of external colour and body shape during their migration from the ocean to the freshwater ecosystem where they were born and grew as juveniles (usually a lake). The h ...
  • COSEWIC Assessment and Status Report on the Bering Cisco (Coregonus laurettae) in Canada (2018)
    Bering Cisco (Coregonus laurettae) is part of the family Salmonidae and subfamily Coregoninae. Bering Cisco shares morphological similarities with the other Cisco species, such as the Arctic Cisco (Coregonus autumnalis) and Least Cisco (Coregonus sardinella). However, Bering Cisco has a more elongate, less laterally compressed body, and pale pelvic and pectoral fins in comparison to other Cisco species. The Canadian population of Bering Cisco rep ...
  • COSEWIC Assessment and Status Report on the Caribou (Rangifer tarandus) Dolphin and Union population in Canada (2018)
    Dolphin and Union Caribou are easily recognizable from Barren-ground and Peary Caribou. Intermediate in body size, they are morphologically and behaviourally distinct from both, and genetic analyses have consistently confirmed their uniqueness. A key distinguishing behavioural trait relative to other Caribou populations is the seasonal migrations that occur twice a year when members of this population cross the sea ice between Victoria Island and ...
  • COSEWIC Assessment and Status Report on the Northern Saw-whet Owl (brooksi) subspecies (Aegolius acadicus brooksi) in Canada (2018)
    The brooksi subspecies of Northern Saw-whet Owl is a small owl, about 20 cm in length. It has a relatively large head, with a prominent round facial disk and no ear tufts. Plumage is darker than in the continental acadicus subspecies, with an overall buffy appearance and dark stripes on the underparts. This endemic, non-migratory subspecies is found only on Haida Gwaii (formerly known as the Queen Charlotte Islands) in British Columbia. It is dis ...
  • COSEWIC Assessment and Status Report on the Porsild’s Bryum (Haplodontium macrocarpum) in Canada (2018)
    Porsild’s Bryum (Haplodontium macrocarpum) is a Holarctic disjunct species occurring at widely scattered sites across the northern hemisphere. The main portion of the species’ known global range is situated within North America, with Canada supporting the largest population worldwide. Porsild’s Bryum belongs to the large and globally distributed moss family Bryaceae, and was first described from a collection made by Thomas Drummond in 1828, in wh ...
  • COSEWIC Assessment and Status Report on the Prairie Skink (Plestiodon septentrionalis) in Canada (2018)
    Prairie Skink is a small, slender lizard with body (snout-vent) length up to 85 mm; the tail can be approximately as long as the body. Prairie Skink is brown with four light stripes along the length of the body and extending onto the tail. Males have reddish orange colouration on the head and throat during the breeding season, and juveniles have bright blue tails. There are three subspecies, but only Northern Prairie Skink occurs in Canada. North ...
  • COSEWIC Assessment and Status Report on the Quebec Rockcress (Boechera quebecensis) in Canada (2018)
    Quebec Rockcress is an herbaceous biennial or short-lived perennial that grows 10–45 cm tall. The inflorescence comprises 11 to 41 flowers with lavender to greenish sepals and white petals arranged on a single side of the stem.
  • COSEWIC Assessment and Status Report on the Redside Dace (Clinostomus elongatus) in Canada (2018)
    Redside Dace is a colourful minnow that features a yellow lateral stripe extending the length of the body and a bright red stripe below the yellow. The back is a variable shade of green and the ventral surface is silvery white. The body is slender and laterally compressed. Maximum size is 120 mm. Redside Dace has a long snout with a projecting lower jaw. Pectoral fins are longer in males than females. The species is an indicator of habitat qualit ...
  • COSEWIC Assessment and Status Report on the Spoon-leaved Moss (Bryoandersonia illecebra) in Canada (2018)
    A large and distinctive species, Spoon-leaved Moss (Bryoandersonia illecebra) is readily distinguished in the field by cylindrical, worm-like shoots. Bryoandersonia is a monotypic genus that is endemic to eastern North America. The position of Canadian subpopulations, at the edge of the species’ geographic range, may be associated with unique genetic characters.
  • COSEWIC Assessment and Status Report on the Vancouver Lamprey (Entosphenus macrostomus) in Canada (2018)
    Vancouver Lamprey is a parasitic eel-shaped fish, with a round, sucker-like mouth which it uses to attach to the side of prey fishes. Adults range in size from 18 to 27 cm. The larger mouth and eye, and its ability to remain in fresh water throughout its parasitic feeding phase, distinguish Vancouver Lamprey from the closely related Pacific Lamprey.
  • COSEWIC Assessment and Status Report on the Verna's Flower Moth (Schinia verna) in Canada (2018)
    Verna’s Flower Moth is a small, day-flying sun moth. This species is part of the family of owlet moths, which are one of the most diverse groups of Lepidoptera and have a worldwide distribution.
  • COSEWIC Assessment and Status Report on the Western Silvery Minnow (Hybognathus argyritis) in Canada (2018)
    The Western Silvery Minnow (Hybognathus argyritis) is a small fish belonging to the Cyprinidae family. It has an elongated body, triangular head, and small subterminal mouth. Its sides are bright silver, fading to brownish yellow dorsally and white ventrally. This species averages 80-85 mm in fork length (FL) and grows to a maximum of ~150 mm FL. A single population of Western Silvery Minnow exists in Canada. The species is native to Alberta and ...
  • COSEWIC Assessment and Status Report on the Williamson's Sapsucker (Sphyrapicus thyroideus) in Canada (2018)
    Williamson’s Sapsucker is a medium-sized woodpecker with no recognized subspecies. Unique among woodpeckers, the male Williamson’s Sapsucker (mostly black and white) and the female (mostly black and brown) exhibit strikingly different plumage. It is considered a sensitive indicator species because of its specific requirements for habitat with large trees that provide nest cavities and colonial ants on which to forage. It is a primary cavity excav ...
  • COSEWIC Assessment and Status Report on the Yukon Wild Buckwheat (Eriogonum flavum var. aquilinum) in Canada (2018)
    Yukon Wild Buckwheat is a perennial herb with basal leaves that form a compact mat up to about 35 cm wide. The stems and leaves are covered with a dense layer of short, whitish hairs and arise from a stout, woody caudex (underground stem). The flowers are bright yellow and arranged in an umbel at the end of the stem. Yukon Wild Buckwheat is of Beringian origin and endemic to unglaciated areas of Yukon and Alaska. Species of buckwheat have been us ...
  • Addendum to COSEWIC November 2016 Status Report for the Monarch Danaus plexippus in Canada (2018)
    The Monarch is a large, showy, orange and black butterfly. The wings, which span 93-105 mm, are mostly orange with a broad black border and two rows of circular white spots. The chrysalis is of a spectacular green and gold. The larva is distinctively white, yellow, and black-banded, with a pair of black filaments at its head and tail.

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