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- COSEWIC Status Reports (725 record(s) found.)
COSEWIC Status Reports
COSEWIC assessment and status report on the Marbled Murrelet Brachyramphus marmoratus in Canada (2013)
The Marbled Murrelet is a small seabird in the Family Alcidae. Marbled Murrelets forage by diving for small schooling fish in nearshore waters.
COSEWIC assessment and status report on the Mountain Beaver Aplodontia rufa in Canada (2013)
The Mountain Beaver, Aplodontia rufa, is a muskrat-sized fossorial rodent endemic to western North America. It is the only living species of the family Aplodontiidae and is considered a ‘living fossil’ because of its primitive physiology and skull features. Recent genetic analysis suggests one subspecies occurs in Canada, rather than two as previously believed.
COSEWIC assessment and status report on the Northern Dusky Salamander Desmognathus fuscus in Canada (2013)
The Northern Dusky Salamander (Desmognathus fuscus) is a member of the family Plethodontidae (lungless salamanders). Adults are usually brownish with a light dorsal stripe that continues onto the first portion of the tail. The body is sparsely covered with dark spots that are concentrated on the sides and becomes white or grey on the underside. Old individuals tend to be uniformly dark brown or black. Younger life stages have five to eight pairs ...
COSEWIC assessment and status report on the Northern Madtom Noturus stigmosus in Canada (2013)
The Northern Madtom is a small catfish that has a mottled colour pattern with irregular dark saddles on the back, with two large light spots in front of the dorsal fin. It has four pairs of barbels on the head, and venomous spines in the dorsal and pectoral fins. The Northern Madtom appears to be declining throughout much of its global range, and is a species that has always been rare in Canada.
COSEWIC assessment and status report on the Plains Minnow Hybognathus placitus in Canada (2013)
The Plains Minnow (Hybognathus placitus) is the most geographically restricted of the four species within its genus in Canada. It is a small, silvery minnow with a slightly compressed body and a blunt, triangular head. Proper identification of the silvery minnows is difficult in the field and definitive identification often requires laboratory dissection of the posterior process of the basioccipital bone, a key character used for separating the s ...
COSEWIC assessment and status report on the Pugnose Minnow Opsopoeodus emiliae in Canada (2013)
The Pugnose Minnow is a small (maximum total length is 64 millimetres) member of the family Cyprinidae that has a small upturned mouth, a black lateral band extending from the tail to the snout, and a criss-cross pattern of scaling particularly evident on the upper body. The dorsal fin of adult males is dusky or black with a white bar in the middle, a pattern of pigmentation that intensifies during the spawning season. Unlike any other Canadian m ...
COSEWIC assessment and status report on the Silver Chub Macrhybopsis storeriana in Canada (2013)
The Silver Chub (Macrhybopsis storeriana) is characterized by the presence of a slender barbel at the corners of the mouth, a rounded snout that greatly overhangs the mouth, a large eye on the upper half of the head, fewer than 50 lateral line scales, silvery sides lacking markings and an anteriorly located dorsal fin. It reaches a maximum length of 231 mm total length.
COSEWIC assessment and status report on the Smooth Skate Malacoraja senta in Canada (2013)
The Smooth Skate, Malacoraja senta, is endemic to the northwest Atlantic (Canada and USA). It is one of the smallest species of skate in region, with a longer tail relative to its body length than other species.
COSEWIC assessment and status report on the Thorny Skate Amblyraja radiata in Canada (2013)
Amblyraja radiata, commonly known as Thorny Skate in English and Raie épineuse in French, is a relatively large skate, reaching up to 110 cm long on the Grand Banks. It varies among regions in size, body proportions, growth, and age at maturity. It is distinguished from other skates in the northwest Atlantic by a row of 11-19 large thorns running down the middle of its back and along the tail. It is usually brown although younger individuals may ...
COSEWIC assessment and status report on the Tiny Cryptantha Cryptantha minima in Canada (2013)
Tiny Cryptantha is a small, bristly-haired annual plant that has tiny white flowers with yellow centres. The Canadian populations are the most northern occurrences of this species, and because these populations are disjunct from more southern populations, they could carry unique genetic variability that may contribute to adaptations and long-term persistence of the species.
COSEWIC assessment and status report on the Weidemeyer's Admiral Limenitis weidemeyerii in Canada (2013)
Weidemeyer's Admiral is a relatively large, boldly patterned black and white butterfly. It has more white on its hind wing underside and reduced orange markings than the closely related Lorquin’s and White Admirals. As with related species, the larvae resemble bird droppings. The species represents a southern biogeographical element at the northern limit of its range along the Milk River, and is an important model for the study of speciation and ...
COSEWIC Status Appraisal Summary on the Blue Racer Coluber constrictor foxii in Canada (2013)
Designated Endangered in April 1991. Status re-examined and confirmed in May 2002 and May 2012.
COSEWIC Status Appraisal Summary on the Blue Whale Balaenoptera musculus in Canada (2013)
The species was considered a single unit and designated Special Concern in April 1983. Split into two populations in May 2002. The Atlantic population was designated Endangered in May 2002. Status re-examined and confirmed in May 2012.
COSEWIC Status Appraisal Summary on the Blue Whale Balaenoptera musculus, Pacific Population, in Canada (2013)
The species was considered a single unit and designated Special Concern in April 1983. Split into two populations in May 2002. The Pacific population was designated Endangered in May 2002. Status re-examined and confirmed in May 2012.
COSEWIC status appraisal summary on the Incurved Grizzled Moss Ptychomitrium incurvum in Canada (2013)
Designated Extirpated in November 2002. Status re-examined and confirmed in May 2012.
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