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Lake Whitefish: Characteristics, Reproduction, Impact, and Management - Prof. Geoffrey B. , Lab Reports of Biology

Detailed information about lake whitefish (coregonus clupeaformis), including its taxonomy, characteristics, reproduction, economic and ecological impact, and management. Details about its coloration, size, identifying features, spawning habits, diet, range, and economic and ecological significance. It also discusses the challenges facing the population of lake whitefish, such as overfishing, damaged environment, and predation. References to various literature sources are provided.

Typology: Lab Reports

Pre 2010

Uploaded on 08/07/2009

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Lake Whitefish
Coregonus clupeaformis
Tyler Buchinger
Taxonomy
Class: Actinopterygii
Order: Salmoniformes
Family: Salmonidae
Subfamily: Coregoninae
Genus: Coregonus
Specific epithet: clupeaformis
Characteristics
!Coloration
"Mostly silver
"Greenish brown back
!Size
"40-60 cm (16-24 in)
"0.6-1.8 kg (1.5-4 lbs)
!Adipose Fin
!Forked Tail
Identifying Features
!Subterminal mouth
"Few, small teeth
!Double Nostril Flaps
!74-93 Cycloid scales
!19-33 short gill rakers
!140-222 pyloric caeca
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Lake Whitefish

Coregonus clupeaformis

Tyler Buchinger

Taxonomy

Class: Actinopterygii

Order: Salmoniformes

Family: Salmonidae

Subfamily: Coregoninae

Genus: Coregonus

Specific epithet: clupeaformis

Characteristics

! Coloration

"Mostly silver

"Greenish brown back

! Size

"40-60 cm (16-24 in)

"0.6-1.8 kg (1.5-4 lbs)

! Adipose Fin

! Forked Tail

Identifying Features

! Subterminal mouth

" Few, small teeth

! Double Nostril Flaps

! 74-93 Cycloid scales

! 19-33 short gill rakers

! 140-222 pyloric caeca

Reproduction ! Spawn at night, October-December ! Pelagic spawning "Large groups "Shallow water !<25 feet !Rock or sand "Polyandrous mating "No parental care "Mature in 4-5 years Adult Life ! Large schools ! Deep, cold lakes ! Feed on " Insects " Eggs " Small fish " Diporeia

! Macro invertebrate

! Zebra mussel

Range ! Canada ! Great Lakes region Economic Impact ! Large commercial fishery " Large schools " Fillets and roe " Average 9 million lbs yearly ! Sport fish