Coregonus hoyi: Difference between revisions

From Wikipedia, the free encyclopedia
Content deleted Content added
m Added common name info, intro
Sort within Category:Coregonus
 
(29 intermediate revisions by 17 users not shown)
Line 1: Line 1:
{{Short description|Species of fish}}
{{italictitle}}
{{italic title}}
{{Taxobox
{{Speciesbox
| name = Bloater
| name = Bloater
| status = VU | status_system = IUCN3.1 | status_ref=<ref name="iucn">{{harvnb|Gimenez Dixon|1996}}</ref>
| image = Coregonushoyi.jpg
| image = Coregonushoyi.jpg
| image_width =
| image_caption =
| image_caption =
| regnum = [[Animal]]ia
| status = VU
| status_system = IUCN2.3
| phylum = [[Chordate|Chordata]]
| status_ref = <ref name="iucn status 19 November 2021">{{cite iucn |author=Gimenez Dixon, M. |date=1996 |title=''Coregonus hoyi'' |volume=1996 |page=e.T5366A11123739 |doi=10.2305/IUCN.UK.1996.RLTS.T5366A11123739.en |access-date=19 November 2021}}</ref>
| classis = [[Actinopterygii]]
| taxon = Coregonus hoyi
| ordo = [[Salmoniformes]]
| authority = ([[James Wood Milner|Milner]], 1874)
| familia = [[Salmonidae]]
| synonyms = ''Argyrosomus hoyi'' <small>Milner, 1874</small>
| subfamilia = [[Freshwater whitefish|Coregoninae]]
}}
| genus = ''[[Coregonus]]''

| species = '''''C. hoyi'''''
'''''Coregonus hoyi''''', also known as the '''bloater''', is a [[species]] or form of [[freshwater whitefish]] in the [[family (biology)|family]] [[Salmonidae]]. It is a silvery-coloured [[herring]]-like fish, {{convert|25.5|cm|in}} long. It is found in most of the [[Great Lakes]] and in [[Lake Nipigon]], and inhabits underwater slopes. This fish is not to be confused with the extinct [[deepwater cisco]] (''Coregonus johannae''), a large fish that shared a common name with the bloater.
| binomial = ''Coregonus hoyi''
| binomial_authority = ([[James Wood Milner|Milner]], 1874)
| synonyms = ''Argyrosomus hoyi'' <small>Milner, 1874</small>}}
The '''bloater''' ('''''Coregonus hoyi''''') is a [[species]] or form of [[freshwater whitefish]] in the [[family (biology)|family]] [[Salmonidae]]. It is a silvery-coloured [[herring]]-like fish, {{convert|25.5|cm|in}} long. It is found in most of the [[Great Lakes]] and in [[Lake Nipigon]], where it inhabits underwater slopes. This fish is not to be confused with the extinct [[deepwater cisco]] (''Coregonus johannae''), a large fish that shared a common name with the bloater. Thus, it is beneficial to call ''Coregonus hoyi'' by the common name "bloater", as opposed to "deepwater cisco".


== Description ==
== Description ==
Line 25: Line 21:
== Distribution ==
== Distribution ==


The bloater is native to all of the [[Great Lakes]] (except [[Lake Erie]]) and in [[Lake Nipigon]]. Across its range it is in decline, and it is listed as [[vulnerable species|Vulnerable]] to global [[extinction]] by the [[IUCN Red List]].<ref name="iucn"/> It is extirpated in Lakes [[Lake Ontario|Ontario]] and Nipigon, is uncommon in [[Lake Michigan]] and is in decline Lakes Superior and Huron.<ref name="Page">{{harvnb|Page|Burr|1991|p=44}}</ref><ref name="Hubbs"/> This decline is caused mostly by predation by the [[alewife]],<ref>{{harvnb|Crowder|Binkowski|1983}}</ref> and also by [[sea lamprey]] predation<ref name="seagrant"/> and pollution.<ref>{{harvnb|Hesselberg|Hickey|Nortrup|Willford|1990}}</ref>
The bloater is native to all of the [[Great Lakes]] (except [[Lake Erie]]) and in [[Lake Nipigon]]. Across its range it is in decline, and it is listed as [[vulnerable species|Vulnerable]] to global [[extinction]] by the [[IUCN Red List]].<ref name="iucn status 19 November 2021" /> It was extirpated in Lake [[Lake Ontario|Ontario]] and is extirpated in Lake Nipigon, is uncommon in [[Lake Michigan]] and is in decline Lakes Superior and Huron.<ref name="Page">{{harvnb|Page|Burr|1991|p=44}}</ref><ref name="Hubbs"/> This decline is caused mostly by predation by the [[alewife (fish)|alewife]],<ref>{{harvnb|Crowder|Binkowski|1983}}</ref> and also by [[sea lamprey]] predation<ref name="seagrant"/> and pollution.<ref>{{harvnb|Hesselberg|Hickey|Nortrup|Willford|1990}}</ref>


However, efforts to re-introduce the species in to Lake Ontario have been met with great success.<ref>New York State. Department of Environmental Conservation. Deepwater Ciscos to Be Re-Introduced Into Lake Ontario. New York State Department of Environmental Conservation. New York State, 8 Nov. 2012. Web. 5 Jan. 2015. [http://www.dec.ny.gov/press/86806.html New York DEC - Deepwater Cisco, 2012 Press Release]</ref> Multiple North American fishery agencies have aided in the bloater's return to the lake, due to the positive impact it could have on its food web. Recent studies have shown that this fish has made a surprising comeback, and it is now re-established in Lake Ontario.<ref>United States Fish and Wildlife Service. Lake Michigan Wild Egg Collections Lead to the Return of Deepwater Cisco in Lake Ontario! Field Notes. United States Fish and Wildlife Service, 1 Mar. 2014. Web. 5 Jan. 2015. [http://www.fws.gov/fieldnotes/regmap.cfm?arskey=34763 USFWS - Return of Deepwater Cisco! (2014)].</ref> State, provincial and federal agencies aim to stock 500,000 ''Coregonus hoyi'' into Lake Ontario by the year 2015.<ref>United States Fish and Wildlife Service. Region 3 USFWS Offices Assist Lake Ontario with Bloater Chub Reintroduction Efforts. Field Notes. United States Fish and Wildlife Service, 01 Mar. 2012. Web. 06 Jan. 2015. [http://www.fws.gov/FieldNotes/regmap.cfm?arskey=31801 USFWS - Bloater Reintroduction Efforts (2012)].</ref>
However, efforts to re-introduce the species in to Lake Ontario have been met with great success.<ref>New York State. Department of Environmental Conservation. Deepwater Ciscos to Be Re-Introduced Into Lake Ontario. New York State Department of Environmental Conservation. New York State, 8 November 2012. Web. 5 January 2015. [http://www.dec.ny.gov/press/86806.html New York DEC - Deepwater Cisco, 2012 Press Release]</ref> Multiple North American fishery agencies have aided in the bloater's return to the lake, due to the positive impact it could have on its food web. Recent studies have shown that this fish has made a surprising comeback, and it is now re-established in Lake Ontario.<ref>United States Fish and Wildlife Service. Lake Michigan Wild Egg Collections Lead to the Return of Deepwater Cisco in Lake Ontario! Field Notes. United States Fish and Wildlife Service, 1 March 2014. Web. 5 January 2015. [http://www.fws.gov/fieldnotes/regmap.cfm?arskey=34763 USFWS - Return of Deepwater Cisco! (2014)].</ref> State, provincial and federal agencies aim to stock 500,000 ''Coregonus hoyi'' into Lake Ontario by the year 2015.<ref>United States Fish and Wildlife Service. Region 3 USFWS Offices Assist Lake Ontario with Bloater Chub Reintroduction Efforts. Field Notes. United States Fish and Wildlife Service, 1 March 2012. Web. 6 January 2015. [http://www.fws.gov/FieldNotes/regmap.cfm?arskey=31801 USFWS - Bloater Reintroduction Efforts (2012)].</ref>


== Taxonomy and etymology ==
== Taxonomy and etymology ==


The specific epithet of the bloater is given after Dr. P. R. Hoy of [[Racine, Wisconsin]]. Dr. Hoy collected the first specimens of this species in 1870 while [[dredging]] in Lake Michigan at least {{convert|16|mi|km}} off Racine, at depths of 50 to 70&nbsp;fathoms (90–130&nbsp;m). Hoy did not describe the fish himself, but had icthyologist James W. Milner name the species.<ref name="Smith">{{harvnb|Smith|1895}}</ref> Milner placed it in the [[genus]] ''Argyrosomus'', now considered a [[junior synonym]] of ''[[Coregonus]]'', the genus in which the bloater is now placed.<ref name="Hubbs">{{harvnb|Hubbs|Lagler|Smith|2004|pp=145, 160}}</ref> The generic name ''Coregonus'', given by [[Carl Linnaeus]] in his 1758 [[10th edition of Systema Naturae|tenth edition]] of ''[[Systema Naturae|Systema Naturæ]]'', is derived from [[Greek language|Greek]] and means "angled eye", referring to the tilted pupil of whitefishes.<ref>{{harvnb|Dickson|2008|p= 40}}</ref> It is closely related to the cisco or lake herring, ''[[Coregonus artedi]]'', and the [[shortjaw cisco]], both of which it is known to [[hybrid (biology)|hybridise]] with.<ref name="Becker 356"/> The [[common name]] of the bloater comes from the swollen appearance it has after being brought up from the deep waters it inhabits.<ref name="Page"/> The same name is given to certain type of smoked [[herring]] in Britain, which is swelled in its preparation.<ref>{{harvnb|Partridge|1983|p= 50}}</ref> The bloater is one of the several taxa in the ''[[Coregonus artedi]]'' [[species complex|complex]] of freshwater whitefishes, which sometimes all are considered to belong to a single species.{{cn|date=October 2012}}
The specific epithet of the bloater is given after Dr. P. R. Hoy of [[Racine, Wisconsin]]. Dr. Hoy collected the first specimens of this species in 1870 while [[dredging]] in Lake Michigan at least {{convert|16|mi|km}} off Racine, at depths of 50 to 70&nbsp;fathoms (90–130&nbsp;m). Hoy did not describe the fish himself, but had ichthyologist James W. Milner name the species.<ref name="Smith">{{harvnb|Smith|1895}}</ref> Milner placed it in the [[genus]] ''Argyrosomus'', now considered a [[junior synonym]] of ''[[Coregonus]]'', the genus in which the bloater is now placed.<ref name="Hubbs">{{harvnb|Hubbs|Lagler|Smith|2004|pp=145, 160}}</ref> The generic name ''Coregonus'', given by [[Carl Linnaeus]] in his 1758 [[10th edition of Systema Naturae|tenth edition]] of ''[[Systema Naturae|Systema Naturæ]]'', is derived from [[Greek language|Greek]] and means "angled eye", referring to the tilted pupil of whitefishes.<ref>{{harvnb|Dickson|2008|p= 40}}</ref> It is closely related to the cisco or lake herring, ''[[Coregonus artedi]]'', and the [[shortjaw cisco]], both of which it is known to [[hybrid (biology)|hybridise]] with.<ref name="Becker 356"/> The [[common name]] of the bloater comes from the swollen appearance it has after being brought up from the deep waters it inhabits.<ref name="Page"/> The same name is given to certain type of smoked [[herring]] in Britain, which is swelled in its preparation.<ref>{{harvnb|Partridge|1983|p= 50}}</ref> The bloater is one of the several taxa in the ''[[Coregonus artedi]]'' [[species complex|complex]] of freshwater whitefishes, which sometimes all are considered to belong to a single species.<ref>{{cite book|url=http://www.glfc.org/pubs/misc/Ciscoes_of_the_Laurentian_Great_Lakes_and_Lake_Nipigon.pdf|title=Ciscoes (''Coregonus'', subgenus ''Leucichthys'') of the Laurentian Great Lakes and Lake Nipigon|publisher=Great Lakes Fishery Commission|year=2016|author=Eshenroder, R.L.|author2= Vecsei, P.|author3=Gorman, O.T.|author4=Yule, D.L.|author5=Pratt, T.C.|author6= Mandrak, N.E.|author7= Bunnell, D.B.|author8=Muir, A.M.}}</ref>


== Ecology and behaviour ==
== Ecology and behaviour ==
[[File:Coregonus hoyi illustration.jpg|thumb|left|Illustration from ''The Natural History of Useful Aquatic Animals'']]
[[File:Coregonus hoyi illustration.jpg|thumb|left|Illustration from ''The Natural History of Useful Aquatic Animals'']]


The bloater is found at depths of {{convert|30|to|198|m|ft}}.<ref name="base"/> There it inhabits underwater slopes, and is tolerant of temperatures between 34.7 to 52.4 degrees Fahrenheit (1.5 to 11.4 Celsius). When it is brought to the surface its [[gas bladder]] expands, giving it a swollen appearance.<ref name="Becker 356"/>
The bloater is found at depths of {{convert|30|to|198|m|ft}}.<ref name="base"/> There it inhabits underwater slopes, and is tolerant of temperatures between 34.7 and 52.4 degrees Fahrenheit (1.5 to 11.4 Celsius). When it is brought to the surface its [[gas bladder]] expands, giving it a swollen appearance.<ref name="Becker 356"/>


The bloater feeds mostly on animals living at the lake bottom ([[zoobenthos]]), but will sometimes eat small drifting animals, or [[zooplankton]]. The shrimp ''[[Mysis diluviana]]'', and the [[amphipod]] ''[[Diporeia hoyi]]'', also named after P. R. Hoy, are recorded as food items.<ref name="base"/> The [[lake trout]], various species of introduced [[salmon]], and the [[burbot]] all are known to prey on the bloater.<ref name="base"/> In the nineteenth century it was abundant, and was often caught by fishermen, among whom it was known as the "moon-eye". It was considered a good [[panfish]], but too small to be marketable.<ref name="Smith"/> Since most of the other "chubs" of the Great Lakes have become extinct, the average size of the bloater has increased, and it is caught and smoked in the United States. The bloater is ignored by sport fishermen, since it is small and found at great depths, and it has too small of a mouth to be used as bait.<ref name="seagrant">[[#Wisconsin Sea Grant2010|Wisconsin Sea Grant 2010]]</ref>
The bloater feeds mostly on animals living at the lake bottom ([[zoobenthos]]), but will sometimes eat small drifting animals, or [[zooplankton]]. The shrimp ''[[Mysis diluviana]]'', and the [[amphipod]] ''[[Diporeia hoyi]]'', also named after P. R. Hoy, are recorded as food items.<ref name="base"/> The [[lake trout]], various species of introduced [[salmon]], and the [[burbot]] all are known to prey on the bloater.<ref name="base"/> In the nineteenth century it was abundant, and was often caught by fishermen, among whom it was known as the "moon-eye". It was considered a good [[panfish]], but too small to be marketable.<ref name="Smith"/> Since most of the other "chubs" of the Great Lakes have become extinct, the average size of the bloater has increased, and it is caught and smoked in the United States. The bloater is ignored by sport fishermen, since it is small and found at great depths, and it has too small of a mouth to be used as bait.<ref name="seagrant">[[#Wisconsin Sea Grant2010|Wisconsin Sea Grant 2010]]</ref>
Line 43: Line 39:


== References ==
== References ==
{{reflist|colwidth=30em}}
{{Reflist|colwidth=30em}}


== Works cited ==
== Works cited ==
* {{cite book|last=Becker|first= George C. |year=1983|url=http://digital.library.wisc.edu/1711.dl/EcoNatRes.FishesWI |title=Fishes of Wisconsin|location=Madison, Wisconsin|publisher=University of Wisconsin Press|isbn= 0-299-08790-5|ref=harv}}
* {{cite book|last=Becker|first= George C. |year=1983|url=http://digital.library.wisc.edu/1711.dl/EcoNatRes.FishesWI |title=Fishes of Wisconsin|location=Madison, Wisconsin|publisher=University of Wisconsin Press|isbn= 0-299-08790-5}}
* {{cite journal|last=Crowder|first= Larry B.|first2= Fred P.|last2= Binkowski |year=1983|title=Foraging behaviors and the interaction of alewife, ''Alosa pseudoharengus'', and bloater, ''Coregonus hoyi''|journal=Environmental Biology of Fishes|volume=8|issue=2|pages=105–113|doi=10.1007/BF00005177|ref=harv}}
* {{cite journal|last1=Crowder|first1= Larry B.|first2= Fred P.|last2= Binkowski |year=1983|title=Foraging behaviors and the interaction of alewife, ''Alosa pseudoharengus'', and bloater, ''Coregonus hoyi''|journal=Environmental Biology of Fishes|volume=8|issue=2|pages=105–113|doi=10.1007/BF00005177|s2cid= 46623493}}
* {{cite book|last=Dickson|first= Tom |year=2008|title=The Great Minnesota Fish Book|location=Minneapolis, Minnesota|publisher= University of Minnesota Press|isbn= 978-0-8166-5135-1|ref=harv}}
* {{cite book|last=Dickson|first= Tom |year=2008|title=The Great Minnesota Fish Book|location=Minneapolis, Minnesota|publisher= University of Minnesota Press|isbn= 978-0-8166-5135-1}}
* {{cite web|editor-last=Froese|editor-first= Rainer |editor2-last= Pauly|editor2-first=Daniel|year=2009|title=''Coregonus hoyi |work= [[FishBase]]|url=http://www.fishbase.org/summary/SpeciesSummary.php?genusname=Coregonus&speciesname=hoyi|accessdate=1 February 2010|date= February 2010|ref=harv}}
* {{cite web|editor-last=Froese|editor-first= Rainer |editor2-last= Pauly|editor2-first=Daniel|year=2009|title=''Coregonus hoyi'' |work= [[FishBase]]|url=http://www.fishbase.org/summary/SpeciesSummary.php?genusname=Coregonus&speciesname=hoyi|access-date=1 February 2010}}
* {{IUCN|last=Gimenez Dixon|first=M.|year=1996|ID=5366|title=''Coregonus hoyi''|version=2009.2}}
* {{Cite iucn | last = Gimenez Dixon | first = M. | title = ''Coregonus hoyi'' | volume = 1996 | page = e.T5366A11123739 | date = 1996 | doi = 10.2305/IUCN.UK.1996.RLTS.T5366A11123739.en }}
* {{cite journal|last=Hesselberg|first= Robert J.|first2=James P. |last2=Hickey|first3=David A. |last3=Nortrup|first4= Wayne A. |last4=Willford|year=1990|url= http://www.iaglr.org/jglr/db/searchprocess.php?terms=great+lakes&title=title&key_words=key_words&abstract=abstract&author=&year=&vol=&issue=&issbool=&total=1278&termbool=any&authbool=any&yearbool=any&volbool=any&all=&numres=10&search_order=oldest&pub_id=1042&mode=view&table=yes |title=Contaminant residues in the bloater (''Coregonus hoyi'') of Lake Michigan, 1969–1986|journal=Journal of Great Lakes Research|volume=16|issue=1|pages=121–129|ref=harv}}
* {{cite journal|last1=Hesselberg|first1=Robert J.|first2=James P.|last2=Hickey|first3=David A.|last3=Nortrup|first4=Wayne A.|last4=Willford|year=1990|url=http://www.iaglr.org/jglr/db/searchprocess.php?terms=great+lakes&title=title&key_words=key_words&abstract=abstract&author=&year=&vol=&issue=&issbool=&total=1278&termbool=any&authbool=any&yearbool=any&volbool=any&all=&numres=10&search_order=oldest&pub_id=1042&mode=view&table=yes|title=Contaminant residues in the bloater (''Coregonus hoyi'') of Lake Michigan, 1969–1986|journal=Journal of Great Lakes Research|volume=16|issue=1|pages=121–129|doi=10.1016/s0380-1330(90)71403-7|access-date=2010-02-16|archive-url=https://web.archive.org/web/20110728130401/http://www.iaglr.org/jglr/db/searchprocess.php?terms=great+lakes&title=title&key_words=key_words&abstract=abstract&author=&year=&vol=&issue=&issbool=&total=1278&termbool=any&authbool=any&yearbool=any&volbool=any&all=&numres=10&search_order=oldest&pub_id=1042&mode=view&table=yes|archive-date=2011-07-28|url-status=dead}}
* {{cite book|last=Hubbs|first= Carl C.|last2=Lagler|first2=Karl F.|last3= Smith|first3=Gerald R.|year=2004|title=Fishes of the Great Lakes Region|edition=revised|location= Ann Arbor, Michigan|publisher= University of Michigan Press|isbn= 0-472-11371-2|ref=harv}}
* {{cite book|last1=Hubbs|first1= Carl C.|last2=Lagler|first2=Karl F.|last3= Smith|first3=Gerald R.|year=2004|title=Fishes of the Great Lakes Region|edition=revised|location= Ann Arbor, Michigan|publisher= University of Michigan Press|isbn= 0-472-11371-2}}
* {{cite book|last=Page|first= Lawrence M.|last2= Burr|first2=Brooks M. |year=1991|title=A Field Guide to Freshwater Fishes|location=Boston, Massachusetts|publisher= Houghton Mifflin|isbn= 0-395-91091-9|ref=harv}}
* {{cite book|last1=Page|first1= Lawrence M.|last2= Burr|first2=Brooks M. |year=1991|title=A Field Guide to Freshwater Fishes|url=https://archive.org/details/fieldguidetofres00lawr|url-access=registration|location=Boston, Massachusetts|publisher= Houghton Mifflin|isbn= 0-395-91091-9}}
* {{Cite book|last=Partridge|first=Eric|authorlink=Eric Partridge|title=Origins: A Short Etymological Dictionary of Modern English|publisher=Greenwich House|year=1983|location=New York|isbn=0-517-414252|ref=harv}}
* {{Cite book|last=Partridge|first=Eric|author-link=Eric Partridge|title=Origins: A Short Etymological Dictionary of Modern English|publisher=Greenwich House|year=1983|location=New York|isbn=0-517-414252|url-access=registration|url=https://archive.org/details/originsshortetym0000part}}
* {{cite journal|last=Rice|first=James A.|first2=Larry B. |last2=Crowder|first3= Fred P. |last3=Binkowski |year=1987|title=Evaluating Potential Sources of Mortality for Larval Bloater (''Coregonus hoyi''): Starvation and Vulnerability to Predation|journal=Canadian Journal of Fisheries and Aquatic Sciences|volume=44|issue=2|pages=467–472|doi=10.1139/f87-055|ref=harv}}
* {{cite journal|last1=Rice|first1=James A.|first2=Larry B. |last2=Crowder|first3= Fred P. |last3=Binkowski |year=1987|title=Evaluating Potential Sources of Mortality for Larval Bloater (''Coregonus hoyi''): Starvation and Vulnerability to Predation|journal=Canadian Journal of Fisheries and Aquatic Sciences|volume=44|issue=2|pages=467–472|doi=10.1139/f87-055}}
* {{cite journal|last=Smith|first=Hugh M. |year=1895|title=Notes on Two Hitherto Unrecognised Species of American Whitefishes|editor-first= McDonald|editor-last=Marshall|url=http://books.google.com/books?id=Xtw_AAAAYAAJ |journal=Bulletin of the United States Fish Commission|volume= XIV|pages=1–14|ref=harv}}
* {{cite journal|last=Smith|first=Hugh M. |year=1895|title=Notes on Two Hitherto Unrecognised Species of American Whitefishes|editor-first= McDonald|editor-last=Marshall|url=https://books.google.com/books?id=Xtw_AAAAYAAJ |journal=Bulletin of the United States Fish Commission|volume= XIV|pages=1–14}}
* {{cite web|url=http://www.seagrant.wisc.edu/greatlakesfish/framefish.html |title=Fish of the Great Lakes: Profiles|publisher=Wisconsin Sea Grant|accessdate= 12 February 2010|ref=Wisconsin Sea Grant2010}}
* {{cite web|url=http://www.seagrant.wisc.edu/greatlakesfish/framefish.html|title=Fish of the Great Lakes: Profiles|publisher=Wisconsin Sea Grant|access-date=12 February 2010|ref=Wisconsin Sea Grant2010|archive-url=https://web.archive.org/web/20100323091913/http://www.seagrant.wisc.edu/greatlakesfish/framefish.html|archive-date=23 March 2010|url-status=dead}}


== External links ==
== External links ==
* {{commons category-inline|Coregonus hoyi}}
* {{Commons category-inline|Coregonus hoyi}}
* {{wikispecies-inline|Coregonus hoyi}}
* {{Wikispecies-inline|Coregonus hoyi}}
* [http://animaldiversity.ummz.umich.edu/site/accounts/information/Coregonus_hoyi.html Animal Diversity Web]
* [http://animaldiversity.ummz.umich.edu/site/accounts/information/Coregonus_hoyi.html Animal Diversity Web]


{{Whitefish}}
{{Whitefish}}


{{Taxonbar|from=Q1314556}}
[[Category:Coregonus]]

[[Category:Coregonus|hoyi]]
[[Category:Fish of the Great Lakes]]
[[Category:Fish of the Great Lakes]]
[[Category:Animals described in 1874]]
[[Category:Fish described in 1874]]

Latest revision as of 19:29, 17 March 2022

Bloater
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Salmoniformes
Family: Salmonidae
Genus: Coregonus
Species:
C. hoyi
Binomial name
Coregonus hoyi
(Milner, 1874)
Synonyms

Argyrosomus hoyi Milner, 1874

Coregonus hoyi, also known as the bloater, is a species or form of freshwater whitefish in the family Salmonidae. It is a silvery-coloured herring-like fish, 25.5 centimetres (10.0 in) long. It is found in most of the Great Lakes and in Lake Nipigon, and inhabits underwater slopes. This fish is not to be confused with the extinct deepwater cisco (Coregonus johannae), a large fish that shared a common name with the bloater.

Description[edit]

The bloater is a small, silvery-coloured whitefish with a pink and purple iridescence. It has a greenish tinge above, and a whitish belly.[2] It is very similar to the kiyi, from which it may be distinguished by its lighter upper lip and smaller eye.[3] Its body is deepest at its middle, it has small and pale fins,[4] and it has 40–47 long gill rakers.[3] The discoverer of the bloater, P. R. Hoy, thought it to be "the most beautiful of the white fish".[2] It reaches a maximum total length of 37.0 centimetres (14.6 in) and commonly is 25.5 centimetres (10.0 in).[5]

Distribution[edit]

The bloater is native to all of the Great Lakes (except Lake Erie) and in Lake Nipigon. Across its range it is in decline, and it is listed as Vulnerable to global extinction by the IUCN Red List.[1] It was extirpated in Lake Ontario and is extirpated in Lake Nipigon, is uncommon in Lake Michigan and is in decline Lakes Superior and Huron.[3][4] This decline is caused mostly by predation by the alewife,[6] and also by sea lamprey predation[7] and pollution.[8]

However, efforts to re-introduce the species in to Lake Ontario have been met with great success.[9] Multiple North American fishery agencies have aided in the bloater's return to the lake, due to the positive impact it could have on its food web. Recent studies have shown that this fish has made a surprising comeback, and it is now re-established in Lake Ontario.[10] State, provincial and federal agencies aim to stock 500,000 Coregonus hoyi into Lake Ontario by the year 2015.[11]

Taxonomy and etymology[edit]

The specific epithet of the bloater is given after Dr. P. R. Hoy of Racine, Wisconsin. Dr. Hoy collected the first specimens of this species in 1870 while dredging in Lake Michigan at least 16 miles (26 km) off Racine, at depths of 50 to 70 fathoms (90–130 m). Hoy did not describe the fish himself, but had ichthyologist James W. Milner name the species.[12] Milner placed it in the genus Argyrosomus, now considered a junior synonym of Coregonus, the genus in which the bloater is now placed.[4] The generic name Coregonus, given by Carl Linnaeus in his 1758 tenth edition of Systema Naturæ, is derived from Greek and means "angled eye", referring to the tilted pupil of whitefishes.[13] It is closely related to the cisco or lake herring, Coregonus artedi, and the shortjaw cisco, both of which it is known to hybridise with.[2] The common name of the bloater comes from the swollen appearance it has after being brought up from the deep waters it inhabits.[3] The same name is given to certain type of smoked herring in Britain, which is swelled in its preparation.[14] The bloater is one of the several taxa in the Coregonus artedi complex of freshwater whitefishes, which sometimes all are considered to belong to a single species.[15]

Ecology and behaviour[edit]

Illustration from The Natural History of Useful Aquatic Animals

The bloater is found at depths of 30 to 198 metres (98 to 650 ft).[5] There it inhabits underwater slopes, and is tolerant of temperatures between 34.7 and 52.4 degrees Fahrenheit (1.5 to 11.4 Celsius). When it is brought to the surface its gas bladder expands, giving it a swollen appearance.[2]

The bloater feeds mostly on animals living at the lake bottom (zoobenthos), but will sometimes eat small drifting animals, or zooplankton. The shrimp Mysis diluviana, and the amphipod Diporeia hoyi, also named after P. R. Hoy, are recorded as food items.[5] The lake trout, various species of introduced salmon, and the burbot all are known to prey on the bloater.[5] In the nineteenth century it was abundant, and was often caught by fishermen, among whom it was known as the "moon-eye". It was considered a good panfish, but too small to be marketable.[12] Since most of the other "chubs" of the Great Lakes have become extinct, the average size of the bloater has increased, and it is caught and smoked in the United States. The bloater is ignored by sport fishermen, since it is small and found at great depths, and it has too small of a mouth to be used as bait.[7]

Spawning occurs all year round, but is usually in the winter or autumn. Spawning occurs at depths of 37 to 92 metres (121 to 302 ft).[16] The amount of eggs produced by the female varies depending upon her size, and ranges between 3,230 and 18,768.[16] Eggs incubate for 4 months, and bloaters are 1.01 centimetres (0.40 in) in length at hatching.[16] Larval bloaters head to the cool bottom of lakes before becoming pelagic,[16] and by their first summers they become bottom-dwellers.[5] Larval bloaters have a high mortality until they become large enough to avoid predation by other bloaters and alewives.[17] It is slow-growing, because of the scarcity of food in its habitat.[7] The bloater's average length at maturity is 18.3 centimetres (7.2 in), and maximum age reported from otoliths is 10 years.[5]

References[edit]

  1. ^ a b Gimenez Dixon, M. (1996). "Coregonus hoyi". IUCN Red List of Threatened Species. 1996: e.T5366A11123739. doi:10.2305/IUCN.UK.1996.RLTS.T5366A11123739.en. Retrieved 19 November 2021.
  2. ^ a b c d Becker 1983, p. 356
  3. ^ a b c d Page & Burr 1991, p. 44
  4. ^ a b c Hubbs, Lagler & Smith 2004, pp. 145, 160
  5. ^ a b c d e f Froese & Pauly 2009
  6. ^ Crowder & Binkowski 1983
  7. ^ a b c Wisconsin Sea Grant 2010
  8. ^ Hesselberg et al. 1990
  9. ^ New York State. Department of Environmental Conservation. Deepwater Ciscos to Be Re-Introduced Into Lake Ontario. New York State Department of Environmental Conservation. New York State, 8 November 2012. Web. 5 January 2015. New York DEC - Deepwater Cisco, 2012 Press Release
  10. ^ United States Fish and Wildlife Service. Lake Michigan Wild Egg Collections Lead to the Return of Deepwater Cisco in Lake Ontario! Field Notes. United States Fish and Wildlife Service, 1 March 2014. Web. 5 January 2015. USFWS - Return of Deepwater Cisco! (2014).
  11. ^ United States Fish and Wildlife Service. Region 3 USFWS Offices Assist Lake Ontario with Bloater Chub Reintroduction Efforts. Field Notes. United States Fish and Wildlife Service, 1 March 2012. Web. 6 January 2015. USFWS - Bloater Reintroduction Efforts (2012).
  12. ^ a b Smith 1895
  13. ^ Dickson 2008, p. 40
  14. ^ Partridge 1983, p. 50
  15. ^ Eshenroder, R.L.; Vecsei, P.; Gorman, O.T.; Yule, D.L.; Pratt, T.C.; Mandrak, N.E.; Bunnell, D.B.; Muir, A.M. (2016). Ciscoes (Coregonus, subgenus Leucichthys) of the Laurentian Great Lakes and Lake Nipigon (PDF). Great Lakes Fishery Commission.
  16. ^ a b c d Becker 1983, pp. 357–358
  17. ^ Rice, Crowder & Binkowski 1987

Works cited[edit]

External links[edit]