Gray brocket: Difference between revisions
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{{Short description|Species of deer}} |
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{{Taxobox |
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{{Speciesbox |
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| name = Gray brocket |
| name = Gray brocket |
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| image = Mazama gouazoubira |
| image = Brocket deer Mazama gouazoubira Santa fe do Sul 1.jpg |
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| image_caption = |
| image_caption = Male |
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| image2 = Grey brocket (Mazama gouazoubira) young female.JPG |
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| image2_caption = Young female<br/>The [[Pantanal]], [[Brazil]] |
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| status = LC |
| status = LC |
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| status_system = |
| status_system = IUCN3.1 |
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| status_ref = <ref name=iucn>{{ |
| status_ref = <ref name="iucn status 11 November 2021">{{cite iucn |author=Black-Decima, P.A. |author2=Vogliotti, A. |date=2016 |title=''Mazama gouazoubira'' |volume=2016 |page=e.T29620A22154584 |doi=10.2305/IUCN.UK.2016-2.RLTS.T29620A22154584.en |access-date=11 November 2021}}</ref> |
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| |
| genus = Mazama |
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⚫ | |||
| phylum = [[Chordate|Chordata]] |
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⚫ | |||
| classis = [[Mammal]]ia |
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| ordo = [[Artiodactyla]] |
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| familia = [[Cervidae]] |
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| genus = ''[[Mazama (genus)|Mazama]]'' |
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⚫ | |||
⚫ | |||
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| synonyms = ''Mazama gouazoupira'' <small>([[lapsus]])</small> |
| synonyms = ''Mazama gouazoupira'' <small>([[lapsus]])</small> |
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⚫ | |||
}} |
}} |
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The '''gray brocket''' (''Mazama gouazoubira''), also known as the brown brocket, is a species of [[brocket deer]]<ref name = MSW3>{{MSW3 Artiodactyla | id = 14200247 | page = }}</ref> from northern [[Argentina]], [[Bolivia]], eastern and southern [[Brazil]], [[Paraguay]] and [[Uruguay]]. It formerly included the [[Amazonian |
The '''gray brocket''' ('''''Mazama gouazoubira'''''), also known as the '''brown brocket''', is a species of [[brocket deer]]<ref name = MSW3>{{MSW3 Artiodactyla | id = 14200247 | page = }}</ref> from northern [[Argentina]], [[Bolivia]], southern [[Peru]], eastern and southern [[Brazil]], [[Paraguay]], and [[Uruguay]]. It formerly included the [[Amazonian brown brocket]] (''M. nemorivaga'')<ref>Rossi, R. V. (2000). ''Taxonomia de Mazama Rafinesque, 1817 do Brasil (Artiodactyla, Cervidae).'' M.Sc. Thesis, Universidade de São Paulo.</ref> and sometimes also the [[Yucatan brown brocket]] (''Odocoileus pandora'') as [[subspecies]].<ref>Medellín, R. A., A. L. Gardner, J. M. Aranda (1998). ''The taxonomic status of the Yucatán brown brocket, Mazama pandora (Mammalia: Cervidae).'' Proceedings of the Biological Society of Washington 111 (1): 1–14.</ref> Unlike other species of brocket deer in its range, the gray brocket has a gray-brown fur without reddish tones.<ref name=HMW>Wilson, D. E., Mittermeier, R. A., editors (2011). ''[[Handbook of the Mammals of the World]], vol. 2 (Hoofed Mammals), p. 441. {{ISBN|978-84-96553-77-4}}</ref> |
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==Name== |
==Name== |
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The scientific name of the gray brocket deer comes from [[Félix de Azara]]'s |
The scientific name of the gray brocket deer comes from [[Félix de Azara]]'s ''gouazoubira''. Azara was the first to provide a quality description of the small deer in the Americas, and he referred to the [[red brocket]] as ''gouazoupita'', while he referred to the gray brocket as ''gouazoubira'', which has been maintained in the current species name, ''Mazama gouazoubira''. Though sometimes it is seen as ''Mazama gouazou<u>p</u>ira'', this is incorrect, perhaps mistakenly replacing a "b" with a "p" from Azara's name for the red brocket, Gouazoupita.<ref name =Azara>Allen, Joel Asaph. [https://books.google.com/books?id=5QJLAAAAYAAJ&dq=azara+gouazoubira&pg=PA523 ''Bulletin of the American Museum of Natural History, Volume 34'']. New York: American Museum of Natural History, 1915. p. 522-523.</ref> |
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==Physical description== |
==Physical description== |
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The coat of a gray brocket can range from gray-brown to dark brown. Lighter, browner coats are seen in those that live in grasslands, whereas grayer, darker colors are more prevalent in forest regions. Significant variation can be seen between individuals of the same population as well.<ref name=iucn/> Their tails are white on the bottom, and on their flanks the hair is of a lighter color than that of the rest of the body. The body length of a |
The coat of a gray brocket can range from gray-brown to dark brown. Lighter, browner coats are seen in those that live in grasslands, whereas grayer, darker colors are more prevalent in forest regions. Significant variation can be seen between individuals of the same population, as well.<ref name="iucn status 11 November 2021" /> Their tails are white on the bottom, and on their flanks the hair is of a lighter color than that of the rest of the body. The body length of a gray brocket deer can range from {{convert|85|to|105|cm|abbr=on}} and the weight from {{convert|11|to|25|kg|abbr=on}}.<ref name=HMW/> |
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In addition to the obvious differences in color, the gray brocket is generally smaller than the |
In addition to the obvious differences in color, the gray brocket is generally smaller than the red brocket.<ref name=HMW/> Separation of the gray brocket and the Amazonian brown brocket using external features is far harder, but the former has a more orange rump, bigger, more rounded ears, wider [[auditory bulla]]e, and smaller eyes.<ref name="iucn status 11 November 2021" /> |
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==Distribution and habitat== |
==Distribution and habitat== |
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The gray brocket is found in northern Argentina, Bolivia, eastern and southern Brazil, Uruguay, and Paraguay.<ref name=iucn/> They range from the western part of South America, in the East [[Andes]] foothills in Bolivia and Argentina. From there it extends eastward, through |
The gray brocket is found in northern Argentina, Bolivia, southern Peru, eastern and southern Brazil, Uruguay, and Paraguay.<ref name="iucn status 11 November 2021" /> They range from the western part of South America, in the East [[Andes]] foothills in Bolivia, Peru, and Argentina. From there, it extends eastward, through semiopen regions such as the [[Gran Chaco]], [[Cerrado]], and [[Caatinga]], to the Atlantic Ocean. It does not live in the [[Amazon Rainforest]] region (where it is replaced by the Amazonian brown brocket), and its distribution runs south to the mouth of the [[Paraná River]] in Argentina.<ref name="iucn status 11 November 2021" /> |
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It is found in brushy vegetation and forest edge, but typically avoids both open habitats without cover and dense forest.<ref name=HMW/> |
It is found in brushy vegetation and forest edge, but typically avoids both open habitats without cover and dense forest.<ref name=HMW/> |
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==Behavior== |
==Behavior== |
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===Diet=== |
===Diet=== |
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The gray brocket is a [[herbivore]] that chooses what it eats selectively, though it does eat a wide variety of plants. During some periods, the grays brocket may become [[frugivorous |
The gray brocket is a [[herbivore]] that chooses what it eats selectively, though it does eat a wide variety of plants. During some periods, the grays brocket may become [[frugivorous|primarily fruit-eating]], but this depends on the season, area, and availability of fruits. Many of the fruits are in dense forests, which it for the most part avoids, but it does find other sources of fruits and also other sources of food.<ref name="iucn status 11 November 2021" /> In the dry season, they eat the fruit from trees such ''[[Caesalpinia paraguariensis]]'', which produce dry, tough fruits.<ref name="Michigan">Haralson, C. 2004. [http://animaldiversity.ummz.umich.edu/site/accounts/information/Mazama_gouazoubira.html ''Mazama gouazoubira''] (On-line), Animal Diversity Web. Downloaded on 9 October 2011.<!-- USE THIS SOURCE WITH GREAT CARE! It is based on an outdated, old taxonomy, where both M. nemorivaga and M. pandora were included as subspecies of M. gouazoubira. ONLY add info from it if you're sure the info that relates specifically to M. gouazoubira (and not M. nemorivaga or M. pandora) --></ref> Periodically and locally, they also eat cacti, [[bromeliad]] fruits, and leaves and roots from [[succulent]]s to satisfy their water requirements.<ref name="Michigan"/> |
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===Reproduction=== |
===Reproduction=== |
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The gray brocket reaches sexual maturity |
The gray brocket reaches sexual maturity around 18 months old.<ref name=Black>Black-Dècima, P. 2000. [http://www.sarem.org.ar/mediawiki/images/e/e0/MN_7_1.pdf#page=4 Home range, social structure, and scent marking behavior in brown brocket deer (''Mazama gouazoubira'') in a large enclosure] {{Webarchive|url=https://web.archive.org/web/20120509135644/http://www.sarem.org.ar/mediawiki/images/e/e0/MN_7_1.pdf#page=4 |date=2012-05-09 }}. Mastozoologia Neotropical, 7(1): 5-14.</ref> No distinct breeding season is seen. The [[gestation]] periods lasts around 7 months, and ''[[post partum]]'' [[estrus]] occurs.<ref name="iucn status 11 November 2021" /> Thus, a gray brocket can produce two offspring in a year.<ref name=McCarthy>McCarthy, Andrew, Raleigh Blouch, Donald Moore, and Christen M. Wemmer. [https://books.google.com/books?id=17Y-TL774RUC&dq=Mazama+gouazoubira&pg=PA12 Deer: status survey and conservation action plan. IUCN, 1998 - Nature. P. 32-33].</ref> After birth, the doe takes care of the fawn until it is weaned, though the time until it is weaned is unknown. During this time, the fawn remains hidden and is fed by the doe. |
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===Scent-marking=== |
===Scent-marking=== |
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⚫ | Four types of [[scent marking]] have been observed as a means of communication, due to their performance of these behaviors in concurrence with certain postures. These scent-marking behaviors include [[urination]], [[defecation]], thrashing, and forehead rubbing. Such scent-marking tactics can be part of a claim on territory if a number of markings are placed within a concentrated area by a single gray brocket.<ref name="iucn status 11 November 2021" /> |
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{{unreferenced section|date=September 2012}} |
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⚫ | Four types of [[scent marking]] have been observed as a means of communication, due to their performance of these behaviors in concurrence with certain postures. These scent-marking behaviors include [[urination]], [[defecation]], thrashing, and forehead rubbing. Such scent-marking tactics can be part of a claim on territory if a number of markings are placed within a concentrated area by a single gray brocket. |
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===Other habits=== |
===Other habits=== |
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Gray brockets are active during the day, but generally only |
Gray brockets are active during the day, but generally only appear in the open at night.<ref name=HMW/> They are solitary and territorial, with the male defending a larger territory and the female a smaller core area.<ref name=HMW/> |
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Unless under cover, they are very shy and nervous when held captive. |
Unless under cover, they are very shy and nervous when held captive. |
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== Hybrids with [[Mazama nemorivaga]] == |
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The occurrence of hybrids between the two species are documented.<ref name="Galindoetal2021">{{cite journal |last1=Galindo |first1=David Javier |last2=Martins |first2=Gabriela Siqueira |last3=Vozdova |first3=Miluse |last4=Cernohorska |first4=Halina |last5=Kubickova |first5=Svatava |last6=Bernegossi |first6=Agda Maria |last7=Kadlcikova |first7=Dita |last8=Rubes |first8=Jiri |last9=Duarte |first9=José Maurício Barbanti |title=Chromosomal Polymorphism and Speciation: The Case of the Genus Mazama (Cetartiodactyla; Cervidae) |journal=Genes |date=February 2021 |volume=12 |issue=2 |pages=165 |doi=10.3390/genes12020165 |doi-access=free |pmc=7911811 }}</ref> |
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==Population and conservation== |
==Population and conservation== |
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Overall the gray |
Overall, the gray brocket remains widespread and common, but it has decreased or even disappeared from near human populations.<ref name="iucn status 11 November 2021" /> In Bolivia, the population appears to remain constant despite great hunting pressure, and it is the most common deer in Brazil, though it is declining in some regions. In Argentina, it is declining due to habitat loss and hunting, and in Paraguay, it has declined from regions with high human densities.<ref name="iucn status 11 November 2021" /> The primary motive for hunting gray brockets is not pest control, as they cause a minimal amount of crop damage.<ref name="Michigan"/> <!-- However, hunters can sell the meat from one gray brocket for $15, which could be a potential motivation.<ref name=McCarthy/>{{failed verification|date=September 2012}} --> |
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The gray brocket occurs in 14 national and provincial reserves in Argentina, as well as |
The gray brocket occurs in 14 national and provincial reserves in Argentina, as well as seven reserves in Bolivia, and numerous reserves in Paraguay and Brazil. Though hunting is illegal in many areas in the gray brocket's range, bans are generally not enforced.<ref name="iucn status 11 November 2021" /> To prevent further population declines, hunting laws need to be enforced, stray dogs from human populations should be controlled, and local village populations should be educated to preserve the gray brocket populations.<ref name="iucn status 11 November 2021" /> Additionally, population studies are needed to determine the status of the gray brocket, to be better equipped to help it.<ref name=Scielo>Periago, Maria E. and Gerardo C. Leynaud. [http://www.scielo.org.ar/pdf/ecoaus/v19n1/v19n1a07.pdf Density estimates of ''Mazama gouazoubira'' (Cervidae) using the pellet count technique in the arid Chaco (Argentina)]. Ecología Austral 19:73-77. Abril 2009 Abril de 2009 Asociación Argentina de Ecología. Downloaded on 9 October 2009.</ref> |
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==References== |
==References== |
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{{ |
{{Reflist}} |
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{{Artiodactyla|R.1}} |
{{Artiodactyla|R.1}} |
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{{Taxonbar|from=Q2088042}} |
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[[Category:Mazama]] |
[[Category:Mazama (genus)]] |
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[[Category:Mammals of Argentina]] |
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[[Category:Mammals of Bolivia]] |
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[[gn:Guasuvira]] |
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[[Category:Mammals of Brazil]] |
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[[ca:Mazama bru]] |
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[[Category:Mammals of Paraguay]] |
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[[es:Mazama gouazoubira]] |
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[[ |
[[Category:Mammals of Peru]] |
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[[Category:Mammals of Uruguay]] |
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[[it:Mazama gouazoubira]] |
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[[Category:Mammals of the Andes]] |
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[[lt:Pilkoji mazama]] |
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[[Category:Fauna of the Caatinga]] |
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[[nl:Mazama gouazoubira]] |
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[[Category:Fauna of the Cerrado]] |
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[[pl:Mazama szara]] |
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[[Category:Mammals described in 1814]] |
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[[pt:Veado-virá]] |
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[[qu:Uchpa luwichu]] |
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[[tr:Kahverengi kariyaku]] |
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[[vi:Mazama gouazoubira]] |
Latest revision as of 21:35, 18 June 2024
Gray brocket | |
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Male | |
Young female The Pantanal, Brazil | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Mammalia |
Order: | Artiodactyla |
Family: | Cervidae |
Subfamily: | Capreolinae |
Genus: | Mazama |
Species: | M. gouazoubira
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Binomial name | |
Mazama gouazoubira (Fischer, 1814)
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Synonyms | |
Mazama gouazoupira (lapsus) |
The gray brocket (Mazama gouazoubira), also known as the brown brocket, is a species of brocket deer[2] from northern Argentina, Bolivia, southern Peru, eastern and southern Brazil, Paraguay, and Uruguay. It formerly included the Amazonian brown brocket (M. nemorivaga)[3] and sometimes also the Yucatan brown brocket (Odocoileus pandora) as subspecies.[4] Unlike other species of brocket deer in its range, the gray brocket has a gray-brown fur without reddish tones.[5]
Name
[edit]The scientific name of the gray brocket deer comes from Félix de Azara's gouazoubira. Azara was the first to provide a quality description of the small deer in the Americas, and he referred to the red brocket as gouazoupita, while he referred to the gray brocket as gouazoubira, which has been maintained in the current species name, Mazama gouazoubira. Though sometimes it is seen as Mazama gouazoupira, this is incorrect, perhaps mistakenly replacing a "b" with a "p" from Azara's name for the red brocket, Gouazoupita.[6]
Physical description
[edit]The coat of a gray brocket can range from gray-brown to dark brown. Lighter, browner coats are seen in those that live in grasslands, whereas grayer, darker colors are more prevalent in forest regions. Significant variation can be seen between individuals of the same population, as well.[1] Their tails are white on the bottom, and on their flanks the hair is of a lighter color than that of the rest of the body. The body length of a gray brocket deer can range from 85 to 105 cm (33 to 41 in) and the weight from 11 to 25 kg (24 to 55 lb).[5]
In addition to the obvious differences in color, the gray brocket is generally smaller than the red brocket.[5] Separation of the gray brocket and the Amazonian brown brocket using external features is far harder, but the former has a more orange rump, bigger, more rounded ears, wider auditory bullae, and smaller eyes.[1]
Distribution and habitat
[edit]The gray brocket is found in northern Argentina, Bolivia, southern Peru, eastern and southern Brazil, Uruguay, and Paraguay.[1] They range from the western part of South America, in the East Andes foothills in Bolivia, Peru, and Argentina. From there, it extends eastward, through semiopen regions such as the Gran Chaco, Cerrado, and Caatinga, to the Atlantic Ocean. It does not live in the Amazon Rainforest region (where it is replaced by the Amazonian brown brocket), and its distribution runs south to the mouth of the Paraná River in Argentina.[1]
It is found in brushy vegetation and forest edge, but typically avoids both open habitats without cover and dense forest.[5]
Behavior
[edit]Diet
[edit]The gray brocket is a herbivore that chooses what it eats selectively, though it does eat a wide variety of plants. During some periods, the grays brocket may become primarily fruit-eating, but this depends on the season, area, and availability of fruits. Many of the fruits are in dense forests, which it for the most part avoids, but it does find other sources of fruits and also other sources of food.[1] In the dry season, they eat the fruit from trees such Caesalpinia paraguariensis, which produce dry, tough fruits.[7] Periodically and locally, they also eat cacti, bromeliad fruits, and leaves and roots from succulents to satisfy their water requirements.[7]
Reproduction
[edit]The gray brocket reaches sexual maturity around 18 months old.[8] No distinct breeding season is seen. The gestation periods lasts around 7 months, and post partum estrus occurs.[1] Thus, a gray brocket can produce two offspring in a year.[9] After birth, the doe takes care of the fawn until it is weaned, though the time until it is weaned is unknown. During this time, the fawn remains hidden and is fed by the doe.
Scent-marking
[edit]Four types of scent marking have been observed as a means of communication, due to their performance of these behaviors in concurrence with certain postures. These scent-marking behaviors include urination, defecation, thrashing, and forehead rubbing. Such scent-marking tactics can be part of a claim on territory if a number of markings are placed within a concentrated area by a single gray brocket.[1]
Other habits
[edit]Gray brockets are active during the day, but generally only appear in the open at night.[5] They are solitary and territorial, with the male defending a larger territory and the female a smaller core area.[5]
Unless under cover, they are very shy and nervous when held captive.
Hybrids with Mazama nemorivaga
[edit]The occurrence of hybrids between the two species are documented.[10]
Population and conservation
[edit]Overall, the gray brocket remains widespread and common, but it has decreased or even disappeared from near human populations.[1] In Bolivia, the population appears to remain constant despite great hunting pressure, and it is the most common deer in Brazil, though it is declining in some regions. In Argentina, it is declining due to habitat loss and hunting, and in Paraguay, it has declined from regions with high human densities.[1] The primary motive for hunting gray brockets is not pest control, as they cause a minimal amount of crop damage.[7]
The gray brocket occurs in 14 national and provincial reserves in Argentina, as well as seven reserves in Bolivia, and numerous reserves in Paraguay and Brazil. Though hunting is illegal in many areas in the gray brocket's range, bans are generally not enforced.[1] To prevent further population declines, hunting laws need to be enforced, stray dogs from human populations should be controlled, and local village populations should be educated to preserve the gray brocket populations.[1] Additionally, population studies are needed to determine the status of the gray brocket, to be better equipped to help it.[11]
References
[edit]- ^ a b c d e f g h i j k l Black-Decima, P.A.; Vogliotti, A. (2016). "Mazama gouazoubira". IUCN Red List of Threatened Species. 2016: e.T29620A22154584. doi:10.2305/IUCN.UK.2016-2.RLTS.T29620A22154584.en. Retrieved 11 November 2021.
- ^ Grubb, P. (2005). "Order Artiodactyla". In Wilson, D.E.; Reeder, D.M (eds.). Mammal Species of the World: A Taxonomic and Geographic Reference (3rd ed.). Johns Hopkins University Press. pp. 637–722. ISBN 978-0-8018-8221-0. OCLC 62265494.
- ^ Rossi, R. V. (2000). Taxonomia de Mazama Rafinesque, 1817 do Brasil (Artiodactyla, Cervidae). M.Sc. Thesis, Universidade de São Paulo.
- ^ Medellín, R. A., A. L. Gardner, J. M. Aranda (1998). The taxonomic status of the Yucatán brown brocket, Mazama pandora (Mammalia: Cervidae). Proceedings of the Biological Society of Washington 111 (1): 1–14.
- ^ a b c d e f Wilson, D. E., Mittermeier, R. A., editors (2011). Handbook of the Mammals of the World, vol. 2 (Hoofed Mammals), p. 441. ISBN 978-84-96553-77-4
- ^ Allen, Joel Asaph. Bulletin of the American Museum of Natural History, Volume 34. New York: American Museum of Natural History, 1915. p. 522-523.
- ^ a b c Haralson, C. 2004. Mazama gouazoubira (On-line), Animal Diversity Web. Downloaded on 9 October 2011.
- ^ Black-Dècima, P. 2000. Home range, social structure, and scent marking behavior in brown brocket deer (Mazama gouazoubira) in a large enclosure Archived 2012-05-09 at the Wayback Machine. Mastozoologia Neotropical, 7(1): 5-14.
- ^ McCarthy, Andrew, Raleigh Blouch, Donald Moore, and Christen M. Wemmer. Deer: status survey and conservation action plan. IUCN, 1998 - Nature. P. 32-33.
- ^ Galindo, David Javier; Martins, Gabriela Siqueira; Vozdova, Miluse; Cernohorska, Halina; Kubickova, Svatava; Bernegossi, Agda Maria; Kadlcikova, Dita; Rubes, Jiri; Duarte, José Maurício Barbanti (February 2021). "Chromosomal Polymorphism and Speciation: The Case of the Genus Mazama (Cetartiodactyla; Cervidae)". Genes. 12 (2): 165. doi:10.3390/genes12020165. PMC 7911811.
- ^ Periago, Maria E. and Gerardo C. Leynaud. Density estimates of Mazama gouazoubira (Cervidae) using the pellet count technique in the arid Chaco (Argentina). Ecología Austral 19:73-77. Abril 2009 Abril de 2009 Asociación Argentina de Ecología. Downloaded on 9 October 2009.