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Lifespan, longevity, and ageing

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Maximum longevity: 13.8 years (captivity)
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Associations

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Small-mouthed salamanders are predators of small invertebrates and are preyed on by small to medium-sized predators, such as snakes, birds, and other salamanders. They are important members of healthy woodland and grassland communities. Small-mouthed salamanders are parasitized by some protozoan and helminth species, and by a cyclophyllidean cestode (Cylindrotaenia americana).

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Roy, K. 2000. "Ambystoma texanum" (On-line), Animal Diversity Web. Accessed April 27, 2013 at http://animaldiversity.ummz.umich.edu/site/accounts/information/Ambystoma_texanum.html
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Associations

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Small-mouthed salamanders have concentrations of granular glands on the top of the tail. Salamanders confronted by potential enemies raise and undulate the tail and curl the head underneath the tail. This behavior is most often used when attacked by a snake. Larvae are preyed on by dragonfly larvae and tiger salamander larvae.

Known Predators:

  • blue jays (Cyanocitta cristata)
  • garter snakes (Thamnophis)
  • water snakes (Nerodia)
  • dragonfly larvae (Odonata)
  • tiger salamander larvae (Ambystoma tigrinum)
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Roy, K. 2000. "Ambystoma texanum" (On-line), Animal Diversity Web. Accessed April 27, 2013 at http://animaldiversity.ummz.umich.edu/site/accounts/information/Ambystoma_texanum.html
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Morphology

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As its name suggests this species has a relatively small head with a blunt, short snout. The head tends to appear swollen behind the eyes and the lower jaw barely protrudes past the upper jaw. Coloration of the dorsum varies from pale gray to black. An irregular pattern of light blotches on the upper surface of specimen becoming darker on the sides and extending to the dark belly. During the breeding season small-mouthed salamanders may appear paler and have more conspicuous light markings. Adult length is normally between 11 and 17.8 cm (4.3 to 7 inches). Small-mouthed salamanders have 14 to 16 costal grooves. Males are smaller with longer and more compressed tails. Larvae usually have light bars or crossbands on an olive green or dark brown background. Near metamorphosis a dark pigment often obscures the light markings (Harding 1997).

Range length: 11 to 17.8 cm.

Other Physical Features: ectothermic ; heterothermic ; bilateral symmetry

Sexual Dimorphism: sexes shaped differently

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Roy, K. 2000. "Ambystoma texanum" (On-line), Animal Diversity Web. Accessed April 27, 2013 at http://animaldiversity.ummz.umich.edu/site/accounts/information/Ambystoma_texanum.html
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Life Expectancy

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The lifespan of small-mouthed salamanders is not known.

Average lifespan
Status: captivity:
5.3 years.

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Roy, K. 2000. "Ambystoma texanum" (On-line), Animal Diversity Web. Accessed April 27, 2013 at http://animaldiversity.ummz.umich.edu/site/accounts/information/Ambystoma_texanum.html
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Habitat

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Ambystoma texanum are most numerous in lowland floodplain woodlands. They can tolerate some human disturbances, such as habitat fragmentation and farming. They can even live in an open prairie as long as there are breeding ponds free of fish. Small-mouthed salamanders are more versatile in their breeding requirements than other Ambystoma. They can breed in woodland vernal ponds, runoff ponds, flooded areas, river backwaters, and roadside ditches. Ambystoma texanum does not travel far from breeding ponds, so good habitat near the pond is important.

Habitat Regions: temperate ; terrestrial

Terrestrial Biomes: savanna or grassland ; forest

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Roy, K. 2000. "Ambystoma texanum" (On-line), Animal Diversity Web. Accessed April 27, 2013 at http://animaldiversity.ummz.umich.edu/site/accounts/information/Ambystoma_texanum.html
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Distribution

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Small-mouthed salamanders occupy a range from northeastern Ohio west into Missouri and eastern Nebraska. The northern edge of the range is southeast Michigan and the southern range goes through western Kentucky and Tennessee to the Gulf of Mexico. They even inhabit several islands in southern Lake Erie.

Biogeographic Regions: nearctic (Native )

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Roy, K. 2000. "Ambystoma texanum" (On-line), Animal Diversity Web. Accessed April 27, 2013 at http://animaldiversity.ummz.umich.edu/site/accounts/information/Ambystoma_texanum.html
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Trophic Strategy

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Adult small-mouth salamanders eat insects, other arthropods, slugs, worms, and sometimes aquatic crustaceans. Larvae are generalist predators (Maurer and Shi 1996). They eat small aquatic invertebrates including Daphnia, isopod hatchlings and even larvae of their own or another species of Ambystoma (Harding 1997).

Animal Foods: amphibians; insects; terrestrial non-insect arthropods; mollusks; terrestrial worms; aquatic crustaceans

Primary Diet: carnivore (Insectivore , Molluscivore , Vermivore)

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Roy, K. 2000. "Ambystoma texanum" (On-line), Animal Diversity Web. Accessed April 27, 2013 at http://animaldiversity.ummz.umich.edu/site/accounts/information/Ambystoma_texanum.html
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Benefits

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Small-mouth salamanders eat slugs and worms and help keep pest species numbers down. In turn they are food for other animals.

Positive Impacts: controls pest population

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Roy, K. 2000. "Ambystoma texanum" (On-line), Animal Diversity Web. Accessed April 27, 2013 at http://animaldiversity.ummz.umich.edu/site/accounts/information/Ambystoma_texanum.html
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Benefits

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There are no negative impacts of small-mouthed salamanders on humans.

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Roy, K. 2000. "Ambystoma texanum" (On-line), Animal Diversity Web. Accessed April 27, 2013 at http://animaldiversity.ummz.umich.edu/site/accounts/information/Ambystoma_texanum.html
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Conservation Status

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Ambystoma texanum is common through much of its range. The success of small-mouthed salamanders is connected to their habitat tolerance. On the edges of their range, where numbers are low, management for this species would be beneficial--such as in Michigan, where it is listed as endangered. Management for A. texanum should be preservation of areas with known populations and maintenance of adjacent fish free ponds.

US Federal List: no special status

CITES: no special status

State of Michigan List: endangered

IUCN Red List of Threatened Species: least concern

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Roy, K. 2000. "Ambystoma texanum" (On-line), Animal Diversity Web. Accessed April 27, 2013 at http://animaldiversity.ummz.umich.edu/site/accounts/information/Ambystoma_texanum.html
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Untitled

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Ambystoma texanum hybridize with other Ambystoma species. Hybridization is most common in the areas south and west of Lake Erie.

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Roy, K. 2000. "Ambystoma texanum" (On-line), Animal Diversity Web. Accessed April 27, 2013 at http://animaldiversity.ummz.umich.edu/site/accounts/information/Ambystoma_texanum.html
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Life Cycle

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Larvae metamorphose to terrestrial salamanders in two to three months.

Development - Life Cycle: metamorphosis

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Roy, K. 2000. "Ambystoma texanum" (On-line), Animal Diversity Web. Accessed April 27, 2013 at http://animaldiversity.ummz.umich.edu/site/accounts/information/Ambystoma_texanum.html
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Reproduction

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Courtship consists of groups of males bumping and nudging the females and each other. Males will move away from the group and deposit spermatophores on the substrate or on a stick or leaf. Females then "collect" the spermatophores (Harding 1997).

Mating System: polygynandrous (promiscuous)

Ambystoma texanum breeds very early in the year. The migration to breeding ponds seems to be stimulated by just a few days of rain in late winter, frequently while ice still covers portions of the ponds. They tend to stay closer to breeding ponds in summer and late winter than other salamander species. A sibling species, A. barbouri, has a different reproductive strategy. The two species were formerly considered two races of A. texanum but now are classified as different species. Ambystoma barbouri, the "stream form," breeds in ephemeral headwater regions in contrast to A. texanum, the "pond form," which breeds in ephemeral lenthic habitats, including road side ditches, flooded areas and small ponds (Maureer and Sih 1996). Breeding begins four to five weeks later for A. texanum, which is an explosive breeder (Petranka 1984). A single female can produce 300 to 700 eggs annually, which are deposited in small loose gelatinous masses of 3 to 30 eggs. The eggs hatch in 3 to 8 weeks. The young mature to breeding size usually in their second year (Harding 1997). Size at maturity is 60 to 70 mm length from their snout to their vent (Lanoo, 2006).

Breeding interval: Small-mouthed salamanders breed once each year.

Breeding season: Small-mouthed salamders breed in early spring.

Range number of offspring: 300 to 700.

Range time to hatching: 3 to 8 weeks.

Average age at sexual or reproductive maturity (female): 2 years.

Average age at sexual or reproductive maturity (male): 2 years.

Key Reproductive Features: iteroparous ; seasonal breeding ; gonochoric/gonochoristic/dioecious (sexes separate); sexual ; fertilization (Internal ); oviparous

Once a female deposits her eggs in the water, there is no further parental care.

Parental Investment: no parental involvement; pre-fertilization (Provisioning, Protecting: Female)

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Roy, K. 2000. "Ambystoma texanum" (On-line), Animal Diversity Web. Accessed April 27, 2013 at http://animaldiversity.ummz.umich.edu/site/accounts/information/Ambystoma_texanum.html
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Small-mouth salamander

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The small-mouth salamander (Ambystoma texanum) is a species of mole salamander found in the central United States, from the Great Lakes region in Michigan to Nebraska, south to Texas, and east to Tennessee, with a population in Canada, in Pelee, Ontario. It is sometimes referred to as the Texas salamander, porphyry salamander, or the narrow-mouthed salamander. The Kelley's Island salamander (Ambystoma nothagenes) was synonymized with A. texanum in 1995.

Description

The small-mouth salamander grows from 4.5 to 7.0 in. It is typically black or dark brown in color with light-grey or silvery-colored flecking, or grey blotching. It has a fairly small head, relative to its body, and a long tail. Males are typically smaller than females. Their bellies are black, often with tiny flecks, and have 14 to 15 costal grooves.

Behavior

Small-mouth salamanders are nocturnal, often subterranean, preferring moist habitats near permanent bodies of water. Breeding occurs in the spring, with groups of salamanders congregating near the water. Females can lay up to 700 eggs, which they attach in small clumps of up to 30 eggs at a time, to rocks or vegetation under the water. Their diets include insects, slugs, and earthworms. Larvae hatch at 0.5 in (13 mm); they metamorphose in May to June at about 1.6 in (40 mm). When disturbed, the small-mouth salamander raises its tail and waves it back and forth. Being shy and sensitive, it shares breeding pools with larger spotted salamanders and marbled salamanders.

Habitat and range

Small-mouth salamanders live in moist pine woodlands and deciduous forest bottomlands, tallgrass prairies, farming areas, near temporary ponds, and along streams. Their range is from western West Virginia south to the Gulf of Mexico, west to Kansas, Oklahoma, and Texas.

Conservation

The only known Canadian population is on Pelee Island in Lake Erie. It is listed as endangered by COSEWIC.[2]

References

  1. ^ IUCN SSC Amphibian Specialist Group (2015). "Ambystoma texanum". IUCN Red List of Threatened Species. 2015: e.T59071A56561668. doi:10.2305/IUCN.UK.2015-4.RLTS.T59071A56561668.en. Retrieved 12 November 2021.
  2. ^ "Larval Amphibians of Ontario Identifier: Salamanders & Newts". Toronto Zoo.
Wikispecies has information related to Ambystoma texanum.
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Small-mouth salamander: Brief Summary

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The small-mouth salamander (Ambystoma texanum) is a species of mole salamander found in the central United States, from the Great Lakes region in Michigan to Nebraska, south to Texas, and east to Tennessee, with a population in Canada, in Pelee, Ontario. It is sometimes referred to as the Texas salamander, porphyry salamander, or the narrow-mouthed salamander. The Kelley's Island salamander (Ambystoma nothagenes) was synonymized with A. texanum in 1995.

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Ambystoma texanum ( Basque )

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Ambystoma texanum Ambystoma generoko animalia da. Anfibioen barruko Ambystomatidae familian sailkatuta dago, Caudata ordenan.

Erreferentziak

Ikus, gainera

Kanpo estekak

(RLQ=window.RLQ||[]).push(function(){mw.log.warn("Gadget "ErrefAurrebista" was not loaded. Please migrate it to use ResourceLoader. See u003Chttps://eu.wikipedia.org/wiki/Berezi:Gadgetaku003E.");});
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Ambystoma texanum: Brief Summary ( Basque )

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Ambystoma texanum Ambystoma generoko animalia da. Anfibioen barruko Ambystomatidae familian sailkatuta dago, Caudata ordenan.

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Salamandre à nez court ( French )

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Ambystoma texanum

Ambystoma texanum, la Salamandre à nez court, , est une espèce d'urodèles de la famille des Ambystomatidae[1].

Répartition

Cette espèce se rencontre[1] :

Description

la femelle est bleu-gris et le mâle est noir avec des taches grises. Elles mesurent environ 15 cm.

Taxinomie

Ambystoma nothagenes[2] est un hybride Ambystoma laterale x Ambystoma texanum[3].

Publication originale

  • Matthes, 1855 : Die Hemibatrachier im Allgemeinen und die Hemibatrachier von Nord-Amerika im Speciellen. Allgemeine Deutsche Naturhistorische Zeitung, Neue Serie, vol. 1, p. 249-280 (texte intégral).

Notes et références

  1. a et b Amphibian Species of the World, consulté lors d'une mise à jour du lien externe
  2. Kraus, 1985 : A new unisexual salamander from Ohio. Occasional Papers of the Museum of Zoology, University of Michigan, vol. 709, p. 1-24 (texte intégral).
  3. Lowcock, Licht & Bogart, 1987 : Nomenclature in hybrid complexes of Ambystoma (Urodela: Ambystomatidae): no case for the erection of hybrid “species”. Systematic Zoology, vol. 36, p. 328–336.
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Salamandre à nez court: Brief Summary ( French )

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Ambystoma texanum

Ambystoma texanum, la Salamandre à nez court, , est une espèce d'urodèles de la famille des Ambystomatidae.

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Kleinbeksalamander ( Dutch; Flemish )

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Herpetologie

De kleinbeksalamander[2] (Ambystoma texanum) is een salamander uit de familie molsalamanders (Ambystomatidae). De soort werd voor het eerst wetenschappelijk beschreven door Benno Matthes in 1855. Oorspronkelijk werd de wetenschappelijke naam Salamandra texana gebruikt.[3]

Uiterlijke kenmerken

Deze salamander heeft in vergelijking met verwante soorten een relatief kleine kop en kleinere mondopening. De lichaamslengte varieert van tien tot veertien centimeter, sommige exemplaren kunnen bijna achttien cm lang worden. De lichaamskleur is donkergrijs met lichtere vlekjes. De buikzijde is lichter tot wit.

Verspreiding en leefgebied

De kleinbeksalamander komt voor delen van Noord-Amerika en leeft endemisch in de Verenigde Staten.[4] De salamander komt voor in het zuiden van Michigan, zuidwestelijk Ontario (Pelee Island), Ohio, westelijk West Virginia, westelijk Kentucky, centraal Tennessee en Alabama, west tot zuidelijk Iowa, oostelijk Kansas en oostelijk Texas, zuidelijk naar de Golfkust.

Referenties
  1. (en) Kleinbeksalamander op de IUCN Red List of Threatened Species.
  2. Grzimek, Bernhard, Het leven der dieren deel V:Vissen (II) en amfibieën, Kindler Verlag AG, 1971, Pagina 368. ISBN 90 274 8625 5.
  3. Darrel R. Frost - Amphibian Species of the World: an online reference - Version 6.0 - American Museum of Natural History, Ambystoma texanum.
  4. University of California - AmphibiaWeb, Ambystoma texanum.
Bronnen
  • (en) - Darrel R. Frost - Amphibian Species of the World: an online reference - Version 6.0 - American Museum of Natural History - Ambystoma texanum - Website Geconsulteerd 26 februari 2017
  • (en) - University of California - AmphibiaWeb - Ambystoma texanum - Website
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Kleinbeksalamander: Brief Summary ( Dutch; Flemish )

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De kleinbeksalamander (Ambystoma texanum) is een salamander uit de familie molsalamanders (Ambystomatidae). De soort werd voor het eerst wetenschappelijk beschreven door Benno Matthes in 1855. Oorspronkelijk werd de wetenschappelijke naam Salamandra texana gebruikt.

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Ambystoma texanum ( Portuguese )

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Ambystoma texanum é uma espécie de anfíbio caudado pertencente à família Ambystomatidae.

Pode ser encontrada no Canadá e nos Estados Unidos.[2]

Sinonímia

  • Salamandra texana Matthes, 1855
  • Amblystoma microstomum Cope, 1861
  • Chondrotus microstomus Cope, 1887
  • Ambystoma schmidti Taylor, 1939
  • Linguaelapsus schmidti Freytag, 1959
  • Linguaelapsus texanus Freytag, 1959
  • Ambystoma nothagenes Kraus, 1985

Referências

  1. IUCN SSC Amphibian Specialist Group (2015). «Ambystoma texanum». Lista Vermelha de Espécies Ameaçadas. 2015: e.T59071A56561668. doi:. Consultado em 12 de novembro de 2021
  2. «Ambystoma texanum» (em inglês). ITIS (www.itis.gov)

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Ambystoma texanum: Brief Summary ( Portuguese )

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Ambystoma texanum é uma espécie de anfíbio caudado pertencente à família Ambystomatidae.

Pode ser encontrada no Canadá e nos Estados Unidos.

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Амбістома короткоголова ( Ukrainian )

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Опис

Загальна довжина досягає 11—17,8 см. Голова коротка, широка. Очі опуклі. тулуб масивний та кремезний. Кінцівки сильні з довгими пальцями. Хвіст доволі довгий, який поступово сплощується й звужується.

Забарвлення спини сіро—чорне або чорне. Боки та черево сіруватого кольору, інколи із синюватим відтінком. По основному фону розкидані темні цятки.

Спосіб життя

Воліє до вологих місцин — заплав річок, повалених і гниючих дерева біля водойм і боліт або опалого листя, полюбляє сільськогосподарські угіддя, луки і прерії, іноді трапляється на скелястих схилах. Використовує нори, вириті іншими тваринами, в тому числі річковими раками і дрібними ссавцями. Вечірній дощ іноді спонукає її до виходу на поверхню. Веде нічний спосіб життя, вдень ховаючись в укриттях. Дорослі особини у норах перечікують найспекотніші місяці в році. Веде потайний спосіб життя. Живиться хробаками, молюсками, іншими безхребетними.

Під час сезону розмноження навколо водойм ці амбістоми можуть збиратися невеликими групами. Парування відбувається під водою. Період розмноження триває з січня-лютого до березня-квітня. У неї внутрішнє запліднення, без амплексуса. Самці підштовхують самок, труться об них, а потім відкладають сперматофори у воду (на гілки або листя). Один самець може відкласти до 128 сперматофорів. Самки забирають сперматофори в себе (до 26 сперматофорів від різних самців), а потім відкладають ікру на мілководдя і зазвичай прикріплюють її до водної рослинності.

Самиці відкладають ікру поодиноко або в групах. За рік одна самка може призвести до 300–700 яєць 1,6—2,5 мм в діаметрі, які відкладає в дрібних студенистих масах по 3—30 яєць. Ікринки в окремих мішках, відкладаються самицею в стоячих або нешвидких водоймах, зокрема тимчасові лісові водойми, придорожні канави, болота. Личинки водні, за пропорціями схожі на дорослих особин.

Розповсюдження

Поширена у США: від північно-східного штату Огайо на захід до Міссурі та східної Небраски. Північна межа ареалу — південно-східний Мічиган, південна межа — західний Кентуккі і Теннессі.

Джерела

  • Crother, Brian I., Jeff Boundy, Jonathan A. Campbell, et al. / Moriarty, John J., ed. (2000) Scientific and Standard English Names of Amphibians and Reptiles of North America North of Mexico, with Comments Regarding Confidence in Our Understanding, Herpetological Circular, no. 29
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Короткоголовая амбистома ( Russian )

provided by wikipedia русскую Википедию
Smallmouth Salamander (Ambystoma texanum) - Flickr - GregTheBusker.jpg

Во время сезона размножения вокруг водоёмов могут собираться небольшими группами. Спаривание происходит под водой. Период размножения длится с января-февраля до марта-апреля. Оплодотворение внутреннее, без амплексуса. Самцы подталкивают самок, трутся о них, а затем откладывают сперматофоры в воду (на ветки или листья). Один самец может отложить до 128 сперматофоров. Самки забирают сперматофоры в себя (до 26 сперматофоров от разных самцов), а затем откладывают икру на мелководье и обычно прикрепляют её к водной растительности[5].

Самки откладывают икру одиночно или в группах. За год одна самка может отложить до 300—700 яиц размером 1,6—2,5 мм в диаметре, которые откладывает в мелких студенистих массах по 3-30 яиц. Икринки в отдельных мешках, откладываются самкой в стоячих или слабо текущих водоёмах, в частности: во временные лесные водоёмы, придорожные канавы, болота. Личинки водные, по пропорциям похожи на взрослых особей[6].

Примечания

  1. 1 2 3 Frost, Darrel R. Ambystoma texanum (неопр.). Amphibian Species of the World: an Online Reference. Version 6.0. American Museum of Natural History (2017).
  2. 1 2 Ананьева Н. Б., Боркин Л. Я., Даревский И. С., Орлов Н. Л. Пятиязычный словарь названий животных. Амфибии и рептилии. Латинский, русский, английский, немецкий, французский. / под общей редакцией акад. В. Е. Соколова. — М.: Рус. яз., 1988. — С. 19. — 10 500 экз.ISBN 5-200-00232-X.
  3. Smallmouth Salamander (англ.) информация на сайте «Энциклопедия жизни» (EOL).
  4. Ambystoma texanum (Smallmouth Salamander) (англ.). The IUCN Red List of Threatened Species.
  5. Crother, Brian I., Jeff Boundy, Jonathan A. Campbell, et al. / Moriarty, John J., ed. (2000) Scientific and Standard English Names of Amphibians and Reptiles of North America North of Mexico, with Comments Regarding Confidence in Our Understanding, Herpetological Circular, no. 29
  6. Amphibia Web. Ambystoma texanum (неопр.). Provides information on amphibian declines, natural history, conservation, and taxonomy (2017).
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Короткоголовая амбистома: Brief Summary ( Russian )

provided by wikipedia русскую Википедию
Smallmouth Salamander (Ambystoma texanum) - Flickr - GregTheBusker.jpg

Во время сезона размножения вокруг водоёмов могут собираться небольшими группами. Спаривание происходит под водой. Период размножения длится с января-февраля до марта-апреля. Оплодотворение внутреннее, без амплексуса. Самцы подталкивают самок, трутся о них, а затем откладывают сперматофоры в воду (на ветки или листья). Один самец может отложить до 128 сперматофоров. Самки забирают сперматофоры в себя (до 26 сперматофоров от разных самцов), а затем откладывают икру на мелководье и обычно прикрепляют её к водной растительности.

Самки откладывают икру одиночно или в группах. За год одна самка может отложить до 300—700 яиц размером 1,6—2,5 мм в диаметре, которые откладывает в мелких студенистих массах по 3-30 яиц. Икринки в отдельных мешках, откладываются самкой в стоячих или слабо текущих водоёмах, в частности: во временные лесные водоёмы, придорожные канавы, болота. Личинки водные, по пропорциям похожи на взрослых особей.

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