Description
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Acris gryllus gryllus has a small body about 1.6-3.2cm long, a tapered snout, and anal warts. The head is pointed and has a dark triangle between the eyes (Behler 1979). A light bar extends from the eye to the forelimb. The thigh is marked by a clean, dark stripe surrounded by distinct light stripes. The other subspecies Acris gryllus dorsalis is similar in size and appearance to A. g. gryllus, except that it has no anal warts and the rear of its thigh is marked by two dark lines. Males have a grayish chest and throat with a round vocal sac. These body areas are usually more spotted in males than females (Stebbins 1954). Acris gryllus can be distinguished from other species of this genus by its longer hind legs and smaller degree of webbing on toes. Specifically, the webbing does not reach the tip of the first toe (Conant and Collins 1991).
Cochran, D. M. (1970). The New Field Book of Reptiles and Amphibians. G. P. Putnam's Sons, New York.
Distribution and Habitat
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A. g. gryllus ranges from southeastern Virginia to the Gulf Coast and the Mississippi River, while A. g. dorsalis ranges from southwestern Georgia to Alabama and the southern tip of Florida. Both are regularly terrestrial and lowland dwelling species, found in ponds, bogs, and river-bottoms. Occasionally found in upland regions such as northern river valleys. They favor grassy regions because vegetation offers protection (Conant and Collins 1991). Acris gryllus is not an able climber and therefore usually escapes danger by hopping around, leaping onto floating vegetation, or diving quickly to the bottom of a pond. It is a hardy frog and abundant wherever it is found (Cochran 1970).
Life History, Abundance, Activity, and Special Behaviors
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Acris gryllus is diurnal. It is especially active when startled. As a strong jumper, it can jump up to 2-3 feet high, covering a horizontal length of 3-4 feet. Diet consists of flying insects. Vocal call is a rapid succession of metallic "gick gick gick's" like a rattle. Calls begin at a duration of 1 second intervals but begin to accelerate to a maximum of about 6 calls per second. The clicking of two pebbles can induce Acris gryllus to call. A. g. gryllus breeds from February to October, depending on rainfall, while A. g. dorsalis can breed during any month. Breeding occurs in the water. Females lay eggs one by one and attach them to the rocks and the vegetation of pond bottoms. Eggs are dark brown or black with a tan colored bottom. Tadpoles develop to be 1/2 inch long after about 7-13 weeks. At this point, they are deep-bodied with a lower labium, indentations of a mouth, eyes, and an anus. They are distinguished by a distinct black tipped tail (Behler 1979).
Trophic Strategy
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A. gryllus is an insectivore, feeding on a wide variety of insects with a major part of their diet being mosquitoes. When in the tadpole stage, however, this species is a herbivore. As adults, to catch their prey, they sit and wait in ambush for insects. When a prey item comes near, they lunge forward and shoot out their tongue. The southern cricket frog has also been observed chasing after their prey on the ground.
Animal Foods: insects; terrestrial non-insect arthropods
Primary Diet: carnivore (Insectivore , Eats non-insect arthropods)
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Associations
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To protect itself from predators, the southern cricket frog is able to jump long distances of up to 8 feet and has the ability to camouflage itself either in the vegetation or water. The predators of A. gryllus are fish, large salamanders (such as Ambystoma tigrinum), snakes (such as Thamnophis sirtalis), turtles and wading birds.
Known Predators:
- fish (Actinopterygii)
- wading birds (Aves)
- salamanders (Caudata)
- turtles (Testudines)
- snakes (Serpentes)
Anti-predator Adaptations: cryptic
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Morphology
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This small frog can be found in several colors. Generally they range from black, brown, or reddish brown to bright green or gray. Along with these patterns of coloration is a stripe of contrasting color beginning anteriorly at the top of the snout and running along the back towards the posterior and ends at the urostyle. Between the eyes of A. gryllus, there is a triangle marking with two corners at each respective eye and the third corner connected to the stripe seen on the back. When compared to a similar species, the northen cricket frog, A. gryllus is found to be smaller and more slender. The snout is markedly more pointed, the legs are longer and more proportional to the size of the body, and there is less webbing between the toes. The first toe is partially free of webbing and 3 joints of the fourth toe are completely free. Warts appear on the skin, especially around the anal area, but are not as prominent as seen in the northern cricket frog. In addition to the stripe running down the back of A. gryllus, there is also a darker longitudinal stripe that can be seen on the rear of the thigh. There is slight sexual dimorphism seen with the southern cricket frogs. The females are generally the slightly larger sex with a length of 16-33 mm and the males achieve a length of 15-29 mm. The males have darker throats, whereas the females' throats are white. Males also have a single subgular sac. When young, the frogs are entirely aquatic tadpoles. Upon reaching adulthood, the recently changed frogs are roughly 14 mm.
Range length: 15 to 33 mm.
Other Physical Features: ectothermic ; heterothermic ; bilateral symmetry
Sexual Dimorphism: female larger; sexes colored or patterned differently; male more colorful
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Life Expectancy
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The average lifespan of frogs in the genus Acris is roughly four months. This is because many die as tadpoles. Those few that do survive to adulthood may live for a least a year.
Average lifespan
Status: wild: 4 months.
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Habitat
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Although A. gryllus is a member of the tree frog family, it lives mostly on the ground or in freshwater areas with sunlight. Examples of prime habitat include shallow ponds with vegetation, meadows, creeks, marshes and coastal plain bogs. The southern cricket frog can also be found in roadside pools and ditches. In these areas, they can become quite abundant. Its main choices of habitation changes, however, when the southern cricket frog's range overlaps with that of Acris crepitans. When this occurs, A. gryllus will typically move to areas which have been drained of water. The population of A. gryllus becomes less active and enters a period of dormancy near the middle of December, and reanimates in mid-February.
Range elevation: 500 to 1000 m.
Habitat Regions: temperate ; terrestrial ; freshwater
Terrestrial Biomes: forest
Aquatic Biomes: lakes and ponds; rivers and streams; temporary pools
Wetlands: marsh ; swamp ; bog
Other Habitat Features: agricultural
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Distribution
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Acris gryllus lives in the temperate climate of the southeastern portion of the United States. The range of this species, also known as the southern cricket frog, extends from the southeastern corner of Virginia and spans through North and South Carolina, Georgia, Alabama, and Mississippi. A. gryllus has also been reported in the southwestern tip of Tennessee. All throughout these states, A. gryllus has been found in the areas with an elevation of 500-1000 m away from the coastline.
Biogeographic Regions: nearctic (Native )
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Associations
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A. gryllus is an insectivore which consumes a variety of insects, some of which are harmful to crops. The southern cricket frog, in turn, is preyed upon by a plethora of different fish, salamanders, turtles, and snakes.
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Benefits
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The southern cricket frog consumes pest insects and some which may potentially harm crops.
Positive Impacts: controls pest population
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- Shanna Williams, University of Michigan-Ann Arbor
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Benefits
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There are no known adverse affects of A. gryllus on humans.
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Life Cycle
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The eggs of the southern cricket frog are fertilized externally while in a freshwater habitat. The sperm enters the egg and soon a gelatinous cover envelopes the egg to protect it. It then develops into a gill-breathing larva, also known as a tadpole, which then metamorphoses into the mature, lung- breathing adult. From beginning to end, 90-100 days (on average) are needed to complete the metamorphosis.
Development - Life Cycle: metamorphosis
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Conservation Status
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At present time, A. gryllus is not threatened.
US Federal List: no special status
CITES: no special status
IUCN Red List of Threatened Species: least concern
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Sem título
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- Shanna Williams, University of Michigan-Ann Arbor
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- Phil Myers, Museum of Zoology, University of Michigan-Ann Arbor
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Behavior
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The call of A. gryllus sounds like a rapid "click-click-click", as if two small stones or marbles were being hit against each other. The rhythm of the call always remains the same- it never changes pitch or frequency. It is also a very fast constant chirp with one call per second. These calls can be heard in most weather and at any time of the day. A. gryllus males use this chirping for two main things: to attract females for mating purposes and to maintain inter-male spacing.
Communication Channels: acoustic
Other Communication Modes: choruses
Perception Channels: visual ; tactile ; acoustic ; vibrations ; chemical
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Reproduction
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The process of mating starts with the male emitting a call to attract females. This also functions to let the other males of A. gryllus know to stay out of his territory. The female then chooses her mate who begins what is known as amplexing. This is a method of holding the female around her waist with his forelegs, which then stimulates hormones within the female. Because of this stimulation, the eggs are then released into the water and the male releases his sperm and thus fertilizes the eggs.
Mating System: polygynous
Although the male will call all year long, breeding is usually done in the months of February through October. Once the eggs are fertilized the female will lay the eggs either singly or in groups of 7-10. She will lay clumps of up to 150 eggs at one time and attach them to either to the vegetation beneath the water or along the bottom of shallow pond. Depending on the environmental factors, the eggs can hatch in four days. Then, within the 90-100 days it takes to complete metamorphosis, the tail disappears, the legs form, the mouth enlarges, and the lungs replace the gills.
Breeding interval: Generally, southern cricket frogs breed around 2 to 3 times a year.
Breeding season: February through October
Range number of offspring: 150 (high) .
Range time to independence: 4 (low) days.
Range age at sexual or reproductive maturity (female): 90 to 100 days.
Range age at sexual or reproductive maturity (male): 90 to 100 days.
Key Reproductive Features: seasonal breeding ; gonochoric/gonochoristic/dioecious (sexes separate); sexual ; fertilization (External ); oviparous ; sperm-storing
No parental care is given.
Parental Investment: no parental involvement
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Acris gryllus
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Catalão; Valenciano
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fornecido por wikipedia CA
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Acris gryllus: Brief Summary
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Acris gryllus és una espècie de granota de la família Hylidae, autòctona del sud-est dels Estats Units i molt similar a Acris crepitans.
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Southern cricket frog
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The southern cricket frog or southeastern cricket frog (Acris gryllus) is a small hylid frog native to the Southeastern United States.[2] It is very similar in appearance and habits to the northern cricket frog, Acris crepitans, and was considered formerly conspecific (Dickerson 1906). The scientific name Acris is from the Greek word for locust, and the species name gryllus is Latin for cricket (Georgia Wildlife).
Description
At 0.75–1.5 inches (16–32 mm) in length, Acris gryllus is even smaller than A. crepitans. Other characters that differentiate the southern species are:
- More pointed snout--A. crepitans more blunt.
- Hind leg is more than half length of the body when folded—that of A. crepitans is less than one half body length. When rear leg is extended forward, the heel of A. gryllus usually reaches beyond the snout—does not reach snout in A. crepitans.
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A. gryllus can jump longer distances than A. crepitans.
-
A. gryllus has a sharply-defined black stripe on the back of the thigh--A. crepitans has a ragged stripe.
- Webbing on rear feet of A. gryllus is sparse, more extensive in A. crepitans.
Range and habitat
The southern cricket frog is characteristic of coastal plain bogs, bottomland swamps, ponds, and ditches. It prefers sunny areas, and is usually not found in woodlands. Subspecies Acris gryllus gryllus is found in the Atlantic Coastal Plain from southeastern Virginia through the Carolinas, Georgia, Alabama, and Mississippi, west to the Mississippi River. It is found mostly east of the Fall Line, but extends into more upland areas of the Piedmont along river valleys. Subspecies Acris gryllus dorsalis is found throughout the Florida peninsula.
Habits
The southern cricket frog feeds on insects, spiders, and other arthropods. It is active throughout the year in warm weather.
Reproduction
Male calling and entering amplexus
Breeding is in late spring and summer. The advertisement call of the males is a loud rapid gick, gick, gick. Up to 150 eggs are laid at a time, and more than one mass may be produced in a season (Martof et al. 1980).
Subspecies
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Acris gryllus dorsalis (Harlan, 1827) – Florida cricket frog
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Acris gryllus gryllus (LeConte, 1825) – Coastal plain cricket frog, southern cricket frog
References
- Conant, Roger, et al. (1998). A Field Guide to Reptiles and Amphibians of Eastern and Central North America. Boston: Houghton Mifflin. ISBN 0-395-90452-8.
- Dickerson, Mary C. (1906). The Frog Book. New York: Doubleday, Page, and Company.
- Georgia Museum of Natural History. Georgia Wildlife—accessed 15 May 2006
- Martof, Bernard S., et al. (1980). Amphibians and Reptiles of the Carolinas and Virginia. Chapel Hill: University of North Carolina Press. ISBN 0-8078-4252-4.
- Myers, P., et al. The Animal Diversity Web—accessed 15 May 2006
- United States Department of Agriculture, Integrated Taxonomic Information System (ITIS)—accessed 15 May 2006
-
United States Geological Survey (USGS), Southeast Ecological Science Center—accessed 15 May 2006
- "Acris gryllus". Integrated Taxonomic Information System. Retrieved 23 February 2009.
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Southern cricket frog: Brief Summary
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The southern cricket frog or southeastern cricket frog (Acris gryllus) is a small hylid frog native to the Southeastern United States. It is very similar in appearance and habits to the northern cricket frog, Acris crepitans, and was considered formerly conspecific (Dickerson 1906). The scientific name Acris is from the Greek word for locust, and the species name gryllus is Latin for cricket (Georgia Wildlife).
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Acris gryllus
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Espanhol; Castelhano
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fornecido por wikipedia ES
Acris gryllus es una especie de anfibios de la familia Hylidae. Es endémica del sur de los Estados Unidos.
Subespecies
-
Acris gryllus dorsalis (Harlan, 1827)
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Acris gryllus gryllus (LeConte, 1825)
Referencias
- Hammerson, G. (2004). «Acris gryllus». Lista Roja de especies amenazadas de la UICN 2008 (en inglés). ISSN 2307-8235. Consultado el 23 de febrero de 2009.
- Conant, Roger, et al. (1998). A Field Guide to Reptiles y Amphibians of Eastern y Central North America. Boston: Houghton Mifflin. ISBN 0-395-90452-8.
- Dickerson, Mary C. (1906). The Frog Book. New York: Doubleday, Page y Company.
- Georgia Museum of Natural History. Georgia Wildlife
- Martof, Bernard S., et al. (1980). Amphibians y Reptiles of the Carolinas y Virginia. Chapel Hill: University of North Carolina Press. ISBN 0-8078-4252-4.
- Myers, P., et al. The Animal Diversity Web
- United States Department of Agriculture, Integrated Taxonomic Information System (ITIS)
-
United States Geological Survey (USGS), Florida Integrated Science Center
- Sistema Integrado de Información Taxonómica. «Acris gryllus (TSN 173518)» (en inglés).
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Acris gryllus: Brief Summary
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fornecido por wikipedia ES
Acris gryllus es una especie de anfibios de la familia Hylidae. Es endémica del sur de los Estados Unidos.
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Acris gryllus
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Basco
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fornecido por wikipedia EU
(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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Acris gryllus: Brief Summary
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Basco
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fornecido por wikipedia EU
Acris gryllus Acris generoko animalia da. Anfibioen barruko Hylidae familian sailkatuta dago, Anura ordenan.
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Acris gryllus
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Francês
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fornecido por wikipedia FR
Acris gryllus est une espèce d'amphibiens de la famille des Hylidae[1].
Répartition
Aire de répartition de l'espèce
Acris gryllus selon l'
UICN (consulté le 10 février 2013).
Cette espèce est endémique de l'Est du Mississippi aux États-Unis[1],[2]. Elle se rencontre dans le sud de l'Ohio en Floride, en Géorgie, en Alabama, au Mississippi, en Louisiane, au Tennessee, au Kentucky, en Caroline du Sud, en Caroline du Nord, en Virginie, en Virginie-Occidentale, en Pennsylvanie, au Delaware, au Maryland, au New Jersey et dans l'État de New York.
Description
Acris gryllus[3] mesure de 15 à 29 mm pour les mâles et de 16 à 33 mm pour les femelles[3].
Taxinomie
Hyla ocularis Bosc & Daudin, 1801[4] est considéré comme un synonyme sénior de Acris gryllus par Mittleman en 1946[5]. Neill en 1950[6] puis Fouquette et Dubois en 2014[7] le considère comme un ensemble non identifiable. Il est considéré comme un synonyme de Acris gryllus par commodité[1].
Publication originale
- LeConte, 1825 : Remarks on the American species of the Genera Hyla and Rana. Annals of the Lyceum of Natural History of New-York, vol. 1, p. 278–282 (texte intégral).
Notes et références
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↑ a b et c Amphibian Species of the World, consulté lors d'une mise à jour du lien externe
-
↑ UICN, consulté lors d'une mise à jour du lien externe
-
↑ a et b AmphibiaWeb. University of California, Berkeley, CA, USA, consulté lors d'une mise à jour du lien externe
-
↑ Sonnini de Manoncourt & Latreille, 1801 : Histoire naturelle des reptiles : avec figures dessinées d'apres nature, vol. 2, p. 1–332 (texte intégral).
-
↑ Mittleman, 1946 : Nomenclatural notes on two southeastern frogs. Herpetologica, vol. 3, no 2, p. 57–60.
-
↑ Neill, 1950 : Taxonomy, nomenclature, and distribution of southeastern Cricket frogs, genus Acris. American Midland Naturalist, vol. 43, p. 152–156.
-
↑ Fouquette & Dubois, 2014 : A Checklist of North American Amphibians and Reptiles. Seventh Edition, vol. 1, Amphibians, p. 1-586.
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Acris gryllus: Brief Summary
(
Francês
)
fornecido por wikipedia FR
Acris gryllus est une espèce d'amphibiens de la famille des Hylidae.
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Acris gryllus
(
Italiano
)
fornecido por wikipedia IT
Acris gryllus (LeConte, 1825)[2] è un anfibio della famiglia Hylidae, sottofamiglia Acridinae, endemica del sud-est degli Stati Uniti d'America.[3] In inglese le rane di questa specie sono comunemente denominate Southern cricket frog. Sia il nome scientifico sia il nome comune si riferiscono al caratteristico verso, che assomiglia a quello di un grillo.
Descrizione
Con una lunghezza di 16–32 mm, Acris gryllus è la specie più piccola del genere, anche di A. crepitans. Altri caratteri che differenziano questa specie meridionale dalle altre specie del genere Acris sono:
- il muso è più appuntito (A. crepitans ha il muso più smussato).
- le zampe posteriori sono più lunghe della metà del corpo quando sono piegate (quelle di A. crepitans misurano meno di metà corpo). Quando le zampe posteriori sono estese in avanti, il tallone di A. gryllus solitamente sopravanza il muso (in A. crepitans il tallone non raggiunge il muso).
-
A. gryllus può saltare a distanze maggiori di A. crepitans.
-
A. gryllus possiede una striscia nera nettamente definita sul retro della coscia (A. crepitans ha una striscia irregolare).
- la tessitura sulle zampe posteriori di A. gryllus è rada, più estesa in A. crepitans.
Biologia
Acris gryllus si nutre di insetti, ragni e altri artropodi. È attiva durante tutto l'anno con tempo caldo.
Riproduzione
La riproduzione avviene nella tarda primavera e in estate. Il richiamo dei maschi è un forte e rapido gick, gick, gick. Le femmine depongono fino a 150 uova alla volta e in una stagione può avvenire più di una deposizione[4].
Distribuzione e habitat
Areale della specie
A. gryllus
La specie è endemica del sud-est degli Stati Uniti d'America. Popola lagune costiere, paludi di pianura, stagni e fossati. Predilige le aree soleggiate e solitamente non è rinvenibile nelle aree boschive.
La sottospecie Acris gryllus gryllus è presente nelle pianure costiere dell'Oceano Atlantico, dalla Virginia sudorientale fino alla Georgia, passando per Carolina del Nord e del Sud, e in Alabama e Mississippi, fino al fiume Mississippi a ovest.
La sottospecie Acris gryllus dorsalis è presente in tutta la penisola della Florida.
Tassonomia
La specie Acris gryllus è suddivisa nelle seguenti sottospecie:
-
Acris gryllus dorsalis (Harlan, 1827)
-
Acris gryllus gryllus (LeConte, 1825)
Note
-
^ (EN) Geoffrey Hammerson 2004, Acris gryllus, su IUCN Red List of Threatened Species, Versione 2020.2, IUCN, 2020.
-
^ LeConte, 1825, Ann. Lyc. Nat. Hist. New York, 1: 282.
-
^ (EN) Frost D.R. et al., Acris gryllus (LeConte, 1825), in Amphibian Species of the World: an Online Reference. Version 6.0, New York, American Museum of Natural History, 2014. URL consultato il 7 ottobre 2014.
-
^ Martof et al. 1980
Bibliografia
- Conant, Roger, et al. (1998). A Field Guide to Reptiles y Amphibians of Eastern y Central North America. Boston: Houghton Mifflin. ISBN 0-395-90452-8.
- Dickerson, Mary C. (1906). The Frog Book. New York: Doubleday, Page y Company.
- Georgia Museum of Natural History. Georgia Wildlife
- Martof, Bernard S., et al. (1980). Amphibians y Reptiles of the Carolinas y Virginia. Chapel Hill: University of North Carolina Press. ISBN 0-8078-4252-4.
- Myers, P., et al. The Animal Diversity Web
- United States Department of Agriculture, Integrated Taxonomic Information System (ITIS)
-
United States Geological Survey (USGS), Florida Integrated Science Center
- Faivovich, J.; Haddad, C.F.B.; Garcia, P.C.A.; Frost, D.R.; Campbell, J.A.; Wheeler, W.C., 2005: «Systematic Review of the Frog Family Hylidae, with Special Reference to Hylinae: Phylogenetic Analysis and Taxonomic Revision». Bulletin of the American Museum of Natural History, Num. 294, pp. 1–240 (disponibile online - URL consultato il 19-03-2012).
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Acris gryllus: Brief Summary
(
Italiano
)
fornecido por wikipedia IT
Acris gryllus (LeConte, 1825) è un anfibio della famiglia Hylidae, sottofamiglia Acridinae, endemica del sud-est degli Stati Uniti d'America. In inglese le rane di questa specie sono comunemente denominate Southern cricket frog. Sia il nome scientifico sia il nome comune si riferiscono al caratteristico verso, che assomiglia a quello di un grillo.
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Zuidelijke krekelkikker
(
Neerlandês; Flamengo
)
fornecido por wikipedia NL
Herpetologie De zuidelijke krekelkikker[2] (Acris gryllus) is een kikker uit de familie boomkikkers (Hylidae).[3] De soort werd voor het eerst wetenschappelijk beschreven door John Lawrence LeConte in 1825. Oorspronkelijk werd de wetenschappelijke naam Rana gryllus gebruikt.
Uiterlijke kenmerken
De lichaamslengte is ongeveer drie centimeter, de kleur is donkergroen met een donkere driehoek tussen de ogen en twee donkere streepachtige vlekken op de flanken, soms alleen enkele onregelmatige vlekken. Ook zijn de achterpoten veel langer en de zwemvliezen kleiner dan bij veel andere soorten boomkikkers. De ondersoort Acris gryllus dorsalis heeft een heldergroene kruis- tot zandloperachtige lijnentekening op de kop en rug. Ondanks dat het een boomkikker is, kan de zuidelijke krekelkikker niet goed klimmen en bevindt zich meestal op de bodem.
Verspreiding en habitat
De soort komt voor in de Verenigde Staten; in de staten Virginia, Georgia, Alabama, de zuidelijke punt van Florida en langs een groot deel van de Mississippirivier.[4] Het biotoop bestaat uit oevers van begroeide wateren zoals rivier-valleien en moerassen en deze soort komt nooit ver uit de buurt van de waterkant. Bij verstoring springen de kikkers in het water en zwemmen naar de bodem waar ze zich enige tijd schuilhouden.
Levenswijze
Het is een nachtactieve soort die voornamelijk insecten eet en tijdens de schemering pas actief wordt. De zuidelijke krekelkikker behoort tot de boomkikkers maar is een bodembewonende soort. Het gekwaak van de mannetjes in de paartijd lijkt enigszins op een metaalachtig geratel, en de paring kan plaatsvinden van februari tot oktober, en hangt samen met de regenval. Meestal begint de paartijd na de eerste grote bui, waarna de kikkers in groten getale tevoorschijn komen. De kikkervisjes komen na ongeveer 12 weken aan land, tot die tijd zijn ze makkelijk te onderscheiden van de larven van andere soorten aan de lichtbruine kleur en de zwarte staartpunt.
- Referenties
- Bronnen
-
(en) - Darrel R. Frost - Amphibian Species of the World: an online reference - Version 6.0 - American Museum of Natural History - Acris gryllus - Website Geconsulteerd 7 december 2016
-
(en) - University of California - AmphibiaWeb - Acris gryllus - Website
-
(en) Animal Diversity Web - Acris gryllus - Website
-
(en) The frogs and toads of Georgia - Southern Cricket Frogs (Acris gryllus) - Website
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Zuidelijke krekelkikker: Brief Summary
(
Neerlandês; Flamengo
)
fornecido por wikipedia NL
Acris gryllus - 1700-1880 - afdruk - Iconographia Zoologica -
Bijzondere Collecties van de Universiteit van Amsterdam De zuidelijke krekelkikker (Acris gryllus) is een kikker uit de familie boomkikkers (Hylidae). De soort werd voor het eerst wetenschappelijk beschreven door John Lawrence LeConte in 1825. Oorspronkelijk werd de wetenschappelijke naam Rana gryllus gebruikt.
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Acris gryllus
(
Português
)
fornecido por wikipedia PT
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Acris gryllus: Brief Summary
(
Português
)
fornecido por wikipedia PT
Acris gryllus é uma espécie de anfíbio anuros da família Hylidae. A espécie é endêmica dos Estados Unidos e ocorre no sudeste do país. Em relação ao risco de extinção, ela é considerada uma espécie pouco preocupante pela Lista Vermelha da UICN.
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Acris gryllus
(
Sueco
)
fornecido por wikipedia SV
Acris gryllus är en groda från USA som tillhör släktet Acris och familjen lövgrodor.
Utseende
En liten, slank groda som är lik sin nära släkting Acris crepitans. Den har svart, grå, klargrön eller brunaktig ovansida med en strimma i klar, kontrasterande färg från nosspets till svansben, en mörk, triangelformad markering på huvudet och en mörk tvärstrimma på låren. Den skiljer sig från A. crepitans genom att den är slankare, har längre ben och spetsigare nos. Bakfötterna har kraftig simhud, men inte så mycket som hos A. crepitans, och huden är vårtig. Hanen, som vanligtvis är mindre än honan, har mörk strupe och en oparig kindpåse. Längden uppgår till 15 – 29 mm hos hanen, 16 – 33 mm hos honan.[2] [3]
Utbredning
Acris gryllus finns i östra och sydöstra USA från sydöstra Virginia till södra Florida, med västgräns i sydöstra Tennessee och sydöstra Louisiana.[1]
Vanor
Arten lever på öppna, oskuggade gräsbevuxna ytor och stränder intill våtmarker som träsk, mossar, sjöar, dammar, diken, bäckar och mera temporära vattensamlingar.[1] Trots att den hör till lövgrodorna är den ingen skicklig klättrare; den hoppar emellertid mycket bra.[2] Troligtvis går individerna i de nordligare delarna av utbredningsområdet i dvala under vintern.[4]
Föda och predation
Arten livnär sig på ett stort antal leddjur, som hoppstjärtar, spindlar, steklar, tvåvingar, skinnbaggar och skalbaggar. Födan kan tas på långt avstånd från de våtmarker i vars närhet arten normalt lever. Själv utgör grodan föda åt andra, större grodarter, ormar, däribland strumpebandssnok och vattensnokar (släktet Nerodia), fiskar och fåglar.[4] Speciellt drabbade är ungarna, där en stor del dödas innan de blir vuxna.[2]
Fortplantning
Parning och larvutveckling sker i en mångfald olika sötvattenssamlingar, både permanenta och tillfälliga.[4] Leken börjar i maj, och kan hålla på fram till hösten.[3] Honan kan lägga upp till 250 ägg i mindre klumpar om 7 till 10. De kan kläckas efter så kort tid som 4 dagar, och ynglen förvandlas efter 50 till 90 dagar.[4] De blir könsmogna efter omkring 3 månader.[2]
Status
Acris crepitans är klassificerad som livskraftig ("LC") av IUCN, och populationen är stabil. God tillgång på våtmarker är emellertid en nödvändig faktor för dess överlevnad, och introduktionen av rovfisk i deras habitat är en potentiell risk.[1]
Referenser
- ^ [a b c d] Acris gryllus IUCN (2004). Auktorer: Geoffrey Hammerson (engelska) Läst 2009-10-29
- ^ [a b c d] Williams, Shanna (2000). ”Acris gryllus” (på engelska). Animal Diversity Web, University of Michigan Museum of Zoology. http://animaldiversity.ummz.umich.edu/site/accounts/information/Acris_gryllus.html. Läst 29 oktober 2009.
- ^ [a b] ”Southern Cricket Frog, Acris gryllus” (på engelska). US Geological Survey. 23 oktober 2009. http://fl.biology.usgs.gov/herps/Frogs_and_Toads/A_gryllus/a_gryllus.html. Läst 29 oktober 2009.
- ^ [a b c d] John B. Jensen (2009). ”Acris gryllus” (på engelska). AmphibiaWeb, University of California. http://www.amphibiaweb.org/cgi-bin/amphib_query?query_src=aw_search_index&table=amphib&special=one_record&where-genus=Acris&where-species=gryllus. Läst 29 oktober 2009.
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Acris gryllus: Brief Summary
(
Sueco
)
fornecido por wikipedia SV
Acris gryllus är en groda från USA som tillhör släktet Acris och familjen lövgrodor.
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Сверчковая квакша
(
Russo
)
fornecido por wikipedia русскую Википедию
Вид: Сверчковая квакша
Международное научное название
Acris gryllus Leconte, 1825
Ареал
Охранный статус Систематика
на ВикивидахИзображения
на Викискладе ITIS 173518NCBI 317301EOL 1039033FW 110845 Сверчковая квакша[1] (лат. Acris gryllus) — относится к семейству квакш, принадлежащих к отряду бесхвостых земноводных. Отличается хорошо развитыми плавательными перепонками между пальцами и мало развитой барабанной перепонкой; длина тела достигает не более 3,5 см; бурого цвета с большими черноватыми пятнами, имеющими светло-зелёный ободок; обладает способностью изменять свой цвет в зависимости от цвета окружающей среды. Живёт в Северной Америке и держится около воды. Название своё получила вследствие сходства своего голоса с трещанием сверчков.
Примечания
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Сверчковая квакша: Brief Summary
(
Russo
)
fornecido por wikipedia русскую Википедию
Сверчковая квакша (лат. Acris gryllus) — относится к семейству квакш, принадлежащих к отряду бесхвостых земноводных. Отличается хорошо развитыми плавательными перепонками между пальцами и мало развитой барабанной перепонкой; длина тела достигает не более 3,5 см; бурого цвета с большими черноватыми пятнами, имеющими светло-зелёный ободок; обладает способностью изменять свой цвет в зависимости от цвета окружающей среды. Живёт в Северной Америке и держится около воды. Название своё получила вследствие сходства своего голоса с трещанием сверчков.
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蟋蟀雨蛙
(
Chinês
)
fornecido por wikipedia 中文维基百科
蟋蟀雨蛙: Brief Summary
(
Chinês
)
fornecido por wikipedia 中文维基百科
蟋蟀雨蛙(Acris gryllus)是美國東南部一種細小的樹蟾。牠們的外觀及習性與北蝗蛙很相近,以往一直被認為是同一物種。其種小名是拉丁文蟋蟀的意思。