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Magdalena Giant Glass Frog

Ikakogi tayrona (Ruiz-Carranza & Lynch 1991)

Description

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Ikakogi tayrona can be identified by the following combination of characters: 1) vomerine dentition absent, 2) bones white in life, 3) color in life green to pale green, 4) snout rounded when viewed dorsally, sloped and truncated when viewed laterally, 5) skin is dorsally granular, 6) ulnar and tarsal folds small, 7) males have a large humeral spine. Adult females reach 28.2-30.8mm SVL, males reach 28.2-30.6mm SVL. Head as wide as body, but wider than long (head width 34.8-38.7 % SVL). Nostril-eye distance is 52.8-83.9 % eye width. Nostrils protuberant and oriented anterolaterally. Eyes not visible around border of snout when viewed ventrally. Supratympanic fold thick and very well defined. Vomerine dentition absent. Length of tibia is 51.9-58.6 % SVL.

References

  • Duellman, W.E. (1979). ''The herpetofauna of the Andes: patterns of distribution, origin, differentiation, and present communities.'' The South American Herpetofauna: Its Origin, Evolution, and Dispersal. W.E. Duellman, eds., Monographs of the Museum of Natural History, University of Kansas, 7: 371-459.
  • Lynch, J.D. (1981). ''The idnetity of Hylopsis platychephala Werner, a centrolenid frog from northern Colombia.'' Journal of Herpetology, (15), 283-291.
  • McDiarmid, R.W. and Savage, J.M. (1984). ''Taxonomic status of the frog genus Centrolenella Noble (Anura: Centrolenidae).'' Journal of Herpetology, (18), 213-215.
  • Valencia, LB and Delia, J (2016). ''Maternal care in a glassfrog: care function and commitment to offspring in Ikakogi tayrona.'' Behavioral Ecology and Sociobiology, 70(1), 41-48.
  • Werner, F. (1894). ''Über einige Novitäten der herpetologischen sammlung des Wiener zool. vergl. anatom. Institut Zool. .'' Anzieger, (17), 155-157.

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Raul E. Diaz
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Distribution and Habitat

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It is known only from the northern part of the Sierra Nevada de Santa Marta, department of Magdalena, county of Santa Marta in Colombia at altitudes from 980-1790 m. It was collected on vegetation approximately 2-3m above the ground bordering breaks in the forest.
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Life History, Abundance, Activity, and Special Behaviors

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In 2016, Valencia and Delia (2016) reported parental care in Ikakogi tayrona, the geographically (Sierra Nevada de Santa Marta, Colombia) and phylogenetically isolated sister-taxon of all other centrolenids. Unexpectedly, the parental care is by females. Care functions are similar in both males and females, but females are somewhat more risk-tolerant, probably reflecting the more direct link to fitness in females.
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Ikakogi tayrona

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Ikakogi tayrona, or the Magdalena giant glass frog, is a species of frog in the family Centrolenidae.[2][3][4] It is endemic to the Sierra Nevada de Santa Marta, Magdalena Department, Colombia.[1][2][3] It is the only glass frog that is known to show maternal care (in other glass frogs parental care is provided by males, if at all).[5]

Description

Males measure 28.2–30.6 mm (1.11–1.20 in) and females 28.2–30.8 mm (1.11–1.21 in) in snout–vent length. The head is large and wide with snout that is rounded when viewed dorsally but sloped and truncated when viewed laterally. The color is green to pale green, and dorsal skin is granular. The males have a large humeral spine.[4]

Reproduction

Ikakogi tayrona breed on vegetation alongside streams. Males call from the same or nearby leaves, night after night, sometimes engaging in male-male combats. Oviposition takes place on the same leaves where males have been calling some 0.5–2 m (1 ft 8 in – 6 ft 7 in) above the ground (higher oviposition sites are possible but difficult to observe). Only the females have been observed to attend egg clutches. Attendance is nearly continuous during the night, whereas during the day the female may temporarily leave the clutch. Experimental removal of attending females greatly increased mortality of the eggs.[5]

Habitat and conservation

Its natural habitats are sub-Andean forests and cloud forests where it occurs on vegetation near water.[1] The elevational range is 700–2,400 m (2,300–7,900 ft) above sea level.[3] Part of the range is protected within the Sierra Nevada de Santa Marta National Natural Park and in the El Dorado Nature Reserve by Fundación ProAves. Outside the protected areas, it is threatened by habitat loss. Also pollution of water and fumigation of crops are threats.[1]

See also

References

  1. ^ a b c d IUCN SSC Amphibian Specialist Group (2017). "Ikakogi tayrona". IUCN Red List of Threatened Species. 2017: e.T54941A85879089. doi:10.2305/IUCN.UK.2017-2.RLTS.T54941A85879089.en. Retrieved 14 November 2021.
  2. ^ a b Frost, Darrel R. (2016). "Ikakogi tayrona (Ruiz-Carranza and Lynch, 1991)". Amphibian Species of the World: an Online Reference. Version 6.0. American Museum of Natural History. Retrieved 26 January 2016.
  3. ^ a b c Acosta Galvis, A. R. (2019). "Ikakogi tayrona (Ruiz & Lynch, 1991)". Lista de los Anfibios de Colombia: Referencia en linea V.09.2019. Archived from the original on 6 November 2019. Retrieved 6 November 2019.
  4. ^ a b "Ikakogi tayrona". AmphibiaWeb: Information on amphibian biology and conservation. [web application]. Berkeley, California: AmphibiaWeb. 2016. Retrieved 26 January 2016.
  5. ^ a b Valencia, Laura Bravo & Delia, Jesse (2015). "Maternal care in a glassfrog: care function and commitment to offspring in Ikakogi tayrona". Behavioral Ecology and Sociobiology. 70 (1): 41–48. doi:10.1007/s00265-015-2022-x. S2CID 18965782.
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Ikakogi tayrona: Brief Summary

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Ikakogi tayrona, or the Magdalena giant glass frog, is a species of frog in the family Centrolenidae. It is endemic to the Sierra Nevada de Santa Marta, Magdalena Department, Colombia. It is the only glass frog that is known to show maternal care (in other glass frogs parental care is provided by males, if at all).

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