Dotted Reed Frog

Hyperolius guttulatus és una espècie de granota que viu al Camerun, Costa d'Ivori, Gabon, Ghana, Guinea, Libèria, Nigèria, Sierra Leona i, possiblement també, a Guinea Equatorial.

Es troba amenaçada d'extinció per la pèrdua del seu hàbitat natural.

Referències

• Schiøtz, A., Rödel, M.-O., Amiet, J.-L. & Burger, M. 2004. Hyperolius guttulatus. 2006 IUCN Red List of Threatened Species. Accedit a data 15 d'abril del 2008.

Hyperolius guttulatus is a species of frog in the family Hyperoliidae.^{[1][2][3][4][5]} It occurs in West and Middle Africa between Sierra Leone in the west and Gabon in the east/south.^[1][2] Common name dotted reed frog has been coined for this species.^[2][3]

Distribution

The species is found, from west to east, in Sierra Leone, Guinea, Liberia, Ivory Coast, Ghana, Togo, Nigeria, Cameroon, and western Gabon.^[1][2][5] It probably occurs in mainland Equatorial Guinea, whereas the gap in Benin might be real.^[1]

Description

Hyperolius guttulatus is a relatively large member of its genus, with males measuring 27–35 mm (1.1–1.4 in) and females 29–37 mm (1.1–1.5 in) in snout–vent length. The body is broad and flat and there is a conspicuous dark canthal stripe. The pupil is horizontal. Males have a large gular flap. There are two colour phases:

• All juveniles and many mature males display phase "J". In this phase, the dorsum is dull bluish to yellowish green; ventral surfaces are greenish yellow. There is a light stripe above the dark canthal stripe. There might also be some diffuse, dark spots, and the dorsolateral line might be bordered with black.
• All females, and some males, develop into phase "F" prior to the first breeding season. The dorsum is dark brown to reddish and has round or oblong orange spots; the ventrum is greyish white. There is variation within this phase; sometimes the light spots are large, sometimes they are very small and numerous. In some Cameroonian specimens the dorsum is uniform brown to reddish and there are black dots on the sides and ventrum.^[3][4]

Male advertisement call is a rapid succession of pure, low-pitched notes that have a soft tonal quality.^[3][4]

Habitat and conservation

Hyperolius guttulatus lives in and around large swamps in secondary habitats in the forest belt; in West Africa it typically occurs in the forest-savanna transition forest. It is not found in undisturbed forest. Breeding takes place very large, mostly permanent ponds.^[1] Males call from bushes several metres above the ground.^[3][4]

The distribution of this species is very patchy, but it can be locally very abundant. It is threatened by habitat loss, especially when affecting its breeding sites. It occurs in a number of protected areas,^[1] including the Ankasa Conservation Area and Kakum National Park in Ghana.^[5]

References

Hyperolius guttulatus es una especie de anfibios de la familia Hyperoliidae. Habita en Camerún, Costa de Marfil, Gabón, Ghana, Guinea, Liberia, Nigeria, Sierra Leona y posiblemente Guinea Ecuatorial. Su hábitat natural incluye bosques tropicales o subtropicales secos y a baja altitud, sabanas secas, pantanos, lagos de agua dulce, marismas de agua dulce y zonas previamente boscosas ahora degradadas. Está amenazada de extinción por la pérdida de su hábitat natural.

Referencias

• Schiøtz, A., Rödel, M.-O., Amiet, J.-L. & Burger, M. 2004. Hyperolius guttulatus. 2006 IUCN Red List of Threatened Species. Consultado el 22 de julio de 2007.

Hyperolius guttulatus Hyperolius generoko animalia da. Anfibioen barruko Hyperoliidae familian sailkatuta dago, Anura ordenan.

Erreferentziak

Ikus, gainera

• Hyperoliidae

Hyperolius guttulatus est une espèce d'amphibiens de la famille des Hyperoliidae^[1].

Répartition

Cette espèce se rencontre en Guinée, au Sierra Leone, au Liberia, en Côte d'Ivoire, au Ghana, au Togo, au Bénin, au Nigeria, au Cameroun et au Gabon^[1],[2].

Publication originale

• Günther, 1858 : Catalogue of the Batrachia Salientia in the collection of the British Museum p. 319-328 (texte intégral).

Notes et références

Hyperolius guttulatus là một loài ếch thuộc họ Hyperoliidae. Loài này có ở Cameroon, Bờ Biển Ngà, Gabon, Ghana, Guinea, Liberia, Nigeria, Sierra Leone, và có thể cả Guinea Xích Đạo. Môi trường sống tự nhiên của chúng là rừng ẩm vùng đất thấp nhiệt đới hoặc cận nhiệt đới, xavan ẩm, đầm nước, hồ nước ngọt, đầm nước ngọt, và rừng trước đây suy thoái nghiêm trọng. Chúng hiện đang bị đe dọa vì mất môi trường sống.

Tham khảo

• Schiøtz, A., Rödel, M.-O., Amiet, J.-L. & Burger, M. 2004. Hyperolius guttulatus. 2006 IUCN Red List of Threatened Species. Truy cập 22 tháng 7 năm 2007.

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