Phelsuma ornataOrnate Day Gecko

Ge­o­graphic Range

The Mau­ri­tius or­nate day gecko, Phel­suma or­nata or­nata, is en­demic to the In­dian Ocean re­gion. It in­hab­its trop­i­cal forests and co­conut plan­ta­tions on Mau­ri­tius, an is­land in the west­ern half of the In­dian Ocean near Mada­gas­car. An­other sub­species, the Re­union Is­land or­nate day gecko, Phel­suma or­nata in­ex­pec­tata, in­hab­its Re­union, a neigh­bor­ing is­land to Mau­ri­tius (Greg 1999, Lamar 1997).

Habi­tat

A na­tive to the trop­i­cal rain­forests and co­conut plan­ta­tions of two African Is­lands, P. or­nata spends it's days and nights on leaves and branches, tend­ing to pre­fer smooth areas to rest and sun­bathe. With its abil­ity to sur­vive in al­tered habi­tats, this day gecko is often seen roam­ing about in cul­ti­vated areas and walk­ing up walls or across ceil­ings in neigh­bor­ing homes (Greg 1999, Lamar 1997).

Phys­i­cal De­scrip­tion

Like many geckos, Phel­suma or­nata is char­ac­ter­ized by its soft skin, bizarre eyes, spe­cial­ized feet, and bril­liant col­ors. Gaily col­ored in strik­ing pat­terns of greens, blues, yel­lows, reds, and or­anges, the dry-scaly skin is fine and sen­si­tive, mak­ing it ex­tremely sus­cep­ti­ble to tears. The un­blink­ing, large eyes are lid­less and cov­ered by a trans­par­ent, pro­tec­tive shield that is kept clean by the thick, sticky tongue; the pupils of the eye are round, to com­pen­sate for the geckos di­ur­nal lifestyle. At the end of its short-strong limbs are ex­panded toe pads with scales (lamel­lae) cov­ered by a myr­iad of mi­cro­scopic hair-like bris­tles (setae). At the tip of each bris­tle, there are be­tween 100 and 1000 minute suc­tion cups, which al­lows the gecko to walk up walls, across ceil­ings, and even across the smooth pane of a glass win­dow. Phel­suma or­nata, one of the smalles rep­tiles in the world, ranges in length from 1.5 to 2.5 cm. It has a broad-flat­tened head and its thick-stumpy tail breaks eas­ily, but will begin to re­gen­er­ate after only a few days. There is sex­ual di­mor­phism. Male P.​ornata, in com­par­i­son to fe­males, are gen­er­ally more mas­sive and have pro­por­tion­ately larger femoral pores, ob­vi­ous dur­ing the breed­ing sea­son, that con­tinue un­in­ter­rupted into the pre­anal area (Bartlett and Bartlett 1997, Behler and King 1998, Lamar 1997).

Re­pro­duc­tion

Fe­male P.​ornata lay one to two eggs, often at­tached to one an­other and will hold eggs pressed to­gether with her hind legs until the shells be­come hard. These geckos are called "gluers", be­cause they at­tach their eggs to the sub­strate mak­ing it im­pos­si­ble to re­move the eggs safely with­out break­ing the shell. Once the eggs are laid, the fe­male aban­dons them to sur­vive on their own. In­cu­ba­tion lasts two to three months and the newly born geckos will reach their sex­ual ma­tu­rity in about a year. Sex­u­ally ma­ture fe­males are char­ac­ter­ized by hav­ing cal­cium de­posits in their en­dolym­phatic sacs lo­cated just be­hind their ears; sex­u­ally ma­ture males de­velop en­larged femoral pores on their hind legs and pro­duce a waxy ex­u­date re­sem­bling droplets (Bartlett and Bartlett 1997, Behler and King 1998).

Be­hav­ior

Di­ur­nal (ac­tive dur­ing the day) and ar­bo­real (tree dwelling), P. or­nata spends its days leap­ing along leaves and branches in search of in­sects, and lap­ping up nec­tar and over­ripe fruit. The day gecko is the most vocal of all lizards. Their voices vary from the sound orig­i­nated by an Asian lizard that prompted the fam­ily name, "geh-ho". This sound comes from click­ing the broad tongue against the roof of the mouth. The gecko has a wide va­ri­ety of preda­tors, in­clud­ing snakes and large in­ver­te­brae. Its skin, eas­ily torn, can be seen as a de­fense mech­a­nism against its preda­tors be­cause it en­ables them to es­cape (Behler and King 1998, Lamar 1997).

Food Habits

Like many of the species of Phel­suma in­hab­it­ing the is­lands around and on Mada­gas­car, Phel­suma or­nata is om­niv­o­rous, spend­ing its days leap­ing around in search of in­sects, lap­ping up nec­tar, saps, and juices, and con­sum­ing pollen and over­ripe fruits (Bartlett and Bartlett 1997).

Eco­nomic Im­por­tance for Hu­mans: Pos­i­tive

All day geckos, in­clud­ing Phel­suma or­nata, ben­e­fit hu­mans by help­ing to con­trol the in­sect pop­u­la­tion (Bartlett and Bartlett 1997). There is a pet trade in these an­i­mals.

Eco­nomic Im­por­tance for Hu­mans: Neg­a­tive

None.

Con­ser­va­tion Sta­tus

All Phel­suma are listed as CITES II an­i­mals, which means that trade within this genus is re­stricted. Con­ser­va­tion­ists fear that the long-term sur­vival of many of these species is being threat­ened by habi­tat de­struc­tion and that the ex­por­ta­tion of wild col­lected geckos for the pet trade is has­ten­ing the demise of many (Greg 1999, Bartlett and Bartlett 1997).

Other Com­ments

Al­though is some re­gions it is feared as a poi­so­nous lizard, P. or­nata is not ven­omous and would not be harm­ful to hu­mans (Greg 1999).

Con­trib­u­tors

Shan­non Riem­land (au­thor), Michi­gan State Uni­ver­sity, James Hard­ing (ed­i­tor), Michi­gan State Uni­ver­sity.

Glossary

native range

the area in which the animal is naturally found, the region in which it is endemic.

oceanic islands

islands that are not part of continental shelf areas, they are not, and have never been, connected to a continental land mass, most typically these are volcanic islands.

rainforest

rainforests, both temperate and tropical, are dominated by trees often forming a closed canopy with little light reaching the ground. Epiphytes and climbing plants are also abundant. Precipitation is typically not limiting, but may be somewhat seasonal.

Ref­er­ences

Bartlett, R., P. Bartlett. 1997. Lizard Care From A to Z. Bar­ron's Ed­u­ca­tion Se­ries, Inc..

Behler, J., F. King. 1979, 1998. Na­tional Audubon So­ci­ety Field Guide to North Amer­i­can Rep­tiles and Am­phib­ians. New York: Chan­ti­cleer Press, Inc..

Greg, L. 1999. "Leap­ing Lizards Home­page" (On-line). Ac­cessed No­vem­ber 5, 1999 at http://​www.​daygecko.​com/​.

Lamar, W. 1997. The World's Most Spec­tac­u­lar Rep­tiles and Am­phib­ians. Tampa, Florida: World Pub­li­ca­tions.