Macro and Micro-anatomy of Tokay Gecko’s Reproduction Organs and Growth of External Body in Support on Reproduction Activities (Squamata: Gekkonidae: Gekko gecko)

Hellen Kurniati,Ni Luh Putu Rischa Phadmacanty

doi:10.19087/jveteriner.2021.22.3.429

Abstract

Tokay gecko, Gekko gecko is an oviparous lizard that is distributed very widely in tropical Asia. The sexual maturity stage of tokay gecko does not have seasonal reproductive activity; they reproduce along the year. The study on the reproduction organ and growth of external morphology of tokay gecko is the first contribution to further scientific information. Gonadal micro-anatomy that were shown by histology and macro-anatomy to include the sex accessories could be demonstrated in this lizard as a criteria for the reproductive activity of urogenital organs. Males and females tokay gecko have simple urogenital track systems and also the males have simple hemipenis morphology. Testes position inside the male body is not symmetric, in the right testis is always in a higher position than left testis. Based on analysis of the measurement of the posterior part of the body, the width of cloaca, width of base tail and length of hind limb increase asymptotic growth on snout to vent length (SVL) SVL?130 mm for females, and SVL?150 mm for males. Asymptotic growth in the posterior part of the male and female body is a form of co-evolution, besides the male urogenital organs and the female reproductive system which also support co-evolution in the reproductive organs.

Highlights

Tokay gecko (Gekko gecko) is an oviparous Squamata, which the fertilization of the egg occurs inside the female’s body
Tokay gecko is a widespread reptile. They distributed in southern China, northeast Asia, and Southeast Asia included all islands in Indonesia (Caillabet, 2013; Reilly et al, 2019); tokay geckos are very adaptable in many different habitats
Male Reproductive Tracy Macro-anatomy The male urogenital organs of the Tokay gecko were similar to A. carolinensis (Crews, 1978)

Summary

Introduction

Tokay gecko (Gekko gecko) is an oviparous Squamata, which the fertilization of the egg occurs inside the female’s body. Tokay geckos reproduce continuously without depending on the season This pattern occurs in house lizards, Hemidactylus frenatus (Goldberg and Kraus, 2016), both of which gekkonid species live sympatric in human habitation. Squamata reproduces offspring depending on the season, especially those of the species in the temperate regions, such as Acanthodactylus erythrurus (Castilla et al, 1992), Anolis carolinensis (Jenssen et al, 1995), Takydromus woltery (Luo et al, 2012), Goniurosaurus kuroiwae (Kurita and Toda, 2013), and Anolis carolinensis (Johnson et al, 2014). The current status of the tokay gecko is not comparable with the biological information in revealed the life of these reptiles, especially those living in Indonesia. The comparison of the hemipenis morphology of G. smithii and the others Gekko groups that live in southeastern mainland Asia and the Philippine Islands was revealed by Rösler et al (2011)

Methods

Results

Conclusion