ABSTRACTOn CoP 18 which will be held in Sri Lanka in 2019, house gecko was proposed to be uplisted up listed from the non-appendix status of CITES to be included the list of CITES appendix II on the reasons that the hunting of the reptile was very large and uncontrolled. In order to anticipate the up listing of house gecko status, LIPI as a Scientific Authority in Indonesia recommended quota for house gecko in 2019 to be 1,800,000 individuals. To see that such a quota does not have a negative impact on the population of house gecko in the wild, a survey was conducted by using the close questioner system method by visiting housing in a village; where in this survey the villages were located at the foot hill of Gunung Karang, Pandeglang Regency, Banten Province. The survey was conducted on March 18 to April 1, 2019. The total number of villages visited was 8 villages which were divided into three sub-districts. The total area surveyed in 8 villages was around 94.5 hectares. The total number of houses visited was 740 houses; the total number of houses that contained the house gecko was 211 houses. The total number of house gecko by interviewed was 260 individuals, while the total number of house geckos by observed was 88 individuals. The survey results obtained an average population density of house gecko by interviewing eight villages was 3.66 individuals/hectares, while the observation results were 1.15 individuals/hectares. The approach to the average population density of houses gecko by interviewing with the results of 3.66 individuals/hectares was assumed to be the density that was close to the logical number. Extrapolating the density of house geckos in Pandeglang Regency which covers an area of 229,071 hectares excluded paddy field area was considered to be inhabited by house gecko, so the extrapolation of the number of house geckos in Pandeglang Regency is around 838,399.86 individuals. Keywords: Gekko gecko, house gecko, Java, population
During three weeks field work survey (16th June-7 July 1999) on seven habitat types in Gunung Supiori Nature Reserve, Biak-Numfor District, Papua 21 species of reptiles (six species of geckos, nine species of skinks, one species of monitor lizard and five species of snakes) and two species of amphibians were found.On all of identified species, no one is endemic species in Supiori Island, although the island has drifted for 200 million years ago.The phenomena has been occurring in this area is tend to be Brown Phenomena (Brown, 1997).Based on information from local people, two species of sea turtles (Chelonia mydas and Eretmochelys imbricata) occur barely in surrounding waters and population status of Crocodylus porosus the species that inhabitant in mangrove has already been extinct since 1980-year era.Population status of reptiles that listed in Appendix II CITES, such as Candoia aspera and some species of reptiles and frogs that listed as non-appendix CITES are almost still in good condition; the good population status is also occur on protected monitor lizard Varanus indicus.
ABSTRACTThe Effect of Environmental Factors on the Horizontal and Vertical Movement of Frogs. Fourenvironmental factors (moon phase, air temperature, water temperature and air humidity) weremeasured to determine the impact of environmental factors on the dynamics of horizontal andvertical spread of the frog Rana erythraea, R. nicobariensis and Occidozyga lima in a wetlandarea of Ecology Park, LIPI Campus Cibinong. Observation was done follows transect line(100 meters long) and set along the edge of the lake where the habitat was more diversecompared to the other sites. Observations were carried out from July to November 2009. Theposition of individual frogs (distance from waterâs edge and height from the ground or water)was recorded and then grouped into intervals of 100 cm distance and height each. Correlationanalysis between the number of individuals per unit distance or height with environmentalfactors was measured using the statistical program SPSS version 16.0. The results of thisstudy proved that the air and water temperature as well as air humidity have significant effecton horizontal and vertical ecological distribution of R. erythraea and R. nicobariensis; whereasfour environmental factors had no impact on horizontal distribution of O. lima. The movementof R. erythraea was strongly positively correlated with air temperature, but strongly negativelycorrelated with air humidity; however the abundance of R. nicobariensis was strongly negativelycorrelated with air temperature and strongly positively correlated with air humidity. Mixedvegetation of species Leerxia hexandra and Eleocharis dulcis at a distance between 0-100 cmfrom the edge of the water and height between 0-100 cm from the ground constituted thepreferred microhabitat of frog species R. erythraea and R. nicobariensis.Key words: Environmental factors, Rana erythraea, Rana nicobariensis, Occidoziga lima,Ecology Park, wetland.
Hylarana nicobariensis (Stoliczka, 1870) is a very common frog, which has a wide distribution, covering the southern part of Thailand, Peninsular Malaysia, Sumatra, Borneo, Java, Bali and Palawan in the Philippines. The presence of this frog is very easy to be recognized by listening its shrill call that is sounded loudly all day. Detailed descriptions of H. nicobariensisâs calls from Ulu Gombak in Peninsular Malaysia and Danum Valley in Sarawak have been published by Jehle and Arak (1998), which are some call characters of the frog from the two locations are significantly different. To determine the call characters that can distinguish among populations of this frog, advertisement calls of five different populations (Batukaru, Curup, Limau Manis, Curug Nangka and Lake Ecology Park) were analyzed. The characters of the call waves on the five populations are different in the structure of sub-pulses, dominant frequency and lower frequency. Among the five populations, the population from Lake Ecology Park is the most different in the terms of the dominant frequency (3996.95 Â± 124.74 Hz) and lower frequency (1692.51 Â± 80.77 Hz), of this population both these characters occupy the highest level compared to four other populations; however individuals from Curup occupy the lowest level on dominant frequency (2919.67 Â± 67.76 Hz) and lower frequency (832.96 Â± 32.42 Hz).Key words: Ranidae, Hylarana nicobariensis, bioacoustics
Morphometric study has showed that Asian Striped Tree Frog popula-tions from Sulawesi can be separated from populations discovered in other islands (Sumatra, Java and Kalimantan) and become accepted as a new species, namely Polypedates iskandari (Riyanto et.al., 2011). However, the results on analysis of vocalizations sequences have indicated that, P. iskandari and P. leucomystax from Java population use similar acoustic bandwidth frequencies in the major call. The different between the two species can only be found in minor calls; P. iskandari has a higher dominant frequency range than P. leucomystax. This study shows that minor calls are not important in communication among males. Therefore, based on acoustic analysis, there is no sufficient evidence to classify the Sulawesi population of P. leucomystax as a new species.Keywords: vocalization, Polypedates leucomystax, P. iskandari, Sulawesi, Java
ABSTRACTKarawang District is the largest producer of frog meat in West Java. To find out how the frog harvestingÂ impacts to the represent condition of population in the wild, on 16-27 May 2016 population survey wasÂ conducted on paddy field in East Karawang by implementing transect method with total length was 3000Â meters. The results of this transect method showed that the population of juvenile was the highest in most areasÂ of transects, followed by pre-adult population. The population of adult individuals was at the lowest and mostÂ adult male individuals were detected by the call that they make. Conditions of water supply in rice fields alsoÂ determine the conditions of juvenile and pre-adult populations; newly planted rice fields with high waterÂ availability obtained the highest population per unit area compared to the condition of paddy fields with a littleÂ water availability; but exceptions to the plowed rice fields, despite the availability of a lot of water butÂ disturbance from human activities was also high. Average density per unit area m2 for a little watery rice fieldsÂ to dry with a total length of 1500 meters transect were as follows: (1) juvenil density was 0.33 individuals/m2,Â (2) pre-adult density was 0.04 individuals/m2, (3) adult density was 0.005 individuals/m2. Average density forÂ much watery rice fields with a total length of 1200 meters transect were as follows: (1) juvenile density wasÂ 0.89 individuals/m2, (2) pre-adult density was 0.08 individuals/m2, (3) adult density was 0.01 individuals/m2.Key words: population density, Fejervarya cancrivora, paddy field, Karawang District