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All Journal Journal of Tropical Life Science : International Journal of Theoretical, Experimental, and Applied Life Sciences Iqtishadia: Jurnal Ekonomi dan Perbankan Syariah
Dian Ratri Wulandari
Biology Department, Faculty of Mathematics and Natural sciences, State University of Malang, Malang, Indonesia
Agriculture, Biological Sciences & Forestry Economics, Econometrics & Finance Environmental Science

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Embryo Development of Tree Frog Polypedates leucomystax at Campus of State University of Malang Pearlindah Peralindah; Emy Kusumawati; Dian Ratri Wulandari; Dwi Listyorini
Journal of Tropical Life Science Vol. 2 No. 3 (2012)
Publisher : Journal of Tropical Life Science

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Abstract

Tree frogs live in natural places which are unpolluted. Regarding their role as an ecological indicator, the decrease of frogs population in a particular habitat indicates the danger of environment quality decrease. Moreover, this condition can harm the frogs themselves. All kinds of frogs breed in aqueous environment such as ponds, marshes, and farming fields. One of the tree frogs, Polypedates leucomystax, which belongs to Familia Rachophoridae, is widely spread in Indonesia. This frog has yellowish brown skin with black spots or six lines extending from head to the posterior tip of body. A breeding couple of the frog produces foam nests on the water or plants around water body, where they will nest their fertilized eggs. This species produces over a hundred embryos in one spawning season. These embryos require appropriate conditions to develop normally in the nature. Frog embryo development may becomes a reference to understand how the frog population survives. This study focused on P. leucomystax with regards to its decrease in number due to the drying up of the environment and a lot lost of trees in Campus of State University of Malang. The development of P. leucomystax embryos in the reproduction foam was observed until it reached a tadpole stage. The result showed that the embryos developed in the foam until they hatched then they move out of the foam into the water under which they would continue their development. Considering that water body is a critical requirement for the development of P. leucomystax embryos, it is our responsibility to make any efforts to conserve not only the trees but also any type of water bodies including ponds, marshes, and farming fields as well. Keywords: embryo development, Polypedates leucomystax, Tree frog conservation
Observation of Frog Species in State University of Malang as a Preliminary Effort on Frog Conservation Dian Ratri Wulandari; Muhammad Habibi; Dwi Listyorini
Journal of Tropical Life Science Vol. 3 No. 1 (2013)
Publisher : Journal of Tropical Life Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/jtls.3.1.%x

Abstract

Frog is an amphibian which widely distributed around the world. Indonesia houses 450 species which represent 11% of frog species in the world. In Java Island living 42 species of frogs and toads. Frogs can be used as an environment indicator due to the presence of frog in a particular place indicates that the place is stay natural and unpolluted. State University of Malang Campus #1 which is located in the heart of Malang District has been developing rapidly, currently. Thus, it requires for the construction of new various facilities to support it widen activities. Extensive construction can be destructive even damaging to the habitat of frog, which potentially threat the frog life, if it does not take a consideration on the environmental impact, carefully. This study aimed to identify the species of frog which is survives in State University of Malang with consideration of the frog species found in 1995. Species identification conducted by observing the morphologicalcharacter. This study found four species with three species which are survive and as found in 1995; those are Duttaphrynus melanostictus, Polypedates leucomystax, and Kaloula baleta; and one new species that is Rana chalconota. This study also reveals there are four species which are extinct; those are Fejervarya cancrivora, Fejervarya limnocharis, Ingerophrynus biporcatus, and Occidoziga lima. This situation shows the decreasing amount of species from 7 to 4 within 17 years. This result indicates that there is a serious environmental degradation which caused the losing of frog habitats. Further research is needed to study the ecological condition changing in order to save the frog species.
Haplotype Diversity of COI Gene of Hylarana chalconota Species Found at State University of Malang Dian Ratri Wulandari; Ibrohim Ibrohim; Dwi Listyorini
Journal of Tropical Life Science Vol. 4 No. 1 (2014)
Publisher : Journal of Tropical Life Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/jtls.4.1.%x

Abstract

Hylarana chalconota is a cryptic species of frog endemic to Java Island . This species is small with long legs, and brown skin. The Snout-Vent Length (SVL) ranges between 30-40 mm for male and 45-65 mm for female. Reports the existence of this species in State University of Malang, which was not found in 1995. To reveal the haplotype diversity of COI gene in this species, we analyzed Cytochrome-c oxidase subunit-1 (COI) sequences of both samples. The both samples had 604 bp and 574 bp fragment length, respectively. These fragments showed polymorphism; with mutation position in sites 104, 105, and 124. Based on this result, we suggest that the two samples share a different haplotypes, proposed as UM1 and UM2
Analisis Potensi Ekonomi terhadap PAD Sektor Pariwisata Kabupaten Tulungagung di Masa Transisi Covid-19 Wahyuningrum, Sri Rizqi; Pera Wibowo Putro; Dian Ratri Wulandari
IQTISHADIA Jurnal Ekonomi & Perbankan Syariah Vol. 11 No. 1 (2024)
Publisher : Institut Agama Islam Negeri Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19105/iqtishadia.v11i1.10475

Abstract

Pandemi Covid-19 telah menyebabkan penurunan pertumbuhan ekonomi di seluruh wilayah Indonesia. Pemerintah mengambil tindakan tegas dengan memberlakukan social distancing, karantina kesehatan maupun pembatasan gerak masyarakat yang mengakibatkan pelarangan kunjungan wisatawan ke objek wisata. Hal tersebut berlaku di seluruh wilayah Indonesia tanpa terkecuali Kabupaten Tulungagung. Kebijakan yang telah di berlakukan pemerintah semenjak awal tahun 2020 membuat Sektor Pariwisata mengalami kelumpuhan. Dalam RPJMD kabupaten Tulungagung sektor pariwisata merupakan salah satu prioritas pembangunan. Pemerintah Kabupaten Tulungagung harus berani mengambil langkah untuk menangani kondisi ini dengan melakukan pengkajian ulang terhadap perencanaan di sektor pariwisata. Penelitian ini bertujuan untuk mengetahui potensi ekonomi sektor pariwisata di Kabupaten Tulungagung selama masa pandemi Covid 19 yang terdiri dari jumlah wisatawan dan PDRB perkapita serta memberikan rekomendasi strategi kebijakan kepada Pemerintah Kabupaten Tulungagung yang dapat dilakukan pada masa pandemi covid-19. Metode penelitian yang digunakan dalam penelitian ini adalah pendekatan Kuantitatif dengan metode deskriptif. Hasil analisis menunjukkan bahwa Jumlah wisatawan berpengaruh positif dan signifikan terhadap PAD sektor pariwisata, sedangkan untuk PDRB perkapita berpengaruh positif dan tidak siginifikan terhadap PAD sektor pariwisata. Namun kedua Variabel independen secara simultan berpengaruh terhadap variabel dependen.[ The Covid-19 pandemic has caused a decline in economic growth in all regions of Indonesia. The government took firm action by imposing social distancing, health quarantine and restrictions on people's movements which resulted in banning tourist visits to tourist objects. This applies in all regions of Indonesia without exception. The policies that have been enforced by the government since early 2020 have paralyzed the tourism sector. In the Tulungagung district RPJMD the tourism sector is one of the development priorities. The Tulungagung Regency Government must have the courage to take steps to deal with this condition by conducting a review of planning in the tourism sector. This study aims to determine the economic potential of the tourism sector in Tulungagung Regency during the Covid 19 pandemic which consists of the number of tourists and PDRB per capita and to provide policy strategy recommendations to the Tulungagung Regency Government that can be carried out during the Covid-19 pandemic. The research method used in this study is a quantitative approach with descriptive methods. The results of the analysis show that the number of tourists has a positive and significant effect on the tourism sector's PAD, while per capita PDRB has a positive and insignificant effect on the tourism sector's PAD. But the two independent variables simultaneously affect the dependent variable.]
Co-Authors Dwi Listyorini Emy Kusumawati Ibrohim Muhammad Habibi Pearlindah Peralindah Pera Wibowo Putro Wahyuningrum, Sri Rizqi