scholarly journals Pengaruh Komposisi Pakan Terhadap Laju Pertumbuhan Tukik Penyu Lekang di Serangan, Bali

2020 ◽  
Vol 9 (4) ◽  
pp. 362-368
Author(s):  
Feny Amelia Br Ginting ◽  
Ali Djunaedi ◽  
Raden Ario
Keyword(s):  
Growth Rate ◽  
Carapace Length ◽  
Carapace Width ◽  
Specific Weight ◽  
Olive Ridley ◽  
Tuna Fish ◽  
Lepidochelys Olivacea ◽  
Randomized Design ◽  
Turtle Conservation ◽  
Composition Ratios

ABSTRAK: Tingkat keberhasilan hidup tukik menuju dewasa dapat ditentukan dengan pemberian pakan. Tetapi, saat ini jenis pakan yang paling tepat untuk tukik penyu belum diketahui. Pemberian jenis pakan dengan komposisi dan dosis yang tepat akan mempengaruhi tingkat pertumbuhan tukik penyu lekang dengan baik dan akan mempengaruhi keberhasilan hidupnya saat dilepaskan ke laut. Tujuan dari penelitian ini adalah mengetahui pengaruh pemberian pakan dengan komposisi yang berbeda terhadap pertumbuhan tukik Penyu Lekang (Lepidochelys olivacea) dan mengetahui tingkat kelulusan hidupnya selama masa pemeliharaan 5 Minggu. Lokasi penelitian dilakukan di Turtle Conservation and Education Center Serangan, Bali. Metode penelitian yang digunakan adalah metode eksperimental dengan menggunakan Rancangan Acak Lengkap (RAL) dengan 4 perlakuan yaitu ikan tongkol 100% (A),ikan tongkol 75% : kerang totok 25% (B), ikan tongkol 50% : kerang totok 50% (C), ikan tongkol 25% : kerang totok 75% dan masing- masing 3 ulangan disetiap perlakuan. Tukik Penyu Lekang diberikan pakan setiap pagi dan sore, dan diukur pertambahan berat, panjang, lebar dan morfologinya setiap 1 minggu sekali. hasil penelitian dapat disimpulkan bahwa pemberian pakan Ikan Tongkol dengan perbandingan komposisi yang berbeda memberikan pengaruh yang sangat nyata (p < 0,05) terhadap laju pertumbuhan spesifik berat, panjang karapas, dan lebar karapas tukik Penyu Lekang. Pakan dengan komposisi Ikan Tongkol 100% merupakan pakan paling baik diantara perlakuan pakan lainnya, dengan menghasilkan tingkat laju pertumbuhan spesifik berat 1,43% perhari, panjang karapas 0,62% perhari dan lebar karapas 0,94% perhari.  ABSTRACT: The success rate of living for hatchlings to adulthood can be determined by feeding. However, it is currently unknown what type of feed is most suitable for turtle hatchlings. The provision of types of feed with the right composition and dosage will affect the growth rate of the lekang turtle hatchlings and will affect their success when released into the sea. The purpose of this study was to determine the effect of feeding with different compositions on the growth of Olive Ridley (Lepidochelys olivacea) hatchlings and to determine their survival rate during the 5 week rearing period. The research location was conducted at the Turtle Conservation and Education Center Serangan, Bali. The research method used was an experimental method using a completely randomized design (CRD) with 4 treatments, namely 100% tuna (A), 75% tuna: 25% totok (B), 50% tuna: 50% totok ( C), tuna 25%: 75% totok clams and 3 replications each in each treatment. Lekang Turtle Hatchlings are given food every morning and evening, and their weight, length, width and morphology gain is measured every 1 week. The results showed that feeding Tuna Fish with different composition ratios had a very significant effect (p <0.05) on the specific growth rate of weight, carapace length, and carapace width of the Lekang turtle hatchlings. Feed with 100% tuna composition is the best feed among other feed treatments, with a specific weight growth rate of 1.43% per day, carapace length 0.62% per day and carapace width 0.94% per day.

scholarly journals PENGARUH JENIS BAKTERI PROBIOTIK TERHADAP PERTUMBUHAN IKAN LELE MUTIARA YANG DIPELIHARA MENGGUNAKAN SISTEM BIOFLOK

2021 ◽  
Vol 9 (1) ◽  
pp. 41-48
Author(s):  
Harits Noodin ◽  
Ita Apriani
Keyword(s):  
Growth Rate ◽  
Bacillus Subtilis ◽  
Specific Weight ◽  
Fish Growth ◽  
Probiotic Bacteria ◽  
Feed Conversion ◽  
Growth And Survival ◽  
Randomized Design ◽  
Probiotic Treatment ◽  
Absolute Length

The main problems faced by fish farmers are waste, uneaten feed and feces.  Which can reduce water quality and have a significant impact on fish growth and survival. This study aims to determine the effect of giving various types of probiotics on the growth rate and viability of Mutiara catfish raised using the biofloc system. We used Lactobacillus sp., Bacillus subtilis, and Nitrobacter as probiotic bacteria. This study used a completely randomized design experimental method with 4 treatments and 3 replications, namely K = probiotic less/control, P1= Lactobacillus probiotic, P2= Bacillus subtilis probiotic, P3= Nitrobacter probiotic. Catfish are reared for 30 days, feeding 3 times a day with FR 5% of body biomass. The parameters observed were absolute length growth, survival, Feed Conversion Ratio (FCR) and Specific Growth Rate (SGR) which were analyzed using ANOVA (P <0.05) and Duncan's test to see the differences between treatments. The results showed that the bacteria probiotic treatment had no significant effect on FCR and fish survival, but had a Lactobacillus sp significant effect on growth in absolute length (3.96 ± 0.06 cm) and the growth rate of daily specific weight (5,45±0,18 %/day).  To increase the length and weight growth of catfish fry, probiotic bacteria of the type Lactobacillus sp. on cultivation media.Key words :biofloc, growth rate, lactobacillus, mutiara catfish, probiotics

scholarly journals Prevalensi Dermatitis Ulseratif pada Tukik Lekang yang Dipelihara di Turtle Conservation and Education Centre Serangan

2018 ◽  
pp. 57
Author(s):  
Annabella Ruth Wijaya ◽  
Ida Bagus Windia Adnyana ◽  
I Made Kardena
Keyword(s):  
Carapace Length ◽  
Carapace Width ◽  
Straight Carapace Length ◽  
Turtle Conservation ◽  
Education Centre ◽  
Hematoxylin Eosin

Dermatitis ulseratif adalah penyakit yang paling sering menjangkiti penyu dan/atau tukik yang dipelihara di kolam-kolam penampungan, termasuk di Turtle Conservation and Education Centre (TCEC), Serangan. Penelitian dilakukan untuk mengetahui prevalensi, gambar patologi, dan lokasi jejas dermatitis ulseratif pada tukik lekang yang dipelihara di TCEC Serangan, serta perbedaan indeks kondisi tubuh tukik lekang penderita dermatitis ulseratif dengan tukik yang sehat. Prevalensi diketahui dengan menghitung jumlah tukik lekang penderita yang dibandingkan dengan total tukik di TCEC. Morfometri (straight carapace length, straight carapace width, curved carapace length, curved carapace width) dan berat badan tukik diukur untuk mengetahui indeks kondisi tubuh tukik lalu perbedaan indeks kondisi tubuh dibandingkan dengan Uji - T tidak berpasangan. Sampel jaringan kulit diproses menjadi preparat dan diwarnai dengan pewarnaan rutin Hematoxylin eosin(HE). Hasil penelitian ini yaitu : prevalensi dermatitis ulseratif pada tukik lekang di TCEC adalah 16,2%, ditemukan jejas luka dengan kerak kekuningan berdiameter 2 mm hingga 2 cm dan secara mikroskopis ditemukan infiltrasi heterofil dan sel mononuklear pada dermis kulit yang disertai dengan erosi, hiperkeratosis parakeratosis, dan materi nekrosis yang berisi debris sel. Jejas paling sering ditemukan pada area leher (63,04%), diikuti dengan flippers, kepala, kulit dekat karapas, kelopak mata, dan area leher dan flippers secara bersamaan. Terdapat perbedaan indeks kondisi tubuh yang sangat nyata antara tukik lekang penderita dengan yang sehat, dimana rerata indeks kondisi tubuh tukik penderita lebih besar dari yang sehat. Perlu dilakukan perbaikan manajemen pemeliharaan tukik di TCEC.

Nesting biology and conservation of the olive ridley sea turtle (Lepidochelys olivacea) in Brazil, 1991/1992 to 2002/2003

2007 ◽  
Vol 87 (4) ◽  
pp. 1047-1056 ◽  
Author(s):  
Augusto Cesar C.D. da Silva ◽  
Jaqueline C. de Castilhos ◽  
Gustave G. Lopez ◽  
Paulo C.R. Barata
Keyword(s):  
Fold Increase ◽  
Sea Turtle ◽  
Biological Data ◽  
Biological Knowledge ◽  
Olive Ridley ◽  
Nesting Biology ◽  
Western Atlantic ◽  
Lepidochelys Olivacea ◽  
Turtle Conservation ◽  
Nesting Activity

This article presents biological data and an assessment of the conservation of the olive ridley sea turtle (Lepidochelys olivacea) population nesting in the States of Sergipe and Bahia, north-eastern Brazil, between 1991/1992 and 2002/2003. Projeto TAMAR-IBAMA (the Brazilian Sea Turtle Conservation Programme) maintains seven field stations in that region to monitor nesting activity over 339 km of beach. An increasing trend was observed in the estimated number of nests per nesting season: from 252 nests in 1991/1992 to 2606 in 2002/2003, an approximately 10-fold increase in 11 years. The available data and biological knowledge suggest that TAMAR's conservation efforts may have contributed to the significant increase in olive ridley nesting in Sergipe and Bahia; that increase is not only of regional importance, but also of significance at the western Atlantic level.

scholarly journals Suitability Analysis of Habitat and Ecotourism of Olive Ridley Sea Turtle (Lepidochelys olivacea) in Development of Turtle Conservation Strategy at Taman Kili-Kili Beach

2021 ◽  
Vol 009 (01) ◽  
pp. 86-100
Author(s):  
Vian Dedi Pratama ◽  
◽  
Sukandar Sukandar ◽  
Marjono Marjono ◽  
Andi Kurniawan ◽  
...  
Keyword(s):  
Sea Turtle ◽  
Conservation Strategy ◽  
Conformity Index ◽  
Suitability Analysis ◽  
Conservation Areas ◽  
Olive Ridley ◽  
Community Group ◽  
Conservation Area ◽  
Lepidochelys Olivacea ◽  
Turtle Conservation

Taman Kili-Kili Beach is designated as an Essential Ecosystem Area (KEE). 188/39/KPTS/013/2020. According to the Supervisory Community Group (Pokmaswas), in 2011-2020, there was an increase in broodstock as many as 52 turtles, and the eggs saved as many as 3323 eggs. However, since 2013 Pokmaswas data shows a decrease in the population of hawksbill and green turtles in turtle conservation areas, which is thought to be caused by climate change, global warming, and animals. This study aims to analyze environmental baselines, turtle populations, and the value of turtle ecotourism (ecological, economic values) and develop strategies to support turtle conservation at Taman Kili-Kili Beach Trenggalek Regency. The results of the adjustment of nesting habitats and turtle ecotourism, calculation of the Habitat Conformity Index (IKH) of turtle nesting, IKH = 77.77%, which belongs to the category (S1) is very suitable to be used as a conservation area and turtle nesting habitat. While the results of the calculation of the Turtle Ecotourism Conformity Index (IKW), IKW = 84.93%, which is included in the (S1) category, which is very suitable for use a turtle tourism area. The strategy for developing turtle ecotourism is in quadrant II, meaning that it utilizes the strengths possessed in the turtle conservation area by minimizing the threats that it will experience.

scholarly journals Plastic ingestion by sea turtles in Paraíba State, Northeast Brazil

2015 ◽  
Vol 105 (3) ◽  
pp. 265-270 ◽  
Author(s):  
Camila Poli ◽  
Daniel Oliveira Mesquita ◽  
Cinthia Saska ◽  
Rita Mascarenhas
Keyword(s):  
Gastrointestinal Tract ◽  
Carapace Length ◽  
Sea Turtles ◽  
Chelonia Mydas ◽  
Northeast Brazil ◽  
Plastic Pollution ◽  
Olive Ridley ◽  
Eretmochelys Imbricata ◽  
Lepidochelys Olivacea ◽  
Green Turtles

ABSTRACT Currently, plastics are recognized as a major pollutant of the marine environment, representing a serious threat to ocean wildlife. Here, we examined the occurrence and effects of plastic ingestion by sea turtles found stranded along the coast of Paraíba State, Brazil from August 2009 to July 2010. Ninety-eight digestive tracts were examined, with plastic found in 20 (20.4%). Sixty five percent (n = 13) of turtles with plastic in the digestive tract were green turtles (Chelonia mydas), 25% (n = 5) were hawksbills (Eretmochelys imbricata), and 10% (n = 2) were olive ridley (Lepidochelys olivacea). More plastic was found in the intestine (85%) than in other parts of the gastrointestinal tract. We observed complete blockage of the gastrointestinal tract due to the presence of plastic in 13 of the 20 turtles that had ingested plastic. No correlation was found between the curved carapace length (CCL) and the number or mass of the plastic ingested items. Significant differences were found between the intake of hard and soft plastic and the ingestion of white/transparent and colored plastic, with soft and white/transparent plastics being more commonly ingested. This study reveals the serious problem of plastic pollution to sea turtles at the area.

Effects of incubation technique on proxies for olive ridley sea turtle (Lepidochelys olivacea) neonate fitness

2016 ◽  
Vol 37 (4) ◽  
pp. 417-426 ◽  
Author(s):  
Catherine E. Hart ◽  
Alan A. Zavala-Norzagaray ◽  
Odin Benítez-Luna ◽  
Luis Javier Plata-Rosas ◽  
F. Alberto Abreu-Grobois ◽  
...  
Keyword(s):  
Natural Environment ◽  
Carapace Length ◽  
Sea Turtle ◽  
Locomotor Performance ◽  
Direct Effects ◽  
Olive Ridley ◽  
Lepidochelys Olivacea ◽  
Performance Time ◽  
Righting Response ◽  
Nesting Beaches

Sea turtles and their nests face multiple threats on nesting beaches. Techniques have been developed to mitigate threats, these include relocating nests to fenced-off hatcheries or polystyrene boxes. The alteration of the nest’s natural environment may have direct effects on hatchling phenotype and locomotor performance. To test the effects of these two incubation conditions on proxies for hatchling fitness, we analysed locomotor performance (time to crawl 3 m and righting response) and phenotypic measures (weight and carapace length and width) of olive ridley sea turtle (Lepidochelys olivacea) hatchlings. We found that mean temperature was higher in hatcheries (30.5°C) than in polystyrene boxes (29.9°C) and that hatchlings incubated in polystyrene boxes had smaller straight carapace length (39.2 mm ± 2.0) and were significantly slower in crawl speed (CS) (0.0107 m s−1 ± 0.005) than those from hatcheries (SCL = 40.7 mm ± 1.3; CS = 0.018 m s−1 ± 0.005).

scholarly journals Sosialisasi Konservasi Penyu Laut Berbasis Edukasi di SMPN 1 Desa Keude Panga Kecamatan Panga Kabupaten Aceh Jaya Provinsi Aceh

2020 ◽  
Vol 1 (1) ◽  
Author(s):  
Mohamad Gazali ◽  
Supriadi Supriadi ◽  
Masyumi Masyumi ◽  
Irham Dika
Keyword(s):  
Junior High School ◽  
Sea Turtle ◽  
Dermochelys Coriacea ◽  
Young Generation ◽  
Olive Ridley ◽  
Lepidochelys Olivacea ◽  
Turtle Conservation ◽  
Nesting Site ◽  
Sea Turtle Conservation ◽  
Leatherback Sea Turtle

According to observation and interview that undertaken in Panga District Aceh Jaya Regency that there are 3 species of sea turtle with coastal line is 9.3. km. The third of such sea turtle including Olive ridley sea turtle(Lepidochelys  olivacea), hawkbill sea turtle (Eremochelys imbricate), leatherback sea turtle (Dermochelys coriacea). The target of community that involved in socialization of sea turtle are student  of junior high school. Earlier education to young generation  regarding the important of sea turtle conservation educated-based is the effort for keeping sea turtle in natural with undertook the socialization to young generation in order to grow a caring and loving to sea turtle sustainablity. Coastal community still undertook to hunting sea turtle’s eggs for trading in the traditional market dan restaurants. It is caused by lack of understanding and awareness regarding sea turtle that threaten scarce. In this activity, the researcher will undertake persuasive approaach and solutive in changing a mindset of young generation gradually that inhabit in near nesting site. In this activity including suvey activity prior to socialization that near the nesting site, socialization activity in the SMPN 1 Panga that selected as target school in the socialization of Sea Turtle Conservation, conducting the retelling story games, and conducting hatchlings release programme to the sea with community elements.

scholarly journals LAJU PERTUMBUHAN DAN EFISIENSI PAKAN IKAN NILA (Oreochromis niloticus) YANG DIPELIHARA DALAM KOLAM TERPAL YANG DIPUASAKAN SECARA PERIODIK

2018 ◽  
Vol 5 (1) ◽  
pp. 45-55
Author(s):  
Intan Permata Sari ◽  
Yulisman . ◽  
Muslim .
Keyword(s):  
Water Quality ◽  
Growth Rate ◽  
Survival Rate ◽  
Specific Growth Rate ◽  
Feed Efficiency ◽  
Specific Growth ◽  
Specific Weight ◽  
Feed Consumption ◽  
Weight Growth ◽  
Randomized Design

ABSTRACT    Starved was one effort that can reduce the feed consumption and feed residues without decreasing growth of cultured fish. The purpose of this research was to determine the effect of starved periodically to the specific growth rate and feed efficiency of tilapia reared in the pond. The research had been conducted in Laboratorium Budidaya Perairan, Faculty of Agriculture, Sriwijaya Unversity on April – Juni 2016. This research method used Completely Randomized Design with four treatments and three replications that was every day feed without starvation (P0), one day feed one day starvation (P1), two days feed one day starvation (P2) and three days feed one day starvation (P3). Parameters of this research are specific growth rate, feed efficiency, survival rate and water quality (temperature, pH, DO, ammonia). The result showed that starved periodically significantly effect to the growth rate and feed efficiency of cultured tilapia in the pond. Treatment P1 (one day feed one day starvation) gave highest specific weight growth rate and specific length growth rate which were 2.32%.day-1 and 1.27%.day-1 then feed efficiency was 84.46%. The highest survival rate occurred in treatment P1 (one day feed one day starvation) 82%. Water quality of this research were temperature 27.0-31.5 oC,  pH 6.8-7.9, dissolved  oxygen 4.53-7.23 mg.L-1, and ammonia 0.01-0.30 mg.L-1. Keywords : Feed Efficiency, Specific growth rate, Starved, , Tilapia.

scholarly journals Short Communication: Antimicrobial properties in cloacal fluid of olive ridley sea turtle (Lepidochelys olivacea)

2021 ◽  
Vol 22 (9) ◽  
Author(s):  
Ratih Novita Praja ◽  
ADITYA YUDHANA ◽  
WIYANTO HADITANOJO ◽  
VIVI OKTAVIANA
Keyword(s):  
Short Communication ◽  
Antimicrobial Properties ◽  
Sea Turtle ◽  
Olive Ridley ◽  
Salmonella Spp ◽  
Lepidochelys Olivacea ◽  
Turtle Conservation ◽  
Bacillus Spp ◽  
Sea Turtle Conservation ◽  
Bacteria And Fungi

Abstract. Praja RN, Yudhana A, Haditanojo W, Oktaviana V. 2021. Short Communication: Antimicrobial properties in cloacal fluid of olive ridley sea turtle (Lepidochelys olivacea). Biodiversitas 22: 3671-3676. There were several speculations regarding the main purpose of sea turtle cloacal fluid, such as lubrication during egg deposition, which could help reduce egg speed as they are dropped in nesting sand, or contain antimicrobial properties to protect their eggs from pathogenic microorganisms. However, the exact purpose of this fluid which is mucous-like in consistency remains unknown. This study aimed to identify antimicrobial properties in the cloacal fluid of olive ridley sea turtles. Cloacal fluid samples were collected during nesting season in Banyuwangi City coastal areas, East Java Province, Indonesia. Moreover, the Kirby-Bauer diffusion disk method recorded antimicrobial properties and tested against several bacterial colonies collected from sand in natural nesting chambers. This preliminary study also concluded that antimicrobial properties were recorded when presented against several bacteria colonies from natural nesting sands namely Escherichia coli, Salmonella spp., and Bacillus spp. Furthermore, the present study should be expanded to include other bacteria and fungi colonies. In addition, results from the present study could be used to develop methods in creating antibiotics similar to those found naturally in natural nesting areas to prevent microorganism contamination and globally increase hatchling success, which has a greater impact to support sea turtle conservation efforts as endangered species.

scholarly journals Comparison of Morphological Characters of Freshwater Crayfish (Cherax quadricarinatus) from Different Ecosystems in Indonesia

2020 ◽  
Vol 20 (3) ◽  
pp. 507
Author(s):  
Bambang Widigdo ◽  
Agus Alim Hakim ◽  
Ali Mashar ◽  
Iya Purnama Sari ◽  
Yusli Wardiatno
Keyword(s):  
Growth Rate ◽  
Carapace Length ◽  
Morphological Character ◽  
Carapace Width ◽  
Morphological Characters ◽  
Habitat Characteristics ◽  
Freshwater Crayfish ◽  
Cherax Quadricarinatus ◽  
River Waters ◽  
Rivers And Lakes

Freshwater crayfish (Cherax quadricarinatus) as an invasive species has high capability to adapt in most waters in Indonesia. The extant distribution of this species in Indonesia causes observation of morphological characters  is important to be established. This study purpose is to compare the morphological characters of Cherax quadricarinatus from several locations in Indonesia waters, such as the river in Bintan Island, Toba Lake, and Lido Lake. The total of morphological characters was measured in twenty-two characters. The result of the Kruskal-Wallis test represented nine different characters between Toba, Bintan, and Lido. Cluster analysis illustrated the highest level of similarities between Toba and Lido. The growth rate of the dactyls, and carapace width, and ocular carapace length between Toba and Lido were similar, meanwhile between Toba and Bintan were different. C. quadricarinatus originating from river waters in Bintan Island has a different morphological character from Lake Lido and Lake Toba. The differences in morphological characters between locations are caused by differences in habitat characteristics in rivers and lakes.

Sign in / Sign up

Export Citation Format

Share Document