Judul: Ekologi Peneluran dan Intensitas Pemanfaatan Labi-labi Moncong Babi (Carettochelys insculpta Ramsay 1886) Di Sungai Vriendschap Kabupaten Asmat, Papua
Abstrak: Carettochelys insculpta (pig-nosed turtle) is one of the soft shelled turtle of southern Papua. Land clearing for human development and high hunting of natural resource affect the condition of forest ecosystems and put pressure on pig-nosed turtle population, while the scientific information in Indonesia is still lacking. In effort to obtain information of pig-nosed turtle in Indonesia, the study was conducted to determine the nesting ecology and intensity utilization of pig-nosed turtle in Vriendschap River Asmat Regency, Papua. Survey was carried out in 8 – 25 November 2011 during nesting season. Transect methods were used to get data on nesting ecology, while unstructured interview and observation techniques be used to assess the intensity of pig-nosed turtle utilization by communities living around the Vriendschap River, Asmat regency, Papua. Results showed that distribution pattern of nests and tracks in Vriendschap River region is clumped with most nesting sites located in Obokain area (the middle of the Vriendschap River). High density of nests were built near vegetation cover compared to area without vegetation. Females prefer sands with the presence of vegetation cover for nesting habitat. The intensity of utilization is very high for eggs (> 75%), whereas females turtles were captured only local consumption. Egg harvesting is done for the whole nest without exception and females turtles were captured simultaneously while collecting eggs.
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Judul: Pemeliharaan Labi-labi (Amyda cartilagínea Boddaert, 1770) dan Uji Coba Preferensi Pakan Anakan di Penangkaran PT. Ekanindya Karsa, Kabupaten Serang
Abstrak: Softshell turtle (Amyda cartilaginea Boddaert, 1770) is categorized as Appendix II CITES and vulnerable in IUCN Red List Data Book. Captive breeding of this turtle is important to continue their sustainable utilization. PT Ekanindya Karsa was one of the pioneer in captive breeding of this species since 2008. Until now, there reference related to management and maintenance techniques of softshell turtle in captivity are few. This research aims to asess the characteristics of softshell turtle in captivity, document the management and maintenance techniques and analyse feeding preferences especially juveniles. The results will assist wildlife conservation efforts and improve it for the future. Research was carried out at PT. Ekanindya Karsa from July to October 2012. Data collected includes characteristics of shoftshell turtle, which consists morphometry and morphological of shoftshell turtle, maintenance of turtle in captivity and foods preference of juveniles. Nine adult shoftshell turtle (3 males and 6 females), 25 shoftshell turtle eggs, and 45 juveniles between 1 - 3 months were observed. Food tested comprises of tuna, shrimp, spinach and sweet potatoes which are given to 15 juveniles. Level of food intake, growth, cost efficiency and activity of juveniles were measured to assess ideal feeding time with focal animal sampling methods. Mean curved-carapace length of an adults (CCL) is 43.33 cm, curved-carapace wide (CCW) 35.33 cm and body weight 10.11 kg. Juvenil non test consists of three clutches with range of CCL is 4.21 - 4.68 cm; CCM is 3.68 - 4.24 cm and body weights of 9.95 – 12.59 g during hatching. Softshell turtle’s eggs had range of diameter of 2.84 - 3.95 cm and weight of 12.00 - 24.00 grams. Maintenance of turtle in captivity is quite well includes aspects of habitat maintenance, management of food and handling of eggs. However, diseases management has not been handled correctly in the captivity as shown by some untreated diseased adult. Preferred food of 15 juveniles were sweet potato and tuna. Feeding activities were visible in the morning (7.00 – 10.00 am) and evening (7.00 – 10.00 pm).
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Judul: Construction of Strongly Optimal Binary Linear Code with Minimum Distance 9 and 11
Abstrak: A binary linear code of length n over q F is a subspace of n q F . A code has three parameters that attached to it, namely length, dimension, and minimum distance. A code with length n, dimension k and minimum distance d is often called [n, k, d ]-code. Usually, when two parameters are given, then we want to find a code that has the best value for the last parameter. Based on Gilbert- Varshamov bound, if a [n, k, d ]-code exists and can not be expanded, we call it a strongly optimal code. In this paper, we construct strongly optimal code with minimum distance 9 and 11. In constructing the code, we created a theorem and algorithm based on Gilbert-Varshamov bound before we implement the algorithm to MAPLE programming language. Because of computational limitations, the program can only construct up to k = 10 for d = 9 and k = 12 for d = 11.
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