Judul: Exploration of Parasites Nile Tilapia (Oreochromis niloticus) from The Local Fish Seller in Dramaga, Bogor
Abstrak: Besarnya komoditas perikanan ikan nila secara nasional terus mengalami peningkatan. Namun, dalam usaha budidaya ikan ini berbagai kendala ditemui, salah satunya adalah penyakit yang disebabkan oleh parasit. Penelitian ini bertujuan untuk mengidentifikasi parasit yang ada pada ikan nila (Oreochromis niloticus) dari toko penjual ikan di Dramaga, Bogor, Jawa Barat. Sampel ikan nila diambil sebanyak 14 ekor dengan rata-rata panjang ± 22 cm dan bobot tubuh ± 195 gram. Sampel diambil dari insang, sirip dada, sirip anal, sirip caudal, sirip dorsal, sisik, dan usus ikan. Sampel diperiksa dengan metode natif. Sampel dari usus dilakukan pewarnaan Ziehl Neelsen. Sampel darah ikan diambil untuk dilakukan ulas darah dan diberi pewarnaan Giemsa. Berdasarkan hasil pengamatan, ditemukan parasit Trichodina sp. sebanyak 85,71% (n=14) dengan intensitas 27,83 individu/ekor dan insang sebagai organ yang paling banyak terinfeksi. Tingkat infeksi parasit yang ditemukan dengan pewarnaan Ziehl Neelsen adalah Myxobolus sp. (57,14%), Cryptosporidium spp. (35,71%), dan Cyclospora sp. (14,29%). Sedangkan, tingkat infeksi parasit darah yang ditemukan yaitu Haemogregarina sp. (50%). Informasi mengenai keberadaan parasit pada ikan nila ini menjadi sangat penting diketahui bagi pembudidaya untuk mengendalikan parasit secara tepat dan efektif., The demand for tilapia fishing goods has recently expanded on a national scale. One of the difficulties this fish farming operation encountered was the parasite-caused illness. The aims of this study were to explore parasites in tilapia (Oreochromis niloticus) from the local fish seller in Dramaga, Bogor, West Java. A total of 14 tilapia were sampled, with an average length of 22 cm and a body weight of 195 grams. Fish gills, pectoral fins, caudal fins, tail fins, dorsal fins, scales, and intestines were collected. The methods used in this study were wet mount examination, gut samples were stained with Ziehl Neelsen, and blood samples from fish were obtained and stained with Giemsa for analysis. The findings revealed that Trichodina sp. (85.71 percent) was present in several organs, with the gills being the most heavily affected organ. The intensity of this parasite was 27.83 individuals/head. The parasites detected by Ziehl Neelsen staining were Myxobolus sp. (57.14 %), Cryptosporidium spp. (35.71 %), and Cyclospora sp. (14.29%). The type of blood parasite found was identified as Hemogregarina sp (50%). Our findings are very important information for initiating the development of a treatment strategy to prevent parasite infection in tilapia fish farms.
Keyword: Oreochromis niloticus, parasit darah, parasit saluran pencernaan, tingkat infeksi

Judul: Keberadaan Cacing Parasitik dan Bakteri pada Insang serta Saluran Pencernaan Ikan Nila Bogor Enhanced Strain Tilapia (Oreochromis niloticus)
Abstrak: This study aimed to identify the type of a parasitic worms and bacteria in gills and digestive tract of Bogor Enhanced Strain Tilapia Fish (Oreochromis niloticus) by conventional methods. A group of 10 fishes of sample BEST tilapia were used, each gills and digestive tract was collected. The parasitic worms were colored with KOH and clove oil for nematode worm, and Semichon’s Acetocarmine staining for trematode worms. Differentiations and characterizations of variants isolate were based on biochemical reactions and Gram staining technique. Parasitic worms that can be identified from gills were Dactylogyrus sp. and Pseudodactylogyrus sp., while parasitic worm from digestive tract was Anisakis sp. The bacteria result shows that the gills and digestive tract of BEST tilapia were predominantly contaminated with Aeromonas sp. and followed by Staphylococcus epidermidis and Streptococcus sp.
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Judul: Pelabelan Super Vertex Magic
Abstrak: Super vertex magic labeling is labeling on graph with is a set of edges mapped into and is a set of vertices mapped into . It has a vertex magic labeling in which and represents the size and order of the graph respectively. This manuscript proves that paths, cyclics, and disjoint union of cyclics have a super vertex magic labeling. There are four theorems to be discussed. The first theorem proves that path is super vertex magic if and only if is odd and . The second theorem proves that cyclic is super vertex magic if and only if is odd. The third theorem proves that bijection function from an edge set onto of graph can be extended to a super vertex magic labeling if and only if the set amount of edge label that incidents with a vertex in the graph, consists of sequential integers as many as vertices in the graph. The fourth theorem proves that disjoint union of the cyclics consists of cyclics with each cyclic has vertices is super vertex magic if and only if and are odd.
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