ECTOPARASITES AND VIBRIOS ASSOCIATED WITH FATTENING CULTURED MUD CRABS [Scylla serrata (Forsskal, 1775)] FROM PEMALANG COAST, INDONESIA

Abstract

Infectious of ectoparasites and vibrios were found as a problem in fattening mud crab. The aims of this study were to determine the clinical sign of infected mud crabs and to identify the ectoparasites and generic vibrio in the fattening mud crabs from Pemalang Coast, Indonesia. Ectoparasites were collected by smear method. Whereas, 20 isolates were collected from hepatopancreas, gills, hemolymph and injured carapace of the mud crabs. Thiosulphate Citrate Bile Salt Sucrose (TCBS) medium was used to isolate suspected vibrios. The clinical signs of mud crabs infected by ectoparasites were shown through the damaged gills and the attachment of other organisms on the gills, whereas the clinical signs of mud crabs infected by vibriosis were shown through red spot on carapace and wound in carapace, claw and abdomen, followed by weak condition. It also indicated that seven ectoparasites were Ichthyobodo sp., Epistylis sp., Carchesium sp., Vorticela sp., Octolasmis sp., Lepeophtherius sp, and Copepodit sp., whilst five Vibrios were V. harveyi, V. Cholerae, V. parahaemolyticus, V. alginolyticus and V. fischeri.

INVENTARISASI EKTOPARASIT PADA KEPITING BAKAU (Scylla serrata) YANG DIBUDIDAYAKAN DI DESA GAMPONG BLANG KOTA BANDA ACEH

“…Kepiting bakau yang terserang ektoparasit biasanya memiliki ciri fisik yang tidak normal seperti adanya organisme yang menempel pada organ tubuh (Sarjito et al, 2016) dan warna organ seperti insang akan berubah menjadi pucat bahkan kehitaman (Wardhani et al, 2018;Darwis, 2006). Selain adanya perubahan fisik tersebut, kepiting juga mengalami beberapa masalah dalam bernapas, bergerak dan mencari makan (Suherman, 2013) serangan ektoparasit menurut Williams dan Williams (1996) (Tabel 1 dan Tabel 2).…”

Identifikasi Bakteri Vibrio pada Sedimen Mangrove di Sekitar Tambak Udang Vaname

“…Berdasarkan penelitian oleh Dias et al, (2009) ditemukan ada 3 kelompok ordo bakteri pada sedimen mangrove, yaitu Actinomycetales, Bacillales, dan Vibrionales. Sarjito et al, (2014) menyatakan bahwa penelitian mengenai identifikasi agensia penyebab vibriosis penting untuk dilakukan dalam rangka memperoleh kepastian dan terapi yang tepat untuk merancang strategi pencegahan penyakit dan mendukung produksi. Pemerintah melalui Keputusan Menteri Kelautan dan Perikanan Republik Indonesia Nomor 52 Tahun 2014 mengizinkan penggunaan beberapa obat keras sebagai antibiotik untuk pengobatan terhadap penyakit yang menyerang pada kegiatan budidaya.…”

Pathology Anatomy and Hemolymph Profile of Spiny Lobster (Panulirus homarus) Infested by Octolasmis sp. on Bottom Cage

“…is one of the crustacean parasites that infest lobsters. According to Sarjito et al (2016), the impact of ectoparasite infestation on crustaceans can cause organs to be damaged. The appearance of damage in an organism's body can cause disturbances in the lobster growth process and a decrease in the host's immune system, making it easier for bacteria and viruses to cause secondary infections (Darwis, 2016).…”

“…are characterized by the attachment of organisms in the form of white sprouts, melanization of the gills, and the presence of fibers at the base of the carapace. Damage in the form of gill alterations leads the spiny lobster to have difficulties breathing (Sarjito et al, 2016;Herlinawati et al, 2017;Rokhmani and Bambang, 2020).…”