This Study attempts to identify the types of macroscopic fungi found in Langsa City Protected Forest area. The research area is ± 10 Ha. Exploration of high level mushroom species using the roaming observation method, namely making direct observations to the research location. Data analysis was carried out descriptively. The results of this study were found as many as 22 spesies of macroscopic fungi. Fungi that are found are abundant in soil and tree litter or rotten wood. The result of this study are expected to provide preliminary information about the diversity oh high level fungi that can grow in protected forest area in Langsa City.
This has an impact on the emergence of disease-causing pathogens, one of which is protozoa ectoparasites which leads to adecrease in production. Litopenaeus vannamei sample was taken using random sampling method. The purpose of this study was to determine the type of protozoa ectoparasite in vannamei shrimp (Litopenaeus vannamei) which were senn during identification including gills, carapace, swimming legs, walking legs and tail. The results of the identification there are 6 types of protozoan ectoparasites that infect Litopenaeus vannamei found in the Kuala Langsa intensive pond, namely Vorticella, Epystylis, Zoothamnium, Trichodina , Ichthyophirius and Oodinium. The highest prevalence is Zoothamnium, which is 30%, so it falls into the general category. Measurement of physical and chemical parameters of water in intensive ponds in Kuala langsa in the form of temperature and value 28,1-30,4oC, DO 4,6-5,9, pH 6,9-7,5 and salinity with value 15 ppt.
Ikan lele sangkuriang (Clarias gariepinus) merupakan sumber protein hewani yang banyak dikonsumsi masyarakat. Meningkatnya permintaan pasar membuat kegiatan budidaya ikan lele semakin luas apalagi budidaya ikan lele sangkuriang terbilang mudah. Salah satu kendala yang mendasar dalam kegagalan panen budidaya ikan lele sangkuriang adalah serangan ektoparasit patogen yang bersifat infeksius berarti serangan dari Protozoa, Platyhelminthes, Arthropoda dan non infeksius artinya ikan yang stress akibat buruknya kualitas perairan budidaya. Penelitian ini menggunakan metode Purposuve Sampling dan bertujuan untuk menghitung angka prevalensi dan dominansi dari ektoparasit yang menyerang ikan lele sangkuriang serta mengidentifikasi spesies ektoparasit yang ditemukan. Ektoparasit yang paling banyak ditemukan berasal dari Filum Protozoa sebanyak 5 genus yaitu, Trichodina sp, Ichtyophtyris sp, Epistylis sp, Chilodenella sp, dan Oodinium sp. Ektoparasit yang ditemukan berasal dari filum Platyhelminthes ada 2 Genus yaitu, Dactylogyrus sp dan Gyrodactylus sp dan ektoparasit dari filum Arthropoda ditemukan 1 Genus yaitu Argulus sp. Dominansi tertinggi ditemukan pada ektoparasit jenis Oodinium sp yaitu dengan dominansi sebanyak 26,31%, ektoparasit Trichodina sp memiliki nilai dominasi sebanyak 17,54% dan ektoparasit Dactylogyrus sp sebanyak 15,78%. Prevalensi tertinggi disebabkan oleh ektoparasit Trichodina sp, Ichthyophthyrius sp, Oodinium sp memiliki nilai prevalensi 80-100 % nilai prevalensi ini termasuk kedalam kategori infeksi sering atau sangat parah. Ektoparasit Gyrodactylus sp dan Chilodenella sp memiliki nilai prevalensi 60 % dan 70 % masuk ke kategori infeksi sedang. Epistylis sp dan Argulus sp memiliki nilai prevalensi 20 % termasuk kedalam kategori sering.
From a biological point of view, plant diseases are deviations from internal traits that cause plants to not be able to carry out normal growth activities. Plant diseases in the field can be identified based on signs and symptoms of diseases that appear. This study aims to determine how to diagnose macroscopically the symptoms of diseases that arise due to pathogenic microorganisms on plants. This research was conducted in 3 stages which included the location survey, observation, and primary data collection stages. The method for primary data collection is done by direct observation, namely direct observation of samples and documented. Data were analyzed using the formula to calculate the percentage and intensity of disease attacks on plants. The results obtained were as many as 3 plant species (Capsicum sp, Solanum escelentum, Oryza sativa) from 12 plants which were observed to be attacked by pathogenic microorganisms with a percentage amount (22,45 %, 58,97%, 9%). Obtain 4 types of pathogenic microorganisms that attack plants, namely Gemini virus that causes leaf curling in Capsicum sp plant, Pyricularia oryzae fungus which causes leaf blast in Oryza sativa plants, the fungus Alternaria solani causes dry spot and Rhizoctonia solani fungus which causes leaf blast in Oryza sativa plants, the fungus Alternaria solani causes leaf dry spot and Rhizoctonia solani fungi that cause fruit rot in Solanum escelentum.
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