Pengaruh Warna Lampu LED Terhadap Tingkat Infeksi Ektoparasit Pada Lobster Air Tawar (Cherax quadricarinatus)

Wibowo, Nadya Azzahra (2025) Pengaruh Warna Lampu LED Terhadap Tingkat Infeksi Ektoparasit Pada Lobster Air Tawar (Cherax quadricarinatus). Other thesis, Institut Teknologi Sepuluh Nopember.

Text 5005211088-Undergraduate_Thesis.pdf - Accepted Version Restricted to Repository staff only Download (27MB) | Request a copy

Abstract

Lobster air tawar (Cherax quadricarinatus) merupakan komoditas akuakultur bernilai tinggi namun rentan terhadap infeksi ektoparasit yang dapat menyebabkan stres, penurunan sistem imun, hingga kematian. Penelitian ini bertujuan untuk mengevaluasi pengaruh warna cahaya LED (putih, merah, biru, hortisolis) dan tanpa cahaya terhadap prevalensi serta intensitas ektoparasit pada lobster air tawar. Juvenil lobster (±4–5 gram) dipelihara pada suhu 28°C dengan fotoperiode 12L:12D. Ektoparasit diamati menggunakan metode scrapping dan diidentifikasi secara mikroskopis. Empat jenis ektoparasit berhasil diidentifikasi, yaitu Epistylis sp., Oodinium sp., Trichodina sp., dan Zoothamnium sp. Prevalensi ektoparasit pada Cherax quadricarinatus bervariasi antara 10% – 80%, dengan sebagian besar termasuk dalam kategori infeksi biasa (30-49%). Nilai rata-rata intensitas dari infeksi ektoparasit per individu yang paling tinggi ditemukan pada perlakuan lampu putih, dengan nilai sebesar 6,2 ind/ekor, kemudian diikuti oleh lampu hortisolis sebesar 4,2 ind/ekor, perlakuan tanpa pencahayaan (kontrol) sebesar 4,1 ind/ekor, lampu biru 3,6 ind/ekor, dan nilai terendah pada perlakuan lampu merah, yaitu sebesar 1,9 ind/ekor. Cahaya putih yang memancarkan spektrum penuh diduga menciptakan kondisi lingkungan yang mendukung bagi aktivitas ektoparasit. Perlakuan dengan cahaya merah dan biru menghasilkan prevalensi dan intensitas yang lebih rendah, menunjukkan efek penekanan terhadap infeksi parasit. Pada perlakuan cahaya merah lebih banyak ditemukan rotifera yang membuka kemungkinan terjadinya kompetisi ekologis tidak langsung antara rotifera dan ektoparasit. Tidak semua jenis ektoparasit terdeteksi di setiap perlakuan, yang mengindikasikan adanya pengaruh spektrum cahaya terhadap keberadaan spesies tertentu.
=======================================================================================================================================
The red claw crayfish (Cherax quadricarinatus) is a high-value aquaculture commodity but is vulnerable to ectoparasitic infections, which can lead to stress, immune suppression, and mortality. This study aimed to evaluate the effects of different LED light colors (white, red, blue, hortisolis) and darkness on the prevalence and intensity of ectoparasites in C. quadricarinatus. Juvenile crayfish (±4–5 g) were reared at 28 °C under a 12L:12D photoperiod. Ectoparasites were observed using the scrapping method and microscopically identified. Four ectoparasite species were identified: Epistylis sp., Oodinium sp., Trichodina sp., and Zoothamnium sp. The prevalence of ectoparasites in C. quadricarinatus ranged from 10% to 80%, with most infections classified as moderate (30–49%). The highest average intensity of ectoparasite infection per individual was recorded in the white LED treatment at 6.2 ind/individual, followed by hortisolis LED (4.2 ind/individual), no light (control) (4.1 ind/individual), blue-light LED (3.6 ind/individual), and the lowest in red-light LED at 1.9 ind/individual. White light, which emits a full spectrum, is thought to create environmental conditions favorable for ectoparasite activity. In contrast, the red and blue light treatments resulted in lower prevalence and intensity, suggesting a suppressive effect on parasite infection. Notably, rotifers were more frequently found in the red-light treatment, suggesting possible indirect ecological competition between rotifers and ectoparasites. Furthermore, not all ectoparasite species were detected in each treatment, suggesting that light spectrum may influence the presence of certain parasite species.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Cherax quadricarinatus, Ektoparasit, LED, Intensitas, Prevalensi. Cherax quadricarinatus, Ectoparasites, LED, Intensity, Prevalence
Subjects:	Q Science Q Science > QH Biology Q Science > QL Zoology Q Science > QL Zoology > QL435.A3 Crustacea
Divisions:	Faculty of Natural Science > Biology > 46201-(S1) Undergraduate Thesis
Depositing User:	Nadya Azzahra Wibowo
Date Deposited:	29 Jul 2025 03:38
Last Modified:	29 Jul 2025 03:38
URI:	http://repository.its.ac.id/id/eprint/122542

Actions (login required)

View Item