Crustaceous wastes as growth substrates for insect-pathogenic fungus Metarhizium majus UICC 295

A. Oetari, N. A. Khodijah, O. Sumandari, C. K. Wijaya, G. S. Yama, W. Sjamsuridzal

Research output: Contribution to journalConference articlepeer-review

Abstract

The genus Metarhizium consists of a diverse group of species, which have a global distribution and a wide range of insect hosts. Metarhizium majus was reported to inflict 100 % mortality on Oryctes rhinoceros beetle. Feeding activity of the O. rhinoceros beetle causes major crop loss in many coconut and palm oil plantations. This study investigated the use of crustaceous wastes and colloidal chitin as substrates for Metarhizium majus UICC 295 and the fungal virulence on O. rhinoceros larvae. Morphology of M. majus was observed on Sabouraud Dextrose Agar with Yeast Extract (SDAY) added with 5, 10, and 15 % (w/v) powder prepared from crab shell, green mussel shell, shrimp shell, or colloidal chitin and without addition as control. Fungal cultures in 10 % (w/v) crustaceous wastes or colloidal chitin were selected and virulence of M. majus UICC 295 was assayed by dripping the larvae with cell suspension. Untreated larvae were dripped with sterile distilled water and served as control. Mortality was recorded daily for 15 days. Fungal culture prepared from powder of colloidal chitin, green mussel shell and crab shell inflicted 100 % larval mortality in 10, 12, and 13 days, respectively, compared to fungal culture prepared from SDAY in 11 days.

Original languageEnglish
Article number012016
JournalIOP Conference Series: Earth and Environmental Science
Volume483
Issue number1
DOIs
Publication statusPublished - 12 Jun 2020
Event4th International Symposium on Green Technology for Value Chains 2019, GreenVC 2019 - Tangerang, Indonesia
Duration: 23 Oct 201924 Oct 2019

Keywords

  • crustaceous waste
  • Metarhizium majus
  • Oryctes rhinoceros

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