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All Journal JOURNAL OF COASTAL DEVELOPMENT Aquasains : Jurnal Ilmu Perikanan dan Sumberdaya Perairan e-Jurnal Rekayasa dan Teknologi Budidaya Perairan
Moh. Muhaemin
Aquaculture Department, Agriculture Faculty, University of Lampung, Indonesia
Computer Science & IT Earth & Planetary Sciences Education Other

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Journal : Aquasains : Jurnal Ilmu Perikanan dan Sumberdaya Perairan

 1 
EFFECTIVITY OF LIGHT INTENSITY ON COLOR GRADATION AND CAROTENOIDS CONTENT OF Lobophyllia hemprichii Ahmad Mustawa; Esti Harpeni; Moh. Muhaemin
AQUASAINS Vol 5, No 2 (2017)
Publisher : Jurusan Perikanan dan Kelautan

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Abstract

L. hemprichii is one of the marine ecosystems with high biodiversity and the most productive. The more healthy corals, the higher productivity in the sea. The existence of light is needed for L. hemprichii for its growth. Moreover L. hemprichii has color that produced by symbiotic algae pigments such as carotenoid pigments. Carotenoid pigment has active role to absorb light in process of photosynthetic of algae symbionts. The aims of this study were to gain different effects of  light intensity to color gradation of red and carotenoids content of L. hemprichii. The study was conducted by placing L. hemprichii into aquriums with ICR treatment (Low Light Intensity = 1514 Lux), ICS treatment (Medium Light Intensity = 3028 Lux), treatment ICR (High Light Intensity = 4547 Lux). The results showed that the light intensity affect the color gradation of  coral L. hemprichii and light intensity affect the concentration of total carotenoid pigment L. hempirchii. The best light intensity for L. hempirchii color and carotenoid pigment production was high light intensity (4547 Lux).
EFFECT OF LIGHT INTENSITY ON THE CELL DENSITY, DIAMETER AND CELL VOLUME ZOOXANTHELLAE FROM ISOLATE SOFTCORAL Zoanthus sp Suliswati Suliswati; Esti Harpeni; Moh. Muhaemin
AQUASAINS Vol 5, No 1 (2016)
Publisher : Jurusan Perikanan dan Kelautan

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Abstract

Coral reefs are one of the aquatic ecosystem trophic productive for aquatic organisms. Coral reefs can not be separated from the various threat of causing damage. Physiological damage that is visible coral bleaching. Bleaching of coral reefs due to causes it may be the biggest threat to coral ecosystems due to widespread in various regions. Coral bleaching causing the loss of endosymbiont coral or reduction of photosynthetic pigments zooxanthellae of corals. Zooxanthellae need light for photosynthesis. The process will produce energy which serves for the biosynthesis cell, growth and cell division. Therefore light plays an important role in the process of photosynthesis. This research aims were to know the cell density, diameter and volume zooxanthellae cells on different light intensity. The research was conducted on July-August 2016, in the Aquaculture Laboratory, Program Study of Aquaculture Faculty of Agriculture University of Lampung. Observed parameters were the density, diameter and volume zooxanthellae cells. Research used the 4 treatments and 5 replications namely 3800 lux (IC1), 6250 lux (IC2), 7980 lux (IC3), and 11800 lux (IC4). Measurement of the density and diameter of zooxanthellae cells used a hemocytometer neubauer improved and objective micrometer (0.01 mm). Data were analyzed by analysis of variance (ANOVA) and followed by LSD test. The results showed that the intensity of light significantly affected the density, diameter and volume zooxanthellae cells. Intensity light given by zooxanthellae responded with increased density and a decrease the diameter and volume zooxanthellae cells in the early stages of culture (0-18 hours).
Co-Authors Ahmad Mustawa Esti Harpeni Nindri Yarti Siti Hudaidah Suliswati Suliswati