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All Journal JURNAL ILMU HEWANI TROPIKA (JOURNAL OF TROPICAL ANIMAL SCIENCE)
Bambang Sulistiyarto
Universitas Kristen Palangka Raya
Veterinary

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Journal : JURNAL ILMU HEWANI TROPIKA (JOURNAL OF TROPICAL ANIMAL SCIENCE)

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Model regresi antara jumlah massa telur dengan kepadatan populasi larva Chironomidae (Diptera) : Percobaan laboratorium Bambang Sulistiyarto
JURNAL ILMU HEWANI TROPIKA (JOURNAL OF TROPICAL ANIMAL SCIENCE) Vol 6, No 1 (2017): Juni 2017
Publisher : Fakultas Peternakan Universitas Kristen Palangka Raya

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Abstract

This study aims to determine the relationship between the number of egg masses laid by their brood and the population density of Chironomidae larvae in waters. The laboratory experiment was carried out by spreading Chironomidae egg masses with 4 density levels and 3 replications: (A) 3 egg masses / container (B) 6 egg masses / container (C) 9 egg masses / container and (D) 12 egg masses /container. Chironomidae larvae population counted after 8 days of maintenance. Based on this study, population densities of Chironomidae larvae ranged from 2576 to 5817 individuals / m2 with body lengths ranging from 9.067 to 14.265 mm. Increasing the number of egg masses were laid, will decrease the density of larval Chironomidae follow cubic regression model Y = 18287 - 443.6 X + 4.015 X2 - 0.01143 X3
Kandungan logam seng (Zn) pada Rasau (Pandanus helicopus) dan Bakung Air (Hanguana malayana) di Sungai Sebangau, Kalimantan Tengah Bambang Sulistiyarto
JURNAL ILMU HEWANI TROPIKA (JOURNAL OF TROPICAL ANIMAL SCIENCE) Vol 8, No 1 (2019): Juni 2019
Publisher : Fakultas Peternakan Universitas Kristen Palangka Raya

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Abstract

This study aims to determine the zinc (Zn) content in Rasau (Pandanus helicopus) and Bakung air (Hanguana malayana) which are the dominant water plants in the Sebangau river. The study was carried out by taking samples of roots and leaves of Rasau and Bakung air in 3 different locations. The Zn content in the sample was measured using the AAS method (Atomic Absorption Spectrophotometer. The results showed that the average Zn content of Rasau in roots was 4.40 mg / Kg and in leaves 2.10 mg / Kg. Zn content of Bakung air in roots 95.39 mg / Kg and in leaves 14.44 mg / Kg. Zn metal transfer factor in Rasau 0.467 and in Bakung air 0.152. Bakung air play a role as Zn metal accumulator plants in river waters. Key words : Zinc (Zn), Pandanus helicopus, Hanguana malayana, Sebangau river.
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