Aceh Journal of Animal Science
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Spectral analysis using Haar wavelet (original signal, denoised signal, residual signal) and source level (SL) for whistle sound of dolphin (Tursiops aduncus) in captivity
Full text linkThis study discussed about Haar wavelet with a view original signal, denoised signal, and residual signal with using fourth whistle sounds of dolphin (Tursiops aduncus). The study was conducted in Safari Park, Cisarua, Bogor Indonesia with 2 dolphins. The results showed differences in results Haar wavelet, this study proves that the Haar wavelet is suitable for the analysis of dolphin sounds, and its have frequency ranged 8-22 kHz. The highest value of the noised signal was smaller than residual signal. The highest of residual signal contained in the second whistle, while the lowest was whistle 1, it showed that the larger the signal denoised result residual signal generated using Haar wavelet. The frequency of source level value ranged 8500 Hz to 11800 Hz, with the highest SL value was 43.9 dB (brown cyrcle). The lowest of the frequency of Source Level (SL) value ranged between 15700 Hz to 17990 Hz, with the lowest SL value was 38.5 dB (brown cyrcle). Whistle 1, 2, 3, and 4 have a different value SL and every SL values obtained in 1,2,3, and 4 have differences noise, it shows the same target but SL value and the sound patterns remain distinct by looking at time duration of whistle sound. Beam pattern from an omni directional sound source (DI= 0 dB, cyan trace) and a directional source following the piston model (DI= 18 dB, black trace) and beam pattern with 4 types signal have ranged value 70 -180, with highest intensity value was 60
Close genetic connectivity of soft coral Sarcophyton trocheliophorum in Indonesia and its implication for marine protected area
Full text linkThe genetic connectivity of soft coral is influenced by current and distance between islands. The complexity of islands and geographical region in Indonesia might influence the distribution of soft corals. The information of genetic connectivity can be used to design marine protected areas and to avoid destruction and possible extinction. The objective of the present study was to analyze genetic connectivity of one species of soft coral, Sarcophyton trocheliophorum, in three populations spanning Java, Nusa Tenggara, and Sulawesis waters, and to describe its implication for marine protected area. The mitochondrial protein-coding gene (750 bp of ND2) was used to analyze genetic population structure and genetic connectivity. Genetic connectivity was found in all populations with Fst value of 0.227 to 0.558, indicating populations had the close genetic relationship. The local and Indonesian currents were expected to distribute the larva to islands as a stepping stone, they moved slowly to spread them self far away. Tanakeke island (Sulawesi population) might be a center connectivity of S. trocheliophorum populations. This island connected with islands in west and east Indonesia, therefore that area need to protec
Preliminary study on diminution level of RNA/DNA ratio in tissue of Labeo rohita by exposure to some endocrine disrupting compounds (EDCs)
Full text linkEffects of EDCs particularly on RNA/DNA ratio are yet to be investigated to manage the effluents in natural waters. We investigated exposure effects of endocrine disrupting compounds (EDCs) phthalic acid ester (PAE) and hexachlorocyclohexane (HCH) on the RNA/DNA ratio in tissue of an Indian major carp Labeo rohita. Fish were exposed to pre-determined sublethal concentrations of phthalic acid ester (Di-methyl phthalate (DMP), di-butyl phthalate (DBP), and di-(2- ethylhexyl) phthalate (DEHP) and also HCH for determining the tissue RNA/DNA ratio after 30, 60 and 90 days of exposure in the doses of 0.2 mg L-1, 0.3 mg L-1, and 0.5 mg L-1 respectively. All these tested chemicals significantly (P0.05) inhibited RNA/DNA ratio. The ratio gradually significantly (P0.05) decreased after DEHP where it was 1.90.51 F1, 18=15.8 P=0.014 n=19; in case of DBP it was 1.920.62 F1, 20=6.5 P=0.012 n=19 and for HCH it was 0.940.21 F1, 18=18.08 P=0.0012 n=19 at treatments concentrations of 0.3 mg L-1 and 0.5 mg L-1, compared to control (2.90.2) after 90 days. However, there was no statistical significance (P0.05) in RNA/DNA ratio after the DMP (F1, 20=2.4 P=0.15n=21) treatment
Water consumption rate of konkan kanyal goats (Capra hircus) fed finger millet straw supplemented with varying levels of dried poultry dropping based diets
Full text linkThis study was conducted to estimate the water intake of konkan kanyal goats fed finger millet straw supplemented with varying levels of dried poultry droppings based diet. Thirty konkan kanyal goats aged above 12 months weighing 14.00-14.67 Kg were used in a randomized block design (RBD) experiment. The experimental goats were randomly assigned to five treatments (TI-T5). T1 were goats fed with 0 % dried poultry droppings based diets (DPDBD), T2 were fed with 20 % dried poultry droppings based diets (DPDBD), T3 were fed with 40 % dried poultry droppings based diets (DPDBD), T4 were fed with 60 % dried poultry droppings based diets (DPDBD), T5 were fed with 80 % dried poultry droppings based diets (DPDBD. Water was offered at 5 L per goats daily. Water and feed refusal were recorded on a daily basis before feeding in the morning. Feed and feaces samples were analyzed for proximate constituents. Live weight changes were also measured. Results revealed that treatment groups supplemented with dried poultry droppings based diets had superior water intake compared to the control group. Daily water intake of the experimental goats was 1.4, 2.2, 3.5, 2.7, and 1.7 L per head, respectively. Konkan kanyal goats fed finger millet straw supplemented with varying levels of dried poultry dropping based diets requires up to 3.5 L of water per head per day for optimum utilization of the feed
Inshore migration of tropical glass eels (Anguilla spp.) in Lambeso River, Aceh Jaya District, Aceh Province, Indonesia
Full text linkThe objective of the present study was to evaluate the migration time of glass eels (Anguilla spp.) in the estuary of Lambeuso River, Aceh Jaya District, Indonesia. The survey was done in March and June 2015. The sampling location was determined based on an initial survey during February 2015 by considering the river condition. Based on initial survey there are no glass eels were recorded during noon time, and therefore the sampling was focused at night. The sampling was done four times a month (weekly basis) for three months (12 times in total) using trap nets based on Hijri Calendar. The trap was settled up to opposite direction of tide (seaward) from 18.00 PM to 06.00 AM and the catches glass eels were monitoring one-hour interval. A total of 131 glass eels were sampled during the study, where the samples were only caught on first (new month) and fourth week (old month) base on Hijri Calender during spring tide and no glass eels were sampled during second and third weeks. It was concluded that the migration time of the glass eels (Anguilla spp.) in Lambeso Rivers is during the dark moon at the new and old month of Hijri Calenda