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"Badan Tenaga Nuklir Nasional (BATAN) telah merencanakan pembangunan Reaktor Daya Eksperimental (RDE). Dalam pengoperasiannya akan terjadi pelepasan radionuklida ke lingkungan, salah satunya adalah 137Cs. Untuk itu diperlukan bioindikator untuk mengidentifikasi adanya pencemaran 137Cs. Kinetika proses bioakumulasi 137Cs melalui jalur air laut pada kerang hijau (Perna viridis) dan udang mantis (Harpiosquilla raphidea) dari Teluk Jakarta telah diteliti dengan mengamati pengaruh variasi bobot biota. Eksperimen akuaria dilakukan terhadap empat kelompok ukuran dengan dua kali pengulangan. Percobaan dilakukan melalui 3 tahapan, yaitu akumulasi/pengambilan, depurasi/pelepasan serta pemodelannya. Hasil penelitian menunjukkan kenaikan bobot biota menurunkan laju pengambilan dan laju pelepasan 137Cs oleh Perna viridis dan Harpiosquilla raphidea. Nilai faktor biokonsentrasi (BCF) Perna viridis dengan bobot 2,89 g; 6,13 g; 10,27 g; dan 12,26 g berturut-turut adalah sebesar 4,29 mL g-1; 3,35 mL g-1; 3,20 mL g-1; dan 2,86 mL g-1, sedangkan nilai faktor biokonsentrasi (BCF) Harpiosquilla raphidea dengan bobot 38,27 g; 40,19 g; 50,89 g; dan 61,22 g berturut-turut adalah sebesar 10,39 mL g-1; 10,32 mL g-1; 10,20 mL g-1; dan 9,88 mL g-1. Dibandingkan dengan Perna viridis, Harpiosquilla raphidea lebih cocok digunakan sebagai bioindikator pencemaran 137Cs berdasarkan akumulasi pada keseluruhan tubuh.

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National Nuclear Energy Agency (BATAN) has already decided to build an experimental nuclear reactor. In the operational process, this reactor will release some radionuclides to the environment and one of them is 137Cs. Due to this phenomenon, researchers need some bioindicators to determine the contamination of 137Cs. The kinetics of 137Cs bioaccumulation through seawater pathway on green mussel (Perna viridis) and mantis shrimp (Harpiosquilla raphidea) have been investigated by observing the effects of varying body sizes. An aquaria experiment is applied to four body size groups with two replications. The experiment was carried out by 3 steps such as: uptake, depuration, and modelling.

The results showed that the uptake and elimination rates decreased along with the increasing body size. The values of bioconcentration factor (BCF) on Perna viridis 2,89 g; 6,13 g; 10,27 g; and 12,26 g were found to be 4,29 mL g-1; 3,35 mL g-1; 3,20 mL g-1; and 2,86 mL g-1, while on Harpiosquilla raphidea 38,27 g; 40,19 g; 50,89 g; and 61,22 g were found to be 10,39 mL g-1; 10,32 mL g-1; 10,20 mL g- 1; and 9,88 mL g-1, respectively. Compared to Perna viridis, Harpiosquilla raphidea can be considered as a convenient bioindicator on the basis of the whole body accumulation."

"[ABSTRAKTelah dilakukan penelitian mengenai identifikasi spesies dan distribusilarva udang mantis di Teluk Banten selama bulan Oktober 2013--November 2013.Penelitian bertujuan untuk mengukur efektivitas aplikasi DNA barcoding dalamidentifikasi larva udang mantis dan mempelajari pola distribusinya di TelukBanten. Larva udang mantis sebanyak 138 individu dikoleksi denganmenggunakan jaring larva dengan besar mulut 30x30 cm2 dan besar jaring sebesar500 μm dari 6 stasiun penelitian. Daerah COI sebagai penanda DNA barcodingefektif dapat digunakan untuk identifikasi larva udang mantis dengan variasiintraspesies sekuen COI berkisar antara 0,7--2,4%. Distribusi larva udang mantisberpusat di Stasiun 4 yang ditandai dengan tingginya kelimpahan larva udangmantis pada lokasi tersebut (P<0,005; ANOSIM). Ordinasi NMDS danklusterisasi berdasarkan jarak Bray-Curtis menunjukkan distribusi larva udangmantis dipengaruhi oleh kondisi perairanTeluk Banten. Faktor lingkungan yangmemengaruhi kelimpahan larva udang mantis adalah suhu, salinitas dan kecerahandengan nilai R2 adjusted sebesar 94,5% (P<0,05). Distribusi, kelimpahan, dankomposisi larva udnag mantis di Teluk Banten juga dipengaruhi oleh polaperilaku larva (vertical migration) dan arah arus yang memengaruhi perairanTeluk Banten. Distribusi kelimpahan larva pada lokasi penelitian selama bulanOktober--November 2013 bergerak kearah barat Teluk Banten.

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ABSTRACTPlanktonic larvae of stomatopoda were collected at six stations in BantenBay from October 2013 to November 2013, aimed at assessing effectiveness ofusing COI gene for barcoding stomatopoda larvae and studying its distribution inBanten Bay. A total of 138 stomatopod larvae were obtained by deploying larvaltrap of 30x30 cm2 mouth diameters and 500 μm mesh size for approximately 10minutes just beneath the surface. Five species of stomatopod successfullyidentified using COI gene as barcode marker. Variation of intraspecies for COIgene based on Kimura 2-Parameter (K2P) were found to be ranged from 0,7% to2,4%. NMDS ordination and Bray-Curtis cluster shown that distribution ofstomatopod larvae affected by hydrodynamic on Banten Bay. Larvae abundance atsix stations in Banten Bay affected by temperature, salinity, and visibility withscore of adjusted R2 is 94,5% (P<0,05). Distribution, abundance, and diversity ofstomatopods larvae are affected by vertical migration and current on Teluk Bantenwater.;Planktonic larvae of stomatopoda were collected at six stations in BantenBay from October 2013 to November 2013, aimed at assessing effectiveness ofusing COI gene for barcoding stomatopoda larvae and studying its distribution inBanten Bay. A total of 138 stomatopod larvae were obtained by deploying larvaltrap of 30x30 cm2 mouth diameters and 500 μm mesh size for approximately 10minutes just beneath the surface. Five species of stomatopod successfullyidentified using COI gene as barcode marker. Variation of intraspecies for COIgene based on Kimura 2-Parameter (K2P) were found to be ranged from 0,7% to2,4%. NMDS ordination and Bray-Curtis cluster shown that distribution ofstomatopod larvae affected by hydrodynamic on Banten Bay. Larvae abundance atsix stations in Banten Bay affected by temperature, salinity, and visibility withscore of adjusted R2 is 94,5% (P<0,05). Distribution, abundance, and diversity ofstomatopods larvae are affected by vertical migration and current on Teluk Bantenwater.;Planktonic larvae of stomatopoda were collected at six stations in BantenBay from October 2013 to November 2013, aimed at assessing effectiveness ofusing COI gene for barcoding stomatopoda larvae and studying its distribution inBanten Bay. A total of 138 stomatopod larvae were obtained by deploying larvaltrap of 30x30 cm2 mouth diameters and 500 μm mesh size for approximately 10minutes just beneath the surface. Five species of stomatopod successfullyidentified using COI gene as barcode marker. Variation of intraspecies for COIgene based on Kimura 2-Parameter (K2P) were found to be ranged from 0,7% to2,4%. NMDS ordination and Bray-Curtis cluster shown that distribution ofstomatopod larvae affected by hydrodynamic on Banten Bay. Larvae abundance atsix stations in Banten Bay affected by temperature, salinity, and visibility withscore of adjusted R2 is 94,5% (P<0,05). Distribution, abundance, and diversity ofstomatopods larvae are affected by vertical migration and current on Teluk Bantenwater., Planktonic larvae of stomatopoda were collected at six stations in BantenBay from October 2013 to November 2013, aimed at assessing effectiveness ofusing COI gene for barcoding stomatopoda larvae and studying its distribution inBanten Bay. A total of 138 stomatopod larvae were obtained by deploying larvaltrap of 30x30 cm2 mouth diameters and 500 μm mesh size for approximately 10minutes just beneath the surface. Five species of stomatopod successfullyidentified using COI gene as barcode marker. Variation of intraspecies for COIgene based on Kimura 2-Parameter (K2P) were found to be ranged from 0,7% to2,4%. NMDS ordination and Bray-Curtis cluster shown that distribution ofstomatopod larvae affected by hydrodynamic on Banten Bay. Larvae abundance atsix stations in Banten Bay affected by temperature, salinity, and visibility withscore of adjusted R2 is 94,5% (P<0,05). Distribution, abundance, and diversity ofstomatopods larvae are affected by vertical migration and current on Teluk Bantenwater.]"