Diseases resistant genes assemblage for tiger shrimp has been initiated byKeywords: broodstock, production, transgenic, tiger shrimp ABSTRAK Balai Riset Perikanan Budidaya Air Payau dan Penyuluhan Perikanan (BRPBAP3) bekerjasama dengan IPB Bogor dengan memanfaatkan teknologi transgenesis melalui transfeksi gen antivirus. Penelitian ini bertujuan untuk mengevaluasi performa pertumbuhan, distribusi ukuran, dan sintasan udang windu generasi F0 dan F1. Penelitian menggunakan 4 petak tambak berukuran 2.000 m 2 di Kabupaten Takalar, Sulawesi Selatan. Sebagai perlakuan adalah perbedaan generasi calon induk, yakni F0 (A) dan F1(B). Padat tebar yang digunakan adalah 0,5 ekor/m 2 dengan bobot awal berkisar 22,63-28,57 g/ekor. Selama pemeliharaan udang diberi pakan komersial dengan kadar protein 36-38% dengan dosis 10% pada bulan pertama dan menurun hingga 4% pada bulan keempat dari bobot total udang dengan penyesuaian dosis pakan yang diestimasi sesuai hasil sampling. Frekuensi pemberian pakan dilakukan pada pagi dan sore hari. Peubah yang diamati meliputi pertumbuhan, distribusi ukuran, sintasan udang windu dan kualitas air. Hasil penelitian menunjukkan bahwa performa pertumbuhan, distribusi ukuran dan sintasan udang windu turunan F0 tidak berbeda nyata (P>0,05) dengan turunan F1. Pola pertumbuhan udang windu pada kedua perlakuan relatif sama.Sintasan udang windu yang dihasilkan pada penelitian ini berkisar 51,7-73,35%. Hasil penelitian ini berimplikasi pada penyediaan induk unggul udang windu asal tambak dalam rangka mendukung kesinambungan produksi benih udang panti pembenihan.Kata Kunci: calon induk, produksi, transgenik, udang windu
<p><em>The increasing CO<sub>2</sub> concentration and temperature affected growth, chlorophyll content, calcium content, and histological tissue of tropical macroalgae Halimeda </em>sp<em>. The study was conducted to examine the interaction effect of the increased CO<sub>2 </sub>concentration and temperature on growth, chlorophyll-a content, calcium content, and histological tissue of tropical macroalgae <span style="text-decoration: underline;">Halimeda</span> <span style="text-decoration: underline;">sp</span> in a laboratory. Research was set with a completely randomized factorial design at 3 levels of factors (A) the CO<sub>2</sub> concentration: 385 ppm (ambient), 750 ppm (medium), 1000 ppm (high), and 3 levels of factor (B) the temperature: 30<sup>o</sup>C, 32<sup>o</sup>C, 34<sup>o</sup>C. Microcolony of macroalgae <span style="text-decoration: underline;">Halimeda</span> <span style="text-decoration: underline;">sp</span> were selected and obtained from the Lae-lae island then growing in the aquarium 30 x 30 x 45 cm<sup>3</sup>. Biological parameters observed were growth rate (total, specific and relative), chlorophyll-a content, calcium content, and histopathology tissue. The results showed that the increased of CO<sub>2</sub> concentration and temperature negatively affected on the growth of <span style="text-decoration: underline;">Halimeda</span> <span style="text-decoration: underline;">sp</span>, reduced of the growth rate, the chlorophyll-a content, calcium content and damaged to histopatology tissue of the Halimeda </em>sp<em> at trophical macroalgae. </em></p><strong><em>Keywords</em>: </strong><em>CO<sub>2</sub> concentration, temperature, growth response, histopathology, Halimeda </em>sp
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