Studi Awal Makrozoobentos di Kawasan Wisata Sungai Kalimas, Monumen Kapal Selam Surabaya

Sungai merupakan salah satu ekosistem perairan darat yang memiliki banyak kompleksitas dari penyusun organismenya maupun ancaman terhadap keberlangsungan ekosistem hayati. Salah satu faktor biotik yang dapat dijadikan indikator kesehatan sungai adalah makrozoobentos. Penelitian ini bertujuan untuk mengetahui jenis-jenis makrozoobentos di kawasan wisata sungai Kalimas, Monumen Kapal Selam (Monkasel) Surabaya sebagai studi awal biodiversitas dan kompleksitas struktur trofuk di Kalimas Surabaya. Pengambilan sampel dilakukan di sepanjang sungai sisi Monkasel menggunakan Ekman Grab (Buttom grab). Identifikasi dilakukan di Laboratorium Ekologi, Biologi Fakultas Sains, ITS dan di analisa menggunakan indeks biodiversitas. Berdasarkan hasil, diketahui bahwa makrozoobentos yang ditemukan adalah 8 spesies dengan nilai indeks biodiversitasnya 0,82

Emergence and migration of trunk neural crest cells in a snake, the California Kingsnake (Lampropeltis getula californiae)

<p>Abstract</p> <p>Background</p> <p>The neural crest is a group of multipotent cells that emerges after an epithelial-to-mesenchymal transition from the dorsal neural tube early during development. These cells then migrate throughout the embryo, giving rise to a wide variety derivatives including the peripheral nervous system, craniofacial skeleton, pigment cells, and endocrine organs. While much is known about neural crest cells in mammals, birds, amphibians and fish, relatively little is known about their development in non-avian reptiles like snakes and lizards.</p> <p>Results</p> <p>In this study, we show for the first time ever trunk neural crest migration in a snake by labeling it with DiI and immunofluorescence. As in birds and mammals, we find that early migrating trunk neural crest cells use both a ventromedial pathway and an inter-somitic pathway in the snake. However, unlike birds and mammals, we also observed large numbers of late migrating neural crest cells utilizing the inter-somitic pathway in snake.</p> <p>Conclusions</p> <p>We found that while trunk neural crest migration in snakes is very similar to that of other amniotes, the inter-somitic pathway is used more extensively by late-migrating trunk neural crest cells in snake.</p

Bioaktivitas ekstrak batang Xylocarpus granatum sebagai anti black spot alternatif pada Litopenaeus vannamei pasca panen

This research was done to explore bioactivity of Xylocarpus granatum’s stem extract as tyrosinase inhibitor for alternative preventing black spot in Litopenaeus vannamei postharvest. In this research, extraction of bioactive compound from X. granatum stem was done by soaking the stem in 96% methanol for 24h at temperature 29°C. The methanol was evaporated by using rotary evaporator at temperature 50°C. The extract was dilute with distillate water at series of dilutions (10%, 30%, 50%, 70%, 90%, and distillate water as the control), and then immersing L. vannamei into X. granatum’s stem extract as much as 10ml for 6h, and finally the data analyzing use the Kruskal Wallis test and the Least Significant Difference (LSD) test with the degree of confident 95%. The result showed that X. granatum’s stem extract is able to prevent a black spot of L. vannamei after harvesting process. Furthermore, concentration of 10 % of extract is an effective concentration for preventing a black spot and the control has black spot 0.0360 – 0.0373 mm2

Studi Pendahuluan : Peningkatan Kesejahteraan Masyarakat Pesisir Surabaya melalui Inovasi Olah Mangrove sebagai Tanaman Hias

Surabaya, one of the big cities in Indonesia which has a large coastal area. This coastal area has a lot of potential for high biodiversity, mainly mangroves. This study aims to know the first study about potential mangroves, media, and design for the new concept from mangrove products. Based on this study, we know that mangroves that have good potential are Rhizophora mucronata, Avicennia marina, and Bruguiera gymnorhiza. The media used for this study are clay, sand, and local moss. Design for this houseplant could be modified from kokedama. The result from this study will continue to the laboratorium and acclimation step and will name it “MangroveBall” as an icon of tourism from the coastal area in Surabaya and increase the local economy for the societ

Studi Awal Makrozoobentos di Kawasan Wisata Sungai Kalimas, Monumen Kapal Selam Surabaya

Sungai merupakan salah satu ekosistem perairan darat yang memiliki banyak kompleksitas dari penyusun organismenya maupun ancaman terhadap keberlangsungan ekosistem hayati. Salah satu faktor biotik yang dapat dijadikan indikator kesehatan sungai adalah makrozoobentos. Penelitian ini bertujuan untuk mengetahui jenis-jenis makrozoobentos di kawasan wisata sungai Kalimas, Monumen Kapal Selam (Monkasel) Surabaya sebagai studi awal biodiversitas dan kompleksitas struktur trofuk di Kalimas Surabaya. Pengambilan sampel dilakukan di sepanjang sungai sisi Monkasel menggunakan Ekman Grab (Buttom grab). Identifikasi dilakukan di Laboratorium Ekologi, Biologi Fakultas Sains, ITS dan di analisa menggunakan indeks biodiversitas. Berdasarkan hasil, diketahui bahwa makrozoobentos yang ditemukan adalah 8 spesies dengan nilai indeks biodiversitasnya 0,82