Jan W. S. F. Tamanampo
Unknown Affiliation

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

Size Structure, Growth Pattern, And Condition Factor Of Red Lolosi Fish (Caesio chrysozona, Cuvier, 1830) From The Bay Of Ratatotok Subdistrict, Southeast Minahasa Tenggara District Rully Firmalinda Gobel; Jan W. S. F. Tamanampo; Rose O. S. E Mantiri
Jurnal Ilmiah PLATAX Vol. 5 No. 2 (2017): ISSUE JULY - DECEMBER 2017
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.5.2.2017.15908

Abstract

The research was conducted in December 2016 in Totok Bay, Ratatotok Subdistrict, with the aim to know the size structure, growth pattern and condition factor of red lolosi fish (Caesio chrysozona). It is expected that this research can provide basic information to monitor the presence of these fish in the future, especially in the territorial waters of Ratatotok. The name of red lolosi fish is a local name in North Sulawesi. Fish with the scientific name Caesio chrysozona is commonly found around the coral reefs and shallow rocky coastal waters. Data were collected in the field by taking a random sample of fish from the catch of fishermen who are still in a fishing boat. The number of fish samples taken to be analyzed were 66. Based on the measurement of 66 individuals of red lolosi, the structure size is as follows: male (51 head) with total length of 180 mm - 259 mm, length of fork 153 mm - 216 mm, and raw length 135mm - 200 mm. While body weight ranges from 71.38 gr - 217.18 grams and females (15 fish) with a total length range of 196 mm - 243 mm, fork length of 165 mm - 209 mm, and standard length of 149 mm - 185 mm. While body weight ranges from 110.22 gr - 193.99 gr. The growth pattern of red lolosi fish both male and female is a negative allometric growth pattern (b <3) where the length of fish increase faster than weight gain. The condition factor of each individual male and female varies with the value of the male condition factor ranging from 0.8094 - 1.2547 and females ranged from 0.9668 to 1.0281. Because the value of K ranged 1 then the conclusion is that male and female of red lolosi fish have a less flat shape. This causes the loss of weight of fish due to the influence of food, age, sex and gonad maturity. ABSTRAK Penelitian dilakukan pada bulan Desember 2016 di Teluk Totok Kecamatan Ratatotok, dengan tujuan untuk mengetahui struktur ukuran, pola pertumbuhan dan faktor kondisi dari ikan lolosi merah (Caesio chrysozona).  Ikan lolosi merah adalah nama lokal di Sulawesi Utara, dan ditemukan cukup berlimpah di  sekitar terumbu karang dan perairan dangkal yang berbatu-batu di Teluk TotokPengambilan sampel di lapangan  dilakukan dengan metoda sampling yaitu dengan cara mengambil sampel ikan secara acak dari hasil tangkapan nelayan yang masih berada dalam perahu nelayan.  Jumlah sampel ikan yang diambil untuk dianalisis sebanyak  66 ekor. Berdasarkan hasil penelitian terhadap 66 individu lolosi merah, diperoleh struktur ukuran sebagai berikut: jantan (51 ekor) dengan kisaran panjang total 180 mm - 259 mm,.  Sedangkan berat tubuh berkisar dari 71.38 gr – 217.18 gr,  dan betina (15 ekor) dengan kisaran panjang total 196 mm - 243 mm, Sedangkan berat tubuh berkisar dari 110.22 gr – 193.99 gr.  Pola pertumbuhan ikan lolosi merah baik jantan maupun betina adalah pola pertumbuhan allometrik negatif ( b < 3)  dimana pertambahan panjang ikan lebih cepat dari  pertambahan beratnya. Faktor kondisi setiap individu jantan dan betina bervariasi dengan nilai faktor kondisi jantan  berkisar 0.8094 - 1.2547 dan Betina berkisar 0.9668 - 1.0281.
Community Structure Of Sea Cucumber (Holothuroidea) In The Coastal Area Of The Island Of Jailolo Subdistrict Nyaregilaguramangofa South Halmahera Regency West Of North Maluku Gajali Husain; Jan W. S. F. Tamanampo; Gaspar D. Manu
Jurnal Ilmiah PLATAX Vol. 5 No. 2 (2017): ISSUE JULY - DECEMBER 2017
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.5.2.2017.15910

Abstract

Sea cucumbers (Holothuroidea) are a group of marine invertebrate animals of the class Holothuroidea (phylum Echinodermata). At present, hunting of sea cucumbers is not only targeted at species of high economic value, but also of low economic value. The pressure of exploitation has led to a decline in the population that can cause changes in the structure of the community. The purpose of this research is to understand the type of sea cucumber, analyze the structure of sea cucumber which includes individual density, diversity index, domination index, inter species association and dispersion pattern. Sampling was conducted at night during the lowest tide in April 2016. Based on the results of research conducted in the coastal area of Nyaregilaguramangofa Island, South Jailolo district, West Halmahera Regency, North Maluku. Species of sea cucumbers found in the study sites were 6 species of sea cucumber: Holothuria atra, Holothuria hilla, Holothuria scabra, Bohadschia marmorata, Bohadschia vitiensis and Ophedesoma grisea, each with an average individual density of 0.029 ind/m2, the diversity index (H '= 1,495), the fairness index (e = 0.834), the dominance index (C = 0.260), the association between the six species forming 4 pairs of positive associations and 11 pairs of negative associations and the entire population has a randomly distributed pattern.Keywords: Structure communities, Holothuroidea, Nyaregilaguramangofa, Nort Maluku  ABSTRAKTeripang (Holothuroidea) adalah kelompok hewan avertebrata laut dari kelas Holothuroidea (filum Echinodermata). Pada saat ini, perburuan teripang tidak hanya ditargetkan pada spesies yang bernilai ekonomis tinggi, tetapi juga yang bernilai ekonomis rendah. Tekanan eksploitasi telah menyebabkan penurunan populasi yang dapat menyebabkan perubahan pada struktur komunitasnya. Adapun tujuan dari penelitian ini yaitu untuk memahami jenis teripang, menganalisis struktur teripang yang meliputi kepadatan individu, indeks keanekaragaman, indeks dominasi, asosiasi antar spesies dan pola penyebaran. Pengambilan sampel dilakukan pada malam hari saat surut terendah pada bulan April 2016. Berdasarkan hasil penelitian dilakukan di kawasan pantai Pulau Nyaregilaguramangofa, kec. Jailolo Selatan Kab. Halmahera Barat, Maluku Utara. Spesies teripang yang ditemukan di lokasi penelitian berjumlah 6 spesies teripang: Holothuria atra, Holothuria hilla, Holothuria scabra, Bohadschia marmorata, Bohadschia vitiensis dan Ophedesoma grisea, masing-masing dengan kepadatan individu rata-rata 0.029 ind/m, indeks keanekaragaman (H' = 1.495), indeks kemerataan atau keserasian (e = 0.834), indeks dominansi (C = 0.260), asosiasi antar 6 spesies membentuk 4 pasang asosiasi positif dan 11 pasang asosiasi negatif dan keseluruhan populasi memiliki pola  penyebaran secara  acak.Kata kunci : Struktur komunitas, teripang, Nyaregilaguramangofa, Maluku UtaraÂ