0000000000303409
AUTHOR
Paskalina Th. Lefaan
Komunitas Gastropoda pada Padang Lamun Perairan Pantai Manokwari
Penelitian ini bertujuan mengidentifikasi dan menganalisa struktur komunitas gastropoda di pesisir pantai Manokwari. Pengambilan sampel menggunakan metode transek di dua stasiun pengamatan yaitu Pantai Briosi BLK dan Pantai Rendani. Setiap stasiun diletakkan tiga garis transek ke arah laut dan setiap transek terdiri atas 10 kuadrat. Transek ini diletakkan di atas padang lamun. Analisis data dilakukan meliputi indeks keanekaragaman, indeks keseragaman, dominasi dan kepadatan gastropoda. Hasil penelitian menunjukkan ditemukan bahwa kualitas perairan di kedua lokasi sampling dapat mendukung pertumbuhan gastropoda. Komposisi spesies gastropoda yang ditemukan pada kedua lokasi sampling meliputi …
PERTUMBUHAN, UMUR, DAN DIMORFISME SEKSUAL IKAN PELANGI ARFAK, Melanotaenia arfakensis Allen, 1990 DI SISTEM SUNGAI PRAFI, MANOKWARI, PAPUA BARAT
ABSTRACTArfak rainbow fish, Melanotaenia arfakensis is an endemic fish on several river systems in the northeastern part of the Vogelkop peninsula. This study aims to describe the growth, age at first maturity, and sexual dimorphism of this endemic fish on the Nimbai Stream and the Aimasi Stream, the Prafi River system. The fish were caught using handnet, then were measured their standard length and individual weight. Data were analyzed to estimated growth patterns, von Bertalanffy's growth rate, age at first maturity and sexual dimorphism characteristics. The results showed that male growth patterns varied, with a tendency of the increase in body length faster than that of body weight (neg…