Morphologic characteristics and population density of Teredo Navalis L in mangrove forest area, Wailukum East Halmahera Regency

Abstract

This study aimed to analyze the population density and distribution patterns of Teredo Navalis L in the mangrove forest area of Wailukum Maba, East Halmahera Regency. A survey method with deskriptive analysis used in this research, while the reseacrh location was determined using a purposive method. The research location is 100 meters long and 50 meters wide, making it 5,000 m2. The research location was divided into 4 stations. Station I in the north, station II at the center, station III in the east and station IV in the west. At each station, five transect lines were made using a rope and 5 plots were placed alternately with a size of 10x10 meters. The results showed that there were three morphological characteristics of T. navalis L. These carakteristics divided in mangrove logs based on body measurements 0f 60 cm long, 30 cm long and 15 cm long. The population density of T. navalis L at the four stations varied between 1-2 ind/m2. the highest population density was measured at station II (2 ind/m2) and the lowest was measured at station III (1 ind/m2).