Sahala Hutabarat

Preliminary observations on predator/prey relationships between chaetognaths and copepods in the Java Sea

There is evidence that copepods undertake vertical migrations in shallow waters off the north coast of Java. They aggregate at the surface of the sea at dawn and dusk but sink to deeper levels in the middle of the day. Chaetognaths feed on copepods and tend to occur in areas which are rich in their prey. They do not however follow them on vertical migrations during daylight.

Nutritional value of spiny lobsters (Panulirus sp.) from Southern Coast of Java

Five species of spiny lobsters are known to live in southern coast of Java. These lobsters are very popular seafood which was believed to have high nutritional value. However, nutrition content of these species from the area has not been investigated. This research was conducted to study nutrition content in these crustaceans. Five spiny lobsters i.e. Panulirus homarus, P. versicolor, P. ornatus, P. penicullatus, and P. longipes, were collected randomly from different locations at the southern coast of Java. Morphometric measurements were conducted prior to proximate analysis of these lobsters. All species of spiny lobsters investigated have similar carapace length. However, P. homarus and P. versicolor have the highest muscle weight. Proximate analysis shows that P. homarus also has high protein (24.18%) and carbohydrate content (55.68%) and lowest lipid content (6.18%) compare with other species. These results suggest that this lobster has best nutritional value for consumption.

Need To Conservation of Mangrove Ecosystem In Kotania Bay, District Of West Seram, Mollucas: An Approach The Local Wisdom And Behavior

The goal of this paper are to conserve the mangrove ecosystems within local wisdom and behavior approach. The sample selection is done with purposive sampling method. This method was used the consideration to determine the level of peo- ples behavior in conserving mangrove areas. Data Analysis of the indigenous communities were analyzed by descriptive qualitative, while the behavior using analysis of the proportion of the population. The presentation of the society who behave to support the conservation of mangrove ecosystemss is about sixty (60)%.