[Show abstract][Hide abstract] ABSTRACT: The objective of the present study was to evaluate the characteristics of mud clam ovaries (Geloina erosa) harvested from estuary areas of Reuleung River, Aceh Besar District, Indonesia. The sampling was conducted three times in June, July and August 2014. The clams were measured and weighed for cohort analysis using FISAT software and ovaries of a representative of each group length class was taken randomly for histological analysis. A total of 261 clams were sampled during the study which resulted in one cohort and two groups of shell-length classes i.e. 36.37– 49.09 mm (group A) and 49.09–61.81 mm (group B). Most of the oocytes in group A were at a late developing stage, while mature oocytes were predominant in group B, indicating that bigger clam have higher gonadal development stage. The ovaries of every group had several oocytes development stages, indicating anasyncronous spawner.
[Show abstract][Hide abstract] ABSTRACT: The objective of the research was to determine the pathogenicity of probiotic-potential bacteria isolated from the common carp (Cyprinus carpio) collected from the Jantho region, Aceh Province, Indonesia. The research was conducted from July to September 2014 at Microbiology Laboratory and Hatchery Laboratory, Syiah Kuala University. A completely randomized design with single factor at five levels of treatment with three replications was used in this study. The treatment was A, positive control of Aeromonas hydrophila; B, the negative control of Phosphate Buffered Saline (PBS) solution; C, D, and E, probiotic-potential bacteria A, B, and C, respectively. The ANOVA test showed that the inoculation of probiotic-potential bacteria had a significant effect on the growth rate (p < 0.05), but did not have significant effect on the survival rate (p > 0.05). It was concluded that three isolates can be used as probiotic-potential bacteria based on pathogenity assay.
[Show abstract][Hide abstract] ABSTRACT: The study of the lenght weight relationships and condition factors of the brackiswater fishes found in Kuala Gigeng was conducted. The objective of the present study was to evaluate the growth pattens and condition factor of the belanak (Mugil cephalus), seriding (Ambassis koopsii) and petek (Leiognathus
fasciatus). The sampling was conducted for eight time on July 2011 by using gillnet and castnet. The results showed that the belanak (M. cephalus) and seriding (A. koopsii) have allometric negative growth patten, while the petek (L. fasciatus) has an allometric positive. In addition, the relative weight condition factor’s was higher than 100. And the Fulton’s condition factor were not different significantly among fishes. Indicating the condition of the Kuala Gigeng is relatively in good condition and support fish growth as well.