ABSTRCT This research was carried out from July to September 2021 at Muara Angke Teluk Jakarta, North Jakarta City. The method used in this research is a survey method. The purpose of this study was to determine the structure of the macrozoobenthos community which includes species, diversity, and dominance of macrozoobenthos found in the waters of Muara Angke, Jakarta Bay. Muara Angke Bay…
ABSTRACT This research was conducted in October 2021. The research location is located in the Koto Panjang Reservoir area. This study aims to determine the content of microplastics in 5 types of fish in the Koto Panjang Reservoir, Kampar Regency, Riau. The method used in this research is a survey method. The object of the research was samples of the stomach and intestines of 5 types of fis…
ABSTRACT Research on the relationship between chlorophyll-a concentration and total phosphorus was conducted in Januari-Februari 2021 in Tanjung Kudu Lake and Parit Lake, Tambang District. The aims of this study was to determine the relationship between chlorophyll-a and total phosphorus concentration. There were 3 Station, namely Station 1 (inlet), Station 2 (in the middle of lake), and …
Abstract Rasbora caudimaculata is a type of freshwater fish that inhabits the Tanjung Kudu and the Teluk Petai Lakes, Kampar Regency. A study aims to understand the type of food in the stomach of the fish was conducted in October – January 2021. Samplings were carried out 4 times, once/2 weeks. The fish was caught using nets with mesh size 0.5 inch and 1 inch. There were 321 fishes (169 …
Abstract Tofu liquid waste contains a lot of organic matter that can be used as good nutrients for the growth of Spirulina sp. The purpose of this study was to determine the benefits of tofu liquid waste for the growth process of Spirulina sp. optimally. In addition, this study was also conducted to find the best concentration of tofu liquid waste for the growth of Spirulina sp. carried ou…
Abstract Pangasius polyuranodon is commonly found in the Pinang Luar Oxbow Lake, the growth pattern of that fish, however, is never been studied. To understand the growth pattern in the otolith of that fish, a study was conducted in February to March 2021. There were 50 fishes (41 male fishes and 9 female fishes) captured. The otolith (sagita) was removed using tweezers and shaved using a …
Abstract Thynnichthys thynnoides is one of fish species found in the Tanjung Kudu Lake, an oxbow lake of the Kampar River. A study aims to determine the type of food consumed by T. thynnoides was conducted from March-April 2021. Samplings were carried out 4 times, once/two weeks. The number of fish caught was 205, but only 131 fishes could be used as samples for stomach contents analysis,…
Abstract Decreased water quality greatly affects the life of various aquatic organisms, one of which is fish. Various community activities around the watershed can produce a variety of contaminants, both organic and inorganic. These pollutants can contaminate the river either directly or indirectly. The polluted aquatic environment will affect the diversity of fish. The purpose of this stu…
Abstrak Microplastics in the Koto Panjang Dam may orginated from the degraded plastic waste and maybe accidentally engulfed as fish swallowing their food. A research aims to determine microplastics in Pristolepis grooti in the Koto Panjang Dam in December 2020 - February 2021. The method used in this study is the survey method, in the Koto Panjang Dam are used as research sites. purchased…
Abstract In PLTA Koto Panjang Dam, plastic waste comes from various community activities and fishery activities. The waste is destroyed into small particles (0.3-5mm) called microplastics. To determine the presence of microplastics in the water column, a study was conducted in December 2020 - February 2021. Water samples were taken from 3 stations with 3 sampling points at 3 different dept…
Abstract Thynnichthys thynnoides is a type of freshwater fish that commonly inhabit the Teluk Petai Lake and Tanjung Kudu Lake, Kampar Regency. This study aims to understand the reproductive biology of T. thynnoides and has been conducted from December 2020- January 2021. The fish was sampled 4 times, twice/month. Parameters measured were sexual characteristics, sex ratio, gonad maturity l…
ABSTRACT Marine debris is a type of pollutant that commonly found in the mangrove ecosystems. The purpose of this study was to determine the composition and density of marine debris in the mangrove ecosystem in the Pongkar Village. Sampling was carried out in July to August 2020. The method used is the survey method. Sampling was carried out three times (once/2 weeks) at 3 observation sta…
Abstract Indragiri River is one of the largest rivers in Riau Province. This study aims to assess the water quality of the Indragiri River based on the Epilithic Periphyton Biodiversity Index. The research location is in Lubuk Terentang Village, Gunung Toar District, Kuantan Singingi Regency, Riau Province. The time chosen for the research is in February 2021. The samples were taken from 3…
Abstract Paweh fish (Osteochilus hasselti) is a freshwater fish that lives in the Bunter Lake. A study aims to determine the morphometric, meristic and growth patterns of O. hasselti was conducted from January-March 2020. Sampling was carried out 6 times, once/ 2 weeks. The number of fish caught was 125 fishes (72 males and 53 females). The meristical characteristics of the fish was as fol…
Abstract Pangasianodon hypopthalmus can be reared under biofloc system and short photoperiod. To understand the effect of biofloc system and photoperiod manipulation towards blood structure of P. hypopthalmus a study was conducted in September to December 2020. This experiment uses a factorial CRD design with 2 levels for B factor (biofloc and no biofloc), 3 levels for P factor (Natural, 1…
Abstract Heavy metals Pb and Cd are heavy metals that are toxic to aquatic organisms. Bacillaria sp. is one of the diatoms that acts as the first producer in water. This study aims to compare the effect of Pb and Cd on the growth of Bacillaria sp. This study was carried out in March to May 2021. Toxicity of heavy metals on the growth of Bacillaria sp. refers to the standard method of the A…
Abstract Pangasianodon hypophthalmus is a freshwater fish that can grow well in dark condition. In dark condition, phytoplankton may not grow well, and as a consequence the water quality was poor and it negatively effects the fish health in general. The combination of biofloc and photoperiod manipulation systems is expected to improve the water quality as well as the fish health. To unders…
Abstract Heavy metals are generally a problem even at the world level as a threat to humans themselves. Heavy metal pollutants can affect the life of aquatic organisms and many of them are Pb and Cd. Pb and Cd are heavy metals that are at high toxic levels. Phytoplacton Trachelomonas sp. which are primary producers in the food chain in aquatic ecosystems, are the first objects to be affect…
ABSTRACT Rearing Pangasianodon hypopthalmus under short manipulated photoperiod is able to improve the growth of that fish, but the water quality of those rearing tanks were poor as there was no phytoplankton to reduce the organic materials. By using the biofloc system, the organic materials might be processed and the water quality might be maintained. To understand the water quality of P.…
ABSTRACT During the rain, water flow and increased water surface as well as carrying materials including the snakehead and small fishes to the Teluk Petai lake. If there is no rain, however, there is no materials supply from the river. As the availability of food resources during the high and the low water level in the lake is different, the type of food as well as the length-weight relati…