Structure of Macrozoobenthos (Gastropods) Community in Mangrove Forest Ecotourism Pandansari Kabupaten Brebes, Central Java

Aims: This research aimed to analyze the abudance and diversity of macrozoobenthos in the Gastropod Class in the Ecotourism Waters of Pandansari Mangrove Forest, Brebes Regency, Central Java. Study Design: The research was conducted by survey. Place and Duration of Study: This research was carried out for 3 months between December 2018 until February 2019 in Ecotourism Forest Areas in Bakau Pandansari, Brebes Regency, Central Java. Methodology: The method used in this research was survey methods using primary data in the form of physical chemistry of aquatic data, gastropod abundance, diversity index, equitability index. Data collection techniques using purposive sampling in determining 3 stations and 3 repetitions. Data analysis in this research used descriptive statistics. Results: Research results found 9 species of Gastropods inhabiting the mangrove ecosystem, namely Casidulla aurisfelis, Cerithidea sp, Cerithidea alata, Cerithidea cingulata, Cerithidea obtusa, Polinices sp, Puperita sp, Telescopium telescopium and Turiculla nellial-suprius. Gastropod abundance ranged from 67 - 166 ind / m2. Gastropod diversity index in the medium category 2 <H’ ≤ 3. Uniformity values ranged from 0.79 to 0.81 with a high category. The relationship between water quality and gastropods had an R2 value of 97%, water quality can affect gastropod life and as much as 3% is influenced by other factors. Conclusion: Based on the results of this research that has been done, it can be concluded that in general environmental parameters in the Pandansari mangroves are still favorable in supporting the survival of the gastropods inhabiting them.

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DESKRIPSI KAWASAN HUTAN MANGROVE BERDASARKAN SIFAT BIOFISIK DAN FAKTOR SOSIAL DI MAROON MANGROVE EDUPARK DESA TUGUREJO SEMARANG, JAWA TENGAH (Description of Area in Mangrove Forest Based on Biophysical Properties and Social Factors in Maroon Mangrove EduPark, Tugurejo Village, Semarang, Central Java )

Management of Aquatic Resources Journal (MAQUARES) ◽

10.14710/marj.v6i4.21327 ◽

2018 ◽

Vol 6 (4) ◽

pp. 384-392

Author(s):

Riris Rezeki Sinaga ◽

Boedi Hendrarto ◽

Supriharyono Supriharyono

Keyword(s):

Mangrove Forest ◽

Ph Value ◽

Mangrove Ecosystem ◽

Primary Data ◽

Nitrate Content ◽

Social Aspect ◽

Average Value ◽

Central Java ◽

Two Factors ◽

Density Values

Kawasan sekitar Pantai Maron menjadi salah satu objek wisata baru di Kota Semarang bernama Maroon Mangrove EduPark (MMEP). MMEP merupakan kawasan seluas 1,5 hektar dengan kondisi hutan mangrove yang cukup luas. Rendahnya pengetahuan dan informasi pengelola merupakan permasalahan utama dalam pengelolaan. Tujuan penelitian ini mengetahui permasalahan dalam pengelolaan melalui karakteristik komunitas mangrove beserta kualitas perairan disekitarnya dari aspek nutrisi dan faktor-faktor penting dari aspek sosial. Metode penelitian yang digunakan adalah metode deskriptif dengan metode sampling. Data terdiri atas data utama dan penunjang. Data utama meliputi biofisik lingkungan dan sosial. Data penunjang meliputi data yang sudah diukur sebelumnya. Analisa data dilakukan secara deskriptif dan pengujian menggunakan Analisa Faktor. Kawasan mangrove di Maroon Mangrove EduPark yang terdapat di Desa Tugurejo Kecamatan Tugu memiliki beberapa jenis tumbuhan mangrove tetapi yang paling dominan yaitu Rizhophora dengan nilai kerapatan berkisar antara 800-2000 P/ha. Kondisi kualitas perairan di MMEP adalah suhu dengan nilai rata -rata yaitu 33- 34 °C, Nilai pH dengan nilai rata-rata 6, Salinitas air berkisar antara 25 – 26 0/00, kandungan Nitrat berkisar antar 0,8 – 1,6 mg/L dan kandungan Fosfat berkisar antara 0,034 – 0,051 mg/L. Faktor penting untuk pengembangan wisata didapatkan dua buah yaitu faktor (1) fungsi ekosistem mangrove untuk masyarakat dan faktor (2) estetika dan kondisi hutan mangrove. Faktor penting yang didapatkan diharapkan dapat menjadi solusi dalam pengelolaan. The area around Maroon Beach became one of the new tourist attraction in Semarang City named Maroon Mangrove EduPark (MMEP). MMEP is an area of 1.5 hectares with extensive mangrove forest conditions. The lack of knowledge and managerial information are a main problem in management. Purpose of this study was to know the problems in management through the characteristics of mangrove community and quality of surrounding waters from nutritional aspects and important factors from the social aspect. The research is used descriptive and sampling methods. Data consisted of main and supporting data. Primary data included environmental biophysics and social. The supporting data includes previously measured data. Data analysis were done descriptively and testing using Factor Analysis. Mangrove area in Maroon Mangrove EduPark located in Tugurejo Village Tugu District had several species of mangrove plants but the most dominant is Rizhophora with density values ranging between 800-2000 P / ha. The water quality condition in MMEP was temperature with average value of 33-34 ° C, pH value with average value 6, water salinity ranged from 25 - 26 0/00, Nitrate content ranges between 0,8 – 1,6 mg / L and Phosphate content ranges from 0,034 – 0,051 mg / L. Important factors for tourism development were two factors: (1) mangrove ecosystem function for community and factor (2) aesthetics and condition of mangrove forest. Important factors were expected to be a solution in the management.

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ECOTOURISM DEVELOPMENT IN TANJUNG BALAI DISTRICT, NORTH SUMATERA: MANGROVE FOREST ECOLOGICAL FACTORS

Jurnal Ilmu dan Teknologi Kelautan Tropis ◽

10.29244/jitkt.v4i2.7798 ◽

2012 ◽

Vol 4 (2) ◽

Author(s):

Fahriansyah Fahriansyah ◽

Dessy Yoswaty

Keyword(s):

Mangrove Forest ◽

Survey Methods ◽

Ecological Factors ◽

Mangrove Ecosystem ◽

Sandy Beaches ◽

Primary Data ◽

Mangrove Forests ◽

Bruguiera Gymnorrhiza ◽

Rhizophora Apiculata ◽

Structure Density

District of Tanjungbalai characterized by mangrove ecosystem with mud and sandy beaches has the potential to be developed for marine ecotourism. One way to maintain the existence of mangrove forests from destruction or extinction is to develop the Tanjungbalai district to be an ecotourism area. The research objective was to determine the potential ecological mangrove forest to be developed as an ecotourism area. The study was conducted in August-November 2011, using survey methods. Primary data were obtained through direct observation in the village of Bagan Asahan, Asahan Mati and Sungai Apung on mangrove community structure (density value) and ecological potential. Data analyses for suitability tourism index were based on Yulianda (2007). The results showed that the mangrove forest in the Tanjungbalai District had a good density in the category of very dense (the value of 1778 ind./Ha), mainly consisting of Bruguiera gymnorrhiza, Xylocarpus granatum, Rhizophora mucronata and Rhizophora apiculata. Suitability tourism index in the Tanjungbalai District was very suitable (S1) for mangrove tourism development including Village of Bagan Asahan (score 65, IKW 85.53%), Asahan Mati (score 61, IKW 80.26%) and Asahan Apung (score of 61, IKW 80.26%). Ecologically, mangrove forests in the district of Tanjungbalai is potential to serve as a mangrove ecotourism area. Keywords: mangrove forest, potential ecological, ecotourism development

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Kajian Potensi Pengembangan Ekowisata Sebagai Upaya Konservasi Mangrove Di Desa Pasar Banggi, Kabupaten Rembang

Journal of Marine Research ◽

10.14710/jmr.v8i1.24337 ◽

2019 ◽

Vol 8 (1) ◽

pp. 117-126

Author(s):

Ghea Ken Joandani Joandani ◽

Rudhi Pribadi ◽

Chrisna Adhi Suryono

Keyword(s):

Development Strategy ◽

Mangrove Forest ◽

Swot Analysis ◽

Secondary Data ◽

Mangrove Ecosystem ◽

Primary Data ◽

Survey Method ◽

Regional Government ◽

Mangrove Forests ◽

Central Java

Kawasan mangrove di Desa Pasar Banggi ditetapkan sebagai salah satu kawasan strategis dari sudut kepentingan fungsi dan daya dukung lingkungan hidup. Ekosistem mangrove di Desa Pasar Banggi merupakan salah satu yang terbaik di wilayah Pantura Jawa Tengah, sebelum dilakukan upaya rehabilitasi kondisi hutan mangrove di Desa Pasar Banggi mengalami kerusakan. Mengingat pentingnya fungsi hutan mangrove, maka sudah selayaknya dilakukan penanganan yang serius untuk mengurangi efek dari kerusakan ekosistem mangrove di Rembang ini. Salah satu alternative pemanfaatan yang memungkinkan untuk menjaga keutuhan ekosistem mangrove tersebut adalah melalui kegiatan ekowisata. Tujuan dari penelitian ini adalah untuk mengkaji potensi ekowisata mangrove di Pasar Banggi dan memberikan rekomendasi serta strategi pengembangan ekowisata di Pasar Banggi, Rembang. Metode yang digunakan dalam penelitian ini adalah deskriptif eksploratif. Metode pengumpulan data dengan menggunakan metode survei dalam bentuk data primer dan data sekunder. Data yang diperoleh dilakukan penentuan strategi pengembangan ekowisata mangrove dan analisis SWOT (Strength, Weakness, Opportunity, dan Threat). Hasil penelitian menunjukan bahwa faktor-faktor yang mempengaruhi pengembangan ekowisata mangrove di Desa Pasar Banggi adalah keragaman jenis mangrove, kualitas SDM dalam menangani wisatawan, ketersediaan SDA berkualitas untuk ekowisata dalam upaya konservasi, kebijakan dari pemerintah daerah terkait peraturan serta perundang-undangan tentang ekowisata hutan mangrove di Desa Pasar Banggi, kondisi sosial-ekonomi masyarakat, serta infrastruktur pendukung. Menurut analisi SWOT yang menjadi prioritas utama adalah: a) Peningkatan pengembangan ekowisata mangrove dalam bidang promosi program ekowisata dan penguatan institusi sebagai informasi ilmu pengetahuan ekosistem mangrove (Skor:4,52) dan b) Peningkatan partisipasi stakeholder terhadap pengembangan ekowisata mangrove yang berkelanjutan untuk peningkatan pelayanan terhadap pengunjung (Skor:3,29). The mangrove area in Pasar Banggi Village is designated as one of the strategic region, as the point of importance of function and living environmental support. Mangrove ecosystem in Pasar Banggi Village is the best one area in Pantura, Central Java. Actually, Pasar Banggi Village’s condition was suffered damage before any efforts of rehabilitation of mangrove forest. Regarding the importance of the function of mangrove forests, there is a must doing a serious action to reduce the damage effects to the mangrove’s ecosystem in Rembang. One of the utilization alternative that can be used to maintain the integrity of the mangrove ecosystem is through ecotourism activities. The purpose of this research is examining the potential of ecotourism in Pasar Banggi Village and giving recommendation with ecotourism development strategy. Method which is used in this research is explorative descriptive.The collecting data method using survey method in form of primary data and secondary data. Then take the decision about the mangrove ecotourism development strategy and SWOT (Strength, Weakness, Opportunity, and Threat) analysis, after the data were obtained. The research results shows that the factors that affects the mangrove ecotourism development in Pasar Banggi Village is kind of types of mangroves, human resources’ quality while dealing with tourists or visitors, the availability of qualified nature resources for ecotourism, in effort of conservation, a policy of regional government related regulations and law about mangrove forest ecotourism in Pasar Banggi Village, community’s socio-economic conditions, also supporting infrastructure. According to the SWOT analysis, the top concerning priority are: a) mangrove ecotourism raising development in the field of ecotourism program promotion and institution strengthening as the mangrove ecosystem knowledge information (Score: 4.52) and b) Raising stakeholders’ participation toward the sustainable mangrove ecotourism development for improving service toward visitors (Score: 3.29)

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ECOTOURISM DEVELOPMENT IN TANJUNG BALAI DISTRICT, NORTH SUMATERA: MANGROVE FOREST ECOLOGICAL FACTORS

Jurnal Ilmu dan Teknologi Kelautan Tropis ◽

10.28930/jitkt.v4i2.7798 ◽

2012 ◽

Vol 4 (2) ◽

Author(s):

Fahriansyah Fahriansyah ◽

Dessy Yoswaty

Keyword(s):

Mangrove Forest ◽

Survey Methods ◽

Ecological Factors ◽

Mangrove Ecosystem ◽

Sandy Beaches ◽

Primary Data ◽

Mangrove Forests ◽

Bruguiera Gymnorrhiza ◽

Rhizophora Apiculata ◽

Structure Density

<p>District of Tanjungbalai characterized by mangrove ecosystem with mud and sandy beaches has the potential to be developed for marine ecotourism. One way to maintain the existence of mangrove forests from destruction or extinction is to develop the Tanjungbalai district to be an ecotourism area. The research objective was to determine the potential ecological mangrove forest to be developed as an ecotourism area. The study was conducted in August-November 2011, using survey methods. Primary data were obtained through direct observation in the village of Bagan Asahan, Asahan Mati and Sungai Apung on mangrove community structure (density value) and ecological potential. Data analyses for suitability tourism index were based on Yulianda (2007). The results showed that the mangrove forest in the Tanjungbalai District had a good density in the category of very dense (the value of 1778 ind./Ha), mainly consisting of Bruguiera gymnorrhiza, Xylocarpus granatum, Rhizophora mucronata and Rhizophora apiculata. Suitability tourism index in the Tanjungbalai District was very suitable (S1) for mangrove tourism development including Village of Bagan Asahan (score 65, IKW 85.53%), Asahan Mati (score 61, IKW 80.26%) and Asahan Apung (score of 61, IKW 80.26%). Ecologically, mangrove forests in the district of Tanjungbalai is potential to serve as a mangrove ecotourism area.</p> <p>Keywords: mangrove forest, potential ecological, ecotourism development</p>

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The Relationship Between Water Quality and Phytoplankton Abundance at The Eastern Part of Segara Anakan Cilacap, Central Java

BioEksakta : Jurnal Ilmiah Biologi Unsoed ◽

10.20884/1.bioe.2019.1.2.1761 ◽

2019 ◽

Vol 1 (2) ◽

pp. 1

Author(s):

Hasby Ghoni Asiddiqi ◽

Agatha Sih Piranti ◽

Erwin Ardli Riyanto

Keyword(s):

Water Quality ◽

Negative Correlation ◽

Physical Factor ◽

Phytoplankton Abundance ◽

Chemical Factor ◽

Strong Negative Correlation ◽

Positive Correlation ◽

Central Java ◽

Primary Producer ◽

The Relationship

Phytoplankton is the primary producer whose existence depends not only on the nutrient. The eastern part of Segara Anakan waters experienced changes where the decline in quality which received input from organic and inorganic wastes and residential, industrial and factory wastes of Holcim and Pertamina factories. The purpose of this research is to study the water quality and to study the relationship between water quality and abundance of phytoplankton at the eastern part of Segara Anakan. The result showed that Water quality in Segara Anakan waters in the eastern part of Cilacap consists of several parameters that beyond the quality standards according to the Keputusan Menteri Lingkungan Hidup No. 51 of 2004 such as pH, Nitrate, Ammonia, Phosphate, and TSS. Water temperature is a physical factor which has a strong negative correlation with the abundance of phytoplankton, followed by TSS as a physical factor which has a positive correlation. The chemical factor which has a positive correlation with abundance are TDS, Nitrite and pH, followed by Phosphate, Salinity, Ammonia, and Nitrate which has a negative correlation with the abundance of phytoplankton. Key Words: Environmental factor, phytoplankton, Segara Anakan, Spatial variation, temporal variation.

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The spesies composition and distribution pattern of Gastropod at Forrest Mangrove Block Bedul Segoro Anak, Alas Purwo National Park

Jurnal ILMU DASAR ◽

10.19184/jid.v14i2.626 ◽

2014 ◽

Vol 14 (2) ◽

pp. 99

Author(s):

Joko Swasono Adi ◽

Sudarmadji Sudarmadji ◽

Wachju Subchan

Keyword(s):

Distribution Pattern ◽

Mangrove Forest ◽

National Park ◽

Diversity Index ◽

Abiotic Factors ◽

Organic Content ◽

Time Interval ◽

Gastropod Species ◽

Cerithidea Cingulata ◽

Pattern Group

This research aims to determine the spesies compossition and distribution pattern of Gastropod and its relationship with abiotic factors (pH, salinity, soil texture, and organic content of the soil, and the high of tide of the eustuary area) in the Mangrove forest at Blok Beduk Segoro Anak Alas Purwo National Park. This research was conducted on February 2013. Data was taken four times using a week time interval during one month. Every observation covered eight stations, where station 1 to station 4 consist of four transects and 40 plots, while station 5 to station 8 consist of 3 transects with 42 plots and each plot was 5 m × 5 m. Gastropod observed from each plot are preserved with 70% alcohol and identified in Malakologi Laboratory, Indonesian Institute of Sciences (LIPI). Results of the research reveated that the Gastropod observed consist of 19 families and 37 species, and the dominant family is Ceritidae. The Diversity index of Shanon Wiener was 0.53 (low deversity). Two available of Distribution pattern, group (Canarium labiatum, Cassidula nucleus, Cerithium coralium, Chicoreus brunneus, Cassidula vespertilionis, Cerithidea cingulata, Cerithidea quadrata, Chicoreus capucinus,Conus rattus, Conus striolatus, Ellobium aurisjudae, Littorina carinifera, Littorina scabra, Monodonta labio, Nassarius melanoides, Nassarius olivaceus, Nerita balteata, Nerita planospira, Nerita undata, Pugilina ternatana, Sphaerassiminea miniata, Telescopium telescopium, Terebralia sulcata, Thais intermedia), random (Angaria delphinus, Conus catus, Conus omaria, Cymatium moniliferum, Erronea errones, Oliva oliva, Polinices aurantius, Pollia undosa, Tectus pyramis, Trochus californicus, Turbo argyrostoma). The abiotic factors had relatianship not significantly (p = 0.067) on Gastropod distribution pattern. Keywords : Distribution pattern,Gastropod, species compossition

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Komposisi Jenis Gastropoda di Mangrove Desa Kaliwlingi dan Sawojajar, Jawa Tengah

Journal of Marine Research ◽

10.14710/jmr.v9i2.26558 ◽

2020 ◽

Vol 9 (2) ◽

pp. 167-174

Author(s):

Erik Wijaya Kusuma ◽

Ria Azizah Tri Nuraini ◽

Retno Hartati

Keyword(s):

Mangrove Forest ◽

Diversity Index ◽

Gastropod Species ◽

Mangrove Area ◽

Central Java ◽

Mangrove Ecosystems ◽

The Mean ◽

The Difference ◽

Different Characteristics

ABSTRAK : Desa Kaliwlingi dan Sawojajar mempunyai kawasan hutan mangrove dengan karakteristik berbeda. Kawasan hutan mangrove Kaliwlingi menjadi ekowisata mangrove sejak tahun 2016, sedangkan di Sawojajar merupakan kawasan mangrove alami. Perbedaan fungsi tersebut diduga dapat mempengaruhi keanekaragaman hayati yaitu salah satunya adalah gastropoda. Tujuan dari penelitian ini adalah untuk mengetahui struktur komunitas Gastropoda di ekosistem mangrove Desa Kaliwlingi dan Sawojajar, Kab.Brebes, Jawa Tengah. Pengambilan sampel dilakukan pada bulan Juni sampai Juli 2018. Penentuan titik sampling menggunakan metode purposive pada 3 stasiun dengan tiga kali pengulangan. Hasil penelitian menunjukan terdapat 2 subkelas yaitu Pulmonata dan Prosobranchiata, dengan 3 famili dan 9 spesies gastropoda dari 3 famili, yaitu Elliobidae; Cassidula aurisfelis (Elliobidae), C. nucleus (Elliobidae), Littoraria articulate (Littorinidae), L. carinifera (Littorinidae), L. melanostoma (Littorinidae), L. scabra (Littorinidae), Telescopium telescopium (Potamididae), Terebralia obtuse (Potamididae), T. palustris (Potaminidae). Nilai kelimpahan rata-rata gastropoda Desa Kaliwlingi dan Desa Sawojajar masing-masing 20,28 dan 16,36 Ind/m². Indeks Keanekaragaman (H’) gastropoda di kawasan mangrove Desa Kaliwlingi dan Desa Sawojajar termasuk ke dalam kategori rendah ke tinggi, sedangkan indeks keseragamannya berkategori rendah. Tidak ada jenis gastropod yang mendominasi di kawasan mangrove Kaliwlingi dan Sawojajar, dengan pola sebaran gastropoda mengelompok.ABSTRACT: Kaliwlingi and Sawojajar villages have mangrove forest areas with different characteristics. The Kaliwlingi mangrove forest area has been established as mangrove ecotourism since 2016, while in Sawojajar it is a natural mangrove area. The difference in function is thought to affect biodiversity, one of which is gastropods. The purpose of this study was to determine the structure of the Gastropoda community in the mangrove ecosystems of Kaliwlingi and Sawojajar Villages, Kab. Brebes, Central Java. Sampling was conducted in June to July 2018. Determination of the sampling points using purposive methods at 3 stations with three repetitions. The results showed that there were 2 subclasses, namely Pulmonata and Prosobranchiata, with 3 families and 9 gastropod species from 3 families, namely Elliobidae; Cassidula aurisfelis (Elliobidae), C. nucleus (Elliobidae), Littoraria articulate (Littorinidae), L. carinifera (Littorinidae), L. melanostoma (Littorinidae), L. scabra (Littorinidae), Telescopium telescopium (Potamebidide) ), T. palustris (Potaminidae). The mean abundance of gastropods in Kaliwlingi Village and Sawojajar Village were 20.28 and 16.36 Ind / m² respectively. Diversity Index (H ') of gastropods in the mangrove areas of Kaliwlingi Village and Sawojajar Village are in the low to high category, while the uniformity index is categorized as low. There is no type of gastropod that dominates in the Kaliwlingi and Sawojajar mangrove areas, and gastropod distributed as a grouped.

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Macrozoobenthos Community Structure and its Relationship with Waters Quality of Kampung Baru, Sebong Lagoi Village, Bintan Regency

Tropical Fisheries Management Journal ◽

10.29244/jppt.v5i1.34541 ◽

2021 ◽

Vol 5 (1) ◽

pp. 20-28

Author(s):

Wahyu Muzammil ◽

Nova Prihatin ◽

Winny Retna Melani

Keyword(s):

Water Quality ◽

Diversity Index ◽

Sampling Site ◽

High Tide ◽

Quality Standards ◽

Survey Method ◽

Ecological Index ◽

Index Value ◽

The Relationship

Kampung Baru is an area on Bintan Island which is located in Sebong Lagoi Village, Teluk Sebong District, Bintan Regency, Riau Islands Province. This study aimed at determine the structure of the macrozoobenthos community, the condition of the physico-chemical parameters of the waters and the relationship between macrozoobenthos and water quality. This research was conducted using a survey method. Sampling site points of this study using random sampling method with 30 sampling site points at high and low tide. The parameters measured are physical, chemical and biological parameters of the water. The results showed that there were 18 species of macrozoobenthos consisting of 4 classes of macrozoobenthos and 3 phylum at 30 sampling site points, namely mollusca, annelida, and arthhopoda phylum. Based on the ecological index value, it is known that the macrozoobenthos species in Kampung Baru waters are still classified as low with disproportionate conditions. The values of diversity index (low), uniformity index (high) and dominance index (low). Water quality of Kampung Baru waters at high tide still meet quality standards of Kepmen-LH No. 51 of 2004, but at low tide the values of temperature, DO, and salinity parameters did not meet quality standards. The relationship between macrozoobenthos parameters and water quality using PCA analysis where density parameters have a relationship with two parameters, namely temperature and pH.

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Identifikasi Dan Prevalensi Cacing Pada Saluran Pencernaan Ikan Gurami (Osphronemus gouramy) Di Desa Ngrajek Magelang Jawa Tengah [Identification And Prevalence Of Worms On Gouramy Gastrointestinal (Osphronemus gouramy) In Ngrajek Village Magelang Central Java]

Jurnal Ilmiah Perikanan dan Kelautan ◽

10.20473/jipk.v5i1.11423 ◽

2019 ◽

Vol 5 (1) ◽

pp. 43

Author(s):

Riza Aryani, Kismiyati, Gunanti Mahasri

Keyword(s):

Water Quality ◽

Freshwater Fish ◽

Prevalence Rate ◽

Slow Growth ◽

Survey Methods ◽

Economic Value ◽

Prevalence Rates ◽

Fish Size ◽

Central Java ◽

Possible Cause

Abstract Gouramy is one of the consumption of freshwater fish that have high economic value. Gouramy is a freshwater fish that have long been known and cultivated. Gouramy has many features including less demanding requirements for life, except that carp have slow growth. In maintenance appeared several constraints, such as illness. One possible cause is parasites. This research is aimed to know both the kind and the prevalence of gouramy gastrointestinal worms in Ngrajek Village Magelang Central Java. This research used survey methods through sampling at the site directly. Sample was taken once for 48 gouramy from four sites by using with fish size 10-15 cm. The main parameters of the research is the kind and prevalence degree of worms were found in the gastrointestinal of gouramy in the Ngrajek Magelang Central Java, while the supporting parameters in this research are water quality such as pH, temperature, dissolved oxygen (DO), and ammonia. The result of this research showed that from 48 gouramy from four sites, there was four samples that positively infected by gastrointestinal worms. The prevalence rate of gouramy infected with worms in the gastrointestinal for A location is 12.5%, for B location is 13.3%, for C location is 0%, and for D location is 10%. Worms prevalence rates are found in the gastrointestinal consists of Echinorhynchus 6.25%, Neoechinorhynchus 2.08% and Pallisentis 2.08%. Overall prevalence of gouramy infected with worms in the gastrointestinal in Ngrajek Village Magelang Central Java is 8.33%.

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Gastropod Density and Diversity in the Mangrove Forest of Pagatan Besar Village, Tanah Laut Regency, Indonesia

ILMU KELAUTAN Indonesian Journal of Marine Sciences ◽

10.14710/ik.ijms.24.4.179-185 ◽

2019 ◽

Vol 24 (4) ◽

pp. 179

Author(s):

Bimo Aji Nugroho ◽

Mochamad Arief Soendjoto ◽

Muhammad Zaini

Keyword(s):

Physical Environment ◽

Mangrove Forest ◽

Sandy Loam ◽

Diversity Index ◽

Public Awareness ◽

Gastropod Species ◽

The Third ◽

Relationship Of ◽

The Relationship ◽

Base Substrate

Public awareness and knowledge on mangrove forest biodiversity, especially gastropods, is very limited. This study aims to compare the density and diversity index of gastropod species according to their distance from the coastline and to analyze the relationship of the two with the physical environment around them. Three lanes were placed in the southern part of the mangrove forest. The first lane (LT-1) was placed about 5 m from the coastline towards the sea. The second lane (LT-2) was placed 10 m towards the sea from LT-1 and the third lane (LT-3) was 10 m from LT-2 towards the sea. In each lane there were 10 (1 mx 1 m) plots and the distance between adjacent plots was 10 m. A total of 1.432 Gastropod individuals consisting of 16 species and 7 families were collected from 30 plots. In detail 16 species (927 individuals) were collected from LT-1, 16 species (500 indv) from LT-2, and only 3 species or 5 individuals from LT-3. The density of LT-1, LT-2, and LT-3 species respectively was 92.7; 50.0; and 0.5 indv.m-2, while the diversity index successively was 2.56 (moderate); 2.53 (moderate); and 0.95 (low). Both species density and diversity in lanes that are close to the coastline are higher than in lanes located in the direction of the sea. The base substrate on the path that was close to the coastline was clay, while on the lane that laid in the direction of the sea was sandy loam.

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