scholarly journals KARAKTERISTIK HABITAT KEPITING BAKAU (Scylla sp.) DI EKOSISTEM MANGROVE SILANG CADEK KECAMATAN BAITUSSALAM KABUPATEN ACEH BESAR, PROVINSI ACEH

2019 ◽  
Vol 6 (1) ◽  
pp. 75
Author(s):  
Mimie Saputri ◽  
Muammar Muammar
Keyword(s):  
Sandy Loam ◽  
Sampling Technique ◽  
Avicennia Marina ◽  
Mangrove Ecosystem ◽  
Habitat Characteristics ◽  
Scylla Serrata ◽  
Scylla Paramamosain ◽  
Bruguiera Gymnorrhiza ◽  
Mangrove Crab ◽  
Water Temperature Data

Research on the characteristics of Mangrove Crab Habit (Scylla sp) in Silang Cadek Mangrove Ecosystem, Baitussalam Subdistrict, Aceh Besar District, Aceh Province. This study aims to determine the habitat characteristics of Mangrove Crab (Scylla sp) in the Mangrove Ecosystem of Silang Cadek. The research method is survey with purposive sampling technique. The results of the survey are described. The results of the research showed that the water temperature data ranged from 22 s.d 25°C, the pH ranged from 7.5 to 7.7, the water salinity ranged from 30‰ -34‰. Substrate loamy sand, sandy loam, sandy clay loam. There are 4 constituent species of mangrove plants namely Bruguiera gymnorrhiza, Rhizopora stylosa, Rhizopora apiculata, Avicennia marina. Macrozoobenthos found were Nerita lineata, Uca crassipes, Terebralia palustris, Terebralia sulcata, Isognomon ephippium, Saccostrea cucculata, Uca demani, Scylla serrata, Scylla olivacea, Scylla paramamosain.

scholarly journals PENGARUH KARAKTERISTIK HABITAT MANGROVE TERHADAP KEPADATAN KEPITING ( SCYLLA SERRATA ) DI PANTAI UTARA KABUPATEN DEMAK, JAWA TENGAH

2021 ◽  
Vol 5 (2) ◽  
pp. 21-30
Author(s):  
Roni Haposan Sipayung
Keyword(s):  
Mangrove Ecosystem ◽  
Habitat Characteristics ◽  
Scylla Serrata ◽  
Effect Of Temperature ◽  
Mangrove Forests ◽  
Vegetation Density ◽  
Mangrove Crab ◽  
Significant Difference ◽  
Mangrove Vegetation ◽  
Crab Density

Rehabilitation of mangrove forests is very important to maintain ecosystem stability and increase the productivity of mangrove forests. The success of mangrove forest rehabilitation can be seen by the density of mangrove vegetation and the increase in mangrove crabs. Mangrove crab is the main commodity for farming communities because in addition to playing an important role in the mangrove ecosystem, it also has high economic value so it needs to be developed to increase people's income. This research was conducted with the aim of knowing the density of mangrove vegetation and crab density in different planting years and the effect of mangrove habitat characteristics on crab density. The research was conducted in three different planting years, namely 2003, 2005, and 2006. Each planting year consisted of a front zone, a middle zone and a back zone. In each zone a measuring plot with a size of 5 m x 5 m was made to collect data on vegetation density, temperature, mud thickness, salinity, acidity, and dissolved oxygen (DO). Then in the 5 m x 5 m plot, a 1 m x 1 m plot was made to collect data on the number of crabs. Data analysis used regression equation and ANOVA difference test. The results showed that the highest vegetation density was in the back zone of the 2006 planting year with a density of 2160 individuals/ha, while the highest density of crabs was in the 2005 planting year with a density of 12111.11 individuals/ha. Regression analysis showed the effect of temperature, mud thickness and salinity variables on crab density with the equation Y = 3.447 - 0.044X1 - 0.009X2 - 0.230X3 with R = 0.809. In the different ANOVA test, only the thickness of the mud had a significant difference at three years of planting (0.00 < 0.05).

scholarly journals PENGELOLAAN EKOSISTEM MANGROVE SEBAGAI KAWASAN EKOWISATA DI MAROON MANGROVE EDU PARK (MMEP) SEMARANG, JAWA TENGAH Management Of Mangrove Ecosystem As Ecotourism Area In Maroon Mangrove Edu Park (MMEP) Semarang, Central Java

2019 ◽  
Vol 8 (1) ◽  
pp. 37-45
Author(s):  
Desy Melinda Sari ◽  
Suryanti Suryanti ◽  
Bambang Sulardiono
Keyword(s):  
Swot Analysis ◽  
Management Strategies ◽  
Sampling Technique ◽  
Avicennia Marina ◽  
Mangrove Ecosystem ◽  
Survey Method ◽  
Bird Diversity ◽  
Bruguiera Gymnorrhiza ◽  
Purposive Sampling ◽  
Visitor Perceptions

ABSTRAK Ekosistem mangrove sangat berpotensi dijadikan kawasan ekowisata. Maroon Mangrove Edu Park (MMEP) Semarang  telah  dikembangkan sebagai ekowisata  berbasis  edukasi.  Penelitian  ini dilakukan pada  bulan Mei 2018, dengan tujuan mengetahui kondisi pengelolaan dan potensi daya tarik, persepsi pengunjung, dan mengetahui strategi pengelolaan ekowisata edukatif di MMEP. Metode penelitian yang digunakan adalah metode survey. Pengumpulan data dilakukan dengan teknik wawancara dan observasi untuk melakukan pengamatan terhadap lokasi kawasan,   kegiatan dan pelakunya melalui responden terhadap pengunjung dan pengelola. Teknik pengambilan sampel  pengunjung dengan accidential sampling, untuk pengelola dengan purposive sampling. Data dianalisis menggunakan  analisis SWOT. Hasil yang  diperoleh  menunjukan  potensi  daya  tarik  wisata  meliputi :  keragaman  mangrove  yang   terdiri dari Avicennia marina, Rhizopora mucronate, Bruguiera gymnorrhiza dan Ceriops sp, keanekaragaman burung,  fasilitas yang tersedia meliputi  tracking,  gardu  pandang,  gazebo,  aula.  Persepsi  pengunjung  terhadap  fasilitas  dan   aksesbilitas tergolong kurang  baik,  persepsi  terhadap  manfaat  edukasi  tergolong  kurang  baik.  Strategi  pengelolaan   ekosistem  mangrove sebagai ekowisata edukatif meliputi mengoptimalkan program edukasi dengan berkoordinasi  terhadap instansi sekolah untuk melakukan kunjungan lingkungan di MMEP, menguatkan kerjasama dengan pihak   lain untuk pengadaan atraksi wisata serta mengoptimalkan sarana prasarana,  meningkatkan pengetahuan dan  ketrampilan metal dengan melalukan studi banding dan mangajukan kerjasama dengan dinas terkait seperti pengadaan   penyuluhan, Mengoptimalkan ketersediaan  media  informasi  berupa  pengetahuan  mengenai  mangrove,  papan   peringatan  bagi  pengunjung  dan melakukan promosi.ABSTRACT Mangrove  ecosystems  have  the  potential  as  ecotourism  areas.  Maroon  Mangrove  Edu  Park  (MMEP) Semarang has developing as ecotourism based on education. This research occurred during May 2018, the aim is to understand  the  condition  of  management  and  potential  attractiveness,  visitor  perceptions,  and  understand  the educational ecotourism management strategies at MMEP. The research method used was survey method. The data collected by interview and observation on the location, activities and subject by interview to visitors and managers.  The sampling technique for visitors is accidential sampling, and for managers with purposive sampling. The data analyzed by SWOT analysis. The results showed that the potentials of tourist attraction include: mangrove diversityi.e. : Avicennia marina, Rhizopora mucronate, Bruguiera gymnorrhiza and Ceriops sp, bird diversity, facilities that available are tracking, guardhouse view, gazebo, hall. The visitor perceptions about facilities and accessibility were considered not good, and the perception of the benefits of education was not good enough too. Mangrove ecosystem management strategies as educational ecotourism are optimizing educational programs by coordinatinate with school institutions to visit environmental in MMEP, improving cooperation with other parties to procure tourist attractions  and optimizing infrastructure, increase managers (METAL) knowledge and skills by conducting comparative studies   and promoting  cooperation  with  the  related  official  for  the  provision  of  counseling,  optimizing  the  availability  of information media in the form of knowledge about mangroves, warning boards for visitors and conducts promotions.  

scholarly journals The population and mortality characteristics of mangrove crab (Scylla serrata) in the mangrove ecosystem of Tarakan City, Indonesia

2020 ◽  
Vol 21 (8) ◽  
Author(s):  
AGUS INDARJO ◽  
Gazali Salim ◽  
MUFRIDA ZEIN ◽  
DODDY SEPTIAN ◽  
STEPHANIE BIJA
Keyword(s):  
Carapace Length ◽  
Total Mortality ◽  
Condition Index ◽  
Mangrove Ecosystem ◽  
Scylla Serrata ◽  
Primary Data ◽  
Allometric Growth ◽  
Male And Female ◽  
Mangrove Crab ◽  
Mangrove Crabs

Abstract. Indarjo A, Salim G, Zein M, Septian D, Bija S. 2020. The population and mortality characteristics of mangrove crab (Scylla serrata) in the mangrove ecosystem of Tarakan City, Indonesia. Biodiversitas 21: 3856-3866. The mangrove crab is an iconic species of Tarakan City and is often is used as a souvenir. However, the high demand for this species can cause its population to decline. This study aimed to characterize the mangrove crab (Scylla serrata) population in the mangrove ecosystem of Tarakan City, North Kalimantan, Indonesia. This study was designed using a quantitative descriptive method with a case study model. The samples of mangrove crabs were obtained from 6 different stations using a purposive sampling method. The mangrove crab specimens were caught using 35-50 units of crab traps known as the ambau brackets. The primary data included carapace length, carapace width, carapace thickness, sex, and the total weight of each mangrove crab specimen. The results showed that male mangrove crabs have positive allometric growth when the condition index was fat. However, female crabs exhibited negative allometric growth when the condition index was thin. The Von Bertalanffy growth model analysis showed that the maximum carapace length of male mangrove crab in the mangrove ecosystem of Tarakan City was approximately 11.1118 cm for 189 days, while the female length was 9.6474 cm for 80 days. The total mortality value of male and female crabs was 120.01% and 154.94%, the mortality due to fishing was 84.69% and 135.75%, and natural mortality was 35.32% and 19.2%, respectively. The estimated rate of exploitation of both male and female crabs was 70.57% and 87.61%, respectively. The exploitation of S. serrata in the mangrove ecosystem of Tarakan City was evident, hence, conservation efforts are urgently required.

scholarly journals Kelimpahan dan pola pertumbuhan kepiting bakau (Scylla serrata) di hutan mangrove Kelurahan Belawan Sicanang, Kecamatan Medan Belawan, Provinsi Sumatera Utara

2017 ◽  
Vol 4 (1) ◽  
pp. 26
Author(s):  
Yenni Ningsih Siringoringo ◽  
Desrita Desrita ◽  
Yunasfi Yunasfi
Keyword(s):  
Water Quality ◽  
Growth Pattern ◽  
Sandy Loam ◽  
Carapace Width ◽  
Population Decline ◽  
Scylla Serrata ◽  
Nursery Ground ◽  
Purposive Sampling ◽  
Mangrove Crab ◽  
Substrate Texture

Kepiting bakau (Scylla serrata) merupakan salah satu spesies kunci dalam ekosistem mangrove yang memegang peranan yang sangat penting. Hutan mangrove yang ada di Kelurahan Belawan Sicanang sudah banyak mengalami konversi lahan seperti tambak dan pemukiman. Kondisi ini menyebabkan terjadinya penurunan kualitas habitat dan penurunan populasi untuk sumberdaya kepiting bakau akibat terjadinya kerusakan daerah asuhan dan mencari makan biota ini. Penelitian ini bertujuan untuk mengetahui kondisi ekologi mangrove, untuk mengetahui kelimpahan kepiting bakau (Scylla serrata), untuk mengetahui pertumbuhan kepiting bakau (Scylla serrata) di Hutan Mangrove Kelurahan Belawan Sicanang Kecamatan Medan Belawan Provinsi Sumatera Utara. Penelitian berlangsung pada Mei - Juni 2016. Metode yang digunakan dalam penentuan lokasi adalah purposive sampling dan dibagi menjadi 3 stasiun berdasarkan aktivitas yang berbeda. Struktur populasi kepiting bakau (Scylla serrata) ditinjau dari kelimpahan kepiting bakau (Scylla serrata), hubungan lebar karapas dengan bobot tubuh, pola pertumbuhan, dan faktor kondisi. Kualitas habitat kepiting bakau (Scylla serrata) dilihat dari kualitas air, tekstur substrat, C-organik, dan pasang surut. Hasil menunjukkan bahwa kelimpahan kepiting bakau (Scylla serrata) 16300 - 17000 ind/ha, dengan pola pertumbuhan allometrik negatif (b<3), faktor kondisi berkisar antara 0 - 1 yang tergolong ke dalam pipih atau tidak gemuk. Kualitas air dan substrat yang dikaji termasuk ke dalam kualitas air yang menunjang kehidupan kepiting bakau (Scylla serrata), tekstur substrat yaitu lempung berpasir dan lempung liat berpasir, serta C-organik < 1% tergolong sangat rendah, dimana tipe pasang surutnya adalah mixed prevailing semidiurnal.Mangrove crab (Scylla serrata) is one of the keystone species in the mangrove ecosystem, which had a very important role. Mangrove forests existed in Village Belawan Sicanang have been many experienced land conversion as embankment and settlements. These conditions led to degradation in habitat quality and population decline for mangrove crab due to the occurrence of the damage to the nursery ground and the feeding ground. The research aimed to determine abundance mangrove crabs and to determine the growth of mangrove crab. The research took place in May - June 2016. The method used in the determination of the location is purposive sampling and divided into 3 stations based on different activities. The mangrove crab population structure in terms of the abundance of mangrove crab, carapace width relation with body weight, growth pattern, and factor condition. The quality habitat mangrove crab viewed the water quality, the substrate texture, C-organic, and tides. The results showed that the growth pattern was negative allometric (b < 3), factor condition ranges between 0 - 1 which classified into flat or not fat. The water quality and substrate were assessed included in the water quality that supported life mangrove crab, the substrate texture was sandy loam and sandy clay loam, C-organic classified < 1% was very low, the type of tides was mixed semidiurnal prevailing.

scholarly journals Identifikasi nilai sikap masyarakat terhadap pengembangan potensi budidaya kepiting bakau (Scylla serrata) di desa Sumberwaru kecamatan Banyuputih kabupaten Situbondo

Agromix ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 47-54
Author(s):  
Sasanti Sihsubekti ◽  
Dayang Diah Fidhiani
Keyword(s):  
Regional Development ◽  
National Development ◽  
Sampling Technique ◽  
Coastal Areas ◽  
Scylla Serrata ◽  
Community Attitudes ◽  
Village Community ◽  
Mangrove Crab ◽  
Development Goals

This study aims to identify the value of community attitudes towards the potential of mangrove crab (Scylla serrate) cultivation in Sumberwaru Village, Banyuputih District, Situbondo Regency. The research location was determined purposively (intentionally) in the coastal and coastal areas of Sumberwaru Village, Banyuputih District, Situbondo Regency. Determination of respondents using purposive sampling technique and the number of respondents as many as 55 people. The results showed that the stages of the attitude of the Sumberwaru Village community at the affective, cognitive, and conative stages, which means that from the field conditions, it is known that the value of the Sumberwaru Village community's attitude towards the development of the potential for mangrove crab cultivation is still in the growing stage and requires continuous assistance by more competent parties. so that the national development goals of local potential-based regional development (mangrove crab cultivation) can be achieved optimally.

scholarly journals Kajian Struktur Ukuran Dan Parametr Populasi Kepiting Bakau (Scylla serrata) di Ekosistem Mangrove Teluk Bintan, Kepulauan Riau

2017 ◽  
Vol 15 (2) ◽  
Author(s):  
M. Tahmid, Achmad Fahrudin Dan Yusli Wardiatno
Keyword(s):  
Size Structure ◽  
Growth Parameters ◽  
Carapace Width ◽  
Data Retrieval ◽  
Mangrove Ecosystem ◽  
Fishing Effort ◽  
Scylla Serrata ◽  
Small Scale ◽  
Mud Crab ◽  
Mangrove Crab

ABSTRAKKepiting bakau (Scylla serrata) merupakan salah satu potensi komoditas perikanan skala kecil yang memiliki nilai ekonomi tinggi. Kelimpahan populasi dipengaruhi oleh upaya penangkapan dan kondisi ekosistem mangrove sebagai habitat utamanya. Produksi kepiting bakau di Teluk Bintan menurun dan penyebabnya belum diketahui dengan pasti. Oleh karena itu, perlu dilakukan kajian tentang biologi kepiting bakau di Teluk Bintan. Penelitian ini bertujuan untuk mengkaji status populasi kepiting bakau yang meliputi struktur ukuran, parameter pertumbuhan dan laju mortalitas dan eksploitasi. Pengambilan data kepiting bakau dilakukan dengan pendekatan yaitu fisher-based survey. Hasil penelitian menunjukkan ukuran kepiting bakau yang tertangkap mulai dari lebar karapas (CW) 64-172 mm, ukuran fase muda kepiting jantan yang tertangkap mencapai 46,62% dan betina mencapai 48,06%, keduanya hampir setengah dari tangkapan total, ini menunjukkan bahwa alat tangkap yang digunakan belum selektif. CW∞ jantan mencapai 176,93 mm lebih tinggi dari kepiting betina sebesar 169,58 mm, namun sebaliknya nilai koefesien K jantan (0,360) lebih kecil dari betina (0,390), sehingga pertumbuhan kepiting bakau betina lebih cepat dari jantan. Perkiraan angka kematian alami (M) jantan = 0,5566 dan kematian akibat penangkapan (F) jantan = 0,6434 sedangkan M betina = 0,59 dan F betina = 0,41. Laju eksploitasi (E) kepiting jantan mencapai 53,62%, ini dapat dikatakan telah terjadi lebih tangkap atau over eksploitasi. Kata kunci: Scylla serrata, parameter pertumbuhan, struktur ukuran, mangrove and Teluk Bintan ABSTRACTMud crab (Scylla serrata) is one of the potential of small-scale fishery commodities that have high economic value. The abundance of the population is affected by the fishing effort and conditions mangrove ecosystem as its main habitat. Mud crab production in the Gulf of Bintan declined and the cause is not known with certainty. Therefore, it is necessary to study on the biology of mud crab in the Gulf of Bintan. This study aims to assess the status of mangrove crab population that includes the size structure, parameters of growth and the rate of mortality and exploitation. Data retrieval is done with a mangrove crab fisher-based survey. The results showed that the size of mud crab caught from carapace width (CW) 64-172 mm, the size of the young phase male crabs caught females reached 46.62% and reached 48.06%, both are almost half of the total catch, it indicates that fishing gear used is not selective. CW∞ males reach 176.93 mm higher than the female crabs of 169.58 mm, but instead value koefesien K males (0.360) is smaller than females (0.390), so that the growth of female mud crabs faster than males. Estimated natural mortality rates (M) male = 0.5566 and deaths from arrest (F) male = 0.6434 while M females female F = 0.59 and = 0.41. The rate of exploitation (E) male crabs reached 53.62%, can be said to have occurred over fishing or over-exploitation. Keywords: Scylla serrata, growth parameters, structure size, mangrove and bay Bintan

scholarly journals Percentage of Mangrove Canopy Cover and Mollusks Abundance in Benoa Bay Mangrove Ecosystem

2021 ◽  
Vol 5 (3) ◽  
pp. 105
Author(s):  
Shintani Asri Tinambunan ◽  
Nyoman Dati Pertami ◽  
Ni Made Ernawati
Keyword(s):  
Canopy Cover ◽  
Avicennia Marina ◽  
Mangrove Ecosystem ◽  
Line Transect ◽  
Hemispherical Photography ◽  
Bruguiera Gymnorrhiza ◽  
Mangrove Species ◽  
Rhizophora Stylosa ◽  
Rhizophora Apiculata ◽  
The Relationship

This research was conducted to determine the condition of the mangrove ecosystem based on its canopy cover and to determine the types of mollusks (Bivalves and Gastropods) associated with the Benoa Bay mangrove ecosystem. Hemispherical photography is a method for observing mangrove canopy cover and line transect method for mollusks. The composition of mangrove species found in the research location were five species, namely Rhizophora stylosa, Rhizophora mucronata, Rhizophora apiculata, Bruguiera gymnorrhiza, and Avicennia marina. The percentage of mangrove canopy cover in the Benoa Bay mangrove ecosystem is in a good category (average = 76.59%). There are eight types of mollusks found in the research location. There are two types of bivalves (Polymesoda bengalensis and Gafrarium pectinatum) and six types of gastropods (Nerita balteata, Nerita picea, Neritina turrita, Pila ampullacea, Cassidula aurisfelis, and Littoraria melanostoma). The relationship between the percentage of mangrove canopy cover and abundance of mollusks in the Benoa Bay mangrove ecosystem is very strong (r) of 0.920. The higher the percentage value of mangrove canopy cover, the higher the mollusks abundance.

scholarly journals UJI POTENSI ANTIMIKROBA BIJI TUMBUHAN MANGROVE (AVICENNIA MARINA SP.) SEBAGAI UPAYA PEMBERANTAS PENYAKIT KEPITING BAKAU (SCYLLA SERRATA)

2017 ◽  
Vol 1 (2) ◽  
pp. 113-120
Author(s):  
Ratih Permana Sari ◽  
Molani Paulina Hasibuan
Keyword(s):  
Local Community ◽  
Clinical Symptoms ◽  
Avicennia Marina ◽  
Raw Material ◽  
Scylla Serrata ◽  
Diffusion Method ◽  
Mangrove Plant ◽  
Plant Seed ◽  
Mangrove Crab ◽  
Mangrove Crabs

Abstrak. Besarnya potensi alam yang dimiliki oleh Kota Langsa yaitu tumbuhan mangrove dikembangkan yang nantinya dapat digunakan dalam bidang kesehatan khususnya untuk pencarian bahan baku obat-obatan seperti obat antimikroba. Selain tumbuhannya, ketersediaan makanan laut seperti kepiting bakau juga merupakan salah satu potensi lokal yang banyak diminati oleh masyarakat setempat. Namun masyarakat harus berhati-hati dalam mengkonsumsi kepiting bakau karena ada kepiting bakau yang mengandung mikroorganisme atau bakteri berbahaya yang dapat merusak kesehatan manusia baik dalam jangka pendek maupun panjang. Penelitian ini bertujuan untuk mengkaji potensi mangrove sebagai antimikroba dan mengetahui komponen bioaktif yang terdapat pada mangrove dalam mengatasi penyakit pada kepiting bakau. Pengumpulan data dilakukan dengan pengambilan sampel biji mangrove Avicennia marina dilakukan  pada Desa Kuala Langsa.  Sampel mangrove yang diambil adalah biji yang tua dan kondisinya utuh, sampel kemudian dimasukkan dalam kantong sampel ditimbang hingga beratnya 1 kg. Hasil data uji skrining fitokimia diketahui kandungan senyawa biokatif dan jenis senyawa bioaktif yang terdapat di dalam ekstraksi biji mangrove adalah triterpenenoid, tanin, fenol dan alkaloid. Pengujian daya hambat ekstrak metanol dan n-heksan biji A. marina dilakukan dengan metode difusi agar. Pada beberapa pengulangan ekstrak pelarut metanol dan n-heksan sampel biji mangrove didapatkan zona bening rata-rata 3,13 mm dan 3,03 mm dari kontrol positifnya. Hasil gejala klinis pada kepiting bakau pasca perendaman ekstrak biji tumbuhan mangrove terlihat adanya perubahan seperti mengecilnya melanosis pada karapas, memudarnya kaki renang yang memerah, dan warna karapas mulai kehijauan.Kata Kunci: antimikroba, biji mangrove, kepiting bakau Abstrak. The amount of natural potency possessed by Langsa City is developed mangrove plant which later can be used in health field especially to search for raw material of medicines like antimicrobial drug. In addition to the plants, the availability of seafood such as mangrove crab is also one of the local potential that many in demand by the local community. But people should be careful in consuming mangrove crabs because there are crabs containing microorganisms or harmful bacteria that can damage human health both in the short and long term. This study aims to assess the potential of mangrove as an antimicrobial and to know the bioactive components contained in mangrove in overcoming the disease in mangrove crab. The data was collected by sampling of mangrove seeds conducted in Kuala Langsa Village. The mangrove samples taken were old mangrove seeds and the condition was intact, the sample then put in a sample bag weighed up to weighing 1 kg. The result of phytochemical screening data data of biochemical compound and bioactive compound type found in mangrove seed extraction of Avicennia marina are triterpenenoid, tannin, phenol and alkaloid. Testing of inhibitory power of methanol and n-hexane extract of A. marina seeds was done by agar diffusion method. In some repeat extracts of methanol and n-hexane solvent samples of mangrove seeds obtained an average clear zone of 3.13 mm and 3.03 mm of positive control. Furthermore, the results of clinical symptoms in mangrove crabs after soaking seed extracts visible changes such as decreased melanosis in the carapace, the waning of the swimming pool is red, and the color of the carapace begins to greenish.Keywords: Antimicrobial, mangrove plant seed, mangrove crab

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