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Komposisi Makanan dan Strategi Makan Ikan Famili Gobiidae di Teluk Pabean, Indramayu Aldi Chandra Khoncara; . Sulistiono; Charles Parningotan Haratua Simanjuntak; Muhammad Fadjar Rahardjo; Ahmad Zahid
Jurnal Ilmu Pertanian Indonesia Vol. 23 No. 2 (2018): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (793.28 KB) | DOI: 10.18343/jipi.23.2.137

Abstract

The objectives of this study were to identify and evaluate diet composition and feeding strategy of Gobiid fishes in Pabean Bay, Indramayu. Fishes were collected monthly using gill nets, shrimp nets and fixed trap nets from April 2016-March 2017. Diet composition and feeding strategy were analyzed by IRI (Index of Relative Importance) and modification of the graphical Costello method, respectively. Nine species of Gobiidae were captured during the study period, namely Acentrogobius caninus (with total body length range 46-115 mm), Acentrogobius cyanomos (49-108 mm), Boleophthalmus boddarti (95-189 mm), Glossogobius aureus (70-210 mm), Oxyurichthys tentacularis (88-130 mm), Parapocryptes serperaster (112-198 mm), Paratrypauchen microcephalus (100-150 mm), Pseudapocryptes elongatus (88-190 mm), and Taenioides cirratus (160 mm). According to the diet analysis, A. caninus, A. cyanomos, and G. aureus were grouped into crustacivore, while the B. boddarti, P. serperaster, P. microcephalus, and P. elongatus were categorized as phytobenthic feeder. A. caninus, G. aureus, and A. cyanomos exhibited a specialist feeding strategy with the main food was Metapenaeus sp., Metapenaeus sp. and Acetes sp., respectively. B. boddarti, P. serperaster, P. microcephalus, P. elongates displayed a generalized feeding strategy. This research showed that Gobiid fishes occupy different trophic levels and play an important ecological role in Pabean Bay.
REPRODUCTIVE ASPECTS OF SCALLOPED PERCHLET, Ambassis nalua (HAMILTON, 1822) IN PABEAN BAY INDRAMAYU, WEST JAVA Nisha Desfi Arianti; M.F. Rahardjo; Ahmad Zahid
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 9 No. 1 (2017): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (508.27 KB) | DOI: 10.29244/jitkt.v9i1.17921

Abstract

ABSTRACTScalloped perchlet, Ambassis nalua,  is one of fishes in Pabean Bay, Indramayu. This research aims to determine the reproductive aspects of Ambassis nalua in Pabean Bay Indramayu including sex ratio, spawning season, first maturity, fecundity and spawning pattern. Fish samples were collected by trap net and trammel net at three sites in Pabean Bay from April to October 2015. A total of 424 of A. nalua were caught, consist of 114 males and 310 females; with total length ranged from 38.04 to 112.63 mm and total weight ranged from 0.37 to 25.44 g. Sex ratio of mature fish  was 1:1.9. The mature males and females were found in every month of sampling period. The gonado-somatic index (GSI) ranged from 0.40 to 0.83 and 2.36 to 4.54 for male and female, respectively. The peak of spawning season was found in September. The first maturity (Lm50) for male and female were 79.17 mm and 91.25 mm, respectively. The fecundity varied from 3,451–32,465 eggs. Egg diameter distribution shows that spawning pattern of A. nalua was batch spawner. Keywords: Ambassis nalua, spawning season, sex ratio, reproduction
Ekologi Trofik Komunitas Ikan di Perairan Segara Menyan, Subang, Jawa Barat (Trophic Ecology of the Fish Community in Segara Menyan Coastal Lagoon, Subang, West Java) Ahmad Zahid; M.F. Rahardjo; Lenny S Syafei; Rini Susilowati
ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 20, No 3 (2015): Ilmu Kelautan
Publisher : Marine Science Department Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (637.633 KB) | DOI: 10.14710/ik.ijms.20.3.170-186

Abstract

Pengetahuan mengenai ekologi trofik merupakan dasar dalam memahami ekosistem secara keseluruhan yang dapat dijelaskan melalui pola hubungan trofik interspesies ataupun interserikat. Penelitian bertujuan untuk menjelaskan ekologi trofik meliputi indeks trofik dan jenis makanan dominan, serikat dan tingkat trofik, dan variasi spasial dan temporal komunitas ikan di estuari Segara Menyan. Pengambilan ikan contoh dilakukan setiap bulan pada zona berbeda. Ikan contoh dipisahkan berdasarkan waktu dan lokasi pengamatan, dianalisis isi saluran pencernaannya. Analisa data meliputi indeks vakuitas, jumlah total organisme makanan, jenis makanan dominan, luas relung makanan, dan tingkat trofik.  Pada pengamatan 106 spesies ikan, sebanyak 1-380 saluran pencernaan ikan diamati. Sebanyak lima dari 106 spesies memiliki nilai indeks vakuitas “0” dan jumlah makanan yang dikonsumsi bervariasi mulai dari empat hingga 27 jenis makanan. Secara umum, luas relung ikan adalah rendah berkisar 0,20-0,78 dan kebanyakan berada pada kisaran 0,20-0,48. Zooplankton merupakan jenis makanan paling dominan dikonsumsi oleh ikan. Komunitas ikan dikelompokkan dalam tujuh serikat trofik, yaitu detritivora, fitoplanktivora, zooplanktivora, zoobentivora, moluskivora, krustasivora, dan pisivora. Tingkat trofik komunitas ikan berkisar 2,05-4,73. Faktor perubahan ontogenetik, persediaan makanan, karakteristik habitat, dan ruaya beberapa spesies ikan memengaruhi variasi spasio-temporal jejaring makanan di Segara Menyan. Kata kunci: interaksi trofik, laguna, ikan, variasi spasio-temporal, serikat trofik Knowledge of trophic ecology is one way to understanding the whole ecosystem which explained by trophic relationship pattern (interspecies or interguild). The objective research was described of the trophic ecology, i.e. trophic index and dominant prey, trophic guild and trophic level, and spatio-temporal variation of fish community in Segara Menyan coastal lagoon. Fish were collected monthly for one year at three zones. Fish samples were placed in separate labelled plastic bags according to the time scale and location sampling, then gut contents were analyzed. The data of vacuity index, number of prey, prey dominant, diet breadth, and trophic level were analyzed. For each of 106 fish species, between 1 and 380 stomachs, were examined. The vacuity index was also different among species. Five of 106 species had a vacuity index of “0” and total number of food items consumed varied between fish species, ranging from three items to 27 items. The overall diet breadth (Bi) was relatively low among species, ranging from 0.20 to 0.78, with most of them between 0.20 and 0.48. Calanoid copepods comprised the most common food item consumed by all the fishes examined. Fishes occurring can be broadly categorized into seven different trophic guilds. The trophic level of fish communities ranged from 2.05 to 4.73. Spatio-temporal variation of food web was influenced of ontogenetic shift, food availability, habitat characteristic, and migration of some species in Segara Menyan coastal lagoon. Keywords: trophic interaction, lagoon, fishes, spatio-temporal variation, trophic guild
Variasi spasio-temporal sebaran kumpulan ikan di Estuari Segara Menyan [Spatio-temporal variation of fish assemblages distribution in Segara Menyan estuary] Ahmad Zahid; Lenny S. Syafei; Rini Susilowati
Jurnal Iktiologi Indonesia Vol 14 No 1 (2014): Februari 2014
Publisher : Masyarakat Iktiologi Indonesia (Indonesian Ichthyological Society)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32491/jii.v14i1.96

Abstract

A study was conducted to describe spatio-temporal variation of fish assemblages in Segara Menyan estuary, Jawa Barat from January to December 2011. Fish specimens were collected with three fishing gears (gill net, trammel net, and trawl) from three zones namely stream, coastal lagoon, and marine zone. Fish assemblage measures were density, species richness, and fish diversity; whereas aquatic environmental variable were temperature, salinity, dissolved oxygen, and water clarity. Results showed a significant difference in the temperature, salinity, and water clarity. Density, species richness, and fish diversity showed important variations both in time and space (zone). Multiple linear regression analysis revealed inconsistent patterns in terms of the relationships between univariate fish assemblage measures and aquatic environmental variables. Abstrak Penelitian yang berlangsung dari Januari hingga Desember 2011 bertujuan untuk menjelaskan variasi spasio-temporal sebaran kumpulan ikan di estuari Segara Menyan, Jawa Barat. Pengambilan ikan contoh dilakukan pada tiga zona yaitu sungai, pantai, dan laut dengan menggunakan tiga alat tangkap yaitu jaring rampus, jaring berlapis, dan jaring arad. Variabel pengukuran ikan meliputi densitas, kekayaan spesies, dan diversitas ikan; sedangkan variabel lingkungan meliputi suhu, salinitas, oksigen terlarut, dan kecerahan perairan. Pada penelitian ini diperoleh hasil bahwa suhu, salinitas, dan kecerahan berbeda nyata menurut zona dan waktu. Sementara variasi spasio-temporal ikan terlihat jelas pada den-sitas, kekayaan spesies, dan diversitasnya. Analisis regresi linear berganda memperlihatkan ketiadaan konsistensi pada pola hubungan antara variabel pengukuran ikan dengan variabel lingkungan.
Iktiodiversitas di Perairan Teluk Bintuni, Papua Barat [Ichthyodiversity in Bintuni Bay, West Papua] Charles P.H. Simanjuntak; Sulistiono Sulistiono; M. F. Rahardjo; Ahmad Zahid
Jurnal Iktiologi Indonesia Vol 11 No 2 (2011): Desember 2011
Publisher : Masyarakat Iktiologi Indonesia (Indonesian Ichthyological Society)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32491/jii.v11i2.135

Abstract

Research on ichythyodiversity was conducted in June and December 2007 in order to reveal fish diversity in Bintuni Bay, West Papua. A total of 106 fish species belonging to 46 families and 12 orders were captured by beam trawl, fyke-net, and trap in wet and dry seasons. Perciformes was dominant and all of niche habitat inhabited by fish. The diversity of fishes was related with mangrove ecosystem around the Bintuni Bay. Fish communities divided into seven groups according to bioecological category and the group of marine-estuarine species was dominant. Spatial and temporal distributions of fish were varying related to aquatic environmental heterogeneity. A hypothetical trophic web was built based upon the different types of food resources used by each group of fish. Complexity of food web shows that estuary of Bintuni Bay is the feeding ground for many fish species. AbstrakPenelitian iktiodiversitas di perairan Teluk Bintuni, Papua Barat dilakukan pada Juni dan Desember 2007 dengan tujuan menggungkap kekayaan spesies ikan di perairan tersebut. Total spesimen ikan yang tertangkap pada dua musim yang berbeda dengan alat tangkap jaring tarik, pukat tepi, dan perangkap adalah 106 spesies dari 46 famili dan 12 ordo. Spesies ikan ordo Perciformes mendominasi komunitas ikan. Semua relung habitat yang tersedia diisi oleh beragam jenis ikan. Besarnya keragaman ikan yang ditemukan tidak terlepas dari keberadaan ekosistem mangrove di sekitar teluk. Komunitas ikan dibagi dalam tujuh kelompok berdasarkan kategori biolekologik dan kelompok spesies yang dominan adalah spesies estuari-bahari (marine-estuarine species). Distribusi spasio-temporal ikan beragam terkait heterogenitas lingkungan perairan. Jaring trofik hipotetik yang dikembangkan berdasarkan jenis ikan yang ditemukan beserta kebiasaan makanannya memperlihatkan bahwa komunitas ikan memanfaatkan semua relung makanan yang tersedia. Kompleksitas jaring makanan ikan memperkuat hipotesis bahwa daerah estuari Teluk Bintuni bervegetasi mangrove merupakan lumbung makanan bagi banyak spesies ikan.
Variasi makanan ikan seriding, Ambassis nalua (Hammilton, 1822) di ekosistem estuari Segara Menyan, Jawa Barat [Diet variation of scalloped perchlet (Ambassis nalua) in Segara Menyan Lagoon, West Java] Ahmad Zahid; M. F. Rahardjo; Subhat Nurhakim; Sulistiono Sulistiono
Jurnal Iktiologi Indonesia Vol 11 No 2 (2011): Desember 2011
Publisher : Masyarakat Iktiologi Indonesia (Indonesian Ichthyological Society)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32491/jii.v11i2.139

Abstract

This study describes feeding habit and strategy of scalloped perchlet (Ambassis nalua) according to ontogenetic shift and seasonal period. The fish samples were collected monthly from December 2010 to November 2011 in Segara Me-nyan Lagoon, West Java. Trammel net and gill net was used to catch the fish sample. We analyzed stomach contents of 380 individuals. Food items of the scalloped perchlet were composed of four categories, namely microcrustaceans, polychaetes, amphipods, and gastropods. According to ontogenetic shift and seasonal period, microcrustaceans used as main food by scalloped perchlet. Conversely, niche breadth of food influenced by ontogenetic shift and seasonal period, whereas percentage of stomach fullness significantly affected by seasonal period. Feeding strategy of the scalloped perchlet was mixed strategies (specialization-generalization). Information about of the diet of the scalloped perchlet shows dependence on estuarine ecosystems that provide of food resources. AbstrakPenelitian ini menggambarkan kebiasaan dan strategi pola makanan ikan seriding berdasarkan perubahan ontogenetik dan musim.Contoh ikan dikoleksi setiap bulan dari Desember 2010 hingga November 2011 di Segara Menyan, Jawa Barat. Penangkapan ikan menggunakan jaring berlapis dan jaring insang. Pengamatan isi saluran pencernaan dilakukan terhadap 380 ekor ikan seriding. Menu makanan terdiri atas empat kategori, yaitu mikrokrustase, polikaeta, amfipoda, dan gastropoda. Berdasarkan perubahan ontogenetik dan musim, ikan seriding menunjukkan menu makanan utama yang sama yaitu mikrokrustase. Kondisi yang berbeda terlihat pada luas relung makanan yang dipengaruhi oleh perubahan ontogenetik dan musim, sementara persentase kepenuhan lambung yang secara nyata dipengaruhi oleh perubahan musim. Strategi pola makanan ikan seriding adalah strategi gabungan (spesialis-generalis). Informasi mengenai menu makanan ikan seriding menunjukkan ketergantungannya terhadap ekosistem estuari yang menjamin ketersediaan makanan.
Iktiofauna ekosistem estuari Mayangan, Jawa Barat [Ichthyofauna of Mayangan estuary, West Java] Ahmad Zahid; Charles P.H. Simanjuntak; M. F. Rahardjo; Sulistiono Sulistiono
Jurnal Iktiologi Indonesia Vol 11 No 1 (2011): Juni 2011
Publisher : Masyarakat Iktiologi Indonesia (Indonesian Ichthyological Society)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32491/jii.v11i1.158

Abstract

Estuaries areas are the complex ecosystem and provide habitat for aquatic organisms, particularly for fishes. A study was conducted to determine fish species diversity in Mayangan estuary, from December 2010 to May 2011. Sampling was conducted in the three zones, namely marine coastal, river mouth, and mangrove creek. Fish specimens were collected by gill net, trammel net, beach seine, and mini trawl. A total of 2,854 fishes consisted of 46 families and 105 species, and the most collected group of fish was Carangidae. Based on occupied habitat, the richest number of species was found in the marine coastal (61), followed by the river mouth (16), and mangrove creeks (1). Typically marine-estuarine and estuarine-freshwater forms were represented by 15 and 12 species, respectively. The presence of fish larvae and juvenile in species composition indicated that Mayangan estuary has the function as habitat for feeding, spawning, refuge, and nursery. AbstrakEstuari adalah ekosistem yang kompleks dan menyediakan habitat bagi beragam biota akuatik, khsususnya ikan. Penelitian dilakukan pada bulan Desember 2010 hingga Mei 2011 untuk menentukan keragaman spesies ikan di estuari Mayangan. Pengambilan contoh dilakukan di tiga zona, yaitu pantai terbuka, muara sungai, dan alur sungai berhutan mangrove (anak sungai). Spesimen ikan dikumpulkan dengan jaring rampus dan jaring blama (gill net), jaring belanak (trammel net), krakat (beach seine), dan jaring arad (mini trawl). Ikan yang terkumpul sebanyak 2.854 ekor yang terdiri atas 46 famili dan 105 spesies, dan famili dominan adalah Carangidae. Berdasarkan habitat yang didiami, spesies terbanyak ditemukan di pantai terbuka sebanyak 61 spesies, 16 spesies ditemukan di mulut sungai, 1 spesies di alur sungai berhutan mangrove. Ikan bertipe habitat di pantai terbuka dan muara sungai berjumlah 15 spesies, sedangkan di muara sungai dan anak sungai diwakili oleh 12 spesies. Keberadaan larva dan juwana ikan di estuari Mayangan sebagai bagian dari komposisi spesies menunjukkan peran fungsional estuari sebagai daerah pemijahan, pembesaran, perlindungan, dan lumbung makanan.
Komunitas ikan di Telaga Warna, Jawa Barat [Fish community in Telaga Warna, West Java] Sulistiono Sulistiono; M. F. Rahardjo; Charles P.H. Simanjuntak; Ahmad Zahid
Jurnal Iktiologi Indonesia Vol 10 No 2 (2010): Desember 2010
Publisher : Masyarakat Iktiologi Indonesia (Indonesian Ichthyological Society)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32491/jii.v10i2.171

Abstract

The research aims to describe fish community in Telaga Warna, including species diversity and food web. Fish was sampled using cast net in three times at rainy season, inter season, and dry season in 2007. Physicochemical parameters were ex situ and in situ. Plankton was identified until genus. Fish samples were observed in laboratory. Water physicochemical support fishes living process in Telaga Warna. All fishes in Telaga Warna are non-native species. Almost of them is grouped as a plankton-feeder which eats on phytoplankton and zooplankton.AbstrakPenelitian bertujuan untuk memerikan komunitas ikan yang menghuni Telaga Warna, mencakup keanekaragaman ikan dan jejaring makanan. Pengambilan contoh ikan menggunakan jala yang dilaksanakan tiga kali pada musim penghujan, pancaroba, dan kemarau tahun 2007. Parameter fisikokimiawi diambil ex situ and in situ. Plankton diidentifikasi sampai tingkat genus. Ikan contoh dianalisis di laboratorium. Kualitas air mendukung kehidupan ikan di Telaga Warna. Semua jenis ikan bukan spesies asli. Hampir seluruh jenis ikan termasuk kelompok planktivora yang memakan fitoplankton dan zooplankton.
VARIASI SPASIO-TEMPORAL JENIS MAKANAN IKAN MOTAN, Thynnichthys polylepis DI RAWA BANJIRAN SUNGAI KAMPAR KIRI, RIAU [Spatio-temporal variation in the diet of Thynnichtys polylepis in floodplain river of Kampar Kiri, Riau] Ahmad Zahid; M. F. Rahardjo
Jurnal Iktiologi Indonesia Vol 9 No 2 (2009): Desember 2009
Publisher : Masyarakat Iktiologi Indonesia (Indonesian Ichthyological Society)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32491/jii.v9i2.190

Abstract

The research aimed to describe diet composition of Thynnichthyes polylepis. The diet compositions of population from two sites (Mentulik and Simalinyang) in floodplain river of Kampar Kiri, were compared according to the month. Fishes were captured using experimental gillnet and trap. For food habits analysis, the index of preponderance method was used. The collections were performed monthly from July to December 2008, where the stomach contents of 479 specimens were assessed. Prey items of T. polylepis were basically composed of phytoplankton and zooplankton, especially Cocconeis, Nitzschia, Navicula, Cyclotella, Pleurotaenium, and Testudinella. At site Mentulik, the most common items were Cocconeis, Nitzschia, and Navicula. Conversely, at site Simalinyang, Cocconeis, Pleurotaenium, and Nitzschia more representative. In general, main food of fish origin showed the highest index values at Mentulik, whereas at Simalinyang. The composition of items varied monthly, especially at Simalinyang. Food habits of fish may be flexible according to resource availability in spatial and temporal variation.
KEBIASAAN MAKANAN DAN PERUBAHAN ONTOGENETIK MAKANAN IKAN BAJI-BAJI (Grammoplites scaber) DI PANTAI MAYANGAN, JAWA BARAT [Food habits and ontogenetic changes in the diet of the rough flathead Grammoplites scaber in Mayangan Coast, West Java] Charles P.H. Simanjuntak; Ahmad Zahid
Jurnal Iktiologi Indonesia Vol 9 No 1 (2009): Juni 2009
Publisher : Masyarakat Iktiologi Indonesia (Indonesian Ichthyological Society)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32491/jii.v9i1.202

Abstract

The study on the food habits and ontogenetic changes in the diet of the rough flathead, Grammoplites scaber, in Mayangan Coast, West Java, was conducted in 12 months. The main objectives of the study were to analyze the food compotition and the changes of the food in relation to season and fish length. Samplings were done once in a month, using gillnet and beach seine. Total samples were 795 individuals and the range of total length was between 107-364 mm. Food analysis was determined by using index of preponderance. The result showed that the food of the rough flathead fish could be grouped into four groups. The groups are crustacea, pisces, cephalopod, and bivalve. This fish was crustacivore and the major foods were Portunus, Metapenaeus dan Penaeus. The main foods which were consumed varied each month. Along with the increasing of the fish size, there was a change of the main foods. Smaller fish tend to consume Penaeus; whereas the larger one tends to consume Portunus, Metapenaues and Saurida.