scholarly journals Reproduction of Indian Mackerel Rastreliger kanagurta (Cuvier, 1816) in Morodemak Coast Demak Regency

2020 ◽  
Vol 22 (2) ◽  
pp. 85
Author(s):  
Dwi Rachmanto ◽  
Djumanto Djumanto ◽  
Eko Setyobudi
Keyword(s):  
Economic Value ◽  
Gonad Maturity ◽  
Indian Mackerel ◽  
Central Java ◽  
Length Relationship ◽  
Fish Samples ◽  
Egg Number ◽  
Males And Females ◽  
Relationship Of ◽  
Brood Fish

Indian mackerel is a group of small pelagic fish that has high economic value and is ecologically important. The catch of Indian mackerel in the Morodemak Coastal Fishing Port of Central Java has decreased within 2016-2018, which is suspected by overexploitation. This study aims to observe the reproduction of Indian mackerel. Fish samples were collected from the catches of the mini purse seine operated by fishermen in April-June 2019. The fish samples were measured their length and weight individually, then the abdomen dissected to collect gonad, and counted in sub-sample of the egg number. Data were analyzed to determine the length-weight relationship of fish, sex ratio, gonad maturity level (GML), gonad maturity index (GMI), the size of the first gonad matured, and the egg number in each gonad brood fish. The results showed a negative allometric length relationship, and the length-weight relation equation in female fish was W = 0.038 L 2.59 and in male was W = 0.178 L 2.03. The value of fish condition factors in males, and females obtained values ranging from 1-2. The proportion of fish in GML III ranges from 27.2 to 82.5%, while GML IV ranges from 3.6 to 33.8%. Fish GMI ranged from 0.17 to 4.75%. The eggs number ranged from 11.235 to 40.878 grain. The female Indian mackerel get the first gonad matured at the size of 15.2 cm.

scholarly journals STUDI ASPEK REPRODUKSI IKAN KEMBUNG LELAKI (Rastrelliger kanagurta, Cuvier 1817) PADA MUSIM PERALIHAN DI SELAT MADURA

2019 ◽  
Vol 11 (1) ◽  
pp. 45
Author(s):  
Evi Susanti ◽  
Arief Setyanto ◽  
Daduk Setyohadi ◽  
Irwan Jatmiko
Keyword(s):  
Sex Ratio ◽  
Morphological Observation ◽  
Maturity Level ◽  
Gonad Maturity ◽  
Indian Mackerel ◽  
Weight Relationship ◽  
Long Line ◽  
Fish Samples ◽  
Rastrelliger Kanagurta ◽  
Relationship Of

Ikan kembung lelaki (Rastrelliger kanagurta) merupakan salah satu jenis ikan pelagis kecil yang bermanfaat untuk memenuhi kebutuhan akan protein masyarakat, dan juga dapat digunakan sebagai umpan dalam perikanan rawai tuna (tuna long line). Kebutuhan yang tinggi akan jenis ikan ini dapat menimbulkan tekanan terhadap populasi ikan ini sehingga menyebabkan penangkapan yang berlebih. Dalam mengelola sumberdaya ikan diperlukan informasi mengenai biologi reproduksi dan aspek biologi lainnya. Salah satu aspek biologi yang terkait dengan informasi reproduksi adalah tingkat kematangan gonad. Dalam studi ini menganalisis hubungan panjang berat, nisbah kelamin, tingkat kematangan gonad (TKG), indeks kematangan gonad (IKG), dan hubungan antara IKG dengan berat ikan kembung lelaki. Pengamatan TKG dilakukan secara morfologi dan histologi. Pengambilan contoh ikan dilakukan di Tempat Pelelangan Ikan Mayangan, Probolinggo, Jawa Timur, selama bulan Februari sampai April 2018. Hasil analisa hubungan panjang berat menunjukkan bahwa ikan kembung lelaki memiliki pola pertumbuhan allometrik positif, nisbah kelamin ikan kembung lelaki jantan dan betina yaitu 87%:13% (6:1), Hasil pengamatan tingkat kematangan gonad secara morfologi pada 400 ikan contoh menunjukkan dalam keadaan belum matang gonad (tingkat kematangan I, II, III), pengamatan gonad secara histologi pada 8 ikan contoh menujukkan dalam keadaan tingkat kematangan gonad III dan IV. Ukuran diameter telur pada tingkat kematangan gonad III antara 280,91 -314,74 µm dengan rerata 296,78 µm dan pada tingkat kematangan gonad IV antara 287,99-315,31 µm dengan rerata 303,89 µm dengan nilai fekunditas antara 4.863,96-28.255,32 butir telur. Indeks kematangan gonad pada bulan Februari, Maret, April adalah 1,78, 1,32, dan 0,55. Analisa korelasi antara hubungan berat dengan IKG mempunyai hubungan yang signifikan dengan tingkat keeratan yang rendah.Indian mackerel (Rastrelliger kanagurta) is one of the small pelagic fish that is useful a need of protein requirement of the people while, and can also be used as bait in (tuna long line). High demand for this fish can cause pressure on this fish population, then cause overfishing. In managing fish resources, information about reproductive biology and other aspects of biology is needed. One aspect of biology related to reproductive information is the level of gonad maturity. In this study analyzed the relationship of leng weight relationship, sex ratio, gonad maturity level (GML), gonado somatic index (GSI) and relationship of GSI with weight of the indian mackerel. Fish sampling was conducted at Fish Auction Hall of Mayangan, Probolinggo, East Java during February to April 2018. The analysis result of length weight relationship show that indian mackerel has a positive allometric growth pattern, sex ratio of male and female is 87%: 13% (6:1). Morphological observation of gonad maturity level at 400 fish samples showed that the gonads were immature (gonad maturity levels I, II, III), histologic gonad observation on 8 fish samples showed in maturity state of gonad III and IV. The size of egg diameter at maturity level of gonad III between 280.91 -314.74 ìm with an average of 296.78 ìm and at maturity level of gonad IV between 287.99-315.31 ìm with an average of 303.89 ìm with a fecundity value between 4,863.96-28,255.32 eggs. Index of gonad maturity in February, March, April was 1.78, 1.32, and 0.55. Correlation analysis between the weight with GSI has a significant relationship but has a low level of closeness. 

scholarly journals Length-weight relationship and condition factor of endemic fish Bilih (Mystacoleucus padangensis Blkr.) in Lake Singkarak, West Sumatra, Indonesia

2021 ◽  
Vol 322 ◽  
pp. 01036
Author(s):  
Syahroma H. Nasution ◽  
Ira Akhdiana ◽  
M. Suhaemi Syawal ◽  
Agus Nurhidyat
Keyword(s):  
Condition Factor ◽  
Economic Value ◽  
Normal Range ◽  
Female Fish ◽  
High Demand ◽  
Male And Female ◽  
Weight Relationship ◽  
West Sumatra ◽  
Males And Females ◽  
Relationship Of

Bilih (Mystacoleucus padangensis) is an endemic species of Lake Singkarak and has important economic value. Overfishing of Bilih fish using non-selective fishing gear has led to a decline in its population. High demand, resulting in decreased production and size of Bilih fish. This research aims to determine this endemic fish's length-weight relationship and condition factor as basic data to the effort conservation. The fish was captured with experimental gillnet mesh sized 5/8, ¾, and 1 inch in Sumani, Batu Taba, Paninggahan, and PLTA intake stations. The total length and the weight of Bilih fish ranged from 40 – 95 mm and 10 – 74 mg, respectively. The highest length and weight of Bilih were 80.3 mm, and 45.0 mg were found at the Sumani station. The growth pattern of male and female fish was a negative allometric characteristic. The length-weight relationship of male and female fish was W = 0.00137 L2.368 and W = 0.00179 L2.312, respectively. Condition factors of males and females are 1.02 and 1.004, respectively. The result of condition factor value for males is higher than the female. The water quality values are within the normal range that supports fish life.

scholarly journals BEBERAPA ASPEK BIOLOGI DAN PRODUKSI HIU PAHITAN (Alopias superciliosus) DI PERAIRAN SELATAN JAWA TENGAH

2018 ◽  
Vol 6 (2) ◽  
pp. 137-146
Author(s):  
Lulu Anjayanti ◽  
Abdul Ghofar ◽  
Anhar Solichin
Keyword(s):  
Sex Ratio ◽  
Condition Factor ◽  
Secondary Data ◽  
Size Classes ◽  
Central Java ◽  
Length Relationship ◽  
Growth Properties ◽  
Thresher Shark ◽  
Males And Females ◽  
Average Size

ABSTRAK Hiu pahitan (Alopias superciliosus) merupakan salah satu spesies hiu yang terdapat di perairan selatan Jawa Tengah. Di Indonesia umumnya hewan ini sering tertangkap dengan alat tangkap rawai (longline). Penelitian ini bertujuan untuk mengetahui struktur ukuran, Lc50%, hubungan panjang berat, faktor kondisi, nisbah kelamin dan perkembangan produksi A. superciliosus di perairan selatan Jawa Tengah. Penelitian ini menggunakan metode deskriptif dan pengambilan sampel menggunakan metode simple sensus sampling yaitu pengambilan sample secara keseluruhan. Data yang digunakan adalah data panjang cagak, berat dan panjang klasper A. superciliosus. Dari hasil penelitian, diperoleh sampel A. superciliosus sebanyak 431 individu, terdiri dari 154 jantan dan 277 betina. Ukuran A. superciliosus yang didapatkan berkisar dari 92 – 211 cm. Meskipun hampir semua ukuran kelas diwakili pada kedua jenis kelamin (jantan dan betina), selang ukuran panjang 150 – 159 cm adalah kelas dengan jumlah tangkapan tertinggi, dan hasil tangkapan terendah pada ukuran kelas terkecil dan ukuran kelas terbesar. Ukuran rata-rata tertangkap (L50%) A. superciliosus jantan adalah 154 cm dan betina adalah 147 cm. Hubungan panjang berat A. superciliosus diperoleh persamaan W = 0,000004FL3,239. Hal tersebut menunjukkan bahwa sifat pertumbuhan dari A. superciliosus adalah allometrik positif yang berarti pertumbuhan berat lebih cepat dari pertumbuhan panjangnya. Nilai faktor kondisi A. superciliosus diperoleh  sebesar 1,066 yang berarti A. superciliosus memiliki badan yang kurang pipih. Nisbah kelamin antara jantan dan betina tidak seimbang yaitu 1 : 1,8. Perkembangan produksi A. superciliosus berdasarkan data sekunder selama enam tahun terakhir berfluktuatif. Puncak hasil tangkapan mengalami pergeseran, ada kecenderungan puncak hasil tangkapan terjadi pada bulan April – September. Kata kunci : Hiu pahitan; aspek biologi; produksi; Jawa Tengah                                                                                                  ABSTRACT Bigeye Thresher Shark (Alopias superciliosus) are one of the species of shark found in the southern sea of Central Java. In Indonesia many of these animals are often caught by longline fishing gear. This study aims to determine the size of the structure, Lc50%, weight-length relationship, condition factor, sex ratio and development of production A. superciliosus in southern sea of Central Java. This study used a descriptive method and sampling using simple methods census sampling is the taking of the sample as a whole. The data used is data forked length, weight and clasper length of A. superciliosus. From the research results, obtained samples of A. superciliosus as many as 431 people, consisting of 154 males and 277 females. The size of A. superciliosus obtained ranged from 92 – 211 cm. Although virtually all size classes represented in both sexes (males and females), in the range of sizes 150 – 159 cm is the class with the highest number of catches,  with very few specimens in the smallest and largest size classes. The average size caught (Lc50%) A. superciliosus male is 154 cm and female is 147 cm. A. superciliosus length relationship weight equation W = 0,000004FL3,239. It shows that the growth properties of A. superciliosus is a significant positive allometric weight growth faster than the growth in length. A. superciliosus condition factor value obtained for 1,066 which means A. superciliosus have a less flat body. Sex ratio between males and females are not balanced at 1 : 1.8. Developments A. superciliosus based secondary data for the last six years had been fluctuating. The highlight of the catch-shifted, there is a tendency to peak catches occurred in April – September. Keywords : Bigeye Thresher Shark; biological aspect; production; Central Java

scholarly journals Body weight-length relationships in giant otters (Pteronura brasiliensis) (Carnivora, Mustelidae)

2009 ◽  
Vol 52 (3) ◽  
pp. 587-591 ◽  
Author(s):  
Fernando César Weber Rosas ◽  
Carla Soares da Rocha ◽  
Gália Ely de Mattos ◽  
Stella Maris Lazzarini
Keyword(s):  
Body Weight ◽  
Amazon Region ◽  
Close Approximation ◽  
Length Relationship ◽  
In Captivity ◽  
Males And Females ◽  
Pteronura Brasiliensis ◽  
Relationship Of ◽  
The Relationship ◽  
Actual Size

Few giant otters (Pteronura brasiliensis) have been measured and weighed and its actual size is controversial in the literature. This study presents the weight-length relationship of Amazonian giant otters using 15 captive individuals. The maximum length and weight were 163cm and 22.5kg, and 162cm and 28.8kg, for the males and females, respectively. The weight-length relationships were not significantly different between the sexes (t = 0.658, d.f.=11, P>0.05) and can be expressed by the equation: W=1.48x10-5 L2.81. Considering that some of the giant otters used in this study were old individuals (more than 10 years old), and that all the animals analyzed were healthy, it is possible to assume that the weight-length relationships obtained are probably a close approximation of the relationship of giant otters of the Amazon region and can be used by institutions that keep this species in captivity as a base to quickly assess the animal's nutritive status.

scholarly journals ASPEK BIOLOGI DAN DINAMIKA POPULASI IKAN LAYANG BIRU (Decapterus macarellus Cuvier, 1833) DI PERAIRAN LAUT SULAWESI

2019 ◽  
Vol 11 (3) ◽  
pp. 137
Author(s):  
Achmad Zamroni ◽  
Adi Kuswoyo ◽  
Umi Chodrijah
Keyword(s):  
Sex Ratio ◽  
Growth Parameters ◽  
Economic Value ◽  
Gonad Index ◽  
Fork Length ◽  
Spawning Season ◽  
Fish Length ◽  
Population Parameters ◽  
Gonad Maturity ◽  
Fish Samples

Ikan layang biru (Decapterus macarellus) merupakan salah satu jenis ikan pelagis kecil yang dominan tertangkap dan mempunyai nilai ekonomi yang tinggi, terutama untuk daerah dengan perairan yang lebih oseanik seperti di perairan Indonesia bagian timur. Tujuan penelitian ini adalah untuk mengidentifikasi parameter populasi ikan layang biru khususnya tertangkap di Laut Sulawesi. Pengambilan sampel ikan untuk diukur panjang cagak dan diamati kematangan gonad dilakukan secara acak setiap bulan. Informasi parameter populasi yang diperoleh dalam penelitian ini adalah hubungan panjang-berat, nisbah kelamin, tingkat kematangan gonad, nilai L50% dan Lm, parameter pertumbuhan serta tingkat pemanfaatan. Hasil penelitian menunjukkan bahwa sebaran ukuran panjang cagak ikan (fork length = FL) berkisar antara 10,25 - 32,25 cm, pola pertumbuhannya bersifat allometrik negatif. Nisbah kelamin ikan layang biru antara jantan : betina tidak berimbang yaitu 1 : 1,963. Ikan layang biru yang tertangkap didominasi oleh ikan dalam kondisi kematangan gonad tingkat III, artinya gonad masih dalam kondisi berkembang. Berdasarkan analisis tingkat kematangan gonad dan nilai indeks gonad dapat diketahui bahwa puncak musim pemijahan ikan terjadi pada bulan Maret. Perbandingan nilai L50% dan Lm diperoleh (L50% > Lm), artinya secara umum ikan telah mengalami matang gonad sebelum ikan tersebut ditangkap. Nilai eksplotasi lebih tinggi dari nilai eksploitasi optimal 0,5 per-tahun. Diduga puncak rekruitmen yang terjadi pada bulan Juni berasal dari musim pemijahan yang terjadi pada bulan Maret.Mackerel scad (Decapterus macarellus) is one of the dominant small pelagic fish species with high economic value, especially for areas with more oceanic waters such as eastern Indonesia. The purpose of this study was to identify the population parameters of the Mackerel scad especially those caught in the Celebes Sea. Fish samples were randomly taken to measure for length measurements and gonad maturity observation every month. Information on population parameters obtained in this study is the length-weight relationship, sex ratio, gonad maturity level, L50% and Lm values, growth parameters, and exploitation rates. The results showed that the distribution of fish length range from 10.25 - 32.25 cm of fork length, with the growth pattern was negative allometric. The sex ratio between males: females was not balanced (1: 1,963). The Mackerel scad caught was dominated by fish in the condition of level III maturity, meaning that each gonad was in a developing condition. Based on the analysis of gonad maturity and gonad index, it can be estimated that the peak of the spawning season occurs in March. A comparison of the values of L50% and Lm obtained was L50% > Lm, meaning that in general, the fish has reached gonad ripening before they were caught. The exploitation rate was higher than the optimal exploitation value of 0.5 per year. It is likely that the peak of recruitment occurred in June came from the spawning season occurred in March.

scholarly journals Gonad Maturity and Fecundity of Bluecheek Silver Grunt (Pomadasys argyreus) in Palabuhanratu Bay, West Java

2020 ◽  
Vol 3 (1) ◽  
pp. 10-15
Author(s):  
Mona Agatha ◽  
Yonvitner ◽  
Rahmat Kurnia
Keyword(s):  
Sex Ratio ◽  
Condition Factor ◽  
Gonadosomatic Index ◽  
Gonadal Development ◽  
Gonad Maturity ◽  
Fish Samples ◽  
Males And Females ◽  
First Maturity ◽  
Partial Spawner ◽  
Fish Spawn

A total of 806 fish samples were collected from the catch of local fishermen. The sex ratio of Pomadasys argyreus was 1:0,90. Four stages of gonadal development were observed in males and females, which dominated by stage I and II (immature). The highest gonadosomatic index (GSI) in males was 1,14 in September, while in females was 1,80 in May. Length at first maturity of Pomadasys argyreus was 140,12 mm for males and 135,01 mm for females. The highest value of condition factor was 1,05 for males and 1,10 for females. This fish spawn partially (partial spawner) and estimated spawns throughout the year with a spawning peak in June.

scholarly journals LENGTH-WEIGHT RELATIONSHIP AND REPRODUCTION OF SULPHUR GOATFISH Upeneus sulphureus (Cuvier, 1829) AT PPI KALIANDA, SOUTH LAMPUNG

2021 ◽  
Vol 6 (2) ◽  
pp. 41-47
Author(s):  
M Aldhy Nur Pradana ◽  
Abdullah Aman Damai ◽  
Indra Gumay Yudha ◽  
Suparmono Suparmono
Keyword(s):  
Sex Ratio ◽  
Simple Random Sampling ◽  
Ideal Condition ◽  
Maturity Level ◽  
Gonad Maturity ◽  
Weight Relationship ◽  
Fish Samples ◽  
First Maturity ◽  
High Level ◽  
Relationship Of

Sulphur goatfish (Upeneus sulphureus) is the dominant caught with a fairly high level of utilization. This research aimed to analyze aspects of growth and reproduction sulphur goatfish caught by rampus nets landed at the fishing port of PPI Kalianda. Growth aspects that were observed included the length-weight, while the reproductive aspects observed is the sex ratio, gonad maturity level, and the size of sulphur goatfish at first maturity. This research was conducted in May-July 202 with the research method used simple random sampling method.  The fish samples obtained during the study were 600 individuals, the results showed that Sulphur goatfish had negative allometric growth. The equation for the long-weight relationship of sulphur goatfish is log W = -4,6 + 2,9 log L or W = 2,8x10-5L2,9. The sex ratio of sulphur goatfish in May and July were not 1: 1, while the ideal condition was achieved in June. The gonad maturity level distribution of sulphur goatfish was dominated by TKG III and IV for female, while male sulphur goatfish was dominated by TKG II and III. Size at first maturity of sulphur goatfish females was 169,1 ± 1,03mm.

Indeks Kondisi Kerang Bambu yang Didaratkan Di TPI Tasik Agung, Rembang, Jawa Tengah

2021 ◽  
Vol 10 (2) ◽  
pp. 200-204
Author(s):  
Aulia Dessy Ramadhani ◽  
Sri Redjeki ◽  
Jusup Suprijanto
Keyword(s):  
Economic Value ◽  
Condition Index ◽  
Total Weight ◽  
Size Selectivity ◽  
Weight Relationship ◽  
Central Java ◽  
Lack Of Information ◽  
Length Width ◽  
Increasing Demand ◽  
Index Value

Kerang bambu merupakan  salah  satu  jenis  Moluska  dari  famili  Solenidae  yang mempunyai nilai ekonomis. Potensi sumberdaya hayati kerang bambu ini menarik untuk diteliti lebih dalam mengingat permintaannya yang semakin meningkat. Upaya pengambilan kerang bambu jika tidak diimbangi dengan selektivitas ukuran dan dilakukan penangkapan secara terus-menerus maka dapat mengakibatkan hilangnya organisme ini. Mengingat masih minimnya informasi mengenai kerang bambu (Solen sp.) sehingga perlu dilakukan penelitian mengenai morfometri, hubungan panjang dan berat serta indeks kondisi kerang bambu. Tujuan dari penelitian ini adalah mengetahui hubungan panjang cangkang dan berat total serta nilai indeks kondisi dari kerang bambu (Solen sp.). Penelitian ini dilakukan dengan mengukur aspek morfometri seperti panjang, lebar dan berat total. Hasil penelitian menunjukkan hubungan antara panjang cangkang dan berat total memiliki nilai b = 3,99 dan R2=0.5742. Nilai indeks kondisi kerang bambu (Solen sp.) dari TPI Tasik Agung, Rembang, Jawa Tengah pada kategori kurus sebesar 1.9% dengan jumlah 1 ekor, kategori sedang sebesar 13,3% dengan jumlah 67 ekor dan kategori gemuk sebesar 86.4% dengan jumlah 433 ekor.Bamboo clams are type of mollusc from the Solenidae family that have economic value. The potential of bamboo clam is interesting to be investigated more deeply considering its increasing demand. Efforts to collect bamboo clams of it’s not balanced with size selectivity and continuous fishing can result in the loss of these organisms. Given the lack of information on bamboo clams (Solen sp.) it is necessary to conduct research on morphometry, length and weight relationship and condition index of bamboo clams. The purpose of this study was to determine condition index value of bamboo clams (Solen sp.). This research was conducted by measuring morphometric aspects such as length, width, and total weight. The result showed that the condition index value of bamboo clams (Solen sp.) in TPI Tasik Agung, R, Central Java in the thin category was 1.9% with 1 individuals, the moderate category was 13.3% with 67 individuals and the fat category was 86.4% with 433 individuals.

scholarly journals Distribusi Scylla spp. di perairan estuari Sungai Donan Segara Anakan Bagian Timur, Cilacap

2021 ◽  
Vol 2 (1) ◽  
Author(s):  
Sulistiono Sulistiono ◽  
Nurul Musyariafah Yahya ◽  
Etty Riani
Keyword(s):  
Economic Value ◽  
Scylla Serrata ◽  
Mangrove Forests ◽  
Mud Crab ◽  
Mangrove Species ◽  
Central Java ◽  
Rhizophora Apiculata ◽  
Mangrove Ecosystems ◽  
Avicennia Alba ◽  
Mangrove Crabs

Mangrove forests are ecosystems that make up coastal areas and river estuaries. The examples of mangrove ecosystems found in Indonesia are in Segara Anakan, Central Java. One of the aquatic biota with the economic value found in the mangrove forest ecosystem is the mud crab (Scylla spp.). The purpose of this study was to assess the distribution of mangrove crabs (Scylla spp.) to the presence of mangrove species in the mouth of the Donan River, Segara Anakan. A sampling of crabs and observations of mangrove vegetation were carried out at five stations spread from the river to the sea. The results showed that there were three types of mangrove crabs caught in the vicinity of the study, namely Scylla tranquebarica, S. olivacea, and S. serrata. The types of mangroves found include Rhizophora apiculata, R. mucronata, Avicennia rumphiana, A. alba, A. officinalis, and Nypa. Regression analysis showed that mangrove density correlated with the abundance of Scylla tranquebarica and Scylla olivacea, but contradicts the abundance of Scylla serrate. PCA analysis showed that the Crab species Scylla tranquebarica and Scylla olivacea were associated with mangroves of Avicennia alba, Avicennia rumphiana, and Rhizophora apiculata. Meanwhile, Scylla serrata crabs are associated with Avicennia officinalis.

scholarly journals Reproduction biology of Abe's flyingfish, Cheilopogon abei Parin, 1996 in Geser East Seram Strait Waters

2021 ◽  
Vol 21 (2) ◽  
pp. 167-184
Author(s):  
Friesland Tuapetel
Keyword(s):  
Fork Length ◽  
Biological Information ◽  
Female Fish ◽  
Male Fish ◽  
Gonad Maturity ◽  
Gill Net ◽  
Flying Fish ◽  
Reproduction Biology ◽  
Fish Samples ◽  
June July

Eco-biological information of Cheilopogon abei in Geser Streit is unknown. The objective of this research is to observe the sex ratio, first size maturity, gonad maturity and gonado somatic index (GSI) with fecundity of flying fish Ch abei in Geser East Seram Strait waters. Sampling was done for ten months started from February to November 2018, using gill net measuring 1.50 inch. All fish samples were measured in fork length and weighted so dissected to make observations on the level of gonad maturity and the number of eggs in female fish. A total of 682 flying fish was found during the study with a fork length range of 182.6-243.3 mm and a weight of 73.98-115.45 g. The results of the analysis showed that the proportion of the number of male fish was less than that of the female fish for almost every month of observation. The first size gonad mature of male and female is 210.5 mm and 214.1 mm FL. The gonad maturity index of male fish ranges from 0,963-7,967 and female fish ranges 1,315-8,069, the total fecundity is 2321-9438 eggs. Gonads of ripe fish in each month of observation. The spawning peak of Ch abei takes place in June-July and it is hoped that no arrests will be made in both months, to ensure the sustainability of the stock.

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