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

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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Length-Weight Relationship and Gonad Maturity of Marble sleeper Oxyeleotris marmorata (Bleeker, 1852) in Tondano Lake North Sulawesi

JURNAL PERIKANAN DAN KELAUTAN TROPIS ◽

10.35800/jpkt.11.1.2020.29954 ◽

2020 ◽

Vol 11 (1) ◽

pp. 23

Author(s):

Ikky Ahdian Umage ◽

Nego E. Bataragoa ◽

Jety K. Rangan ◽

Anneke V. Lohoo ◽

Janny D. Kusen ◽

...

Keyword(s):

Condition Factor ◽

Growth Patterns ◽

Mature Male ◽

Allometric Growth ◽

Female Fish ◽

Male Fish ◽

Gonad Maturity ◽

Weight Relationship ◽

North Sulawesi ◽

Fish Samples

The purpose of this study was to determine the length-weight relationship and gonad maturity of Betutu fish (Oxyeleotris marmorata) in Lake Tondano. Fish samples were caught using gill nets and lift nets in Lake Tondano. Total catches of 240 individuals. The legth-weight relation of male fish is W = 0.0094 L3.14 positive allometric growth pattern. Female female fish obtained W = 0.0104 L3.11 positive allometric growth patterns. The condition factor for male fish is 1.46 male and 1.47 female respectively. All levels of gonad maturity (I, II, III, IV and V) were found in each sample both in August and September. The size of the first mature male male fish is 219 ± 3 mm (range in size 216-222 mm) and female fish 171 ± 3 (range in size 169-174 mm).Keywords: Length-Weight, gonad maturity, Tondano Lake ABSTRAKTujuan penelitian ini untuk mengetahui hubungan panjang-berat dan kematangan gonad ikan Betutu (Oxyeleotris marmorata) yang ada di danau Tondano. Sampel ikan ditangkap menggunakan jaring insang dan jaring angkat di danau Tondano. Total hasil tangkapan 240 individu. Hubungan panjang-berat ikan betutu jantan yaitu W = 0,0094L3,1394 pola pertumbuhan allometrik positif. Ikan betutu betina didapatkan W = 0,0104L3,1137 pola pertumbuhan allometrik positif. Faktor kondisi ikan betutu jantan masing-masing sebesar 1,46 ikan jantan dan 1,47 ikan betina. Seluruh tingkat kematangan gonad (I, II, III, IV dan V) ditemukan pada setiap sampel baik pada bulan agustus maupun bulan September. Ukuran pertama kali matang ikan betutu jantan yaitu 219 ±3 mm (kisaran ukuran 216-222 mm) dan ikan betina 171±3 (kisaran ukuran 169-174 mm)Kata Kunci: Panjang-berat, kematangan gonad, Danau Tondano

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Aspek biologi reproduksi ikan pari blentik Neotrygon kuhlii di perairan Selat Sunda

Jurnal Akuakultur Indonesia ◽

10.19027/jai.15.2.189-197 ◽

2016 ◽

Vol 15 (2) ◽

pp. 189

Author(s):

Salma Abubakar ◽

Mennofatria Boer ◽

, Sulistiono

Keyword(s):

Condition Factor ◽

Feeding Habit ◽

Reproductive Characteristic ◽

Female Fish ◽

Male Fish ◽

Gonad Maturity ◽

Characteristic Condition ◽

Intensive Fishing ◽

Important Fish ◽

Better Than

ABSTRACT Bluespotted stingray fish Neotrygon kuhlii is the important fish economically captured from Sunda Strait. Intensive fishing could decrease bluespotted stingray stock. This study was aimed to know the length-weight, and reproduction characteristic. The reproduction characteristic covered the size of first gonad maturity, the level and also index of gonad maturity of bluespotted stingray fish in Labuan Fishing Dock, Banten. The result showed the equilibrium of length-weight of female fish was about W=0.0007L2,1496. Meanwhile, the male fish was about W=0.0000L2.251. Male fish was better than female fish according their relatively condition factor. Decreasing of the factor condition was caused by feeding habit to grow the reproduction cells. The size of first gonad maturity for the female and male respectively were about 550–799 dan 550–760 mm. The highest level maturity even female or male was on IV achieved in June and Juli 2013. Increasing the index (IKG) was followed by the level of gonad maturity. Kata kunci: bluespotted stingray, reproductive characteristic, condition factor, Sunda Strait ABSTRAK Ikan pari blentik Neotrygon kuhlii merupakan salah satu sumberdaya ikan ekonomis penting dan sebagai hasil penangkapan di Selat Sunda. Penangkapan yang intensif dapat mengakibatkan penurunan stok ikan pari blentik. Penelitian ini bertujuan untuk mengetahui panjang bobot, dan karakteristik reproduksi. Karaktersitik reproduksi itu sendiri meliputi ukaran pertama kali matang gonad, tingkat kematangan gonad dan indeks kematangan gonad ikan pari blentik di perairan Selat Sunda yang didaratkan di Pelabuhan Perikanan Pantai (PPP) Labuan, Banten. Berdasarkan hubungan panjang bobot ikan pari betina diperoleh persamaan hubungan panjang dan bobot untuk ikan pari blentik betina W=0,0007L2,1496. Sementara itu pada ikan jantan, persamaan hubungan panjang bobot W=0,0000L2,251. Ikan pari blentik jantan mempunyai faktor kondisi yang relatif lebih besar daripada ikan pari betina. Penurunan nilai faktor kondisi disebabkan bagian terbesar dari makanan yang dikonsumsi digunakan untuk perkembangan sel-sel reproduksinya. Kisaran ukuran pertama kali matang gonad ikan pari blentik betina 550–799, sedangkan untuk ikan pari jantan adalah dengan kisaran panjang total tubuh 550–760 mm. Tingkat kematangan gonad tertinggi ikan betina dan jantan (TKG IV) ditemukan pada bulan Juni dan Juli 2013. Indeks kematangan gonad (IKG) ikan pari semakin meningkat seiring dengan meningkatnya TKG. Keywords: ikan pari blentik, karakteristik reproduksi, faktor kondisi, Selat Sunda

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PENDUGAAN UKURAN PERTAMA KALI MATANG GONAD IKAN KEMBUNG (Rastrelliger sp) DI PERAIRAN DESA SIDANGOLI DEHE KECAMATAN JAILOLO SELATAN KABUPATEN HALMAHERA BARAT

JURNAL BIOLOGI TROPIS ◽

10.29303/jbt.v19i1.1008 ◽

2019 ◽

Vol 19 (1) ◽

Author(s):

Salim Abubakar ◽

Riyadi Subur ◽

Irmalita Tahir

Keyword(s):

Random Sampling ◽

Fork Length ◽

Minimum Size ◽

Gonad Maturity ◽

Gill Net ◽

First Time

Abstrak:Tujuan dari penelitian ini adalah untuk mengetahui ukuran pertama kali matang gonad dan ukuran mata jaring gillnet untuk penangkapan ikan kembung (Rastrelliger sp) di perairan Sidangoli Dehe. Pengambilan sampel dengan mengikuti kegiatan operasi penangkapan.dengan nelayan. Operasi penangkapan ikan dilakukan sebanyak 2 kali setiap minggu dan dilakukan selama satu bulan. Hasil tangkapan diambil secara acak (random sampling). Hasil tagkapan selanjutnya dilakukan pengukuran panjang cagak dan body girth. Penentuan tingkat kematangan gonad (TKG) yang dilakukan secara visual dengan melihat bentuk, warna serta perkembangan isi gonad.Hasil penelitian diperoleh ukuran pertama kali matang gonad ikan kembung (Rastrelliger sp) yang tertangkap di perairan Desa Sidangoli Dehe dengan kisaran panjang cagak 250,7 mm sedamgkan ukuran mata jaring insang minimum yang sebaiknya digunakan untuk penangkapan ikan kembung (Rastrelliger sp) yaitu 11,8 cm (4,6 inchi). Kata Kunci : Matang gonad, mata jaring, Rastrelliger sp, Sidangoli Dehe Abstract: The purpose of this study is to determine the size of first-time gonads and the size of gill-net for catching mackerel (Rastrelliger sp) in Dehe Sidangoli waters. Sampling by taking part in arrest operationswith fishermen. Fishing operations are carried out twice a week and carried out for one month. The catch is taken randomly. The result of the next tag is the measurement of the fork length and body girth. Determination of the level of gonad maturity (TKG) that is done visually by looking at the shape, color and development of gonadal contents. The results showed that the first size of mackerel gonad (Rastrelliger sp) that was caught in the waters of Sidangoli Dehe Village with a fork length of 250.7 mm was the minimum size of the gill-net which should be used for catching mackerel (Rastrelliger sp) which was 11.8 cm (4.6 inches). Keywords: Gonad mature, mesh, Rastrelliger sp, Sidangoli Dehe

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Growth Aspects of Scad Decapterus macrosoma on Fish Point Sanggeng-Manokwari Regency

JURNAL SUMBERDAYA AKUATIK INDOPASIFIK ◽

10.30862/jsai-fpik-unipa.2018.vol.2.no.1.30 ◽

2018 ◽

pp. 15

Author(s):

Yusmina E. Randongkir ◽

Fanny Simatauw ◽

Tutik Handayani

Keyword(s):

Regression Coefficient ◽

Length Distribution ◽

Fish Distribution ◽

Coefficient Of Determination ◽

Female Fish ◽

Male Fish ◽

Flying Fish ◽

Regression Test ◽

Close Relationship ◽

Descriptive Method

This study aimed to find the fish distribution in size, heavy - long, and factors condition. This research was doing in March until June 2015. The methods that used to measure are descriptive method and technique observation. The total of sample fish obtained as many as 500 tail. The measure ment of length distribution obtained for individuals male which ranges are 109 -303 mm and 125 – 299 for female. Based on the results of correlation analysis between the length and weight of the fish is all positive and very strong, female fish has a correlation coefficient value 0.6184 with coefficient of determination (R2) 0.3824 and male fish 0,5775 with coefficient of determination (R2) 0,3335. This means there is a close relationship between the weight and body length of the overpass. The result of regression test between the length and weight of the female flying fish is W = 0.0015L2.0321 and the male glider is W = 0.004327 L1.8417, followed by the test of value b (regression coefficient value) obtained b <3 which means the growth of fish pattern shown allometric negative. It means that the length of body rises faster than their weight. In term of factors condition Decapterus sp. Classified in less flattened fish.

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REPRODUCTION BIOLOGY OF GOLDBAND GOATFISH Upeneus moluccensis Bleeker, 1855 IN SUNDA STRAIT

Jurnal Ilmu dan Teknologi Kelautan Tropis ◽

10.28930/jitkt.v8i2.15836 ◽

2017 ◽

Vol 8 (2) ◽

pp. 701

Author(s):

Herman Sarumaha ◽

Rahmat Kurnia ◽

Isdradjad Setyobudiandi

Keyword(s):

Reproductive Organs ◽

Maturity Stage ◽

Gonad Maturity ◽

Reproduction Biology ◽

Fish Samples ◽

Aquatic Resources Management ◽

First Maturity ◽

Biology Laboratory ◽

Fisheries Biology ◽

Size At First Maturity

This research was to analyze the reproduction biology of the goldband goatfish in the Sunda Strait as a reference for appropriate and sustainable management. Sampling was collected from April to August 2015. The samples from Sunda Strait were obtained from the fisherman yielded in the Coastal Fishing Port Labuan, Pandeglang, Banten Province. The sample was analyzed in Fisheries Biology Laboratory, Aquatic Resources Management Department, Fisheries and Marine Science Faculty, Bogor Agricultural University. Fish samples were measured, weighed and dissected, then morphologically observed for the reproductive organs. Samples obtained during the research were 811 specimen with the total length of 82-219 mm. Sex ratio among females and males were 1.5:1. The size at first maturity of females and males were 124 mm and 120 mm, respectively. Females were dominated by gonad maturity stage III and I, while for males dominated by gonad maturity stage I and II. Based on the composition of the TKG and IKG values each month, spawning season of the goldband goatfish in the Sunda Strait occurred in April and August. Fecundity obtained ranged 955-59.356 eggs with partial spawning type.

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REPRODUCTION BIOLOGY EASTERN LITTLE TUNA Euthynnus affinis IN THE SUNDA STRAIT

Jurnal Ilmu dan Teknologi Kelautan Tropis ◽

10.28930/jitkt.v8i2.15835 ◽

2017 ◽

Vol 8 (2) ◽

pp. 689

Author(s):

Vera Ardelia ◽

Yon Vitner ◽

Mennofatria Boer

Keyword(s):

Reproductive Potential ◽

Fishing Effort ◽

Pelagic Fish ◽

Growth Patterns ◽

Optimum Level ◽

Maturity Level ◽

Gonad Maturity ◽

Reproduction Biology ◽

Fish Samples ◽

First Time

Eastern little tuna is small pelagic fish that has high economic value. Fishing effort of the eastern little tuna for the last eight years have also exceeded the optimum level. To ensure the sustainability of the pelagic fish resources, it is necessary to perform the management efforts. This study was to observe reproductive Biology of the eastern little tuna, as one of the necessary information in the management of fishery resources. Fish -samples were collected from the catch of local fishermen in April-August 2015. Based on T test (α = 0,05), the eastern little tuna males and females showed positive allometric growth patterns. Average size of the first time caught fish for the female (308,37 mm) and male (280,63 mm) was smaller than that observed in those first time maturity gonads (ranging 407-408 mm for female and 438-440 mm for male). The eastern little tuna spawn gradually or partially (partial spawner), and have high reproductive potential with fecundity ranged 17.814-560.792 eggs (average fecundity: 109.807) in fish of 285-630 mm body length. The gonad maturity level of the eastern Little Tuna is dominated by Gonad maturity level I and II,(immature). The value of gonad maturity for the female level is about 0,0769-0,6879 and the male is 0,1913-0,3000.

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REPRODUCTION BIOLOGY OF GOLDBAND GOATFISH Upeneus moluccensis Bleeker, 1855 IN SUNDA STRAIT

Jurnal Ilmu dan Teknologi Kelautan Tropis ◽

10.29244/jitkt.v8i2.15836 ◽

2017 ◽

Vol 8 (2) ◽

pp. 701-711 ◽

Cited By ~ 1

Author(s):

Herman Sarumaha ◽

Rahmat Kurnia ◽

Isdradjad Setyobudiandi

Keyword(s):

Reproductive Organs ◽

Maturity Stage ◽

Gonad Maturity ◽

Reproduction Biology ◽

Fish Samples ◽

Aquatic Resources Management ◽

First Maturity ◽

Biology Laboratory ◽

Fisheries Biology ◽

Size At First Maturity

This research was to analyze the reproduction biology of the goldband goatfish in the Sunda Strait as a reference for appropriate and sustainable management. Sampling was collected from April to August 2015. The samples from Sunda Strait were obtained from the fisherman yielded in the Coastal Fishing Port Labuan, Pandeglang, Banten Province. The sample was analyzed in Fisheries Biology Laboratory, Aquatic Resources Management Department, Fisheries and Marine Science Faculty, Bogor Agricultural University. Fish samples were measured, weighed and dissected, then morphologically observed for the reproductive organs. Samples obtained during the research were 811 specimen with the total length of 82-219 mm. Sex ratio among females and males were 1.5:1. The size at first maturity of females and males were 124 mm and 120 mm, respectively. Females were dominated by gonad maturity stage III and I, while for males dominated by gonad maturity stage I and II. Based on the composition of the TKG and IKG values each month, spawning season of the goldband goatfish in the Sunda Strait occurred in April and August. Fecundity obtained ranged 955-59.356 eggs with partial spawning type.

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

BAWAL Widya Riset Perikanan Tangkap ◽

10.15578/bawal.11.3.2019.137-149 ◽

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.

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Plasma glucose levels of the white sucker, Catostomus commersonii, and the northern pike, Esox lucius

Canadian Journal of Zoology ◽

10.1139/z68-110 ◽

1968 ◽

Vol 46 (4) ◽

pp. 797-803 ◽

Cited By ~ 13

Author(s):

W. C. Mackay ◽

D. D. Beatty

Keyword(s):

Plasma Glucose ◽

Northern Pike ◽

White Sucker ◽

Female Fish ◽

Lower Plasma ◽

Male Fish ◽

Blood Samples ◽

Glucose Levels ◽

Gill Net ◽

Lower Plasma Glucose

The level of plasma glucose was investigated in specimens of white sucker and northern pike which had been caught at different times of the year by both gill net and trap net. Blood samples were collected for analysis within 1 minute of the time the fish were first handled.Male white suckers undergo a significant seasonal change in plasma glucose levels but female suckers do not. The plasma glucose of the female fish of both species was more variable than that of male fish sampled at the same time. At certain times of the year male fish of both species had a significantly lower plasma glucose concentration than female fish. Fish which had been caught by gill net or held in the laboratory were found to have higher, more variable plasma glucose levels than fish which were sampled from the trap net.

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Biological Aspects of Waanders’s Hard-lipped Barbs (Osteochilus waandersii) in Tambatan River, North Sumatera, Indonesia

BIOEDUSCIENCE ◽

10.22236/j.bes/526745 ◽

2021 ◽

Vol 5 (2) ◽

Author(s):

Siti Jurniah Nasution ◽

Rivo Hasper Dimenta

Keyword(s):

Sampling Method ◽

Growth Patterns ◽

Maturity Stage ◽

Maturity Level ◽

Female Fish ◽

Male Fish ◽

Gonad Maturity ◽

The Family ◽

Biological Aspects

Background: Waanders’s hard-lipped barbs or scientifically known as Osteochilus waandersii belong to the family Cyprinidae with the potamodromous category. This fish can be found in the Tambatan river. It has the potential for commercial consumption or ornamental fish. Methods: This study was conducted in the Tambatan river from November to January 2021. The determination of three research stations was carried out using a purposive sampling method. Sampling was undertaken using cast nets. Furthermore, data analyzed were growth patterns, condition factors, and gonad maturity levels. Results: The growth patterns of male (1.944) and female (2.379) Osteochilus waandersii were in a negative allometric category. Besides, The Fulton's condition factor for male fish ranged from 0.42 - 3.43 with an average of 1.05, while that for female fish ranged from 0.59 - 3.67 with an average of 1.47. The result of the observation on the gonad maturity level for male and female O. waandersii in the Tambatan river indicated that they were dominated by fish with gonad maturity stage I (immature). Conclusions: Waanders’s hard-lipped barbs O. waandersii found were in the stage towards the mature level.

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