scholarly journals BEBERAPAASPEKBIOLOGI IKANKUNIRAN (Upeneus sulphureus) DI PERAIRANTEGALDANSEKITARNYA

2017 ◽  
Vol 3 (4) ◽  
pp. 261
Author(s):  
Duranta Diandria Kembaren ◽  
Tri Ernawati
Keyword(s):  
Sex Ratio ◽  
Frequency Distribution ◽  
Condition Factor ◽  
Growth Characteristic ◽  
Demersal Fish ◽  
Maturity Stage ◽  
Gonad Maturity ◽  
Level 3 ◽  
Biological Aspects ◽  
First Maturity

Ikan kuniran (Upeneus sulphureus)merupakan salah satu ikan demersal dari familiMullidae banyak tertangkap di perairan Laut Jawa. Penelitian ini tentang beberapa aspek biologi ikan kuniran di perairan Tegal dan sekitarnya dilakukan pada bulan Maret, April, dan Agustus 2009. Penelitian ini bertujuan untuk mengkaji beberapa aspek biologi ikan kuniran, seperti nisbah kelamin, sebaran frekuensi panjang, hubungan panjang dan bobot, tingkat kematangan gonad, panjang pertama kali matang gonad (length at first maturity), dan faktor kondisi. Ikan yangdiamati 358 ekor yang terdiri atas 170 jantan dan 188 betina. Perbandingan jumlah ikan jantan dan betinamenunjukanrasio kelamin yang tidak seimbang. Berdasarkan atas sebaran frekuensi panjang, ikan dengan panjang 9 cmFL mendominansi hasil tangkapan pada bulan Maret dan April dan pada bulan Agustus didominansi ikan dengan panjang 11 cmFL. Pertumbuhan ikan kuniran pada bulan Maret bersifat allometrik negatif, sedangkan pada bulan April danAgustus bersifat isometrik.Analisis tingkat kematangan gonad menunjukan bahwa pada bulan Agustus banyak ditemukan tingkat kematangan gonad I dan II dan pada bulanMaret banyak ditemukan tingkat kematangan gonad III dan IV. Ikan kuniran diduga pertama kali matang gonad pada ukuran panjang 9,87 cmFL. Faktor kondisi menunjukan tidak ada perbedaan antara bulan Maret, April, dan Agustus. The silver goatfish (Upeneus sulphureus) is demersal fish which caught excessively in the Java Sea and taxonomically belong to the family Mullidae. Some biological aspects of the silver goatfish in Tegal and adjacent waters were studied on March, April, and August in 2009. The objective of this research were to know some biological aspects, i.e. sex ratio, length frequency distribution, length weight relationship, gonad maturity stage, length at first maturity, and condition factor. A total of 358 fishes that consisted of 170 males and 188 females were examinated their biological aspects. The composition of male and female showed an unequal sex ratio. According to the lenght frequency distribution, the fishes of 9 cmFL were dominant onMarch and April, while on August was dominated by the fishes of 11 cmFL. The growth characteristic of the silver goatfish were allometric negative on March and isometric on April and August. Gonad maturity stage level 1 and 2 were dominant on August and level 3 and 4 onMarch. Lenght at first maturity (Lm) of silver goatfish were 9,87 cmFL. The condition factor showed that there is no difference on March, April, and August.

scholarly journals BIOLOGI REPRODUKSI SELAR BENTONG (Selar crumenophthalmus Bloch, 1793) DI PERAIRAN KWANDANG, GORONTALO UTARA

2019 ◽  
Vol 10 (3) ◽  
pp. 169 ◽  
Author(s):  
Umi Chodrijah ◽  
Ria Faizah
Keyword(s):  
Sex Ratio ◽  
Maturity Stage ◽  
Artisanal Fishery ◽  
Gonad Maturity ◽  
Weight Relationship ◽  
North Sulawesi ◽  
Multiple Spawner ◽  
Biological Reproduction ◽  
First Maturity ◽  
Relationship Of

Ikan selar bentong (Selar crumenophthalmus Bloch, 1793) merupakan salah satu ikan ekonomis penting yang tertangkap di perairan Kwandang, Sulawesi Utara. Penelitian ini bertujuan untuk mengetahui biologi reproduksi ikan selar bentong. Pengumpulan data panjang berat, jenis kelamin dan tingkat kematangan gonad dilakukan dari periode Februari hingga November 2017. Jumlah contoh ikan yang diamati sebanyak 3.820 ekor. Hasil penelitian ini diperoleh persamaan hubungan panjang-berat ikan selar bentong yang diukur yaitu W = 0,0092 L3,1857. Nilai b dari persamaan ini adalah 3,18 yang mengindikasikan bahwa pola pertumbuhannya bersifat isometrik. Ukuran pertama kali matang gonad (Lm) adalah 17,69 cmFL. Rasio kelamin antara betina terhadap jantan yaitu 1 : 1,2. Musim pemijahan atau bersifat multiple spawner diduga terjadi antara Bulan November – Februari.Bigeye scad (Selar crumenophthalmus Bloch, 1793) was one of the important economic species in the artisanal fishery in Kwandang waters North, Sulawesi. The aim of this study was to determine the biological reproduction of big eye scad in the Kwandang waters, Sulawesi Sea. Data collection of lengths and weights, sex, and the gonad maturity stage were done between January-November 2016. A total of 3820 specimens was collected al together and examined in the study. The result showed that length-weight relationship for big eye scad were W = 0,0092 L3,1857. The exponent values (b slope) of length-weight relationship of big eye scad was 3,185 indicating isometric growth pattern. The length at first maturity (Lm) for bigeye scad was 17,69 cmFL. The sex-ratio between female and male was 1 : 1.2. The spawning season was estimated between November and February (multiple spawner).

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 ASPEKBIOLOGI IKANKURISI (Nemipterus japonicus) DI PERAIRANTELUKBANTEN

2016 ◽  
Vol 8 (1) ◽  
pp. 21
Author(s):  
Selvi Oktaviyani ◽  
Mennofatria Boer ◽  
Yonvitner Yonvitner
Keyword(s):  
Fisheries Management ◽  
Average Length ◽  
Maturity Stage ◽  
Allometric Growth ◽  
Fishing Activity ◽  
Fish Resources ◽  
Nemipterus Japonicus ◽  
Males And Females ◽  
Biological Aspects ◽  
First Maturity

<p>Ikan kurisi (<em>Nemipterus japonicus</em>) merupakan salah satu sumber daya ikan ekonomis penting di Perairan Teluk Banten dan banyak didaratkan di Pelabuhan Perikanan Nusantara (PPN) Karangantu, Banten. Intensitas penangkapan yang tinggi akan menyebabkan tangkap lebih (<em>overfishing</em>), sehingga mengancam kelestarian ikan kurisi. Penelitian ini bertujuan untuk mengetahui beberapa aspek biologi ikan kurisi di Perairan Teluk Banten, seperti struktur ukuran panjang, rasio kelamin, hubungan panjang berat, tingkat kematangan gonad, ukuran panjang rata-rata tertangkap (Lc) dan ukuran pertama kali matang gonad (Lm). Informasi yang diperoleh dapat menjadi bahan pertimbangan dalam kegiatan pengelolaan perikanan. Lokasi pengambilan contoh dilakukan di Pelabuhan Perikanan Nusantara (PPN) Karangantu, Banten dari bulan Mei hingga Agustus 2012. Hasil penelitian menunjukkan bahwa ukuran panjang total ikan kurisi<em> </em>berkisar antara 98 dan 211 mm. Perbandingan kelamin jantan dan betina dalam keadaan seimbang dan memiliki pola pertumbuhan allometrik negatif yang menunjukkan pertumbuhan panjang lebih cepat dibandingkan pertumbuhan beratnya. Lebih dari 50% ikan-ikan yang diamati baik jantan maupun betina selama bulan pengamatan belum matang gonad (<em>immature</em>).  Ukuran pertama kali matang gonad adalah 196 mm sedangkan ukuran panjang rata-rata tertangkap adalah 146 mm. Banyaknya ikan yang tertangkap dalam ukuran kecil (kurang dari panjang pertama kali matang gonad) akan mengganggu kelestarian ikan kurisi.</p><p><em><br /></em></p><p><em>Japanese threadfin bream </em>(Nemipterus japonicus<span style="text-decoration: underline;">)</span><em> is one of the most important economical fish resources in the Gulf of Banten and many landed at Archipelago Fishing Port (PPN) of Karangantu. High intensity of fishing activity can cause an overfihing, and threat sustainability of japanese threadfin bream. The research was aimed to determine some biological aspects of japanese threadfin bream in the Gulf of Banten, such as structure of the length, sex ratio, length-weight relationship, gonad maturity stage, the average length of captured (Lc) and the length of first maturity (Lm). It is believed that the collected information can be taken into consideration in the fisheries management activities. The sample was collected at PPN Karangantu, Banten from May to August 2012. The result showed that the length of </em><em>this fish </em><em>ranged between 98 and 211 mm. Ratio of male and female is balance and have negative allometric growth pattern show that the length of growth is more faster than the weight of growth. More than 50% of fish sample both males and females were immature gonads. During observation, length of  first maturity was 196 mm and the average length of captured was 146 mm. </em><em>Many fishes caught was smaller than Lm, It will interfere the sustainability of japanese threadfin bream.</em></p>

scholarly journals Distribution, Condition and Gonad Maturity of the Invasive Pacific Oysters (Crassostrea Gigas, Thunberg 1793) in Cimanuk Delta, Indramayu, West Java, Indonesia

Omni-Akuatika ◽  
2017 ◽  
Vol 13 (2) ◽  
Author(s):  
Selia Hermawati ◽  
Sulistiono Sulistiono ◽  
Agustinus M Samosir
Keyword(s):  
Distribution Pattern ◽  
Crassostrea Gigas ◽  
Brackish Water ◽  
Pacific Oyster ◽  
Condition Factor ◽  
Maturity Stage ◽  
West Java ◽  
Gonad Maturity ◽  
Pacific Oysters ◽  
The Pacific

Pacific oyster (Crassostrea gigas) is an invasive species which is able to adapt a wide range of environmental conditions. The study was conducted from August to October 2014. Objective of this study was to asses the distribution pattern, condition and gonad maturity length (Lm 50%) of the Pacific oysters in mangrove ecosystem of Cimanuk Delta, Indramayu, West Java, Indonesia.  This study was conducted in two adjacent areas:  Pabean Ilir and Pagirikan subdeltas. The oysters were collected from the estuary, brackish water ponds and the coastal flat, and  observed for their abundance, total length (mm) and weight (g). Morphological and histological methods were used to estimate the gonad maturity stage. Analysis were carried out to estimate distribution pattern and condition factor. According to the study, the Pacific oyster distribution pattern was clumped. The condition factor of the oyster was higher in the brackish water pond and estuary than in the coastal flat.  The Pacific oyster was found in gonad maturity stage (GMS) I – IV. The oyster was hermaprodit protandry and had length maturity (Lm 50%) of 47,46-48,43 mm (male) and 75,27-75,50  mm (female). 

scholarly journals Biological aspects of Longfin Mojarra (Pentaprion longimanus, Cantor 1849) in north coast of Central Java, Indonesia

2018 ◽  
Vol 19 (2) ◽  
pp. 683-689
Author(s):  
DIAN OKTAVIANI ◽  
RIA FAIZAH ◽  
DUTO NUGROHO
Keyword(s):  
Sex Ratio ◽  
Fish Species ◽  
Average Length ◽  
Gonadosomatic Index ◽  
Demersal Fish ◽  
The Body ◽  
North Coast ◽  
Weight Relationship ◽  
Central Java ◽  
Biological Aspects

Oktaviani D, Faizah R, Nugroho D. 2018. Biological aspects of Longfin Mojarra (Pentaprion longimanus, Cantor 1849) in north coast of Central Java, Indonesia. Biodiversitas 19: 683-689. Longfin Mojarra (Pentaprion longimanus) locally named as rengganis, is a demersal fish species that is commonly caught in Scottish seine fisheries off the north coast of Java. The fisheries are in heavily harvest level since decades. The aim of this study was to observe the biological aspects of this species. Observations were made between August 2014-July 2015 from Tegal fishing port, western part of north coast central Java. General life-history parameters were measured, i.e., monthly length frequency for 1876 fishes, among them 573 specimens were observed for length-weight relationship, including 541 specimens for sex ratio and maturity stages. Fulton index, Gonadosomatic index, sex ratio and estimated length at first mature were analyzed. The result showed fish size ranged between 7.4 to 15.3 cmFL with the average length of 11.2+1.75 cmFL. We found that length-weight relationship tends to be isometric which statistically the body growth coefficient (b) is equal to 3 (tc = 0.53 < tab; p<0.05) . Monthly Fulton indexes ranged between 1.05-2.87 with an average of 1.90 + 0.17. Sex ratio during observation was not significantly different (p<0.05) from the expected ratio of 1: 1. Mature females occurred year-round with the highest percentage observed from January to April 2015. The estimated length at first maturity was 13.04 cm FL. These biological parameters will be used to support the population study of the future demersal fish species to improve conservation and management measures.

scholarly journals The Biological Aspect of Mackerel Scad (Decapterus Macarellus Cuvier, 1833) In Samudera Hindia (West Sumatera Block)

Omni-Akuatika ◽  
2020 ◽  
Vol 16 (3) ◽  
pp. 92
Author(s):  
Heri Widiyastuti ◽  
Andina Ramadhani Putri Pane ◽  
Moh Fauzi ◽  
Thomas Hidayat
Keyword(s):  
Indian Ocean ◽  
Sex Ratio ◽  
Average Length ◽  
Mesh Size ◽  
Growth Patterns ◽  
Purse Seine ◽  
West Sumatra ◽  
The Indian Ocean ◽  
Biological Aspects ◽  
First Maturity

Mackerel scad (Decapterus macarellus) is one of the important economical caught in the Indian Ocean West Sumatra waters captured using purse seine. Increased production of mackerel scad will lead to increased exploitation, causing population changes. Therefore, research was carried out to find out the biological aspects of the fish so that resource management can be done. The sampling was conducted in Lampulo, Sibolga, and Air Bangis from February to November 2016 with total samples of 716 fishes. This research was conduct to study some biological aspects which consist of size distribution, length-weight relationship, sex ratio, gonad maturity level, the length at first capture, and length of the first maturity in Indian ocean west Sumatera waters. The results showed that the size of the mackerel scad had ranged between 16 - 33.6 cm FL and the average was 24.5 cm. Growth patterns are allometric negative, sex ratio male and female in an unbalanced condition. The mackerel scad is most caught by purse seine in maturity condition. The average length at first captured was 25.08 cm FL and length at first mature was 20.47 cm FL. These were an ideal biological condition and must be maintained because it provides an opportunity for fish to increase the population. The mesh size purse must follow the Ministry of Maritime Affairs and Fisheries Regulation Number 71/2016 that adjusted for minimum at 1 inch. Keywords: Mackerel scad, Indian Ocean, purse seine

scholarly journals Some Biological Aspects of Al - Shabbot Arabibarbus grypus (Heckel, 1843) in Al-Diwanyia River, Middle of Iraq

2019 ◽  
Vol 27 (2) ◽  
pp. 306-316
Author(s):  
Mohanad O. Abdullah Al-Jubouri ◽  
Abdul-Razak M. Mohamed
Keyword(s):  
Sex Ratio ◽  
Condition Factor ◽  
Age Groups ◽  
Allometric Growth ◽  
Relative Condition Factor ◽  
Fish Catch ◽  
Total Fish ◽  
Biological Aspects ◽  
The Mean ◽  
Somatic Index

      Some biological characteristics of shabbot, Arabibarbus grypus (Heckel, 1843) in the Al-Diwaniya River, middle of Iraq were studied from October 2016 to September 2017. Water temperature ranged from 10.2oC in March to 32.8oC in August. A total of 853 fish were caught by seine, gill and cast nets and electro-fishing. A. grypus constituted about 6.27% of the total fish catch. The length-weight relationship was W=0.021*L2.7548 revealing an allometric growth. The mean relative condition factor was 0.91. Five age groups wore recorded and their mean total lengths were 20.2, 32.0, 39.0, 43.9 and 48.4 cm, respectively. The growth model of the species was  Lt= 58 [1-e -0.39 (t-0.313)]. The growth performance index (Φ) of A. grypus was computed as 3.11. The study declares that the species is a omnivore, feeding mainly on aquatic plants, insects, algae and detritus. The overall sex ratio (female: male) was 1.47:1. The highest values of gonado- somatic index (GSI) were 4.20 for female and 1.78 for males in April. The fecundity of the species ranged from 75600 to 124200 eggs. 

ASPEK BIOLOGI PERIKANAN IKAN LAYANG (Decapterus Macrosoma) YANG TERTANGKAP DENGAN BAGAN RAMBO DI PERAIRAN PANTAI SUMPANG BINANGAE KABUPATEN BARRU

2021 ◽  
Vol 4 (1) ◽  
pp. 12-21
Author(s):  
Hasrun Abdullah ◽  
Kasmawati Saleh
Keyword(s):  
Sex Ratio ◽  
Fish Species ◽  
Economic Value ◽  
Pelagic Fish ◽  
Small Pelagic Fish ◽  
Male And Female ◽  
Flying Fish ◽  
Biological Aspects ◽  
First Maturity ◽  
First Time

Flying fish is one of the dominant pelagic fish caught and has high economic value in Sumpang Binangae Waters. This fish is caught by many chart rambo fishing gear. The purpose of this study was to determine the biological aspects of flying fish especially those caught in the waters of Sumpang Binangae, Barru Regency. This research will be conducted for four months, from May 2020 to August 2020, which is located at the Sumpang binangae Fish Landing Base, Barru district. Identification of flying fish species is done visually by looking at the color and body shape and special characteristics based on the Guidelines for Practical Identification of Small Pelagic Fish Species in Figure, Suwarso, 2010, The composition of the type of catch is calculated based on the amount of catch (tonnes). Sex ratio, TKG, (Walpole 1993), Length of First-Time Gonads of Fish (Lm)The results showed that based on the composition of the types of fish caught, the percentage of the dominant catch was 27.41% mackerel (Rastrelliger kanagurta), 24.26% flying fish (Decapterus macrosoma), 23 anchovies (Stolephorus sp). 28%, squid (Loligo sp) by 2.24%, flying fish (Cypselurus sp) by 8.98% and tembang fish (Sardinella fimbriata) by 13%, while the type of flying fish caught was only one type, namely white-tailed flying fish. slightly yellowish (Decapterus macrosoma). Comparison of the number of male and female sex, it was found that the sex ratio of male and female Layang fish (D. macrosoma) was 52.83%: 47.17% or 1.12: 0.89, l. The size of the first maturity of male flying fish gonads in Barru waters is at the size of 15.68 cm or 156 mm and the female is at the size of 15.62 cm or 156 mm, while the male and female fish that are immature gonads are more than the fish that are mature gonads.  

scholarly journals Influence of the flood pulse on the reproduction of Tocantinsia piresi (Miranda Ribeiro) and Auchenipterus nuchalis (Spix & Agassiz) (Auchenipteridae) of the middle Xingu River, Brazil

2015 ◽  
Vol 75 (3 suppl 1) ◽  
pp. 158-167 ◽  
Author(s):  
TMS. Freitas ◽  
BS. Prudente ◽  
VA. Oliveira ◽  
MNC. Oliveira ◽  
EG. Prata ◽  
...  
Keyword(s):  
Sex Ratio ◽  
Condition Factor ◽  
Gonadosomatic Index ◽  
Flood Pulse ◽  
Allometric Growth ◽  
Xingu River ◽  
Ratio Size ◽  
Flood Period ◽  
First Maturity ◽  
Size At First Maturity

Abstract This study investigates the influence of the flood pulse on the reproductive biology of the auchenipterids Tocantisia piresi (Miranda Ribeiro, 1920) and Auchenipterus nuchalis (Spix & Agassiz, 1829) from the middle Xingu River in the Brazilian state of Pará. The specimens were collected every three months between April, 2012, and January, 2014, covering four distinct periods (flood, ebb, dry, and filling). The sex ratio, size at first maturity, gonadosomatic index, and condition factor were analysed in the two species, and evaluated in the context of the different hydrological periods. A total of 897 specimens of T. piresi were collected, of which 467 were female, and 430 males, and 383 A. nuchalis (286 females and 97 males). In T. piresi, the sex ratio was biased only in the filling and ebb periods, whereas in A. nuchalis, it departed significantly from the expected ratio of 1:1 in all periods, with a predominance of females. The female T. piresi mature at a smaller size than the males, with the opposite of the pattern being recorded in A. nuchalis. In T. piresi, the breeding peak was observed during the low water periods, whereas in A. nuchalis, the peak was recorded in the flood periods. Male and female T. piresi presented similar positively allometric growth rates, whereas in A. nuchalis, growth was negatively allometric, but rates were different between genders. A higher condition factor was recorded in the females of both species during the ebb period. Overall, the results of this study reveals distinct flood pulse effects on the reproductive parameters of the two auchenipterid species studied; for A. nuchalis the spawning seems to happen at the flood period and for T. piresi at the dry season of the middle Xingu River.

scholarly journals Reproduction of tank goby(Glossogobius giuris) in Ujung Pangkah Waters, East Java

2013 ◽  
Vol 11 (1) ◽  
pp. 64
Author(s):  
. Sulistiono
Keyword(s):  
Sex Ratio ◽  
Body Length ◽  
Total Body Length ◽  
Maturity Stage ◽  
Oocyte Diameter ◽  
Gonad Maturity ◽  
Fish Samples ◽  
Total Body ◽  
Glossogobius Giuris ◽  
Somatic Index

<p>Tank goby (<em>Glossogobius giuris</em>) is a commonly fish found in coastal area. This study was aimed to investigate reproduction of the fish. Samples were collected from July to December 2005 from fish caught by fishermen using gill net and trap net in Ujung Pangkah Waters. Analysis was done to estimate sex ratio, gonad maturity, gonado somatic index, fecundity, and oocyte diameter. During the observation, the tank goby fish was 198 individual consisted of 112 male and 86 female fish varied 63‒230 mm in total body length. Sex ratio was around 1:1.1. First maturity gonad of male was 111‒134mm and female was 87‒110 mm total body length, respectively. According to gonad maturity stage and gonado somatic index, the fish was estimated to spawn from July to December. During July and August, the gonad maturity stage and gonado somatic index were higher indicating a lot of spawning fish during those months. Fecundity was 10,640‒150,639eggs and oocyte diameter was 49‒372 µm. Based on the oocyte distribution, the fish was estimated apartial spawner<em>.</em></p> <p>Keywords: Ujung Pangkah Waters, reproduction,tank goby,<em>Glossogobius giuris</em></p>

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