scholarly journals Reproductive Biology of the Tigris Scraper, Capoeta Umbla (Heckel, 1843) Population Living in Solhan Creek of Murat River (Bingöl, Turkey)

2021 ◽  
Vol 23 (2) ◽  
pp. 39-50
Author(s):  
Zeliha Erdoğan ◽  
Hatice Torcu Koç ◽  
Fatih Özdemir
Keyword(s):  
Body Weight ◽  
Sex Ratio ◽  
Reproductive Biology ◽  
Sustainable Management ◽  
Reproductive Traits ◽  
Fish Population ◽  
Reproductive Period ◽  
Peak Activity ◽  
Somatic Index ◽  
Macroscopic Examination

Abstract We studied the reproductive traits in 23 of 190 individuals of Capoeta umbla caught monthly in the Solhan Creek of the Murat River between April 2017 and March 2018. The sex ratio (F:M) was found to be 1:1.11. The macroscopic examination of the gonads and gonado-somatic index indicated that the reproductive period lasted from May to August with peak activity in May. The fecundity ranged from 2,000 to 9,000 oocytes, and it correlated with the total length and body weight. This work represents the first attempt to investigate the reproductive traits of the Capoeta umbla population in the Solhan Creek. The results provide information on the reproductive biology and contribute to the conservation of the fish population and its sustainable management.

scholarly journals Reproductive Biology of Round Sardinella (Sardinella Aurita) (Valenciennes, 1847) in Senegalese Coastal Waters

2018 ◽  
Vol 9 (1) ◽  
pp. 31
Author(s):  
Ismaïla NDIAYE ◽  
Alassane SARR ◽  
Alioune FAYE ◽  
Modou THIAW ◽  
Malick DIOUF ◽  
...  
Keyword(s):  
Sex Ratio ◽  
Reproductive Biology ◽  
Coastal Waters ◽  
Sexual Maturity ◽  
Reproductive Parameters ◽  
Monthly Variation ◽  
Relative Fecundity ◽  
The Mean ◽  
Sardinella Aurita ◽  
Somatic Index

In this study, a total of 1068 specimens Sardinella aurita of which 553 females and 515 males were examined. The objectif of this study was to determine the reproductive parameters of Sardinella aurita. The sex ratio was significantly in favor of females (55%). The size at first sexual maturity was estimated at 18.9 cm for females and 18.0 cm for males. The monthly variation of sexual maturity stages and gonado-somatic index (GSI) allowed to locate the reproduction periods from February to June and from September to December. The mean absolute fecundity was estimated at 110.794 ± 7582 oocytes whereas relative fecundity was about 422 ± 26 oocytes per gram of female.

scholarly journals Reproductive biology of silurid catfishes Ompok miostoma (Vaillant 1902) in Mahakam River East Kalimantan

2019 ◽  
Vol 19 (1) ◽  
Author(s):  
. Jusmaldi ◽  
Dedy Duryadi Solihin ◽  
Ridwan Affandi ◽  
MF Rahardjo ◽  
Rudhy Gustiano
Keyword(s):  
Sex Ratio ◽  
Reproductive Biology ◽  
Spawning Season ◽  
Spawning Period ◽  
Male And Female ◽  
Gonad Maturity ◽  
East Kalimantan ◽  
Fish Samples ◽  
Total Fish ◽  
Somatic Index

Reproductive biology of silurid catfish O.miostoma(Vaillant 1902)as one of endemic species in Mahakam River East Kalimantan is not yet known. This study aimed to analysisreproductive aspect related to changing seasons, including sex-ratio, spawning season, spawning location, length at first gonad maturity, gonado-somatic index, and fecundity. Total fish samples (n=1214)were collected monthly from November 2013 to October 2014 at four locations in the Mahakam River, using many fishing gears.The results of this research showthe total length of fish ranged from 132.19 to 227.30 mm and weight ranged from 20.00 to 70.40 g. The overall sex ratio of male and female was1: 1.56, while at gonad maturity stages were1:1.77. The spawning season range from November to January and peak spawning occurs in December. The highest spawning location was found at swamp flood Semayang Lake. The length at first gonad maturity of male ranged of 191.05-202.60 mm, while it was in 179.56-198.50 female. Maximum average gonado-somatic index (GSI) values obtained for male and female were 0.32 and 2.07 respectively during spawning period in November and declined to minimum in February. The total fecundity and eggs diameter rangedfrom 2648 to 12495 eggsind-1and 0.61 to 1.30 mm respectively. There was a positive correlation between fecundity andtotal length and weightof fishes.AbstrakBiologi reproduksi ikan lais O. miostoma (Vaillant 1902)sebagai salah satu spesies endemik di Sungai Mahakam Kalimantan Timur belum pernah diketahui. Tujuan penelitian ini adalah menganalisisaspek reproduksi ikan laisberkaitan dengan perubahan musimyang mencakupnisbah kelamin, musim pemijahan, lokasi pemijahan, ukuran kali pertama matang gonad, indeks kematangan gonad dan fekunditas.Total ikan contoh 1214 ekor telah dikumpulkan setiap bulan mulai dari bulan November 2013 sampai Oktober 2014di empat lokasi perairan Sungai Mahakam, menggunakan berbagai alat tangkap. Hasil penelitian menunjukkanukuran panjang total ikan berkisar dari 132,19-227,30 mm dan bobot berkisar dari  20,00-70,40 gram.Nisbah kelamin seluruh ikan jantan dan betina yang diamati 1 : 1,56, sedangkanpada tahap kematangan gonad 1:1,77. Musim pemijahan terjadi mulai dari bulan November sampai Januari dan puncak pemijahan pada bulan Desember. Lokasi pemijahan tertinggi ditemukan di rawa banjiran Danau Semayang. Ukuran ikan pertamamatang gonad pada jantan berkisar dari 191,05-202,60 mm dan betina berkisar dari 179,56-198,50 mm. Rata-rata indeks kematangan gonad (IKG)  tertinggi ditemukan pada jantan dan  betina berturut turut 0,32  dan 2,07 selama musim pemijahanpada bulan November dan menurun hingga terendah pada bulan Februari. Fekunditas total berkisar dari 2.648-12.495 butir telur per individu.Ada korelasi positif antara fekunditas dengan panjang total dan bobot ikan.

Reproductive Biology of Southwest Scotian Shelf Haddock (Melanogrammus aeglefinus)

1989 ◽  
Vol 46 (S1) ◽  
pp. s153-s170 ◽  
Author(s):  
K. G. Waiwood ◽  
M.-I. Buzeta
Keyword(s):  
Body Weight ◽  
Reproductive Biology ◽  
Seasonal Changes ◽  
Maximum Size ◽  
Melanogrammus Aeglefinus ◽  
Maturation Stage ◽  
Peak Activity ◽  
Gonad Weight ◽  
Scotian Shelf ◽  
Haddock Melanogrammus Aeglefinus

Information on the reproductive biology of Southwest Scotian Shelf haddock (Melanogrammus aeglefinus) (NAFO Division 4X) is presented including geographic distribution by maturation stage, timing of maturation, seasonal changes in gonad weight, spawning distribution in relation to environmental factors, and fecundity at length, weight, and age. Haddock were found to spawn on Browns, Baccaro, LaHave, and Roseway Banks over sand/gravel substrates. Spawning fish were found in a narrower and colder temperature range than were fish of other maturity stages. Spawning fish were found from April to August with peak activity occurring from April to June. Testes peaked in weight in February and March when they accounted for 1–2.2% of body weight while ovaries reached their maximum size (3.1–12.5% of body weight) from late March to mid-May. The length at 50% maturity varied over the period 1970–85 and these changes were correlated with changes in population biomass. There were no significant differences in fecundity/length relationships with area or year (1983–86) but fecundity for a given size decreased over the spawning season.

scholarly journals Reproduction De Heterotis Niloticus (Cuvier, 1829) De La Riviere Agneby (Cote d’Ivoire)

2016 ◽  
Vol 12 (6) ◽  
pp. 83 ◽  
Author(s):  
Kouakou Fokouo Kessia Irène ◽  
Koné Tiéhoua ◽  
Soro Yaya ◽  
N’Da Konan ◽  
Ouattara Mamadou
Keyword(s):  
Sex Ratio ◽  
Reproductive Biology ◽  
Standard Length ◽  
Sexual Maturity ◽  
Condition Factor ◽  
Artisanal Fishing ◽  
Relative Fecundity ◽  
Maturation Stages ◽  
Liver Somatic Index ◽  
Somatic Index

The reproductive biology of Heterotis niloticus has been studied from monthly samples taken from artisanal fishing on the Agneby river during the period june 2013 to May 2015. The whole sample consisted of 498 specimens of which 269 females and 229 males were examined. Sex-ratio observed was in favour of females (1: 1.17; X2 = 3.21; p > 0.05). The monthly evolution of the gonado-somatic index (GSI), the liver-somatic index (LSI), the condition factor (K) and maturation stages suggests that this fish has two periods of reproduction. The two periods were respectively from june to august and from november to december. The standard length at first sexual maturity was 490.6 mm for females and 436.3 mm for males. The absolute fecundity was ranged from 5424 to 25591 oocytes in females of 595 mm to 780 mm standard length. The relative fecundity was 3752± 1491 oocytes/kg of female.

scholarly journals Reproduction of Celebes rainbowfish, Marosatherina ladigesi Ahl, 1936 in Pattunuang and Batu Puteh Rivers, South Sulawesi

2020 ◽  
Vol 20 (2) ◽  
pp. 171
Author(s):  
Adiara Firdhita Alam Nasyrah ◽  
M.Fadjar Rahardjo ◽  
Charles P.H. Simanjuntak
Keyword(s):  
Sex Ratio ◽  
Anthropogenic Activities ◽  
Fish Population ◽  
Red List ◽  
Male Fish ◽  
South Sulawesi ◽  
Egg Diameter ◽  
Somatic Index ◽  
Destructive Fishing

Marosatherina ladigesi is one of endemic fishes in South Sulawesi and also as ornamental fish. Anthropogenic activities such as destructive fishing and degradation caused by the dredging of sand carried M. ladigesi to the red list of threatened IUCN category as vulnerable species. Accordingly, conservation efforts are needed to maintenance fish population in its habitat. The biologic information for conservation is reproduction of fishes. This research aimed to described reproduction of Celebes rainbow fish including sex ratio, gonad maturity, gonado-somatic index, fecundity, and distribution of egg diameter in Pattunuang and Batu Puteh Rivers, South Sulawesi. This research was conducted from May 2018 to April 2019. The result showed that the sex ratio in Pattunuang and Batu Puteh rivers were 1,00:1,60 and 1,00:1,08, respectively. This species spawned from the end of dry season to the early rainy season. Fecundity of fish in Pattunuang and Batu Puteh rivers were 22-795 eggs and 69-571 eggs, respectively. Based on distribution of egg diameter, Celebes rainbowfish categorized as total spawner. For the conservation of this species is recommended to catch restrictions in the spawning season and for male fish, and needs to be proposed the conservation in situ to determine both of rivers as reservoir area because these habitats are a source of germplasm.

scholarly journals Some aspects of the reproductive biology and sex-ratio of Cirrhina reba (Hamilton) (Cyprinidae : Cypriniformes)

2012 ◽  
Vol 30 ◽  
pp. 21-24
Author(s):  
Sarmin Akther ◽  
Shirin Akther
Keyword(s):  
Sex Ratio ◽  
Reproductive Biology ◽  
Standard Length ◽  
Total Weight ◽  
Chi Square ◽  
Male And Female ◽  
Total Length ◽  
Chi Square Test ◽  
Somatic Index

Some aspects of the reproductive biology viz. sex-ratio gonadal length index (G.L.I.), gonado somatic index (G.S.I.) and sex-ratio of Cirrhina reba were studied during September 2004 to July 2005. In present study the highest values of GLI (33.76) and GSI (0.63) were in the month of July. Total length (TL) and gonadal length (GL), total weight (TW) and gonadal weight ( GW ), standard length (SL) and gonadal length ( GL ) and gonadal weight relationships were found to be positive; and the relationships were: GL = -3.873 + 0.219 TL (r = 0.992), GW = 0.01511+0.000815 TL (r = 0.979), GL = -2.6030+0.253 SL (r = 0.990), GL = 0.01997+0.000938 SL (r= 0.976), GW = 13.2952+0.6064 TW (r = 0.958), GW = 0.0772+0.00233 TW (r = 0.979). The sex- ratio of C. reba were 1:1.62 for male and female respectively. The Chi-square test showed significant differences of sex-ratio among months and totals.DOI: http://dx.doi.org/10.3329/ujzru.v30i0.10739Univ. j. zool. Rajshahi Univ. Vol. 30, 2011 pp. 21-24

scholarly journals Reproductive biology of the orangefin ponyfish Photopectoralis bindus (Valenciennes, 1835) off Mangaluru coast, Karnataka

2019 ◽  
Vol 66 (2) ◽  
Author(s):  
Shobha Rawat ◽  
Jitendra Kumar ◽  
S. Benakappa ◽  
Mahesh Chand Sonwal ◽  
Kumar A.S. Naik
Keyword(s):  
Body Weight ◽  
Reproductive Biology ◽  
Monsoon Season ◽  
Female Ratio ◽  
Fish Size ◽  
Male Female Ratio ◽  
Post Monsoon Season ◽  
Spawning Periodicity ◽  
Somatic Index ◽  
Peak Value

The spawning periodicity of Photopectoralis bindus (Valenciennes, 1835) was studied off Mangaluru coast from September 2015 to April 2016 using 490 specimens with total length 6.8-12.3 cm (9.6±0.9 cm) and body weight 4.6 -30.28 g (14.20±3.59 g). Results indicated that the average sizes at maturity were 9.3 cm (males) and 9.5 cm (females). The male-female ratio was 1:0.72. Absolute fecundity estimated was 9349±853 eggs that increased with fish size (R2 = 0.92). Higher gonado-somatic index (GSI) was observed in post-monsoon season with peak value in December (female: 3.39±1.00%; male: 2.84±0.796%) indicating seasonal spawning of the fish.

scholarly journals Reproductive biology of the Neotropical electric fish Brachyhypopomus draco (Teleostei: Hypopomidae) from southern Brazil

2009 ◽  
Vol 7 (4) ◽  
pp. 737-744 ◽  
Author(s):  
Andrea B. Schaan ◽  
Júlia Giora ◽  
Clarice B. Fialho
Keyword(s):  
Sexual Dimorphism ◽  
Sex Ratio ◽  
Reproductive Biology ◽  
Water Depth ◽  
Electric Fish ◽  
Gonadosomatic Index ◽  
Reproductive Period ◽  
Weakly Electric Fish ◽  
Hepatosomatic Index ◽  
Southern Brazil

The reproductive biology of a population of the weakly electric fish Brachyhypopomus draco from southern Brazil is described. Information is provided on the establishment of the reproductive period in this species and its relations with environmental and feeding factors, as well as on the absolute and relative fecundities, spawning type, sex ratio and sexual dimorphism. The species exhibits a relatively long reproductive period, a relative fecundity of 0.173 oocytes per mg of female total weight, and fractional spawning. The sex ratio did not differ from 1:1 during all sampled months. Sexual dimorphism related to hypertrophy of the male's distal portion of caudal filament was observed and males grew to greater lengths than females. Male gonadosomatic index (GSI) was significantly related to water depth, oxygen saturation and temperature. Female GSI was significantly related to water depth and hepatosomatic index.

scholarly journals Reproductive biology of seven fish species of commercial interest at the Ramsar site in the Baixada Maranhense, Legal Amazon, Brazil

2021 ◽  
Vol 19 (2) ◽  
Author(s):  
Irayana Fernanda da Silva Carvalho ◽  
Lorrane Gabrielle Cantanhêde ◽  
Ana Luiza Caldas Diniz ◽  
Raimunda Nonata Fortes Carvalho-Neta ◽  
Zafira da Silva de Almeida
Keyword(s):  
Sex Ratio ◽  
Reproductive Biology ◽  
Fisheries Management ◽  
Reproductive Activity ◽  
Reproductive Period ◽  
Ramsar Site ◽  
Management Measures ◽  
Length Relationship ◽  
Commercial Species ◽  
Pygocentrus Nattereri

Abstract The purpose of this study is to determine the parameters of the reproductive biology of seven commercial species at the Ramsar Site of the Baixada Maranhense to support fisheries management measures. The collections were carried out between 2012 and 2016. The reproductive period, sex ratio, weight-length relationship and first sexual maturity were evaluated for seven species of commercial importance. The sex ratio showed that females are predominant for all species, except for Plagioscion squamossissimus. The weight-length relationship indicated a greater investment in weight for Cichla monoculus and Hassar affinis, and a greater investment in length for Hoplias malabaricus, Plagioscion squamosissimus, Prochilodus lacustris, Pygocentrus nattereri, and Schizodon dissimilis. The reproductive activity of the species was predominant in the rainy season, but C. monoculus, H. malabaricus and P. lacustris showed the ability to reproduce in both seasons. As management measures for the region, it is suggested a change in the closed fishing season established by IBAMA, from December 1 to April 30, to ensure the protection of all commercial species in this study.

scholarly journals ASPEK REPRODUKSI DAN UMUR IKAN EKOR KUNING (Caesio cuning) YANG DI DARATKAN DI PELABUHAN PERIKANAN NUSANTARA SUNGAILIAT KABUPATEN BANGKA

2019 ◽  
Vol 4 (2) ◽  
pp. 193-207
Author(s):  
Nirmala Sari ◽  
Okto Supratman ◽  
Eva Utami
Keyword(s):  
Sex Ratio ◽  
Random Sampling ◽  
Sustainable Management ◽  
Sampling Method ◽  
Economic Value ◽  
The Body ◽  
Maturity Level ◽  
Gonad Maturity ◽  
Gonad Somatic Index ◽  
Somatic Index

Ikan ekor kuning (Caesio cuning) salah satu jenis ikan karang dari famili Caesionidae, yang menjadi target penangkapan dengan bubu di Pelabuhan Perikanan Nusantara Sungailiat. Ikan ekor kuning memiliki nilai ekonomis penting. Informasi tentang aspek reproduksi ikan ekor kuning (Caesio cuning) diperlukan untuk pengelolaan yang berkelanjutan. Penelitian ini bertujuan untuk mengetahui aspek reproduksi ikan ekor kuning pada bulan Januari sampai Maret yang meliputi Rasio Kelamin (sex ratio), Tingkat Kematangan Gonad (TKG), Indeks Kematangan Gonad (IKG), Fekunditas, dan menganalisis umur ikan. Pengambilan sampel dilakukan pada bulan Januari sampai Maret 2019 di Pelabuhan Perikanan Nusantara Sungailiat dengan menggunakan metode random sampling. Hasil penelitian selama tiga bulan ini menunjukkan bahwa nilai rasio kelamin ikan ekor kuning jantan dan betina yaitu 1:1,032 yang berada pada tingkat kematangan I sampai dengan tingkat kematangan gonad IV. Nilai IKG ikan ekor kuning jantan berkisar antara 0,014% - 4,712% dan untuk betina antara 0,014% - 7,784%. Fekunditas ikan ekor kuning betina berkisar antara 5.523 – 49.987 butir dan memiliki umur 1 tahun dan 2 tahun, dimana panjang tubuh ikan sangat mempengaruhi umur ikan.REPRODUCTIVE ASPECTS AND AGE OF YELLOW-TAILED FISH (Caesio Cuning) LANDED AT SUNGAILIAT ARCHIPELAGO FISHING PORT IN BANGKA REGENCY. Reproductive aspects of yellow-tailed fish which are landed in the Pelabuhan Perikanan Nusantara Sungailiat in Bangka Regency. Yellow-tailed fish (Caesio cuning) is one type of reef fish from the Caesionidae family, which is the target of catching fish at the Pelabuhan Perikanan Nusantara Sungailiat. Yellow tail fish has important economic value. Information about the reproductive aspects of yellow tail fish (Caesio cuning) is  needed for sustainable management. This study aims to determine the reproductive aspects of yellow tailed fish from January to March which include sex ratio, gonad maturity level, gonad somatic index, fecundity, and analyze the age of fish. Sampling was carried out from January to March 2019 at the Pelabuhan Perikanan Nusantara Sungailiat used the random sampling method. The results of this three-month study showed that the sex ratio of yellow-tailed fish male and female were 1: 1,032 which at the level of maturity I to the level of gonad maturity IV. The value of GSI male yellow-tailed fish ranges from 0.014% - 4.712% and females between 0.014% - 7.784%. The fecundity of female yellow-tailed fish ranges from 5,523 - 49,987 grains and yellow-tailed fish has age 1 year and 2 years, where the body length of fish greatly affects the age of fish.

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