| Anguilla anguilla |
Only after the fish begin their migration does further growth and development of gonads and oocytes take place, GSI at about 1.0-1.6 |
No data |
Bezdenezhinykh and Petukhov, 1982 |
| Aphanius iberus |
March-April |
['April', 'March'] |
Vargas and De Sostoa, 1997 |
| Aphanius iberus |
January-February |
['February', 'January'] |
Fernandez-Delgado, 1988 |
| Valencia hispanica |
January-February |
['February', 'January'] |
Caiola, 2001 |
| Barbatula barbatula |
After autumn the GSI was 1.6 ± 0.24%, lower than that in the spring |
['April', 'May', 'December', 'June', 'October', 'November'] |
Skryabin, 1993 |
| Barbatula barbatula |
The GSI remained low during July and early August and increased thereafter |
['August', 'July'] |
Saat, 2003 |
| Barbatula barbatula |
Between September and February GSI lies between 5 and 10% |
['February', 'September'] |
Smyly, 1955 |
| Cobitis taenia |
Futher elaboration occured in September and December |
['December', 'September'] |
Robotham, 1981 |
| Cobitis taenia |
Based on graph, could be in November-December |
['November', 'December'] |
Marconato and Rasotto, 1989 |
| Cobitis taenia |
In late July GSI decline rapidly to 3-6%. From this month a phase of relative quiescence in gonad development follows proceeding until the next spring |
['April', 'May', 'July', 'June'] |
Vaino and Saat, 2003 |
| Cobitis paludica |
December-January |
['January', 'December'] |
Oliva-Paterna, 2002 |
| Blicca bjoerkna |
August-September |
['August', 'September'] |
Hansen, 1980 |
| Blicca bjoerkna |
The intensity of ovogenesis began to increase in August and September. […] Based on our investigations the GSI value is about 4.5% at the end of September, which can clearly be explained by oocytes entering the stage of cortical alveoli |
['August', 'September'] |
Lefler, 2008 |
| Abramis brama |
In autumn when water temperature drops below 12-10°C, part of oocytes enters further meiosis stages, and vacuolization commences in the cytoplams - stage III of ovaries endogenous vitellogenesis |
['October', 'November', 'December'] |
Brylinska and Boron, 2004 |
| Abramis brama |
From August onwards there is a constant increase in the coefficient |
['August'] |
Kompowski, 1982 |
| Abramis brama |
Vitellogenesis in the bream ovaries commenced in August in both lakes |
['August'] |
Kopiejewska, 1989 |
| Alburnoides bipunctatus |
Increase regularly from September to February, from 2.5 [n=5] in August to 9 [n=2] in February |
['February', 'August', 'September'] |
Yildirim, 1999 |
| Alburnoides bipunctatus |
In September, the mean diameter of oocytes increased by 0.28 mm compared to the previous month but is remained more-less constant in the subsequent period (October, November, December). However, the formation of the gap in oocyte size-distribution was first observable in December |
['October', 'November', 'December', 'September'] |
Polacik and Kovac, 2006 |
| Aristichthys nobilis |
In autumn and early spring gonads were at III stage of maturation |
['April', 'May', 'December', 'June', 'October', 'November'] |
Makeyeva, 1996 |
| Aspius aspius |
Beginning of September and continue to increase regularly in the winter period (December-February) |
['March', 'January', 'September', 'December', 'February'] |
Shikhshabekov, 1979 |
| Aspius aspius |
During the fall from September to November, the average GSI value rose sharply to a level close to that seen in the pre-spawning period |
['November', 'September'] |
Kompowski et Neja, 2004 |
| Aspius aspius |
The maturation of gonads is synchronous and complete in the previous autumn |
['October', 'November', 'December'] |
Fredrich, 2003 |
| Barbus barbus |
New increase in the gonad weight is noted from September, especially in females |
['September'] |
Lobon-Cervia and Fernandez-Delgado, 1984 |
| Barbus barbus |
Data collected in the orfe and nase show that the transition of oocytes in the stage of primary growth into the stage of cortical alveoli takes place in July-August and vitellogenesis already starts in August-September. Thus the formation of cortical alveoli is intensive in the second half of summer and is terminated at the end of October. Vitellogenesis starts at the end of summer and lasts until the beginning of spawning season |
['October', 'August', 'July', 'September'] |
Lefler, 2008 |
| Carassius auratus |
December [GSI increased slowly from December to February, from 3.9 ±0.7 to 5.2 ± 1.0) |
['February', 'December'] |
Kagawa, 1983 |
| Carassius auratus |
GSI gradually increased from August to February (From 2.0 ±0.2 to 3.7 ±0.5) |
['February', 'August'] |
Kobayashi, 1986 |
| Carassius auratus |
Females commence vitellogenesis during winter |
['February', 'March', 'January'] |
Kobayashi, 2002 |
| Chondrostoma nasus |
Sexual maturation starts in Autumn and ends in March |
['March'] |
Bruslé and Quignard, 2001 |
| Chondrostoma nasus |
Data collected in the orfe and nase show that the transition of oocytes in the stage of primary growth into the stage of cortical alveoli takes place in July-August and vitellogenesis already starts in August-September. Thus the formation of cortical alveoli is intensive in the second half of summer and is terminated at the end of October. Vitellogenesis starts at the end of summer and lasts until the beginning of spawning season |
['October', 'August', 'July', 'September'] |
Lefler, 2008 |
| Ctenopharyngodon idella |
The gonads pass the winter in early maturity stages, develop to intermediate level during spring, and quickly reach final maturatrion just prior to spawning in June and July |
['April', 'March', 'January', 'May', 'June', 'July', 'February'] |
Shireman and Smith, 1983 |
| Cyprinus carpio |
GSI increased gradually from August until February |
['February', 'August'] |
Yaron and Levavi-Zermonsky, 1986 |
| Cyprinus carpio |
June-July |
['June', 'July'] |
Bieniarz, 1978 |
| Cyprinus carpio |
October |
['October'] |
Crivelli, 1981 |
| Cyprinus carpio |
January [In Australia] |
['January'] |
Smith and Walker, 2004 |
| Cyprinus carpio |
GSI increase from 1.7 +/- 0.4 in September 28 to 6.2 +/- 1.1 in November 12 for big-belly and 0.4 +/-0.1 to 1.1 +/- 0.2 for Gold in Israel |
['November', 'September'] |
Hulata, 1974 |
| Gobio gobio |
Mid-October [Greatly decreased between November to April] |
['April', 'October', 'November'] |
Kestemont, 1987 |
| Gobio gobio |
October to March slight increase from 3 to 4.59 |
['October', 'March'] |
Rinchard, 1993 |
| Gobio gobio |
Increase in October |
['October'] |
Mann, 1980 |
| Gobio gobio |
In October, all fishes were at the same stage of development and only contained stage 1 and 2 ooctyes. Stage 3, reached in November, continued until April as the most advanced stage. |
['April', 'October', 'November'] |
Kestemont, 1990 |
| Leuciscus cephalus |
After August the gonads begin to develop and the values of GSI again start to increase gradually until November |
['August', 'November'] |
Kalkan, 2005 |
| Leuciscus cephalus |
The redevelopment of gonads did not begin until September |
['September'] |
Mann, 1976 |
| Leuciscus cephalus |
After August, GSI increase up to 3 during the winter than remain constant until March |
['February', 'August', 'March', 'January'] |
Unlu and Balci, 1993 |
| Leuciscus cephalus |
Ovary development began in December [Yet on the GSI curve, slight increase of GSI in September-October] |
['October', 'December', 'September'] |
Sasi, 2003 |
| Leuciscus cephalus |
November |
['November'] |
Poncin, 1989 |
| Leuciscus cephalus |
Weight of gonads increase after September |
['September'] |
Zelepien, 1997 |
| Leuciscus cephalus |
After August, the gonads began to develop and the values of GSI again started to increase gradually until November |
['August', 'November'] |
Ünver, 1998 |
| Leuciscus cephalus |
In females in both years of this study, gonad development started in December |
['December'] |
Erdogan, 2002 |
| Leuciscus idus |
Maturation of gonads is synchrnous and complete in the previous autumn |
['October', 'November', 'December'] |
Fredrich, 2003 |
| Leuciscus idus |
Ovaries start developing in June |
['June'] |
Witkowski, 1997 |
| Leuciscus idus |
Data collected in the orfe and nase show that the transition of oocytes in the stage of primary growth into the stage of cortical alveoli takes place in July-August and vitellogenesis already starts in August-September |
['August', 'July', 'September'] |
Lefler, 2008 |
| Leuciscus leuciscus |
Elaboration of gonad tissue was not significant until August/September, from which time devolpment continued through winter months |
['March', 'January', 'September', 'August', 'February'] |
Mann, 1974 |
| Leuciscus leuciscus |
Maturation of gonads is synchronous and complete in the previous autumn |
['October', 'November', 'December'] |
Fredrich, 2003 |
| Phoxinus phoxinus |
October, slight increase then remains constant until february |
['October'] |
Mills, 1987 |
| Phoxinus phoxinus |
The GSI rises somewhat in autumn but remains static throughout the winter |
['March', 'January', 'December', 'February', 'October', 'November'] |
Scott, 1979 |
| Phoxinus phoxinus |
During late September and early October there is a considerable increase to about nine times the original volume in case of the ovary and bout three times in the cases of the testes. The volume thus attained remains fairly consistent throughout the winter |
['March', 'January', 'September', 'February', 'October'] |
Frost, 1943 |
| Phoxinus phoxinus |
September |
['September'] |
Mills and Eloranta, 1985 |
| Rutilus rutilus |
Starts in september and October |
['October'] |
Rinchard, 1996 |
| Rutilus rutilus |
Starts in September and then increase regularly until May |
['May', 'September'] |
Mann, 1973 |
| Rutilus rutilus |
Vitellogenesis starts in September and proceeds up to spawning |
['September'] |
Kopiejewska, 2003 |
| Rutilus rutilus |
September-October, increase in GSI (Graph) |
['October', 'September'] |
Tarkan, 2006 |
| Rutilus rutilus |
Maturation of gonads is synchronous and complete in the previous autumn |
['October', 'November', 'December'] |
Fredrich, 2003 |
| Rutilus rutilus |
Developed quickly during the autumn, in September. Ovary development proceeded slowly during the winter, increased by 3 in the period from December to February [Roach belong to a group of temperate zone cyprinids that initiates gonad develoment while the temperature and photoperiod are decreasing in autumn. Ovarian development begins in early autum, and then vitellogenesis proceeds slowly throughout winter with the final maturation stages of oocytes and spawning occuring in spring or early winter] Could indicate that the lowest temperature at which roach ovary development occurs is close to 3°C |
['April', 'March', 'January', 'May', 'September', 'December', 'June', 'February', 'October', 'November'] |
Gillet and Quétin, 2006 |
| Rutilus rutilus |
Eggs for next spring start to develop already in July |
['April', 'May', 'July', 'June'] |
Noges and Järvet, 2005 |
| Scardinius erythrophthalmus |
September (Ovaries are in the state III from October toApril) |
['April', 'October', 'September'] |
Shikhshabekov, 1979 |
| Scardinius erythrophthalmus |
September-October, slight increase (from graph) |
['October', 'September'] |
Tarkan, 2006 |
| Tinca tinca |
The onset of pre-spawning in April [Until February 25. all the fish were in previtellogenensis] |
['February', 'April'] |
Breton, 1980 |
| Tinca tinca |
August already at 2% |
['August'] |
Yilmaz, 2002 |
| Tinca tinca |
March [Vittellogenesis is slowly stimulated from mid-february to the end of April, by increasing temperature, but not exceeding 16-17°C] |
['April', 'March'] |
Linhart and Billard, 1995 |
| Tinca tinca |
September-October |
['October', 'September'] |
Alas and Solak, 2004 |
| Tinca tinca |
Vitellogenesis begins at the end of winter |
['February', 'March', 'January'] |
Gillet and Quétin, 2006 |
| Tinca tinca |
Vitellogenesis commenced in May. Its beginning was determined by water temperature (>10°C) |
['May'] |
Pimpicka, 1989 |
| Tinca tinca |
After spawning, in Ocotber slight increase from 3 to 5% |
No data |
Kubu and Kouril, 1985 |
| Vimba vimba |
October (already at stage III in November, in which they remained the entire winter |
['March', 'January', 'February', 'October', 'November'] |
Shikhshabekov, 1979 |
| Vimba vimba |
November |
['November'] |
Hliwa, 2002 |
| Gambusia affinis |
April |
['April'] |
Koya, 1998 |
| Esox lucius |
July-August |
['August', 'July'] |
Souchon, 1983 |
| Esox lucius |
July-August |
['August', 'July'] |
Billard, 1996 |
| Esox lucius |
August-September |
['August', 'September'] |
Lenhardt, 1992 |
| Esox lucius |
The sudden enlargement of ooctytes begins in August and is particularly intensive during September, October and November |
['October', 'August', 'November', 'September'] |
Lenhardt and Cakic, 2002 |
| Esox lucius |
August-September |
['August', 'September'] |
Treasurer, 1990 |
| Esox lucius |
Gonad growth began in August, testicular growth was completed by september |
['August'] |
Diana and Mackay, 1979 |
| Esox lucius |
August-September |
['August', 'September'] |
June, 1977 |
| Lota lota |
July [Increase from July to November] |
['November', 'July'] |
Brylinska, 2002 |
| Lota lota |
August |
['August'] |
Pulliainen and Korhonen, 1990 |
| Lota lota |
The onset of ovarian recrudescence was first evident in early June |
['June'] |
June, 1977 |
| Gasterosteus aculeatus |
February |
['February'] |
Copp, 2002 |
| Gasterosteus aculeatus |
September-October: A period of slow increase over the autumn and the winter |
['March', 'January', 'September', 'December', 'February', 'October', 'November'] |
Wootton, 1978 |
| Gasterosteus aculeatus |
Slight increase in October-November [Relative ovarian weights are low in autum and early spring] |
['April', 'May', 'June', 'October', 'November'] |
Borg and Van Veen, 1982 |
| Gasterosteus aculeatus |
September-October, based on Fig. 5b |
['October', 'September'] |
Sokolowska and Sokolowska, 2006 |
| Pungitius pungitius |
Based on GSI graph, slight increase between November to February |
['February', 'November'] |
Copp, 2002 |
| Pungitius pungitius |
Based on GSI graph, slight increase between August and September and another between November and December |
['August', 'November', 'December', 'September'] |
Sokolowska and Skora, 2002 |
| Lepomis gibbosus |
From January to early May, 1972, the gonads of both sex remained small. The ovaries begin to increase in size during late and early June. The GSI of both sex remained low from August through the fall and winter. Therefore it appears that the first sign of recrudescence in both males and females occured during late May in 1972 |
['March', 'January', 'May', 'August', 'June', 'February'] |
Burns, 1976 |
| Lepomis gibbosus |
March-April |
['April', 'March'] |
Copp, 2002 |
| Micropterus salmoides |
Gonadal recrudescence for the following spawning period was observed from November through December, as GSI increased significantly |
['November', 'December'] |
Rosenblum, 1994 |
| Micropterus salmoides |
Recrudescence commenced in September-October |
['October', 'September'] |
Bennett and Gibbons, 1975 |
| Micropterus salmoides |
The average increase of GSI was extremely weak from November to February |
['February', 'November'] |
Martin, 1997 |
| Micropterus salmoides |
March |
['March'] |
Beamish, 2005 |
| Dicentrarchus labrax |
October-November |
['October', 'November'] |
Prat, 1990 |
| Dicentrarchus labrax |
December [At Arcachon, France] |
['December'] |
Zohar, 1984 |
| Dicentrarchus labrax |
October-November [In Arcachon, France], September [In Sète, France], October [Tunisia] |
['October', 'November', 'September'] |
Barnabé, 1980 |
| Dicentrarchus labrax |
In control fish group exogeneous vitellogenesis began in early November |
['November'] |
Carillo, 1989 |
| Dicentrarchus labrax |
Recruitment of primary oocytes into secondary (vitellogenic) growth, continues through August and September, by the end of which time the ovaries have reacehd maturity stage III. From mid-October, oocyte development starts to accelerate. |
['October', 'August', 'September'] |
Mayer, 1990 |
| Morone americana |
Mature-Developing. Ovaries enlarging, becoming yellowish in color and granular in consistency, full of developing eggs that can be distinguished by direct observations. Diameters range from 0.30-0.70 mm: from July to February |
['February', 'July'] |
Mansuetti, 1961 |
| Morone americana |
The first significant rise from basal summer occur in November then regularly increase until March |
['March', 'September', 'August', 'July', 'November'] |
Jackson and Sullivan, 1995 |
| Morone chrysops |
Onset of vitellogenesis in October |
['October'] |
Jackson and Sullivan, 1995 |
| Morone chrysops |
Beginning of October increase in GSI [Recruitment ova began to develop in late august,a bout 9 months before the spawning season] |
['October'] |
Ruelle, 1977 |
| Morone chrysops |
Initiation of vitellogenesis in October |
['October'] |
Berlinsky, 1995 |
| Morone chrysops |
End of September |
['September'] |
June, 1977 |
| Morone saxatilis |
Vitellogenesis may be initiated as early as late-September, but this could vary |
['September'] |
Sullivan, 1997 |
| Morone saxatilis |
Vitellogenic from late October. E2 and T levels covaried in females and were low in summer, increased by late October to intermediate levels maintained until January, and increased again to maximum values observed just prior to the spawning season. |
['January', 'September', 'August', 'July', 'October'] |
Woods III and Sullivan, 1993 |
| Morone saxatilis |
Differentiation of females was more accurate from October to May, when maximum ovarian diameters exceeded 16 mm |
['October', 'May'] |
Blythe, 1994 |
| Morone saxatilis |
In October and November of the third year, SG-I oocytes became more numerous. By December, 50% of the fish contained two populations of oocytes in captive maturing females |
['October', 'November', 'December'] |
Holland, 2000 |
| Morone saxatilis |
Significant oocyte (follicle) growth was detected in females from all treatment groups around the time of the autumnal equinox, on or between experimental days 106-139 |
['October', 'November', 'December'] |
Clark, 2005 |
| Gymnocephalus cernuus |
Oocytes mature in 165 days in winter and 30 days during summer |
['March', 'January', 'September', 'August', 'July', 'February'] |
Ogle, 1998 |
| Gymnocephalus cernuus |
Between September and March, gonad weight increases slowly |
['March', 'September'] |
Kovac, 1998 |
| Gymnocephalus cernuus |
September slight increase |
['September'] |
Leino and McCormick, 1997 |
| Gymnocephalus cernuus |
In September, most females (64.1%) had ovaries at stage 2. No stage 4 gonads were found at that time |
['September'] |
Neja, 1988 |
| Perca flavescens |
Active growth of ova starts in early september and formation of yolk in November |
['November'] |
Dabrowski, 1996 |
| Perca flavescens |
Oocyte growth during fall through winter |
['February', 'March', 'January'] |
Heidinger and Kayes, 1986 |
| Perca flavescens |
Mid-August until end of September |
['August', 'September'] |
Malservisi and Magnin, 1968 |
| Perca flavescens |
Late August until immediately before spawning, increase gradually |
['August'] |
Hayes and Taylor, 1994 |
| Perca flavescens |
Rapid increase of oocyte diameter from late July to November-December |
['November', 'December', 'July'] |
Kestemont and Mélard, 2000 |
| Perca flavescens |
In September, ovarian weights began to increase again and reached 4-5% of body weight for all age classes by mid-November, when the study was terminated |
['November', 'September'] |
Brazo, 1975 |
| Perca flavescens |
Began increasing in August and then increased siginificantly from October through March |
['October', 'August', 'March'] |
Tansichuk and Mackay, 1989 |
| Perca flavescens |
September |
['September'] |
June, 1977 |
| Perca flavescens |
Rapid gonadal development in September and October |
['October', 'September'] |
Jansen,1996 |
| Perca fluviatilis |
August and then increase proceeds regulalry through the winter and spring till the spawing time in May |
['April', 'March', 'January', 'May', 'August', 'June', 'February'] |
Le Cren, 1951 |
| Perca fluviatilis |
GSI rise steadily in August |
['August'] |
Treasurer and Holliday, 1981 |
| Perca fluviatilis |
August-September, then increase gradually until mid-March |
['August', 'March', 'September'] |
Sulistyo,1998 |
| Perca fluviatilis |
Rapid increase of oocyte diameter from late July to November-December |
['November', 'December', 'July'] |
Kestemont and Mélard, 2000 |
| Perca fluviatilis |
The development of ovocytes starts in August, and vitellogenesis starts in September |
['August', 'September'] |
Bruslé and Quignard, 2001 |
| Perca fluviatilis |
GSI increased from the onset of oogenesis at the end of July. The onsey of oogenesis coincided with a steady decline in water temperatures from the end of July, with the oocytes continously developing throughout the winter until a rapid increase in water temperature at the beginning of May, triigerered the spanwing. |
['March', 'January', 'May', 'July', 'February'] |
Noaksson, 2004 |
| Sander lucioperca |
From September to December, pre-maturation of gonads |
['December', 'September'] |
Poulet, 2004 |
| Sander lucioperca |
In the Northern hemisphere, gametogenesis is initiated in August-September when both temperature and photoperiod are decreasing. Gametes are synthesized during autumn, winter and spring |
['April', 'March', 'January', 'May', 'September', 'August', 'December', 'June', 'February', 'October', 'November'] |
Wang, 2009 |
| Sander vitreus |
September [In October the GSI is already 4.7%] |
['October', 'September'] |
Colby, 1979 |
| Sander vitreus |
October [7.6% in November] |
['October', 'November'] |
Malison, 1994 |
| Sander vitreus |
By Mid-summer, yolky vesicles are observed in most of the oocytes, and GIS rises rapidly during autum |
['August', 'July', 'September'] |
Kestemont and Mélard, 2000 |
| Sander vitreus |
August, mostly in September |
['August', 'September'] |
Henderson, 1996 |
| Sander vitreus |
Beginning of September |
['September'] |
June, 1977 |
| Coregonus lavaretus |
July |
['July'] |
Fuller, 1976 |
| Coregonus lavaretus |
July (?) |
['July'] |
Heese, 1990 |
| Coregonus albula |
May-June |
['May', 'June'] |
Demska-Zakes and Dlugosz, 1995 |
| Coregonus albula |
May-June to July, slight increase of GSI |
['May', 'July', 'June'] |
Lahti and Muje, 1991 |
| Coregonus albula |
Developped slowly from spring to the end of June (Maturation stage III: compressing and stretching phase) for the nominate form. For deepwater form, in summer and autumn, gonads mature very slowly, just passing maturation stages II and III while reaching maturation stage IV inly in december. |
['April', 'May', 'September', 'August', 'December', 'June', 'July', 'October', 'November'] |
Anwand, 1998 |
| Coregonus clupeaformis |
Initiated in early summer |
['August', 'July', 'September'] |
Rinchard, 2001 |
| Oncorhynchus kisutch |
In December for broodstock population cultured in a fish farm in Southern Chile |
['December'] |
Estay, 1998 |
| Oncorhynchus mykiss |
May |
['May'] |
Bon, 1999 |
| Oncorhynchus mykiss |
June-July |
['June', 'July'] |
Billard and Breton, 1977 |
| Oncorhynchus mykiss |
September |
['September'] |
Tyler, 1990 |
| Salmo salar |
Mean GSI increased significantly in October [In Tasmania, 6 months out-of-phase from northern hemisphere] |
['October'] |
King and Pankhurst, 2003 |
| Salmo trutta fario |
May-June |
['May', 'June'] |
Billard, 1987 |
| Salvelinus alpinus |
March [Although onset of vitellogenesis occured as early as March, there was apprently no change in oocyte size and only a modest rise in GSI until early June.] |
['March', 'June'] |
Frantzen, 1997 |
| Salvelinus alpinus |
Gonad development began in August |
['August'] |
Jamet, 1995 |
| Salvelinus fontinalis |
May-June |
['May', 'June'] |
Tam, 1986 |
| Salvelinus fontinalis |
Development begins in June for both sexes and reaches a peak in September |
['June', 'September'] |
Wydoski and Cooper, 1966 |
| Thymallus thymallus |
July and then increase regularly |
['July'] |
Witkowski, 1989 |
| Ameiurus nebulosus |
Between middle of September until late November GSI increased 2-fold |
['November', 'September'] |
Rosenblum, 1987 |
| Ameiurus nebulosus |
Beginning of May [increase later than males, not until the temperature reach 16°C] |
['May'] |
Burke, 1984 |
| Ictalurus punctatus |
GSI Increase sugnificantly from September to October and November to January |
['October', 'November', 'January', 'September'] |
Mackenzie, 1989 |
| Ictalurus punctatus |
A slight increase from November until March |
['November', 'March'] |
Banks, 1999 |
| Ictalurus punctatus |
The average GSI increases in midwinter, in November |
['February', 'November', 'March', 'January'] |
Brauhn and McCraren, 1975 |
| Ictalurus punctatus |
Sharp increase in oocyte size in October |
['October'] |
Pacoli, 1990 |
| Ictalurus punctatus |
August (In South and North Dakota) |
['August'] |
June, 1977 |
| Silurus glanis |
Yolk accumulation in the oocytes of the old generation begins in autumn, and continues for 7-8 months |
['October', 'November', 'December'] |
Zholdasova anGuseva, 1987 |
| Silurus glanis |
The peak of vitellogenesis was observed in summer (July-August), and females passed winter with the ovaries in the IV th stage of development |
['March', 'January', 'September', 'August', 'July', 'February'] |
Wisniewolski, 1988 |