Male - Resting period

(1-9 months)


Species Primary Data Secondary Data Reference
Anguilla anguilla About 0.6 ± 0.28 for the yellow stage and 1.78 ± for the silver stage 0.6 Acou et al, 2003
Anguilla anguilla > 1.4% for the silver stage 1.4 Marchelidon et al, 1999
Aphanius iberus From September to February 6.0 Vargas and De Sostoa, 1997
Valencia hispanica One period of quiescence: August to December 6.0 Caiola et al, 2001
Barbatula barbatula 1 [Short] 1.0 Skryabin, 1993
Barbatula barbatula 1 [Short] 1.0 Saat et al, 2003
Barbatula barbatula 2.8± 0.43 [After spawning in May] 2.8 Skryabin, 1993
Barbatula barbatula 2-8 [In July and beginning of August] 5.0 Saat et al, 2003
Barbatula barbatula From July to August, the GSI ranges between 3 and 20%, the higher values being largely late-spawners or non-spawners 3.0 Smyly, 1955
Cobitis taenia Reduction in weight between June and september 2.0 Robotham, 1981
Cobitis taenia Decrease between August and November 5.0 Marconato and Rasotto, 1989
Cobitis taenia A phase or relative quiescence in gonad development follows preceeding until the next spring [From July to May] 12.0 Vaino and Saat, 2003
Cobitis taenia 3-6 [In late July] 4.5 Vaino and Saat, 2003
Cobitis paludica A period of quiescence of 3 month [September-November] 3.0 Oliva-Paterna et al, 2002
Blicca bjoerkna Relatively long period 0.0 Rinchard et al, 1996
Blicca bjoerkna About 5 [July until the next spring] 5.0 Rinchard and Kestemont, 1996
Blicca bjoerkna The ovary of the white bream enters a period of tranquillity between November and March 5.0 Lefler et al, 2008
Abramis brama About one month 0.0 Witkowski et al, 1989
Abramis brama The minimum values are found in June and July, which corresponds to a resting period of gonads after spawning 3.0 Kompowski, 1982
Abramis brama GSI decreases after spawning to 0.88-3.1% in females with single batch spawning, and to 4.6-6.2% in females spawning in batches. In the latter females, the ovary reaches 10-16.3% of body weight again within 14-30 days 1.99 Brylinska and Boron, 2004
Alburnoides bipunctatus 1 [Short in August] 1.0 Yildirim et al, 1999
Alburnoides bipunctatus Spirlin collected after the spawning season (i.e. in July and especially in August) demosntrated different characteristics compared to those sampled during the spawning season. In July, 3 out of 5 fish ovaries still contained yolked oocytes, however, one female was likely to release one more spawning batch, whereas others appeared undergoing atretic process [...] In August, virtually none of the ovaries analyzed contained yolked oocytes, and the mean diameter was even 0.48 mm lower than that of sample from June 25 [...] 3.0 Polacik and Kovac, 2006
Alburnoides bipunctatus 2.5 ± 0.8 [n=5] 2.5 Yildirim et al, 1999
Alburnus alburnus Relatively long period 0.0 Rinchard et al, 1996
Alburnus alburnus >2 (August) 2.0 Rinchard and Kestemont, 1996
Aspius aspius 3-3.5 [Between Mid-May until end of August] 3.25 Shikhshabekov, 1979
Aspius aspius 1.61 [Between May to August] 1.61 Kompowski et Neja, 2004
Aspius aspius 1.1 1.1 Shikhshabekov, 1979
Aspius aspius In April, the average female GSI fell to 1.77, which indicates that the majority of the studied fish had already spawned. In May the female GSI value was even lower at 1.04. 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. 1.77 Kompowski et Neja, 2004
Barbus barbus There seems to be a two-month quiescent period (July-August) 3.0 Lobon-Cervia and Fernandez-Delgado, 1984
Barbus barbus Following early spring spawning oocytes in the stage of primary growth are in majority in the ovary. Mitotically dividing oogonia, non-ovulated oocytes and eggs that were not released during spawning are also present in the ovaries. The latter two groups of cells undergo the process of resorption. Continuous atresia is also in process in the ovary that affects primarily the least developed functioning oocytes during the post-spawning period, i.e., those in the stage of primary growth. In all probability their number will further decrease immediatly after the spawning season 4.0 Lefler et al, 2008
Barbus barbus As vitellogenesis in the barbel does not stop in winter months, the number of oocytes in the stage of vitellogenesis in samples collected in December reaches that of cells in the stage of cortical alveoli 5.0 Lefler et al, 2008
Carassius auratus August 2.0 Kobayashi et al, 1986
Carassius auratus 1.0 ± [August] 1.0 Kobayashi et al, 1986
Chondrostoma nasus Following early spring spawning oocytes in the stage of primary growth are in majority in the ovary. Mitotically dividing oogonia, non-ovulated oocytes and eggs that were not released during spawning are also present in the ovaries. The latter two groups of cells undergo the process of resorption. Continuous atresia is also in process in the ovary that affects primarily the least developed functioning oocytes during the post-spawning period, i.e., those in the stage of primary growth. In all probability their number will further decrease immediatly after the spawning season 4.0 Lefler et al, 2008
Cyprinus carpio Few weeks after spawning 0.0 Bieniarz et al, 1978
Cyprinus carpio About two months [June-July] 3.0 Yaron and Levavi-Zermonsky, 1986
Cyprinus carpio About 5% in December-January 5.0 Smith and Walker, 2004
Cyprinus carpio Almost 0 [July] 2.0 Yaron and Levavi-Zermonsky, 1986
Cyprinus carpio Post-spawning period: June-August 3.0 Bieniarz et al, 1979
Cyprinus carpio July and august are a quiescent period of gonadal activity; a stage of regeneration 2.0 Crivelli, 1981
Cyprinus carpio Re-maturation of the ovaries requires > 3-4 months 3.5 Smith, 2004
Gobio gobio 1-2 [August-September] 1.5 Kestemont, 1987
Gobio gobio 2-3 [From July through September] 2.5 Rinchard et al, 1993
Gobio gobio < 3.10 ± 1.53 (July-August-September] 3.1 Rinchard et al, 1993
Gobio gobio About 3% [August, September] 3.0 Kestemont, 1987
Gobio gobio From July, the ovary started a recovery phase and only contained stage 1 and 2 ooctyes. One ot two months of quiscence following summer spawning 1.0 Kestemont, 1990
Leuciscus cephalus July, August 3.0 Unlu and Balci, 1993
Leuciscus cephalus < 0.5 from July until December 7.0 Kalkan et al, 2005
Leuciscus cephalus June-September quiescent period, About 1% 1.0 Mann, 1976
Leuciscus cephalus <1% [From May to September] 1.0 Sasi, 2003
Leuciscus cephalus Gonads of chub females and males after spawning remain in a resting state until September. 2.0 Zelepien, 1997
Leuciscus cephalus In June, the GSI diminished because of spawning and continued to do so to the end of July 3.0 Erdogan et al, 2002
Leuciscus leuciscus < 0.2% [From April to mid-July] 5.0 Mann, 1974
Phoxinus phoxinus August 2.0 Scott, 1979
Phoxinus phoxinus 2% [August] 2.0 Scott, 1979
Phoxinus phoxinus Very little growth takes place through the summer months 4.0 Frost, 1943
Phoxinus phoxinus Between 3 June and 15 July there was a sharp drop in total condition princiapply beacause of a fall in GSI. This decline in GSI continued until late August 3.0 Mills and Eloranta, 1985
Rutilus rutilus 3-4 (May-June-July-August) 3.5 Rinchard, 1996
Rutilus rutilus Short gonadal quiescent period 0.0 Rinchard et al, 1996
Rutilus rutilus 3 [From June to September] 3.0 Mann, 1973
Rutilus rutilus 1.5-2 months, but could be shorted in heated reservoirs 1.75 Witkowski et al, 1989
Rutilus rutilus <2% (End of May until Mid-Augsut) 2.0 Rinchard and Kestemont, 1996
Rutilus rutilus About 1 [June, July until Mid-August] 1.0 Mann, 1973
Rutilus rutilus May to June, July and stops in August [From graph] 5.0 Tarkan et al, 2006
Rutilus rutilus After the spawning period, a quiescent period of gonad activity occurs during the summer because warm temperature (>20°C) and the long hours of daulight block the development of gonads until the end of August 20.0 Gillet and Quétin, 2006
Scardinius erythrophthalmus >1 (August) 1.0 Shikhshabekov, 1979
Scardinius erythrophthalmus From June to September 5.0 Tarkan et al, 2006
Tinca tinca Between the last reproduction and the following spring (Period when water temperature is under 10°C) 10.0 Breton et al, 1980
Tinca tinca Between October and March 3.0 Linhart and Billard, 1995
Tinca tinca Period of restoration (August) and rest (since September till the end of April) lasted in tench from Lake Drweckie for 9 months. In this period all ovaries were in stage VI/II-III or VI/III, and then in stage III of maturity. Oocyte resorption was observed throughout the year. it was most intensive during fish production, especially in 1979 when water temperature showed considerable variations. 9.0 Pimpicka, 1989
Tinca tinca August-September 3.0 Alas and Solak, 2004
Tinca tinca 2.25 ± 0.1 (November) 2.25 Pinillos et al, 2003
Tinca tinca Nearly 0 in July 2.0 Yilmaz, 2002
Tinca tinca About 4 [October to March] 4.0 Linhart and Billard, 1995
Tinca tinca After spawning ovaries are in second stage. In that state they are the smallest during the yearly sexual cycle, are bloodshot, and remaining (non-spawned) oocytes are being resorbed. That state lasts 1 month. Later (from Ocotber until the beginning of April) ovaries are in the third stage of maturity. During that time growth of oocytes occurs. At the end of April/beginning of May ovaries are in the fourth maturity stage. Oocytes are being filled with yolk. At that time asynchronous development of oocytes occurs, which is typical for tench. During the next, five th maturity stage asynchrony becomes more deep. The size of ovaries reaches maximum. Four groups of different developmental advancement co-occur in the ovaries. The most mature oocytes continue yolk accumulation, the second group is at the final steps of vacuolisation, oocytes of the third group (=the last group that is going to be spawned during the spawning season) begin vacuolisation. The fourth group, which is the leats developped, will be spawned the next year. The VI-th maturity stage is ovulation (liberation of oocytes from the Graff follicles). Before ovulation nucleus moves from the centre to periphery of oocytes. 1.0 Kubu and Kouril, 1985
Vimba vimba 3 (June until August) 3.0 Shikhshabekov, 1979
Vimba vimba [July until October] 5.0 Hliwa et al, 2002
Gambusia affinis 1.0-1.1 [From January to April] 1.05 Koya et al, 1998
Esox lucius 3 Months (June to end of August) 3.0 Lenhardt, 1992
Esox lucius 3 months [June to end of August] 3.0 Billard, 1996
Esox lucius February/April (spawning period) until July 4.0 Lenhardt and Cakic, 2002
Esox lucius April until August 6.0 Treasurer, 1990
Esox lucius Almost 0% (June, July, August) 4.0 Lenhardt, 1992
Esox lucius < 1% [June, July] 1.0 Billard, 1996
Lota lota 0.5 -1.3 [July 29] 2.0 Brylinska et al, 2002
Lota lota April to August 6.0 Pulliainen and Korhonen, 1990
Gasterosteus aculeatus September to February 6.0 Copp et al, 2002
Gasterosteus aculeatus After the breeding season the weights decrease until the lowest level is attained in October 2.0 Borg and Van Veen, 1982
Gasterosteus aculeatus September 2.0 Sokolowska and Sokolowska, 2006
Gasterosteus aculeatus The post-spawning phase began in June-July, when part of the population had completed spawning and oogenesis was starting 3.0 Sokolowska and Sokolowska, 2006
Gasterosteus aculeatus About 5 5.0 Copp et al, 2002
Pungitius pungitius September to February 6.0 Copp et al, 2002
Pungitius pungitius Based on GSI graph, in August and perhaps until november 2.0 Sokolowska and Skora, 2002
Pungitius pungitius About 5 5.0 Copp et al, 2002
Lepomis gibbosus From August to March 8.0 Copp et al, 2002
Lepomis gibbosus From Setember to May 2.0 Burns, 1976
Lepomis gibbosus About 1 1.0 Copp et al, 2002
Micropterus salmoides 2 (September and October); < 1 (between September and October, declined between August, and mid-September) 2.0 Rosenblum et al, 1994
Micropterus salmoides GSI were minimal ind mid-summer 4.0 Bennett and Gibbons, 1975
Dicentrarchus labrax April to May (High percentage of atretic female) 3.0 Prat et al. (1990) General And Comparative Endocrinology 78, 361-373
Dicentrarchus labrax < 0.5 [Between June to October, at Arcachon] 6.0 Zohar et al, 1984
Dicentrarchus labrax June-October [In Arcachon, France], May-October [In Sète, France], April-July [Tunisia] 8.0 Barnabé, 1980
Dicentrarchus labrax From June to early August, oocyte development is minimal 3.0 Mayer et al, 1990
Morone americana June to end of October [From May to September, atretic oocytes were found within their ovaries] 7.0 Jackson and Sullivan, 1995
Morone americana Mature-spent. Ovaries flacid, few translucent eggs left. Ovarian membrane very vascuar, sac-like, or bloodshot (May-June). Mature-Resting. Ovaries becoming firm, and characterized by a relatively thich doameter. No eggs discernible to the naked eye, color pinkish, texture gelatinous (June-july). 3.0 Mansuetti, 1961
Morone americana 0.61 ± 0.04 (Basal summer level between June to October) 6.0 Jackson and Sullivan, 1995
Morone chrysops Mid-July to mid-October 5.0 Ruelle, 1977
Morone chrysops During the post-spawning period (May-September) 3.0 Berlinsky et al, 1995
Morone chrysops Below 1% 1.0 Ruelle, 1977
Morone saxatilis In summer, females had nothing more than primaryt growth oocytes 4.0 Woods III and Sullivan, 1993
Morone saxatilis During the post spawning season (July, Aufgust, and September), when oocyte and ovarian diameters were smallest, sex detemrination was less accurate 3.0 Blythe et al, 1994
Gymnocephalus cernua 2-3 [June, July and August] 2.5 Leino and McCormick, 1997
Gymnocephalus cernua <1 1.0 Leino and McCormick, 1997
Perca flavescens Mid-June until Mid-August 4.0 Malservisi and Magnin, 1968
Perca flavescens May until August 5.0 Dabrowski et al, 1996
Perca flavescens Late April to August 6.0 Hayes and Taylor, 1994
Perca flavescens <1% from July to August 1.0 Tansichuk and Mackay, 1989
Perca flavescens 1% (After the spawning, GSI remain low from May trought August) 1.0 Hayes and Taylor, 1994
Perca flavescens < 1% 1.0 Dabrowski et al, 1996
Perca flavescens Below 1%, in June and July 1.0 Tansichuk and Mackay, 1989
Perca fluviatilis 3-4 3.5 Sulistyo et al,1998
Perca fluviatilis 4-4.5 [From April until August] 4.25 Treasurer and Holliday, 1981
Perca fluviatilis Mid-summer 4.0 Le Cren, 1951
Perca fluviatilis After spawning, GSI rapidly decreased to the low values observed during the summer 4.0 Noaksson et al, 2004
Perca fluviatilis <1% [End of spring and summer corresponds to the post-spawning period] 1.0 Sulistyo et al,1998
Sander lucioperca From May-June the post-spawning season and from June to September the resting period 6.0 Poulet, 2004
Sander vitreus By late spring, ovaries were already filled with a large number of non-vitellogenic oocytes; indicating that female have a relatively short post-spawning quiescient period 4.0 Malison and Held, 1996b
Sander vitreus From May to October 7.0 Malison et al, 1994
Sander vitreus Walleye have a relatively short post-spawning quiescent period 0.0 Kestemont and Mélard, 2000
Sander vitreus 0.7 [July to August] 3.0 Craig, 2000
Sander vitreus <1% July to August 1.0 Colby et al, 1979
Coregonus lavaretus After spawning, the gonadosomatic ratio of females fell suddenly and remained low, about 1% of body weight, for 6 months until July[From March to May ovaries contained only primary (pre-vitellogenic) oocytes. Secondary oocytes, wihc chorion and yolkk precursors, appeared in May] 1.0 Fuller et al, 1976
Coregonus lavaretus After spawning, the gonads were basically resting until April and May 3.0 Heese, 1990
Coregonus albula 2.5-3 but up to 4-4.5 months in low temperature [January until May] 2.75 Demska-Zakes and Dlugosz, 1995
Coregonus albula 2.5-3 months 2.75 Dlugosz and Worniallo, 1985
Coregonus albula About 2 months 2.0 Witkowski et al, 1989
Coregonus albula During the winter months, vendace remain in the regenerating and resting phaseses (maturation stages VI and II) for nominate form. For deepwater form, from May until July/August 8.0 Anwand, 1998
Oncorhynchus kisutch In June to November for broodstock population cultured in a fish farm in Southern Chile 7.0 Estay et all., 1998
Oncorhynchus mykiss 1 [December] 1.0 Bon et al, 1999
Oncorhynchus mykiss 0.5 ± 0.07 [GSI remains at a minimum from December to May= very slow ovarian development phase] 7.0 Bon et al, 1999
Salmo trutta fario From January until April 5.0 Billard, 1987
Salmo trutta fario Almost 0 [From January until April] 5.0 Billard, 1987
Salvelinus alpinus Recruitement of stage II and stage III oocyes was seen 1-2 months after ovulation had occurred, and by February the next year all the post-ovulatory follicles had disappeared 1.5 Frantzen et al, 1997
Salvelinus alpinus < 0.5% (November to beginning of June) 3.0 Frantzen et al, 1997
Salvelinus alpinus 0.3 (Resting period lasted until July) 2.0 Jamet, 1995
Salvelinus fontinalis Oocyte development and yolk formation is relatively low from November until May 7.0 Tam et al, 1986
Salvelinus fontinalis November to June, < 1% 1.0 Wydoski and Cooper, 1966
Thymallus thymallus About two months: May and June 3.0 Witkowski et al, 1989
Thymallus thymallus 0.8 [May and June] 3.0 Witkowski et al, 1989
Ameiurus nebulosus 6-7 [No significant differences between November to April] 6.5 Burke et al, 1984
Ameiurus nebulosus About 1 (August-September, then slightly increased) 1.0 Rosenblum et al, 1987
Ameiurus nebulosus < 1% [No significant differences between November to April] 1.0 Burke et al, 1984
Ictalurus punctatus About 2 [GSI was low during the summer months: July and August] 2.0 Mackenzie et al, 1989
Ictalurus punctatus About 4 [From July until November] 4.0 Banks et al, 1999
Ictalurus punctatus An apparent low point in the annual ovarian cycle was reached immediatly after spawning 0.0 Brauhn and McCraren, 1975
Silurus glanis July, August: 0.42-0.81% 3.0 Zholdasova and Guseva, 1987
Silurus glanis September-October: >0.05% 3.0 Alp et al, 2004
Anguilla anguilla About 0.1 for the silver stage 0.1 Marchelidon et al, 1999
Aphanius iberus A period of repose from September to February 6.0 Vargas and De Sostoa, 1997
Valencia hispanica From August to December 6.0 Caiola et al, 2001
Barbatula barbatula 0.3-0.7 [Minimal value in mid-July, and by August GSI increased to about 1% and remained at this level until the next spring] 6.0 Saat et al, 2003
Cobitis taenia Late June and early July [similar to female cycle] 3.0 Vaino and Saat, 2003
Cobitis taenia September 2.0 Marconato and Rasotto, 1989
Cobitis paludica Short quiescence period [August-September] 3.0 Oliva-Paterna et al, 2002
Alburnoides bipunctatus 1.7 [n=3, August] 1.7 Yildirim et al, 1999
Aspius aspius 0.14 [August] 2.0 Kompowski et Neja, 2004
Barbus barbus No differences in term of GSI between September till January 3.0 Lobon-Cervia and Fernandez-Delgado, 1984
Carassius auratus 0.3 ± 0.1 [August, but a large increased was oberseved in the Autum: about 4%)] 2.0 Kobayashi et al, 1986
Cyprinus carpio Lower in december-January, about 2% 2.0 Smith and Walker, 2004
Gobio gobio 0.9 [September to October] 3.0 Kestemond, 1989
Leuciscus cephalus July to November, only germinal cells were evident 6.0 Guerriero et al, 2005
Leuciscus cephalus April to November <0.5 9.0 Sasi, 2003
Leuciscus cephalus June-September quiescent period, About 1% 1.0 Mann, 1976
Leuciscus cephalus Gonads of females after spawning remain in spawning remain state until September 2.0 Zelepien, 1997
Leuciscus leuciscus < 0.2% [From mid-April to mid-August] 6.0 Mann, 1974
Phoxinus phoxinus Almost 0 [From September to February] 6.0 Mills, 1987
Rutilus rutilus About 1 [During June-August] 1.0 Escaffre and Billard, 1976
Rutilus rutilus About 1 [June, July until August] 1.0 Mann, 1973
Rutilus rutilus June, July and August 4.0 Tarkan et al, 2006
Tinca tinca 0.21 (November) 2.0 Pinillos et al, 2003
Gambusia affinis Resting period is October to April [The GSI values (0.9-2.1%) from January to May] 1.5 Koya and Iwase, 2004
Esox lucius < 0.1 [June, July, mid-August] 4.0 Lenhardt, 1992
Esox lucius <0.2 [June-July] 3.0 Billard, 1996
Esox lucius The resting period last from June until the end of August 3.0 Lenhardt and Cakic, 2002
Esox lucius Stage I, rest from June to August, and stage IV, stage of post-spawning March to May 7.0 Hoffmann et al, 1980
Esox lucius The index declined to 0.04-0.08 after spawning in early April and rose from late August 3.0 Treasurer, 1990
Lota lota 0.5-2.7 [July 29th] 1.6 Brylinska et al, 2002
Lota lota No difference in term of GSI between April and July, and even up to October 6.0 Pulliainen and Korhonen, 1990
Gasterosteus aculeatus About 1% [From September to February] 1.0 Copp et al, 2002
Pungitius pungitius About 1% [From September to February] 1.0 Copp et al, 2002
Lepomis gibbosus October to May 8.0 Burns, 1976
Micropterus salmoides < 0,1 (September, sharp decrease in August) 3.0 Rosenblum et al, 1994
Dicentrarchus labrax < 0.5 [March to September] 8.0 Zohar et al, 1984
Dicentrarchus labrax May-November [In Arcachon, France], May-October [In Sète, France], February-September [Tunisia] 11.0 Barnabé, 1980
Dicentrarchus labrax From April to October 8.0 Gonzalez and Piferrer, 2003
Morone americana About 0,2 (Basal summer value: June, July, September) 5.0 Jackson and Sullivan, 1995
Morone americana Spent. Testes brownish white, flaccid and convoluted, with no flow or white milt upon compresison. April-early June 3.0 Mansuetti, 1961
Morone chrysops 0.1 % |From early August to 2.0 Ruelle, 1977
Morone saxatilis Male sex determination was lowest in September when testicular diameter was minimal 2.0 Blythe et al, 1994
Morone saxatilis In June, after the second reproductive season, testes from mature fish strated to regress and spermatozoa were resorbed. In September (the beginning of the third reproductive cycle) only spermatogonia were present in the testes. 3.0 Holland et al, 2000
Gymnocephalus cernua Periods in which gametogensis is absent occuring between spring and autumn [The coefficients of maturity after discharge of the spermatozoids (in the absence of spermatogensis) is on average 0.8% (range 0.5-1.2%), and after completion of the rearrangement of the somatic elements of the testes less than 0.25% 7.0 Butskaya, 1981
Perca flavescens Between 1 and 2 [After spawning, declined troughout the summer until August] 1.0 Heidinger and Kayes, 1986
Perca flavescens Below 1%, in June and July 1.0 Tansichuk and Mackay, 1989
Perca fluviatilis 0.2 ± 0.1 [Late June, July, August) 4.0 Sulistyo et al, 2000
Perca fluviatilis 0.2 [June, July] 3.0 Treasurer and Holliday, 1981
Perca fluviatilis < 1% [June, July, and most of August] 1.0 Le Cren, 1951
Sander vitreus 0.2 [June-July] 3.0 Colby et al, 1979
Sander vitreus <1% [From May through September] 1.0 Malison et al, 1994
Coregonus lavaretus It fell gradually from January to a minimum of 0.4% in June and July 4.0 Fuller et al, 1976
Coregonus lavaretus Below 1%, between February and May 1.0 Heese, 1990
Coregonus albula 0.13-0.7 % [From December until March] 5.0 Dlugosz and Worniallo, 1985
Coregonus albula During the winter months, vendace remain in the regenerating and resting phaseses (maturation stages VI and II) for nominate form. For deepwater form, from May until July/August 8.0 Anwand, 1998
Oncorhynchus gorbuscha 5.39 ± 0.5 [Spawning grounds] 5.39 Dye et al, 1986
Salmo trutta fario < 0 (April and May) 3.0 Billard, 1987
Salvelinus alpinus Almost 0 (Between December to July, value in July = 0.6%) 9.0 Jamet, 1995
Salvelinus fontinalis From November to June 8.0 Wydoski and Cooper, 1966
Thymallus thymallus 0.3% [Three months after spawning May -July] 3.0 Witkowski et al, 1989
Ameiurus nebulosus 0.15 (October, November) 3.0 Rosenblum et al, 1987
Ameiurus nebulosus From 0.100 (September) to 0.158 (mid-April), with no significant differences between the mean values 3.0 Burke et al, 1984
Ameiurus nebulosus Resting period is between mid-August to mid-April, i.e. 6 months 6.0 Burke and Leatherland, 1984
Silurus glanis 0.12-0.25% at the end of July [June-July] 3.0 Zholdasova and Guseva, 1987
Silurus glanis Low between August and November 5.0 Alp et al, 2004