Budakov, Ljiljana

English

Budakov Ljiljana

University of Szeged

Tiscia (Szeged), Vol. XXIII, pp. 107—114 (1989) FECUNDITY OF ESOX LUCIUS L. IN THE TISA RIVER LJILJANA BUDAKOV Provincial Bureau Environment Protection, Novi Sad (Received November 20, 1988) Abstract On the basis of collected material from 1980 to 1983 analysis of absolute and relative fecundity in relation to standard length, body mass and age, was done. In order to achieve this goal 73 mature female individuals were analysed. Also, correlation coefficient was estimated and very prominent individual variatons were noticed. Absolute fecundity was from 9495 to 114 205 and relative fecun-dity from 21.73 to 57.96 number of eggs. The average of absolute fecundity were largest in the groups of individuals with the largest values of body mass, body length and in the oldest age groups. The average values of relative fecundity were the highest in the groups of individuals characterized with small.body mass, body length and age. All these data were calculated using the expression: log F=a log x+b. Variations between real and calculated values of above mentioned parameters for absolute fecundity are directed to real values and for relative fecundity to calculated values. Introduction Ichthyofauna of Tisa river is not completely investigated concerning qualitative and quantitative aspects. Some recent papers bring some light to this problem RISTIÓ (1977) , GRGINCEVIC (1977) , MALETIN e t BUDAKOV (1983) e t BUDAKOV e t MALETIN (1984) . Also, some economically very important, as well as some rare species are not known very well. The purpose of this paper is to expand some previous investigations of Esox lucius L. concerning fecundity of this species in the Tisa river. Materials and Methods Material for investigation was collected in the period between 1980—1983 in Tisa river (Tisa Π). In the analysis 73 sprawing female individuals were used (gonads were in the 4th maturity stage). Absolute and relative fecundity in relation to strandard length, body mass and age were investigated. The relationship between absolute and relative fecundity and body length, body mass and age groups is presented using linear regression: y—ax+b. Also, correlation coefficients are calculated. Variations of absolute and relative fecundity in relation to standard length, body mass and age were calculated according to the formula: log F=log x+b, F= fecundity, χ=basic biological parameter which shows relation between these basic biological parameters and fecundity (method of the smallest square and logarithmic values). 107' Táb. 1. Absolute anã relative fecundity of Esox lucius L.from Tisa depending on mass. Correlation η MASS M ± m ABSOLUTE group min— -max M ± 4 0—400 310,0+ 22,73 45,46 9 495,00- 16 578,40 13 235,40 + 22 401—800 578,63 ± 26,37 123,71 10 965,00- .38 190,00 22 548,35 + 22 801—1200 920,00 ± 24,96 117,08 26 100,00- 64 337,00 37 536,24 + 13 1201—1600 1505,00+ 31,90 114,85 28 008,50- 74 855,00 54 072,50 + 7 1601—2000 1825,71 ± 44,05 116,31 39 556,80--101 606,40 71 420,17 + 2 2001—2400 2240,00 ± 40,00 56,56 90037,50- 92 820,00 91 428,75 + 2 2401—2800 2605,00 + 195,58 275,77 79 337,80--110120,80 94 729,30 + 1 2801—3200 2900,00+ — — 114 205,00 + Tab. 2. Absolute and relative fecundity of Esox lucius L. from Tisa depending on standard lenght. η LENGHT M + m ABSOLUTE group min—max σ M + 5 281—340 313,20+ 8,42 9 495,00— 16 578,40 18,79 12 781,32 + 18 341—300 352,22+ 3,89 10965,00— 38 190,00 16,50 23 810,56 + 23 401—460 428,47+ 3,62 19 598,40— 64 337,00 17,34 34 358,64 + 15 461—520 492,66+ 4,32 36 835,00— 74 865,00 16,74 51 897,55 + 8 521—580 552,75+ 6,11 39 556,80— 101 606,40 17,23 73 747,33 + 4 581—640 610,50 + 11,52 79 337,SO- 114 205,00 23,04 99 120,90 + Tab. 3. Absolute and relative fecundity of Esox lucius L. from Tisa depending on age. Correlation η AGE ABSOLUTE FECUNDITY GROUP . min-—max M + m σ r 3 2+ 28 131,60-- 59 802,70 42 607,76 + 9254,12 16 009,63 29 3 + 9 495,00--110120,80 42 810,15 + 4675,58 21 152,58 21 4 + 10 965,00--105 212,80 39 941,85 + 4311,29 19 745,74 0,81149 18 5 + 13 890,80--101 606,40 40151,25 + 5937,55 24 462,74 1 6 + 79 337,80+ — — 1 Ί* 114 205,00+ — 108' between fecundity and mass. FECUNDITY RELATIVE FECUNDITY m σ г min— -max M ± m σ г 1 712,24 342,48 0,670 69 30,62--48,94 42,60 ±4,08 8,17 0,092 10 1 376,19 6 454,36 0,693 14 26,10--53,04 37,16± 1,57 7,39 0,219 41 2 405,72 11282,85 0,746 31 29,44--57,96 39,82 ±1,80 8,48 0,408 76 3 853,76 13 873,57 -0,428 57 24,35--51,63 38,74 ±2,44 8,78 0,031 80 7 673,55 20 258,18 0,686 00 21,73--51,31 38,84 ±3,53 9,33 -0 ,139 95 1 395,40 1 967,52 -1 ,00000 39,49--42,19 40,84 ±1,35 1,90 -1 ,00000 15 437,49 21 766,86 1,00000 32,93--39,32 36,12±3,20 4,52 1 000,00 — — · — 39,38 ± — — — Correlation between fecundity and standard lenght FECUNDITY RELATIVE FECUNDITY m σ г min— -max M ± m σ г 1405,68 3 134,68 -0,170 29 30,62--48,94 39,30±4,58 10,22 -0 ,740 85 1612,55 6 837,24 0,725 И 24,34--53,04 38,77 ±1,70 7,24 0,114 57 2361,06 11 309,51 0,383 46 26,48--57,96 38,74± 1,89 9,08 0,165 36 2494,16 11 413,27 0,535 51 25,05--51,63 38,88 ±2,26 8,74 -0 ,028 40 7048,55 19 876,92 -0,024 23 21,73--51,31 38,92 ±3,06 8,64 -0 ,272 39 8060,19 16 120,38 0,840 25 32,92--42,19 38,45 ±1,96 3,92 0,053 03 between fecundity and age groups 109' Results and Discussion The individual absolute fecundity is very different in Esox lucius L. and other fish species. Minimal values of absolute fecundity measuring 9495 were presented in the smallest body mass groups up to 400 g and maximal 114 205 were in the largest mass group from 2801 to 3200 g. " Increasing average values of mass groups was associated with an increase of average values of absolute fecundity which were ranged from 13 235.40 to 114 205 number of eggs. In the smallest mass groups correlation is positive and average and in larger mass groups is absent. The highest correlation is estimated in mass group measuring 801—1200 g (/-=0.746 31). Relative fecundity is calculated from 21.73 to 57.96 numbers of eggs. The largest values of relative fecundity are 42.60 in the mass groups up to 400 g and smallest 36.12 in mass group from 2401 to 2800 g. The highest correlation coefficient r= =0.408 76 was present in the mass group from 801 to 1200 g. In other group this parameter was postitive, low or absent. The smallest and the largest individuals as well as length values of absolute fecundity and average values of relative fecundity are present in the smallest and largest body length group with correlation coefficient r=0.840 25 which is positive and high or in relative fecundity positive and low (r=0.165 36) in body length group 401—460 mm. Absolute fecundity of Esox lucius L. of age 2+ and 3+ has some values (42 607.76 —42 810.15 number of eggs, in the group 4+ this value is decreased, and finally in the age group 7+ value absolute fecundity is increased with a positive and high correla-tion coefficient (0.811 49). In the relative fecundity correlation coefficient is negative and average (0.548 02). Variations between real and calculated values for absolute fecundity in relation to body mass, body length and age groups (directed to the real values) are presented in the table 4. The most prominent variations are presented in the mass groups 2001/2400 g directed to real values and measuring 5812.04 or 6.35%. Regarding variations of relative fecundity which are directed to real values and they are smaller than calculated, making differences in all mass groups directed to calculated values. Variations between real and calculated values concerning absolute fecundity depending on body length groups directed to real values are largest in the body length group 521—580 mm accounting for 3545.05 or 18.36%. Variations of relative fecundity directed to real values are not detected. Calcu-lated values are much higher. Comparing variations between real and calculated values for absolute and relative fecundity, it was evident that they were higher in individuales labelled as 7 + account-ing for 47.50 or 10.12% and directed to real values. In single mass, body length or age group minimal values of absolute and relative fecundity could be ten times smaller than maximal values (SPANOVSKAJA i SOLONI-NOVA 1983). Our results confirm prominent individual variations. Similar results were report-ed by TARNAVSKIJ (1965), PERVOZVANSKIJ (1984), SAZANOVA (1979) i MOHOV (1980). The medium values of absolute fecundity increased with increasing of average 110' Tab. 4. Real and calculated values of absolute and relative fecundity of Esox lucius L. from Tisa depending of mass, length and age groups η X mass X ab. fee. cai. ab. fee. diff. % X rei. f. cal. r. f. diff. % 0—400 4 310,00 13 235,40 12815,15 430,24 3,17 42,60 ' 52,00 -9 ,40 22,06 401—800 22 578,53 22 548,35 23 263,95 -715,60 3,17 37,16 51,84 -14,68 39,50 801—120 23 920,00 37 536,24 36183,08 1 352,15 3,60 39,82 51,94 -12,12 30,43 Mass 1201—1600 12 1505,00 54072,50 57 533,22 - 3 460,72 6,40 38,74 51,87 -13,13 33,89 group 1601—2000 7 1825,71 71 420,17 70 184,07 1 236,09 1,73 38,84 51,87 -13,03 33,54 2001—2400 2 2240,00 91 428,75 85 616,70 5 812,04 6,35 40,84 51,97 -11,13 27,25 2401—2800 2 2605,00 94 729,30 97 747,37 3 018,07 3,18 36,12 51,77 -15,65 43,32 - 2801—3200 1 2900,00 114 205,00 109159,26 - 5 045,73 4,41 39,38 51,90 -12,52 31,79 281—340 5 313,20 12 781,32 14095,97 -1314,65 10,28 39,30 42,76 -3 .46 8,80 341—400 18 352,22 23 810,56 19 606,25 1 204,30 17,65 38,77 42,80 -4 ,03 10,39 Lenght 401—460 23 428,47 34 358,64 35 508,61 - 1 149,97 3,34 38,74 42,88 -4 ,14 10,68 group 461—520 15 492,66 51 897,55 52 758,58 -861,03 1,63 38,88 42,94 -4 ,06 10,44 521—580 8 552,75 73 747,33 60 202,27 3 545,05 18,36 38,92 42,98 -4 ,06 10,43 581—640 4 610,50 99 120,90 95 550,33 3 570,56 3,60 38,45 43,02 -4 ,57 11,88 2+ 3 42 607,76 32 889,55 9 718,20 29,54 41,38 40,59 0,78 1,92 3 + 29 42 810,15 43 063,88 -253,73 0;58 38,95 39,00 -ц.0,05 0,12 Age 4+ 21 39 941,85 52 920,75 - 1 2 978,90 24,52 39,25 37,83 1,41 3,72 group 5 + 18 40151,25 61 037,45 - 2 0 886,20 34,21 37,97 37,04 0,92 2,48 6+ 1 79 337,80 69 291,69 10 046,10 . 14,49 32,92 36,35 -3 ,43 9,43 7+ 1 114 205,00 77 424,85 36 780,14 47,50 39,38 35,75 3,62 10,12 values of body mass, body length and age, and were the highest in the largest body mass, body length and the oldest groups. Similar regularity was presented by TARNAVSKIJ (1965), TERLECKI (1973), BA-NËNENENE (1978) and KORVIN—KOSSAKOWSKI (1976) reports that increasing of ab-solute fecundity with increasing of body mass is linear, but with body length, change is parabolic line. Age does not affect absolute fecundity, but calculated values are regular. Relative fecundity compared with changes in the body mass, body length and age of Esox lucius L. does not show regularity. According to the same author, with an increase of the egg diameter, relative fecundity also becomes higher. Minimal and maximal values of relative fecundity Esox lucius L. from the Tisa river are much higher than values reported by SOLOV'EVA (1965), TERLECKI (1973), BANËNENENE (1978) and al. In Esox lucius L. a real, relative fecundity has a tendency of increasing from northern to southern area. Conclusions 1. Prominent individual variations of body mass, body length and age were noticed. 2. The medium values of absolute fecundity increased with an increase of average values of body mass, body length and age, and are the highest in the largest body mass, body length and age groups. 3. Relative fecundity is larger in the smaller body mass, body length and age groups. 4. Variations between real and calculated values for absolute fecundity depend-ing on body mass, body length and age groups are directed to real values, but for relative fecundity they are directed to calculated values. References BANËNENENE, JA. К . (1978): Biologija scuki vodoemov Litovskoj SSR. 2 . Polovoe sozrevanie i plodovitost'scuki oz. Dusja (Biology of pike of the reservoirs of the Lithauanian SSR. 2. Sexual maturity a"fid fecundity of pike of the lake Dusia). — Tr. AN SSSR, C, 22/82, 95—100. BUDAKOV, L J . — M A L E T Í N , S. (1984): Dynamycs of longitudinal growth and body mass Esox lucius L . Blicca bjoerkna L . and Carassius auratus gibelio BLOCH in the Tisa. — Tiscia (Szeged) 19, 173—178. GRGINCEVIC, M. (1979): Ekologija i problem hibridizacije vrste Abramis ballerus L. u nekim lokali-tetima Vojvodine. — Doktorska disertacija (Novi Sad). KORWIN-KOSSAKOWSKI, M. (1976): Plodnosé i wzrost szczupaka (Esox lucius LINNAEUS 1758) ζ jeziora Warniak. (The fecundity and the growth of pike (Esox lucius LINNAEUS 1758) from the Warniak Lake). — Roczniki neuk rolniczych, 97, 45—61. MALETÍN, S .—BUDAKOV, L J . ( 1 9 8 3 ) : Growth of some of fish in the Tisa river. — Tiscia (Szeged), 18, 1 1 3 — 1 1 7 . MOHOV, G. Μ. (1980): Sutocny ritm pitanija Scuki Ladozskogo ozerà. (Diurnal rythm of feeding of the Ladoga Lake pike). — "Sb. nauc. tr. ΝΠ oz. irec. ryb." 159, 20—31. PERVOZVANSKIJ, B . JA. ( 1 9 8 4 ) : Biologija scuki Esox lucius L. (Esocidae) vodoemov sistemy r. Kamen-noja. (Biology of the pike Esox lucius L. (Esocidae) of the waterbodies of the river Kamennaya (river Kern' basin, the White sea). — Vopr. iht. 24, 5 4 — 6 8 . RiSTió, M. (1977): Ribe i ribolov u slatkim vodama. — Nolit, Beograd. SAZANOVA, E. A. (1979): Osobenosti razmnozenija scuki ν Pskovsko-tudskom ozere. (Characteristic features of the pike reproduction in Pskov-Chudskoe Lake). — Sb. nauc. str. N11 oz. i ree. ryb. H-va 139, 145—150. 112' SOLOV'EVA, N. S. (1965): О plodovitosti ryb Srednej Kamy. — Uc. zap. Permsk. gos. un-ta, 125, 95—99. SPANOVSKAJA, V. D .—SOLONINOVA, L. N. (1983): О plodovitosti scuki Esox lucius L. (Esocidae) ν predelah ее areala. (On fecundity of the pike Esox lucius L. (Esocidae) within its distrubiton range). — Vopr. iht. 23, 797—804. TARNAVSKIJ, N . P . (1965): Ihtiofauna Dnepra Ν zone Kievskogo vodohraniliäca. — Ryb. hoz. Res-publ. mezvedom. temat. nauc. sb. 2, 48—55. TERLECKI, J . ( 1 9 7 3 ) : Plodnosc szczupaka — Esox lucius (LINNAEUS 1 7 5 8 ) zjeziora Sniardwy. (Fecun-dity of pike — Esox lucius LINNAEUS 1 7 5 8 from Lake Sniardwy). — Roczniki nauk rolniczyc 3, 1 6 1 — 1 7 6 . A Tisza csukáinak termékenysége BUDAKOV LJILJANA Tartományi Természetvédelmi Hivatal, Újvidék Kivonat A szerző az 1980—83-ban gyűjtött 73 ivarérett ikráshal abszolút és relatív termékenységének vizsgálatát a testhossz, testtömeg és életkor függvényében, korrelációs koefficiensszámítással végezte. Megállapítást nyert, hogy az abszolút termékenység 9495—114 205, a relatív 21,73—57,96 ikrát tesz ki. A log F=a log x + b képlettel számított abszolút termékenység átlagértéke a legöregebb és legnagyobb testtömegű és testhosszú egyedeknél a legnagyobb, a relatív pedig a legfiatalabb és legkisebb példányok esetében. A vizsgált paraméterek tényleges és számítással kapott értéke közötti eltérés az abszolút termékenység esetében a tényleges, a relatívnál a számított értékek felé hajlik. Плодовитость щуки Esox Lucius L. в р. Тиса Лиляна Будаков Краевая служда по защтите природы, г. Нови Сад Резюме На основании материала, полученного в период с 1980 по 1983 г.г. выполнен анализ абсолютной и относителной плодовитости в отношении к стандартной длине, весу и росту при осмотре половозрелых самок. Сделаны также расчеты коэффициентов корреляций. При этом установлены большие индивидуальные вариации. Абсолютная плодовитость наблю-далась в пределах от 9495,00 до 114 205, а относительная от 21,73 до 57,96 икринок. Средние значения абсолютной плодовитости самые большие в группах с самым большим весом, дли-ной и возростом, а относительная плодовитость — в группах, характеризующихся неболь-шим весом, длиной и младшим возростом. Расчет выполнен на основании формулы: log F = = ologjc + ¿. Отступления между фактическими и расчитанными значениями указанных параметров для абсолютной плодовитости относятся в пользу фактических значений, а для относительной плодовитости — в пользу расчетных. i 113 Plodnost stuke Esox lucios L. u Tisi LJILJANA BUDAKOV Pokrajinski zavod za zastitu prirode u Novom Sadu Izvod Na osnovu materijala sakupljenog u periodu od 1980. do 1983. godine analizirana je apsolutna i relativna plodnost u odnosu na standardnu duzinu, masu tela i uzrast, pregledom 73 poíno zrelih zenki. Izracunati su i koeficijenti korelacije. Konstatovana su velika individualna variranja. Apsolutna plodnost kretala se od 9495,00 do 114 205 a relativna od 21,73 do 57,96 komada jaja. Srednje vred-nosti apsolutne plodnosti su najveée kod najvecih masenih i duzinskih i najstarijih uzrasnih grupa, a relativna plodnost kod manjih masenih, duzinskih i mladjih zurasnih grupa, racunate formulom: l o g . F = a l o g * + ò . Odstupanje izmedju stvarnih i izracunatih vrednosti navedenih parametará za apsolutnu plodnost je u korist stvarnih vrednosti, a za relativnu plodnost u korist izraöunatih. 114' f 

Fecundity of Esox lucius L. in the Tisa river

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Fecundity of Esox lucius L. in the Tisa river

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