**fecundity with length**.

fecundity [is] often attributed to length than weighing, because its decrease length [of] infinitesimal relatip [do] not like weight able to decrease easily. Matter which must be paid attention in making [relation/link] of fecundity with length if taking sampel which repeatedly have to take a care, because if taken fish when gonad [is] growing this matter [do] not represent growth of somatik. Become here difference there must be [among/between] growth of somatik with growth of gonad. Most [all] writer plot absolute fecundity with fish length and that [relation/link] [is]:

Where

F = fecundity,

L = long [of] fish,

and a of b represent got konstanta of data.

The equation if [is] likened into to logarithm will get equation of straight line regresi

Log F = log a + b log L

Price Exponent of b range from 2,34 - 5,28 and most gyrating above 3 ( Bagenal, in Gerking, 1967). There [is] also making Correlation [among/between] fecundity with length by ordinary regresi later;then dites seen its correlation coefficient. Hoyt ( 1971) getting equation for the length of fish with amount of ripe egg of fish of silver jaw ( Bucata Ericymba) that is

Y = (- 1379,3 + 32,74 X )

with correlation coefficient of r = 0,89.

This correlation show strong and positive [relation/link] from both variable. Additional [of] length have correlation [to] with accretion of egg. Healy ( 1971) getting linear correlation almost [among/between] fecundity with fish length of sand goby ( Minutes pallas Gobius), but variation [of] among fish Which [is] of uniform length, fecundity different each other and its correlation coefficient lower that is r = 0,55. In investigating fish of fall fish ( Corporalis Semotilus), Reed ( 1971) getting [relation/link] [among/between] fecundity with fish length [is].

F = - 14.913,3 + 76,7 L

with correlation coefficient of r = 0,958.

Dennison and of Bulkley ( 1972) during twice accurate summer [of] potency reproduce fish of bullhead ( Ictalurus braze) [in] Clear Lake Iowa, for example getting that [there] no correlation [among/between] fecundity with body length ( Picture 7). Correlation coefficient got for year 1969, r = 0,19 and for year 1970, r = 0,09. Lowering of got correlation possible because of extreme rotation boundary of fecundity [at] [is] same size measure represent matter which [do] not habit. Batts ( 1972) getting low r [at] fish of skipjack poor (Katsuwonus Pelamis ), showing fecundity which vary [at] [is] same footage.

sumber. M. Ichsan Effendie

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