Fresenius Environmental Bulletin, vol.30, no.12, pp.13339-13342, 2021 (Journal Indexed in SCI)
Known as the fourth longest river in the Aegean
sea with its 129 km length, the Bakırçay River flows
into Çandarlı Bay in the north of Aegean sea. This
study was conducted to measure length weight
relationships (LWRs) of fishes captured with
different fishing gears in the estuary of Bakırçay
River. This is the first study on this subject. The
fishes that caught by each gear and carried in boxes
to the lab were measured for total length (TL) as cm
and wet weighed (W) as g. The length-weight (LW)
relationships were estimated by W=aLb. The level of
statistical significance for r2 was determined with
LogW=loga +b.logTL. LW relationships were
calculated in 57 fish species of 27 families from
Bakırçay River Estuary in Çandarlı Bay. 3487 fish
samples were caught with beach seines, handlines,
longlines, fyke nets, scoop nets, cast net and trammel
net between November 2012 and December 2015.
The number of the samples ranged from 9
individuals for Gasterosteus aculeatus to 133 ones
for Solea solea. r² values varied from 0.84 to 0.99.
All regressions were highly significant (p<0.01).
The value b of the LW regression changed between
2.371 in Engraulis encrasicolus and 3.490 in
Syngnathus acus with a median of 3.134 where 25-
75% of the values changed from 3.010 and 3.170.
Species of Sparidae, Mugilidae and Gobiidae
families were captured more than others, which can
be accepted as a typical feature for Mediterranean