LENGTH-WEIGHT RELATIONSHIPS FOR 57 FISH SPECIES OF BAKIRCAY RIVER ESTUARY IN CANDARLI BAY


Babaoğlu A. Ö. , Bayhan B., Kara A., Acarlı D.

Fresenius Environmental Bulletin, vol.30, no.12, pp.13339-13342, 2021 (Journal Indexed in SCI)

  • Publication Type: Article / Article
  • Volume: 30 Issue: 12
  • Publication Date: 2021
  • Title of Journal : Fresenius Environmental Bulletin
  • Page Numbers: pp.13339-13342

Abstract

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

estuarine areas.