TY  - JOUR
T1  - The delayed mortality of discarded sea bream (Sparus aurata Linnaeus, 1758) in trawl simulation: an experimental appraisal
TT  - Deneysel yaklaşımla trol simülasyonunda ıskarta edilen çipurada (Sparus aurata Linnaeus, 1758) gecikmiş ölüm
AU  - Demirci, Aydın
AU  - Şimşek, Emrah
PY  - 2018
DA  - September
DO  - 10.12714/egejfas.2018.35.3.02
JF  - Ege Journal of Fisheries and Aquatic Sciences
JO  - EgeJFAS
PB  - Ege Üniversitesi
WT  - DergiPark
SN  - 2148-3140
SP  - 237
EP  - 241
VL  - 35
IS  - 3
LA  - en
AB  - This study aims to bring to lightbehavioral impairment and the delayed mortality of discards below legal catch ratein a simulated trawl operation. Behavioral impairment of 126 fish in theaftermath of trawling operation was tested in two different methods throughobserving their reflexes. In the first method, all the fish in the tank wascompared with the control groups on account of their responds to differentstimulants, while in the second method, reflex measurement was individuallycarried out. Reflexes from these two processes were taken as the extent ofbehavioral impairment and a relation with delayed mortality was established. A considerable number of fatalitiesamong those returning to the water came about within 24 hours. There was aproportional connection between behavioral impairment and delayed mortality.However high the behavioral impairment might be, the mortality rate remained ata certain proportion. A considerable number of fish survived under confinedmedium in the laboratory tanks.
KW  - Reflex
KW  - Behavioral Impairment
KW  - Trawl Simulation
KW  - Discard
KW  - Delayed Mortality
N2  - Bu çalışmanın amacı sanal bir trol operasyonu gerçekleştirerek yasalyakalama boyunun altında olan ıskartaların davranış bozukluğu ile gecikmiş ölümoranı arasındaki ilişkiyi açıklamaktır. Deneysel trol çekimleri sonrasında 120balığın davranış bozukluğu, farklı uyarıcılara karşı reflekslerin gözlemiyoluyla iki farklı metotla test edilmiştir. İlk metotta gözlem tüm balıklarınfarklı uyarıcılara karşı reflekslerin gözlemi toplu halde kontrol grupları ilekarşılaştırılırken ikinci metotta refleks testleri bireysel olarak yapılmıştır.İki metotta da davranış bozukluğunun derecesi olarak alınan refleksler ilegecikmiş ölüm arasında bir ilişki bulunmuştur. Denize canlı dönen bireylerdekiölümlerin önemli bir kısmı yaklaşık 24 saat sonra gerçekleşmektedir. Davranışbozukluğu ile gecikmiş ölüm arasında doğrusal ilişki bulunmuştur fakat davranışbozukluğu ne kadar yüksek olursa olsun ölüm belli bir oranda kalmaktadır.Canlıların önemli bir kısmı laboratuvar ortamındaki kısıtlanan tanklardacanlığını sürdürmüştür.
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UR  - https://doi.org/10.12714/egejfas.2018.35.3.02
L1  - https://dergipark.org.tr/tr/download/article-file/543925
ER  -