Assessing the effectiveness of cuttlefish traps based on lure prevalence, survival and maturity status

Trap fishing is viewed as a low impact and fuel-efficient capture technique that is drawing increasing attention. However, due to their low capture efficiency fisheries sustainability may only be attained through improving profitability of these gears. The present study attempted to provide the necessary background for the establishment of a cuttlefish trap fishery in Thermaikos gulf (E. Mediterranean), a heavily fished area by gears of questionable sustainability such as the trammel nets. This task required the implementation of gear types and fishing operation techniques from other fishing areas. However, the use of empty traps or traps equipped with an artificial spawning substrate like branches of shrubs proved ineffective. Cuttlefish catches were only successful by baiting the cuttlefish trap with a female lure which entices males to enter the trap. We hereby propose that the method of choice is determined by the physical characteristics of the fishing-ground area. Other important ...

笼捕法（Trap fishing）被视为一种低生态影响、低燃油消耗的捕捞技术，正受到日益广泛的关注。然而，由于其捕捞效率偏低，仅通过提升这类渔具的盈利性，方可实现该领域的渔业可持续性。本研究旨在为在东地中海塞尔迈湾（Thermaikos gulf）建立乌贼笼捕渔业提供必要的基础背景——该区域为高强度捕捞海域，所使用的三层刺网（trammel nets）等渔具的可持续性存疑。为此，需借鉴其他捕捞区域的渔具类型与捕捞作业技术。但实践表明，使用空笼或配备灌木枝条等人工产卵基质的笼具均未取得理想效果。仅当以雌性诱饵对乌贼笼进行诱捕、以此引诱雄性乌贼进入笼具时，乌贼捕捞才可获得成功。本文提出，优选捕捞方法需依据捕捞海域的物理特性确定。其他重要……