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How lure prevalence, survival rate and maturity status affect catchability in cuttlefish trap fishery
Fisheries Research ( IF 2.4 ) Pub Date : 2021-02-26 , DOI: 10.1016/j.fishres.2021.105919
Konstantinos Ganias , Irini-Fotini Kompogianni , Georgios Christidis

Trap fishing is considered 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 by improving the profitability of these gears. The present study attempted to provide the necessary background for the establishment of a cuttlefish (Sepia officinalis) trap fishery in Thermaikos Gulf (Eastern Mediterranean), an area heavily fished using 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 with an artificial spawning substrate like branches of shrubs, similar to other areas, proved ineffective. Cuttlefish catches were only successful by baiting the trap with a female lure that entices males to enter the trap. The fishing method is apparently determined by the physical characteristics of the seabed. Other important factors including the shape and size of trap entrances and soaking time were also investigated to address crucial knowledge gaps and develop an optimum fishing protocol and trap technical characteristics for this potentially new métier for small-scale fisheries in Greece.



中文翻译:

诱饵流行率,成活率和成熟度如何影响乌贼陷阱捕捞业的可捕捞性

诱捕技术被认为是一种影响力小,省油的捕捞技术,引起了越来越多的关注。但是,由于捕捞效率低,渔业只能通过提高这些渔具的获利能力来实现可持续性。本研究试图为建立乌贼(乌贼墨)提供必要的背景。)在Thermaikos海湾(地中海东部)中捕捞渔业,该地区使用可持续性值得怀疑的渔具(如the鱼网)大量捕捞。这项任务需要从其他捕鱼区实施渔具类型和捕鱼操作技术。但是,与其他区域相似,使用空陷阱或带有人工产卵基质(例如灌木的分支)的陷阱被证明是无效的。墨鱼捕捞只有通过用诱使雄性进入诱捕器的雌性诱饵诱捕诱捕器才能成功。捕鱼方法显然是由海床的物理特性决定的。

更新日期:2021-02-26
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