کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4544737 | 1626869 | 2006 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Gill net selectivity for perch (Perca fluviatilis) in the Szczecin Lagoon, Poland Gill net selectivity for perch (Perca fluviatilis) in the Szczecin Lagoon, Poland](/preview/png/4544737.png)
This paper presents the scientific basis for changes in the minimum mesh size in gill nets, from 28 to 30 mm, introduced by fishery management in Poland to limit the catch of undersized perch (those less than 17 cm total length). Experimental fishing with six different mesh sizes was performed in accordance with commercial fisheries practice. A bi-normal selection curve was fitted to the data by including the between-set variation in the model. The locations of the primary and secondary modes of the bi-normal curve on the transformed length scale (length/mesh) were estimated to be 6.95 and 7.41, respectively. The results indicated that a minimum mesh size in gill nets of 28 mm should be sufficient to ensure a low level of discards as well as protecting the interests of fishermen.
Journal: Fisheries Research - Volume 80, Issues 2–3, September 2006, Pages 339–344