Gillnets are the primary fishing gear used in tropical multi‐species fisheries along the Iranian southern coastal waters. Therefore, it is necessary to investigate the catch composition and performance of fishing gear for the possible negative effects on the stocks. Catch data and length frequency distribution (just for Kingfish, S. commerson) were examined for three kinds of drift gillnets: 1) small‐meshed nets, 2) medium‐meshed nets, and 3) nets with a single mesh size of 165 mm. This study was conducted in the northern part of the Persian Gulf from 2014 to 2015. Overall, 60 species of 32 families from four fish groups (i.e., Pelagic, Demersal, Benthopelagic, and Reef‐associated) were recorded. Each net‐type was used to target more than one species, with most species being considered as bycatch. Commercial fish species were caught the most, accounting for around 83% of the total catches. S. commerson is targeted by all kinds of nets, with medium‐meshed nets being most efficient. The majority of S. commerson caught by the nets were immature. Overall, the total ban of gillnets with small mesh sizes is recommended to protect young S. commerson and prevent the possible risk of growth overfishing. Studies on gillnet selectivity are needed to set minimum mesh regulations for S. commerson and other commercial species if the potential impacts of gillnet are known.

中文翻译：

---

在波斯湾北部的一种以多金枪鱼（Scomberomorus commerson）为重点的多品种渔业中捕获流刺刺网的组成

刺网是伊朗南部沿海水域热带多物种渔业中使用的主要渔具。因此，有必要研究渔具的渔获量组成和性能，以免对种群造成负面影响。捕获数据和长度频率分布（仅适用于Kingfish，S。commerson）检查了三种漂移刺网：1）小网眼的蚊帐，2）中网眼的蚊帐，以及3）单一网眼尺寸为165 mm的蚊帐。这项研究于2014年至2015年在波斯湾北部进行。总体上，记录了来自四个鱼类（即远洋，深海，底栖和礁相关）的32个科的60种。每种网型都被用来针对一种以上的物种，大多数物种被认为是兼捕。商业鱼类的捕获量最多，约占总捕获量的83％。Comm。S. commerson受到各种蚊帐的攻击，而中目筛网效率最高。多数S. Commmerson被网子抓住还不成熟。总体而言，建议完全禁止使用网眼较小的刺网，以保护年轻的沙门氏菌并防止过度捕捞的风险。如果刺网的潜在影响是已知的，则需要研究刺网的选择性，以设置针对沙门氏菌和其他商业物种的最低网目规则。