نوع مقاله : مقاله پژوهشی
نویسندگان
1 پژوهشکده اکولوژی خلیجفارس و دریای عمان، مؤسسه تحقیقات علوم شیلاتی کشور، سازمان تحقیقات، آموزش و ترویج کشاورزی
2 پژوهشکده اکولوژی خلیجفارس و دریای عمان، مؤسسه تحقیقات علوم شیلاتی کشور، سازمان تحقیقات، آموزش و ترویج کشاورزی، بندر عباس، ایران
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
Biological information on commercially important fishes remains limited in many parts of the northern Persian Gulf despite increasing fishing effort in recent years. This study examined the length-weight relationship, condition factor, and length-frequency distribution of Longnose Trevally, Platycaranx chrysophrys, collected from the Basaidu area, northwest of Qeshm Island, Iran. A total of 42 individuals were sampled in December 2025. Total length was measured to the nearest 1 mm and body weight to the nearest 0.01 g. Length-weight relationship parameters were estimated using log-transformed linear regression, and Fulton’s condition factor was calculated for each specimen. The mean total length and weight were 37.60 cm and 613.10 g, respectively, and the mean condition factor was 1.19. The length-weight relationship was estimated as W = 0.2622L^2.13 (R² = 0.81), indicating negative allometric growth. Most individuals were concentrated in the 34-36 cm length class, and the observed size range was smaller than that reported in several previous studies from the region. These findings provide preliminary evidence of size truncation in the exploited stock and may reflect the effects of fishing pressure; however, broader seasonal and spatial sampling is required for robust assessment.
کلیدواژهها [English]
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