Length-Weight Relationships, Condition Factors, and Length-Length Relationships of Three Gerres Species (Gerreidae) from the Red Sea, Egypt: Implications for Fisheries Management and Conservation
Essa, F., Mekawy, I., Mahmoud, U., El-Mahdy, S. (2025). Length-Weight Relationships, Condition Factors, and Length-Length Relationships of Three Gerres Species (Gerreidae) from the Red Sea, Egypt: Implications for Fisheries Management and Conservation. EKB Journal Management System, 54(2), 386-403. doi: 10.21608/aunj.2025.366040.1122
Fatma Essa; Imam A. A. Mekawy; Usama M. Mahmoud; Samia M. El-Mahdy. "Length-Weight Relationships, Condition Factors, and Length-Length Relationships of Three Gerres Species (Gerreidae) from the Red Sea, Egypt: Implications for Fisheries Management and Conservation". EKB Journal Management System, 54, 2, 2025, 386-403. doi: 10.21608/aunj.2025.366040.1122
Essa, F., Mekawy, I., Mahmoud, U., El-Mahdy, S. (2025). 'Length-Weight Relationships, Condition Factors, and Length-Length Relationships of Three Gerres Species (Gerreidae) from the Red Sea, Egypt: Implications for Fisheries Management and Conservation', EKB Journal Management System, 54(2), pp. 386-403. doi: 10.21608/aunj.2025.366040.1122
Essa, F., Mekawy, I., Mahmoud, U., El-Mahdy, S. Length-Weight Relationships, Condition Factors, and Length-Length Relationships of Three Gerres Species (Gerreidae) from the Red Sea, Egypt: Implications for Fisheries Management and Conservation. EKB Journal Management System, 2025; 54(2): 386-403. doi: 10.21608/aunj.2025.366040.1122

Length-Weight Relationships, Condition Factors, and Length-Length Relationships of Three Gerres Species (Gerreidae) from the Red Sea, Egypt: Implications for Fisheries Management and Conservation

Assiut University Journal of Multidisciplinary Scientific Research
Volume 54, Issue 2, May 2025, Page 386-403  XML PDF (643.84 K)
Document Type: Novel Research Articles
DOI: 10.21608/aunj.2025.366040.1122
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Authors
Fatma Essa email orcid 1; Imam A. A. Mekawyorcid 1; Usama M. Mahmoudorcid 1; Samia M. El-Mahdyorcid 2
1Zoology and Entomology Department, Faculty of Science, Assiut University
24 Fisheries Division, National Institute of Oceanography and Fisheries, NIOF, Egypt
Abstract
The present study examines the length-weight relationships (LWRs), Fulton’s condition factor (Kc), relative weight condition factor (Kn) and length-length relationships (LLRs) of three Gerres species (G. longirostris, G. oyena, and G. oblongus) from Hurghada, Red Sea, Egypt, to assess their growth patterns and health. A total of 854 specimens were collected from January to December 2020. Results showed that G. longirostris and G. oyena exhibited positive allometric growth (b > 3), while G. oblongus displayed negative allometric growth (b < 3). Condition factors indicated G. longirostris had the highest overall health, with seasonal variations observed in Kn values. Length-length relationships were strongly correlated (R² > 0.90), reflecting consistent proportional growth. The findings underscore the influence of environmental factors on growth and highlight the need for sustainable fisheries management to conserve these ecologically and economically important species in the Red Sea. This study provides essential baseline data for future conservation efforts
Keywords
Length-Weight relationship; Allometric; Condition Factors; Gerres; Red Sea
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