Reproductive features of Gerres longirostris Lacepède, 1801 (Perciformes: Gerreidae) off the Red Sea coast of Jeddah, Saudi Arabia
Sustainable management and conservation strategies are crucial for any species of Gerreidae. Without comprehensive research on population biology, maintaining a balance between having healthy natural stocks and the socio-economic benefit of fisheries is difficult. Therefore, we studied some aspects...
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Sciendo
2024-06-01
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| Series: | Oceanological and Hydrobiological Studies |
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| Online Access: | https://doi.org/10.26881/oahs-2024.2.07 |
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| author | Gabr Mohamed Hosny Al-Harbi Mamdoh Ali Sumon Md Afsar Ahmed |
| author_facet | Gabr Mohamed Hosny Al-Harbi Mamdoh Ali Sumon Md Afsar Ahmed |
| author_sort | Gabr Mohamed Hosny |
| collection | DOAJ |
| description | Sustainable management and conservation strategies are crucial for any species of Gerreidae. Without comprehensive research on population biology, maintaining a balance between having healthy natural stocks and the socio-economic benefit of fisheries is difficult. Therefore, we studied some aspects of the biology of Gerres longirostris based on 474 specimens collected from the Red Sea (Jeddah coast, Saudi Arabia). The overall sex ratio of males to females was found to be 1:1.52, which was significantly different from the expected ratio of 1:1 (p < 0.05). Histological analysis of ovaries and testes and monthly variations in GSI values for G. longirostris indicated that spawning occurs between March and June, with a peak in GSI in May, and the trend was similar for both sexes. Size at 50% sexual maturity was estimated at 19.8 cm for females and 20.2 cm for males. The maximum batch and relative fecundity were estimated at 315,210 ova, 10,832 ova/cm, and 1068 ova/g, respectively. Batch fecundity and relative batch fecundity were significant correlated with total length (TL, cm) and body weight (BW, g) at p < 0.05. Histological examination of gonads revealed that their maturation in this species is asynchronous, with different developmental stages of oocytes at the same time, which indicates that the species is a multiple-batch spawner with indeterminate fecundity. |
| format | Article |
| id | doaj-art-1089cf3634ed472f9b1970e7d971919b |
| institution | Kabale University |
| issn | 1897-3191 |
| language | English |
| publishDate | 2024-06-01 |
| publisher | Sciendo |
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| series | Oceanological and Hydrobiological Studies |
| spelling | doaj-art-1089cf3634ed472f9b1970e7d971919b2025-01-20T11:10:24ZengSciendoOceanological and Hydrobiological Studies1897-31912024-06-0153216417610.26881/oahs-2024.2.07Reproductive features of Gerres longirostris Lacepède, 1801 (Perciformes: Gerreidae) off the Red Sea coast of Jeddah, Saudi ArabiaGabr Mohamed Hosny0Al-Harbi Mamdoh Ali1Sumon Md Afsar Ahmed2Marine Biology Department, Faculty of Marine Science, King Abdulaziz University, P.O. Box 80207, Jeddah> 21589 Saudi ArabiaMarine Biology Department, Faculty of Marine Science, King Abdulaziz University, P.O. Box 80207, Jeddah> 21589 Saudi ArabiaMarine Biology Department, Faculty of Marine Science, King Abdulaziz University, P.O. Box 80207, Jeddah> 21589 Saudi ArabiaSustainable management and conservation strategies are crucial for any species of Gerreidae. Without comprehensive research on population biology, maintaining a balance between having healthy natural stocks and the socio-economic benefit of fisheries is difficult. Therefore, we studied some aspects of the biology of Gerres longirostris based on 474 specimens collected from the Red Sea (Jeddah coast, Saudi Arabia). The overall sex ratio of males to females was found to be 1:1.52, which was significantly different from the expected ratio of 1:1 (p < 0.05). Histological analysis of ovaries and testes and monthly variations in GSI values for G. longirostris indicated that spawning occurs between March and June, with a peak in GSI in May, and the trend was similar for both sexes. Size at 50% sexual maturity was estimated at 19.8 cm for females and 20.2 cm for males. The maximum batch and relative fecundity were estimated at 315,210 ova, 10,832 ova/cm, and 1068 ova/g, respectively. Batch fecundity and relative batch fecundity were significant correlated with total length (TL, cm) and body weight (BW, g) at p < 0.05. Histological examination of gonads revealed that their maturation in this species is asynchronous, with different developmental stages of oocytes at the same time, which indicates that the species is a multiple-batch spawner with indeterminate fecundity.https://doi.org/10.26881/oahs-2024.2.07gerres longirostrisgonadosomatic indexsize at first sexual maturityfecundityhistologyred sea |
| spellingShingle | Gabr Mohamed Hosny Al-Harbi Mamdoh Ali Sumon Md Afsar Ahmed Reproductive features of Gerres longirostris Lacepède, 1801 (Perciformes: Gerreidae) off the Red Sea coast of Jeddah, Saudi Arabia Oceanological and Hydrobiological Studies gerres longirostris gonadosomatic index size at first sexual maturity fecundity histology red sea |
| title | Reproductive features of Gerres longirostris Lacepède, 1801 (Perciformes: Gerreidae) off the Red Sea coast of Jeddah, Saudi Arabia |
| title_full | Reproductive features of Gerres longirostris Lacepède, 1801 (Perciformes: Gerreidae) off the Red Sea coast of Jeddah, Saudi Arabia |
| title_fullStr | Reproductive features of Gerres longirostris Lacepède, 1801 (Perciformes: Gerreidae) off the Red Sea coast of Jeddah, Saudi Arabia |
| title_full_unstemmed | Reproductive features of Gerres longirostris Lacepède, 1801 (Perciformes: Gerreidae) off the Red Sea coast of Jeddah, Saudi Arabia |
| title_short | Reproductive features of Gerres longirostris Lacepède, 1801 (Perciformes: Gerreidae) off the Red Sea coast of Jeddah, Saudi Arabia |
| title_sort | reproductive features of gerres longirostris lacepede 1801 perciformes gerreidae off the red sea coast of jeddah saudi arabia |
| topic | gerres longirostris gonadosomatic index size at first sexual maturity fecundity histology red sea |
| url | https://doi.org/10.26881/oahs-2024.2.07 |
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