Length-weight relationships of 107 osseous and 9 cartilaginous fish species on a shelf-break zone of the eastern Mediterranean Sea

被引:1
|
作者
Mutlu, Erhan [1 ]
Miglietta, Claudia [2 ]
de Meo, Ilaria [3 ]
Deval, Mehmet Cengiz [1 ]
机构
[1] Akdeniz Univ, Fisheries Fac, Main Campus, Antalya, Turkey
[2] Via Andrea Doria 38, I-72020 Ceffino San Marco, Br, Italy
[3] Inland Norway Univ Appl Sci, Fac Appl Ecol Agr Sci & Biotechnol, Campus Evenstad, Elverum, Norway
来源
CAHIERS DE BIOLOGIE MARINE | 2022年 / 63卷 / 01期
关键词
Osseous and cartilaginous fish; Length-weight; Spatio-temporal; Eastern Mediterranean Sea; CENTRAL AEGEAN SEA; ISKENDERUN BAY; ANTALYA BAY; BLACK-SEA; COAST; GULF; TETRAODONTIDAE; INVERTEBRATES; CAUGHT;
D O I
10.21411/CBM.A.DEBDACF1
中图分类号
Q17 [水生生物学];
学科分类号
071004 ;
摘要
Overall and spatiotemporal total length-weight relationships (LWR) were studied for the 116 fish composing of 107 osseous and 9 cartilaginous fish species collected by otter trawl in the shelf and upper slope of Gulf of Antalya in 2014-2015. Of the 89 abundant bony species, 38 species had isometric growth, 24 species positive allometry, and 27 species negative allometry. Growth type was significantly affected with the sample size. LWRs of osseous fish species which had their body condition factor CF <= 1 were significantly differentiated by factors region, season and depth, but none was for the fish having CF >= 1. The factorial differences were found in relation with the CF. The b values for the osseous fish decreased slightly with bottom depth from lower shelf to middle shelf. The highest b values occurred for the ubiquitous fish on the entire shelf while the a values increased. At greater depths, the b values shifted the allometry from the isometry to the negative allometry. Average b value of osseous fish was 2.962 +/- 0.048 (isometric), and median was 2.992. LWRs of body width-weight of batoid fish showed a b value <= 3. Sexual dimorphism in the LWR occurred for 10 species.
引用
收藏
页码:19 / 27
页数:9
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