White mulletMugil curemapopulation structure from Mexico and Brazil revealed by otolith chemistry

被引:22
作者
Avigliano, Esteban [1 ]
Ibanez, Ana [2 ]
Fabre, Nidia [3 ]
Callico Fortunato, Roberta [1 ]
Mendez, Ana [4 ]
Pisonero, Jorge [4 ]
Volpedo, Alejandra V. [1 ]
机构
[1] Univ Buenos Aires, Fac Ciencias Vet, CONICET, Inst Invest Prod Anim,INPA,UBA, Ave Chorroarin 280,C1427CWO, Buenos Aires, DF, Argentina
[2] Univ Autonoma Metropolitana, Dept Hidrobiol, Mexico City, DF, Mexico
[3] Univ Fed Alagoas, Setor Ecol Conservacao, Inst Ciencias Biol & Saude ICBS, Maceio, Alagoas, Brazil
[4] Univ Oviedo, Dept Phys, Oviedo, Spain
关键词
catadromous; fish stock; LA-ICP-MS; laser ablation; Mugilidae; otolith microchemistry; MIGRATORY ENVIRONMENTAL HISTORY; SILVERSIDE ODONTESTHES-BONARIENSIS; CEPHALUS LINNAEUS 1758; MUGIL-CEPHALUS; FRESH-WATER; FISH OTOLITH; STOCK IDENTIFICATION; LIFE-HISTORY; STRONTIUM/CALCIUM RATIOS; PHYSIOLOGICAL INFLUENCES;
D O I
10.1111/jfb.14500
中图分类号
S9 [水产、渔业];
学科分类号
0908 ;
摘要
The white mulletMugil curemasupports several fisheries in the neotropical region; nevertheless, the population structure is still elusive. The aim of this study was to assess the presence of adult management units and nursery areas from five sampling sites throughout the Gulf of Mexico and northern Brazil using otolith microchemistry. The Li/Ca, Na/Ca, Mn/Ca, Sr/Ca, Ba/Ca and Pb/Ca ratios were measured in otolith core (juvenile stage) and edge (adult stage) (N= 131) using laser ablation-inductively coupled plasma-mass spectrometry. Several ratios were significantly different between sampling sites for core and edge (P < 0.05). For otolith edge, permutational multivariate analysis of variance showed significant differences (P < 0.05) between all sampling sites from Mexico (except between Mecoacan and Tamiahua,P > 0.05) and between Mexico (pooled samples) and Brazil. Quadratic discriminant analyses showed jackknifed classification higher in the edge (66.6% and 99.5% for Mexico and Brazil plus Mexico, respectively) than in the core (46.3% and 76.5% Mexico and Brazil plus Mexico, respectively). The two cluster analyses based on the core microchemistry (Mexico and Brazil plus Mexico) produced three main clusters, which did not coincide with catchment areas. These results support the segregation of theM. curemaadult life stages among several sampling sites from Mexico and Brazil; moreover, core analysis suggested that the nursery areas did not correspond to the capture sites or adults stocks.
引用
收藏
页码:1187 / 1200
页数:14
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