Spatial segregation and connectivity in young and adult stages of Megaleporinus obtusidens inferred from otolith elemental signatures: Implications for management

被引：16

作者：

Avigliano, Esteban ^{[1
]}

Pisonero, Jorge ^{[2
]}

Domanico, Alejandro ^{[3
,4
]}

Silva, Natalia ^{[5
]}

Sanchez, Sebastian ^{[5
]}

Vanina Volpedo, Alejandra ^{[1
]}

机构：

[1] UBA, CONICET, Inst Invest Prod Anim INPA, Fac Ciencias Vet, Av Chorroarin 280,C1427CWO, Buenos Aires, DF, Argentina

[2] Univ Oviedo, Fac Ciencias, Dept Fis, Calvo Sotelo S-N, Oviedo 33007, Spain

[3] Minist Agroind, Lab Direcc Pesca Continental Subsecretaria Pesca, Alferez Pareja 125,C1107BJD, Buenos Aires, DF, Argentina

[4] CIC, Calle 526 S-N, RA-1900 Buenos Aires, DF, Argentina

[5] Univ Nacl Nordeste, Fac Ciencias Vet, Inst Ictiol Nordeste, CONICET, Sargento Cabral 2139, RA-3400 Corrientes, Argentina

来源：

FISHERIES RESEARCH | 2018年 / 204卷

关键词：

Lapillal otolith; LA-IPCMS; Microchemistry; Migration; Stock; SILVERSIDE ODONTESTHES-BONARIENSIS; FISH OTOLITHS; TRACE-ELEMENTS; FRESH-WATER; CHEMISTRY; STRONTIUM; TEMPERATURE; SALINITY; MICROCHEMISTRY;

D O I：

10.1016/j.fishres.2018.03.007

中图分类号：

S9 [水产、渔业];

学科分类号：

0908 ;

摘要：

Boga Megaleporinus obtusidens is a teleost fish of economical and sport importance from Rio de la Plata Basin (South America). Otolith core and edge elemental ratios (Ba:Ca, Cu:Ca, Li:Ca, Mg:Ca, Mn:Ca, Pb:Ca, Rb:Ca and Sr:Ca) were compared among three sampling areas from the Rio de la Plata Basin (Parana and Uruguay Rivers and Rio de la Plata Estuary) to evaluate the applicability of the fingerprint to study segregation and connectivity in young and adult stages. Several ratios were significantly different among sites for otolith core and edge (p < 0.05). PERMANOVA (p < 0.05) and quadratic discriminant function analysis (classification rates: 86.8% and 82.5% for otolith core and edge, respectively) were found to be highly effective in detecting differences in otolith core and edge fingerprints between sampling sites suggesting the existence of spatial segregation in young and adult life stages, respectively. The presence of relatively isolated groups may require the need to manage the stocks separately.

引用

页码：239 / 244

页数：6

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