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Distribution of whitemouth croaker Micropogonias furnieri in relation to environmental factors at the Río de la Plata estuary, South America

2003; Inter-Research; Volume: 255; Linguagem: Inglês

10.3354/meps255271

1616-1599

Andrés J. Jaureguizar, J Bava, CR Carozza, CA Lasta,

Fish Biology and Ecology Studies

MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout the JournalEditorsTheme Sections MEPS 255:271-282 (2003) - doi:10.3354/meps255271 Distribution of whitemouth croaker Micropogonias furnieri in relation to environmental factors at the Río de la Plata estuary, South America Andres J. Jaureguizar1,2,*, Jose Bava1,3, Claudia R. Carozza2, Carlos A. Lasta2 1CONICET ‹ Consejo Nacional de Investigaciones Científicas y Técnicas, Avda. Rivadavia 1917, 1033 Ciudad de Buenos Aires, Argentina 2INIDEP ‹ Instituto Nacional de Investigación y Desarrollo Pesquero, Paseo Victoria Ocampo 1, 7600 Mar del Plata, Argentina 3IAFE ‹ Instituto de Astronomia y Fisica del Espacio, Ciudad Universitaria, Pabellon IAFE, CC67 Suc. 28, 1428 Ciudad de Buenos Aires, Argentina *Email: ajj@inidep.edu.ar ABSTRACT: The age-class distribution of the whitemouth croaker Micropogonias furnieri and its relationship to environmental factors was evaluated from 278 stations sampled between 1993 and 1999 during early winter and spring within the Rio de la Plata estuary (36°S, 56°W). A detrended canonical correspondence analysis (DCCA) was used to define sampling station groups based on age structure of whitemouth croaker, and to estimate their association with depth, type of substrate, temperature and salinity of surface and bottom waters. Complementary information for surface temperature and location of the turbidity fronts was derived from NOAA-14-AVHRR imagery obtained in 1999. Results indicated that bottom salinity has a major influence on the spatial distribution pattern of M. furnieri, and that distinct preferences for different salinities by the various age-classes of this species result in a differential distribution pattern along the main axis of the estuary. In both seasons, turbidity fronts were located at the inner central area of the estuary and showed a close fit with the distribution of the youngest age-classes. KEY WORDS: Micropogonias furnieri · Age-classes · Environmental factors · Río de la Plata · Estuary Full text in pdf format PreviousNextExport citation RSS - Facebook - Tweet - linkedIn Cited by Published in MEPS Vol. 255. Online publication date: June 24, 2003 Print ISSN: 0171-8630; Online ISSN: 1616-1599 Copyright © 2003 Inter-Research.