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Biological dataset for Pagrus pagrus fished along Southern Brazil
Citation
Haimovici Manuel, Kikuchi Eidi, Cardoso Luis Gustavo, Morales Rubens (2020). Biological dataset for Pagrus pagrus fished along Southern Brazil. SEANOE. https://doi.org/10.17882/75444
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Availability: Creative Commons License This dataset is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.

Description
The data were obtained from a regular sampling program of industrial fisheries landings in Rio Grande, southern Brazil. The dataset presented is composed of: Fishing gear with landing date, minimum and maximum depth of the catches in ech fishing trip.. Individual fish parameters of length, total weight, total, sex, age, maturity stage, gonad weight, gonadosomatic indices and allometric condition factor. Type of the scales border and classification of the readability of the growth rings. more

During dock sampling, total length (TL), measured from the tip of the snout to the midpoint of the upper and lower limbs of the caudal fin, was recorded in mm, total weght. (TW) in grams, and sexed: (1) male, (2) female, (3) undetermined and (4) hermaphrodite. Specimens were classified from macroscopic examination as hermaphrodites when both testicular and ovarian tissues were present in the gonads and as males or females when all or most of the tissue was testicular or ovarian, respectively. Maturity stages were determined macroscopically with a seven-point scale: (1) virginal immature, (2) developing virginal, (3) developing, (4) advanced development, (5) running, (6) partly spent and (7) recovering. Gonads were weighted in grams (GW) and the average gonadosomatic indices were calculated as GSI = 100(GW/TW) . Allometric condition factors (K) were calculated as K = TW/TLb, where b is the coefficient of the weight-length relationship. For age determination, scales collected from behind the pectoral fin insertion. The readability of growth rings on the scales were classified as "well-marked", "faint or absent" and "unreadable". The position of the last ring relative to the posterior border of the scales were classified a (1) recently formed near the border, or (2) more distant of the border.

Scope
Themes:
Biology > Fish
Keywords:
Marine, Brazil, Rio Grande do Sul, Pagrus pagrus (Linnaeus, 1758)

Geographical coverage
Brazil, Rio Grande do Sul

Temporal coverage
1976 - 1985

Taxonomic coverage
Pagrus pagrus (Linnaeus, 1758) [WoRMS]

Contributors
Federal University of Rio Grande; Instituto de Oceanografia; Laboratório de Recursos Pesqueiros Demersaisdata creator

Related datasets
Published in:
EurOBIS: European Ocean Biodiversity Information System, more

Publication
Describing this dataset
Haimovici, M. et al. (2020). The population dynamics of the red porgy Pagrus pagrus along southern Brazil, before its fishery collapse in the 1980s: a baseline study. Aquat. Living Resour. 33: 10. https://hdl.handle.net/10.1051/alr/2020010

Dataset status: Completed
Data type: Data
Data origin: Monitoring
Metadatarecord created: 2020-10-12
Information last updated: 2020-11-04
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