Detalles MARC
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| fixed length control field |
02366nam a22003497a 4500 |
| 003 - CONTROL NUMBER IDENTIFIER |
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| control field |
IBMPAS |
| 005 - DATE AND TIME OF LATEST TRANSACTION |
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| control field |
20190328100123.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION |
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| fixed length control field |
141024b xxu||||| |||| 00| 0 spa d |
| 040 ## - CATALOGING SOURCE |
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| Transcribing agency |
01 |
| 041 ## - LANGUAGE CODE |
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| Language code of text/sound track or separate title |
eng |
| 100 ## - MAIN ENTRY--PERSONAL NAME |
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| Personal name |
Estalles, Marilú |
| 245 ## - TITLE STATEMENT |
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| Title |
Distribution and reproductive biology of the Electric ray Discopyge tschudii Heckel, 1846 in San Matías Gulf, Northern Patagonia, Argentina |
| Statement of responsibility, etc |
Marilú Estalles [et.al.] |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. (IMPRINT) |
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| Place of publication, distribution, etc |
[s.l.] |
| Name of publisher, distributor, etc |
Neotropical Ichthyology |
| Date of publication, distribution, etc |
2011 |
| 300 ## - PHYSICAL DESCRIPTION |
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| Extent |
pp. 831-838 |
| 362 ## - DATES OF PUBLICATION AND/OR SEQUENTIAL DESIGNATION |
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| Dates of publication and/or sequential designation |
Vol.9, nº4(2011) |
| 440 ## - SERIES STATEMENT/ADDED ENTRY--TITLE |
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| Name of part/section of a work |
Neotropical Ichthyology |
| 520 ## - SUMMARY, ETC. |
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| Summary, etc |
The Electric ray Discopyge tschudii is distributed in the Southwest Atlantic from southern Brazil to southern Argentina and in the Southeast Pacific from Peru to southern Chile. The main threat to this species is fishing. Discopyge tschudii is noncommercial and individuals caught are discarded on board. The present study analyzes the distribution and the morphological and reproductive characteristics of this ray in San Matías Gulf (SMG), Argentina. A total of 1087 individuals were analyzed. The species presented an aggregate distribution, with the main concentrations in the northern and eastern areas of SMG, at depths below 100 m. Males ranged from 9 to 43 cm and females from 11 to 38 cm. The species presented sexual dimorphism. Males were larger and heavier than females and also matured at larger sizes. Size at 50% of maturity was estimated at 30 cm for males and 21 cm for females. A total of 199 embryos were sampled and the proportion of sexes showed no significant differences from the expected 1:1. The number of embryos per female varied from 1 to 12. The most frequent values were 2 and 5. Length at birth was estimated at 82.17 ± 3.87 mm. Based on our findings, we hypothesize that the electric ray D. tschudii completes its reproductive cycle in SMG. |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name as entry element |
Apron ray |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name as entry element |
Narcinidae |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name as entry element |
Torpedinoidei |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name as entry element |
Torpediniformes |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name as entry element |
rayas |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name as entry element |
condrictios |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name as entry element |
Discopyge Tschudii |
| 651 ## - SUBJECT ADDED ENTRY--GEOGRAPHIC NAME |
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| Geographic name |
Southwest Atlantic |
| 651 ## - SUBJECT ADDED ENTRY--GEOGRAPHIC NAME |
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| Geographic name |
Golfo San Matías |
| 700 ## - ADDED ENTRY--PERSONAL NAME |
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| Personal name |
Coller, Nidia Marina |
| 9 (RLIN) |
1 |
| 700 ## - ADDED ENTRY--PERSONAL NAME |
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| Personal name |
Di Giácomo, Edgardo |
| 700 ## - ADDED ENTRY--PERSONAL NAME |
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| Personal name |
Perier, María Raquel |
| 856 ## - ELECTRONIC LOCATION AND ACCESS |
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| Uniform Resource Identifier |
<a href="http://www.scielo.br/scielo.php?pid=S1679-62252011000400014&script=sci_arttext">http://www.scielo.br/scielo.php?pid=S1679-62252011000400014&script=sci_arttext</a> |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) |
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| Source of classification or shelving scheme |
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| Koha item type |
Apartado de Revista |