{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,9,29]],"date-time":"2025-09-29T12:03:16Z","timestamp":1759147396672},"reference-count":22,"publisher":"FapUNIFESP (SciELO)","issue":"2","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Braz. arch. biol. technol."],"published-print":{"date-parts":[[2000]]},"abstract":"<jats:p>Euvola ziczac (formerly Pecten ziczac), a simultaneous hermaphroditic scallop was heavily fished in Brazil between 1972 and 1980. The production peaked in 1980 with 8,800 tons and was followed by the total collapse of the resource. In order to investigate the possible loss of genetic variability of the stock associated to overfishing and self-fertilization, the polymorphism of phosphoglucomutase (PGM) and glucose phosphate isomerase (GPI) was analyzed by electrophoresis of the adductor muscle of scallops from S\u00e3o Francisco (26\u00b0 20.583\u2019S; 48\u00b0 16.507\u2019W) and Bom Abrigo (25\u00b0 28.735\u2019S; 47\u00b0 37.621\u2019W) beds; the southern and northern extremes of the scallop fishing ground, respectively. Animals from S\u00e3o Francisco showed a strong deficiency of heterozygosity for GPI and PGM. In addition, PGM showed *exclusive alleles for each bed. Such results coupled with other information about the species suggested the following hypothesis: a) the stock was a metapopulation with at least two populations; b) some reproductive isolation might be occurring which might be influenced by conditions of larval transport and by the extremely low densities of scallops; c) presently, the stock seemed to be mostly maintained through self-fertilization; d) S\u00e3o Francisco could constitute a source-area, contributing with larvae and recruits to Bom Abrigo and other areas; e) both beds were suffering a genetic homogenization more evident in S\u00e3o Francisco. Such hypothesis needed to be investigated in order to furnish guidelines for future programs of recovery and management of the resource.<\/jats:p>","DOI":"10.1590\/s1516-89132000000200014","type":"journal-article","created":{"date-parts":[[2007,3,26]],"date-time":"2007-03-26T19:05:18Z","timestamp":1174935918000},"page":"235-240","source":"Crossref","is-referenced-by-count":5,"title":["Preliminary analysis of the genetic variability of two natural beds of the Scallop Euvola ziczac (Linnaeus, 1758) in Brazil"],"prefix":"10.1590","volume":"43","author":[{"given":"Mercedes Gonzalez","family":"Wang\u00fcemert","sequence":"first","affiliation":[{"name":"Universidad de Murcia"}]},{"given":"Paulo Ricardo","family":"Pezzuto","sequence":"additional","affiliation":[{"name":"Universidade do Vale do Itaja\u00ed, Brazil"}]},{"given":"Carlos Alberto","family":"Borzone","sequence":"additional","affiliation":[{"name":"Universidade Federal do Paran\u00e1, Brazil"}]}],"member":"530","reference":[{"key":"ref1","doi-asserted-by":"crossref","first-page":"285","DOI":"10.1007\/BF00393030","article-title":"Effects of self-fertilization and other factors on the early development on the scallop Pecten maximus","volume":"76","author":"Beaumont A. R.","year":"1983","journal-title":"Mar. Biol."},{"issue":"1","key":"ref2","first-page":"69","article-title":"Efectos de la consanguinidad en la vieira Euvola ziczac (L)","volume":"34","author":"Betancourt R. J.","year":"1995","journal-title":"Bol. Inst. Oceanogr"},{"key":"ref3","first-page":"67","article-title":"Relat\u00f3rio t\u00e9cnico dos cruzeiros do Projeto Vieira: I. Cruzeiro I (4 a 9 de dezembro de 1995)","volume":"1","author":"Borzone C. A.","year":"1997","journal-title":"Notas Tec. FACIMAR"},{"issue":"2","key":"ref4","doi-asserted-by":"crossref","first-page":"131","DOI":"10.1046\/j.1439-0485.1999.00070.x","article-title":"Oceanographic characteristics of a multi-specific fishing ground of the central south Brazil bight","volume":"20","author":"Borzone C. 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FACIMAR."},{"key":"ref17","series-title":"Seashells of Brazil","author":"Rios E.","year":"1994","edition":"2nd"},{"key":"ref18","series-title":"Cultivo de Moluscos en America Latina","first-page":"345","volume-title":"El cultivo de moluscos en Venezuela","author":"Rojas A. V.","year":"1990"},{"issue":"3","key":"ref19","first-page":"1","article-title":"An outline of techniques for starch gel electrophoresis of enzymes from the American oysters, Crassostrea virginica Gmelin","volume":"74","author":"Schaal B. A","year":"1974","journal-title":"Tech. Rep. Ser. Gamar. Sci. Cent. Savannah A"},{"key":"ref20","first-page":"599","article-title":"Phenotypes of phosphoglucose isomerase in some bivalve molluscs","volume":"988","author":"Wilkins N. P","year":"1979","journal-title":"Comp. Biochem. 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