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Occurrence of four-spined Gasterosteus aculeatus in an isolated Croatian river population.
Zanella, L N; Zanella, D; Mrakovcic, M; Miletic, M; Mustafic, P; Caleta, M.
Affiliation
  • Zanella LN; Department of Zoology, Faculty of Science, University of Zagreb, Rooseveltov trg 6, 10000 Zagreb, Croatia. linda.zanella@zg.t-com.hr
J Fish Biol ; 75(8): 2052-61, 2009 Nov.
Article in En | MEDLINE | ID: mdl-20738671
ABSTRACT
An isolated population of the three-spined stickleback Gasterosteus aculeatus in Croatia was found to have a high incidence of specimens either having a fourth dorsal spine or showing remnants of a fourth spine. Juvenile individuals showed a 9.4% incidence of a fourth spine. The population was examined for asymmetry of the skeletal defensive complex in order to determine whether the additional spine could be the result of developmental instability, a response to predation or environmental conditions.
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Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: Smegmamorpha / Rivers Type of study: Diagnostic_studies Limits: Animals Country/Region as subject: Europa Language: En Journal: J Fish Biol Year: 2009 Document type: Article Affiliation country: Croatia
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Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: Smegmamorpha / Rivers Type of study: Diagnostic_studies Limits: Animals Country/Region as subject: Europa Language: En Journal: J Fish Biol Year: 2009 Document type: Article Affiliation country: Croatia