Occurrence of four-spined juvenile Gasterosteus aculeatus in an isolated Croatian river population

Autor: Zanella, Linda Natasha, Zanella, Davor, Mrakovčić, Milorad, Miletić, Marin, Mustafić, Perica, Ćaleta, Marko, Marčić, Zoran
Jazyk: angličtina
Rok vydání: 1999
Předmět:
Popis: 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.
Databáze: OpenAIRE