Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

Reproduction in South American population of pumpkinseed sunfish Lepomis gibbosus (Linnaeus) (Osteichthyes, Centrarchidae): a comparison with the European and North American populations.

Abstract

The reproductive biology of the introduced pumpkinseed sunfish Lepomis gibbosus in the Custódio's Dam, rio Doce high basin, state of Minas Gerais, Brazil was studied from February 2001 to March 2002 and compared with introduced and native populations. Reproduction occurred almost along the entire period of the study with a high frequency of fishes in the advanced ripening/mature and spawned/spent stages. Microscopic analyses indicated that pumpkinseed sunfish undergoes multiple spawning. The egg diameter of the Brazilian population is similar than the Spanish, Greek and American populations. The standard length at maturity and the gonadosomatic index of the introduced populations were smaller compared to the native ones. The spawning season of the Brazilian population was the longest among all the populations studied.