caa a22 4500 47711637X CHVBK 20180405111623.0 cr unu---uuuuu 170330e19960201xx s 000 0 eng 10.1007/BF00005230 doi (NATIONALLICENCE)springer-10.1007/BF00005230 Reproduction in the piranha Serrasalmus spilopleura , a neotropical fish with an unusual pattern of sexual maturity [Elektronische Daten] [Ivana Lamas, Alexandre Godinho] Synopsis: Reproduction in female Serrasalmus spilopleura (Characiformes, Characidae) from the Itumbiara reservoir (18°28′ S, 48°36′ W), Paranaíba River, Brazil, was examined with emphasis on the relationship between condition factors and coelomic fat, the annual reproductive cycle and the unusual dynamics of its sexual maturity. The condition factor and coelomic fat index follow a similar pattern along the stages of reproductive cycle. Variations in the condition factor along the reproductive cycle were assigned to variations in the fat contents of the carcass. Serrasalmus spilopleura exhibits characteristics of partial spawning fish and reproduces throughout the year. Sexual maturity occurs at 17.8 cm standard length. Resting and totally spent females were not captured. Females cycle from partially spent to intermediate/advanced maturation without going into the totally spent or resting stages. The initial maturation stage is restricted to fish of intermediate size. Once the initial maturation stage has started the fish remains there for a considerable period of its lifetime before entering in the intermediate maturation stage, an uncommon sexual maturity pattern. The long duration of the initial maturation stage was responsible for the females not returning to the resting stage after spawning. Kluwer Academic Publishers, 1996 Reproductive cycle nationallicence Spawning nationallicence Maturation dynamics nationallicence Characidae nationallicence Lamas Ivana Department of Zoology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, 31270-901, MG, Brazil aut Godinho Alexandre Department of Zoology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, 31270-901, MG, Brazil aut Environmental Biology of Fishes Kluwer Academic Publishers 45/2(1996-02-01), 161-168 0378-1909 45:2<161 1996 45 10641 https://doi.org/10.1007/BF00005230 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00005230 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Lamas Ivana Department of Zoology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, 31270-901, MG, Brazil aut NATIONALLICENCE 700 1- Godinho Alexandre Department of Zoology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, 31270-901, MG, Brazil aut NATIONALLICENCE 773 0- Environmental Biology of Fishes Kluwer Academic Publishers 45/2(1996-02-01), 161-168 0378-1909 45:2<161 1996 45 10641 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer