caa a22 4500 60622825X CHVBK 20210128101202.0 cr unu---uuuuu 210128e20150201xx s 000 0 eng 10.1007/s10641-014-0285-0 doi (NATIONALLICENCE)springer-10.1007/s10641-014-0285-0 Reproductive tactics of the freshwater fish Brycon guatemalensis (Teleostei: characidae) in the lake Nicaragua [Elektronische Daten] [Aldo Hernández-Portocarrero, Rosario Domínguez-Petit, Fran Soborido-Rey] The Machaca Brycon guatemalensis is a tropical freshwater fish widely distributed in Central America continental water, and recognized to have potentiality for further fisheries development and recreational fishing opportunities in the Lake Nicaragua. The species presents a protracted spawning season that last 8months. Both small and large females start spawning activity in July, but this is females size-dependent. The female length at 50% maturity based on histological procedures was 27.3cm, which differs from the ones previously reported based on the gonad macroscopic observations (34.9cm). The present study indicates that B. guatemalensis has determinate fecundity and group-synchronous type ovarian organization. The studies of the potential annual fecundity of the species show that this allometrically increases above three with female size, indicating that larger females produce more eggs than predicted by weight. These results can be incorporated in the current fishery management to promote sustainability. Springer Science+Business Media Dordrecht, 2014 Machaca nationallicence Reproductive cycle nationallicence Spawning fraction nationallicence Somatic indices nationallicence Reproductive potential nationallicence Hernández-Portocarrero Aldo Instituto de Investigaciones Marinas (IIM-CSIC), C/Eduardo Cabello 6, 36208, Vigo, Pontevedra, Spain aut Domínguez-Petit Rosario Instituto de Investigaciones Marinas (IIM-CSIC), C/Eduardo Cabello 6, 36208, Vigo, Pontevedra, Spain aut Soborido-Rey Fran Instituto de Investigaciones Marinas (IIM-CSIC), C/Eduardo Cabello 6, 36208, Vigo, Pontevedra, Spain aut Environmental Biology of Fishes Springer Netherlands 98/2(2015-02-01), 535-546 0378-1909 98:2<535 2015 98 10641 https://doi.org/10.1007/s10641-014-0285-0 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10641-014-0285-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Hernández-Portocarrero Aldo Instituto de Investigaciones Marinas (IIM-CSIC), C/Eduardo Cabello 6, 36208, Vigo, Pontevedra, Spain aut NATIONALLICENCE 700 1- Domínguez-Petit Rosario Instituto de Investigaciones Marinas (IIM-CSIC), C/Eduardo Cabello 6, 36208, Vigo, Pontevedra, Spain aut NATIONALLICENCE 700 1- Soborido-Rey Fran Instituto de Investigaciones Marinas (IIM-CSIC), C/Eduardo Cabello 6, 36208, Vigo, Pontevedra, Spain aut NATIONALLICENCE 773 0- Environmental Biology of Fishes Springer Netherlands 98/2(2015-02-01), 535-546 0378-1909 98:2<535 2015 98 10641