Parental investment of a biparental cichlid fish, Cichlasoma nigrofasciatum, in relation to brood size and past investment

1990 ◽  
Vol 40 (6) ◽  
pp. 1128-1137 ◽  
Author(s):  
Robert J. Lavery ◽  
Miles H.A. Keenleyside
Ethology ◽  
2010 ◽  
Vol 71 (3) ◽  
pp. 187-200 ◽  
Author(s):  
Gabriele Siepen ◽  
M.-Dominique Crapon de Caprona

Behaviour ◽  
1992 ◽  
Vol 120 (1-2) ◽  
pp. 123-138 ◽  
Author(s):  
Robert W. Rangeley ◽  
JEAN-GUY J. Godin

AbstractParental convict cichlids, Cichlasoma nigrofasciatum, responded to the presence of a potential brood predator by decreasing net energy gains (food intake decreased and energy expenditure increased) while increasing parental effort (large allocation of time to brood defense). These behaviours are important factors in the life-history trade-off between current and future reproductive investments. The allocation of energy into defense behaviours and elevated activity levels, combined with a voluntary reduction of food consumption, represent an investment in the current brood which could (in nature) reduce future reproduction. Contrary to parental investment theory predictions, consistent increases in parental effort with brood age were not evident.


2017 ◽  
Vol 247 ◽  
pp. 97-106 ◽  
Author(s):  
Maren N. Vitousek ◽  
Brittany R. Jenkins ◽  
Joanna K. Hubbard ◽  
Sara A. Kaiser ◽  
Rebecca J. Safran

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