ABSTRACT The Madeira River, which drains one of the major tributary river basins of the
upper Amazon, contributes to small-scale fisheries in Peru, Bolivia, and Brazil. This paper …

The literature presents a confusing number of macroscopic maturation scales for fish
gonads, varying from over-simplified scales comprising three to four stages to highly specific …

Individuals living in rural communities in tropical forests rely heavily on subsistence
extraction of resources, and usually have strong ties to their local environment. In the …

Identifying fish spawning areas is of great ecological and conservation importance as fishes
are suffering increasing threat levels from anthropogenic activities. However, to date very …

Gaining a comprehensive understanding of all factors influencing fish reproduction in large
rivers is vital for proposing improved river discharge management practices and estimating …

The main life‐history traits of the dorado Brachyplatystoma rousseauxii, a large Amazonian
catfish undertaking the largest migration known for a freshwater fish species (from the …

Abstract cDNAs encoding the appetite regulating peptides apelin, cocaine and
amphetamine regulated transcript (CART), cholecystokinin (CCK), peptide YY (PYY) and …

Abstract cDNAs encoding the appetite regulating peptides leptin and ghrelin were isolated
in red-bellied piranha (Characiforme, Serrasalmidae) and their mRNA tissue and brain …

In the absence of constraints, preference for larger mates is expected to evolve, as larger
individuals are typical of higher potential fitness. Large females are often more fecund and …

The main life history traits of the large Amazonian migratory catfish Brachyplatystoma
rousseauxii were determined in the Caqueta River, Colombia. The breeding season …