@article{fdi:010010615,
  title = {{B}iologie de {C}olossoma macropomum ({T}eleostei : {S}errasalmidae) dans le bassin du {M}amor{\'e} ({A}mazonie bolivienne)},
  author = {{L}oubens, {G}{\'e}rard and {P}anfili, {J}acques},
  editor = {},
  language = {{FRE}},
  abstract = {{T}he biology of #{C}olossoma macropomum$ is studied in the {T}rinidad region ({M}amore {B}asin, {B}olivia) and the results are compared with those from other basins. {A}lmost unexploited in {B}olivia, #{C}. macropomum$ stocks are already in regression in central {A}mazonia. {I}t inhabits flood-plain and is indifferent to the two main water types, white waters originally from the {A}ndes and black waters formed in "pampas". {I}t is oustandingly resistant to hypoxia through the development of lower lip extensions often observed in numerous adults. {D}uring high waters, #{C}. macropomum$ are scattered into the flooded areas ; they gather together in the lakes when the water recedes and finally reach the {M}amore river. {A}t low water, they migrate upstream for reproduction which takes place in the last quarter of the year near the {S}ecur{\'e} riverbanks. {I}n the breeding season, males remain at the spawning places while, after spawning, females move to recently flooded areas. {T}he length at sexual maturity is 62 cm for females and 60 cm for males. {T}here is a clear condition cycle composed of rapid fattening during high waters followed by a long thinning down beginning at fall and lasting till the middle of next flood. {T}hese results on feeding agree with those obtained in central {A}mazonia : intense feeding period on fruits and seeds falling from the trees during high waters followed by a long fast, total for adults, partial for youngs. {T}his cycle is registered on otolith (asteriscus) sections by alternating broad opaque zones and hyaline rings well stained by toluidin blue. {T}hese marks were useful to age most fishes with a good accuracy and to study the growth. {T}he growth is fast and similar in both sexes until sexual maturity, which occurs between 7 and 10 years. {A}dult male growth is slightly slower than that of female ; the difference between the two average maximal lengths is only 2 cm (74 cm for females, 72 cm for males). #{C}olossoma macropomum$ can live a very long time, at least 40 years (maximum, 65 years). {G}rowth curve shows a pattern characteristic of inexploited stocks. ({D}'apr{\`e}s r{\'e}sum{\'e} d'auteur)},
  keywords = {{POISSON} {D}'{EAU} {DOUCE} ; {ECOLOGIE} ; {BIOTOPE} ; {ABONDANCE} ; {MIGRATION} ; {REPRODUCTION} ; {NUTRITION} {ANIMALE} ; {CROISSANCE} ; {DEVELOPPEMENT} ; {PISCICULTURE} ; {BOLIVIE} ; {AMAZONIE} ; {MAMORE} {REGION}},
  booktitle = {},
  journal = {{I}chthyological {E}xploration of {F}reshwaters},
  volume = {8},
  numero = {1},
  pages = {1--22},
  ISSN = {0936-9902},
  year = {1997},
  URL = {https://www.documentation.ird.fr/hor/fdi:010010615},
}