The Biology and Culture of Tilapias
bution of T. busumana, T. discolor and S. multifasciatus in Lake Bosumtwi and in the permanent and intermittent rivers flowing i ...
After their liberation by the female, the alevins of many mouthbrooding tilapias remain in schools until a stage of development ...
but certain individuals make much longer journeys (maximum: 100 km in 30 days). Tags carried by S. mossambicus juveniles in Lake ...
duction (leading to overpopulation of ponds and dwarfing) in the species transferred from highlands where the reproduction is se ...
and rivers of the island of Mauritius (George 1976). Also in Lake Kin- kony in Madagascar, T. rendalli, accidentally introduced ...
Conclusions Tilapias constitute a diversified and plastic group of great interest to ecologists. But until now most studies have ...
Acknowledgments Dr. D. Pauly of ICLARM and Dr. R. Lowe-McConnell translated our French manuscript and revised the final version ...
Life Histories of Tilapias: An Evolutionary Perspective D. L. G. NOAKES AND E. K. BALON Department of Zoology College of Biologi ...
believe that mouthbrooding likely evolved several times among the tilapias as an adaptation to stable and competitive conditions ...
1978). These terms refer to the parameters of the widely-used logistic growth curve for populations, where "r" is the slope (gro ...
The proposal (Balon 1975a) to define the ontogeny of fishes by uniform, objectively-recognized intervals in an hierarchical syst ...
question, instead of activation, insemination, or fertilization. Our system allows us to recognize the comparable intervals for ...
Overview of Tilapia Life Histories The question of reproductive guilds is an obvious one to apply to tilapias. Several authors h ...
related to growth and development, age at maturity, fecundity, parental care and longevity (Lowe-McConnell 1959; Berns et al. 19 ...
reproduction) are available for even fewer species, and information on longevity is sketchy at best. Ironically, behavioral data ...
nor suggest a possible explanation for the overwhelming incidence of mater- nal bearer species beyond the following comments, as ...
fluvial species invading a recently-inundated area (but see Philippart and Ruwet, this volume). The key point is the saltatory n ...
such ecological (rather than evolutionary) shifts in life history features. The bearing species have a relatively lower fecundit ...
This correspondence in life history features of the two groups of tilapias is not surprising, and at least some of these feature ...
earlier age of first reproduction will often dramatically increase "r" (Lewontin 1965; Green 1980). Thus earlier age of first re ...
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