Summary
A model was made to clarify the basic processes of competition to occur among larvae by the exploitation as defined byBakker (1969). It was found that this model is applicable to the experimental results on the food exploitation amongDroshophila larvae obtained byBakker (1961). In the model the preimaginal stage is divided into two periods;T f which is the time that a group of larvae spends in exhausting the food after hatching, andT s which is the duration of the starvation period afterT f .T f and thenW l (larval body weight) just after the end ofT f are decided byF s (amount of food supplied per larva at larval hatching) andF c (amount of food consumed per larva).T f affects on the onset ofT s as well asR l (rate of decrease in the individual body weight duringT s ).W a (weight of emerging adults) is gotten by a subtraction ofR l fromW l just after the end ofT f ,R e is affected directly by these components ofW l andR l . As a result,W a andR e are expressed by functions ofF s . This model confirmed that the food exploitation lead to the competition of scramble type. Finally it was suggested that there exist some strategies which prevent ill-effects owing to the food exploitation.
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Murai, M. Theoretical studies on the role of food exploitation for the competition of scaamble type. Res Popul Ecol 16, 289–308 (1975). https://doi.org/10.1007/BF02511068
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DOI: https://doi.org/10.1007/BF02511068