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a.1.Having, or affording, no reward.
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
Looking after the cattle a major part of their work in life became almost rewardless. The matter becomes all the more serious under the scarcity situation of pulses and their high prices.
The potential vector stops visiting the "rewardless" (sensu Smithson, 2002) flowers after a few unsatisfying/stressful visits.
Such "mistakes" are suggested to account for the relatively high visitation to rewardless species when they grow in close association with highly rewarding species, the so-called "magnet effect" (Laverty and Plowright 1988, Laverty 1992, Dafni 1993).
We used two colors of artificial flowers (blue and purple) to represent a flower species polymorphic for corolla color that either offered rewards to pollinators or was rewardless, and thus deceptive.