PREDATOR ENVIRONMENT DOES NOT PREDICT LIFE HISTORY IN THE MORPHOLOGICALLY CONSTRAINED FISH ALFARO CULTRATUS (CYPRINODONTIFORMES: POECILIIDAE)

Predator Environment Does Not Predict Life History in the Morphologically Constrained Fish Alfaro cultratus (Cyprinodontiformes: Poeciliidae)

Predation is known to have a significant effect on life history diversification in a variety of species.However, physical constraints of body shape and size can sometimes limit life history divergence.We test this idea in the Costa Rican livebearing fish Alfaro cultratus.Individuals in this species have a narrow body and keeled ventral surface, and

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Identifying Effective Rock-Breaking Ratio Based on Rock Chip Information for Rock-Breaking Efficiency Evaluation of TBM

The rock chip information (shape, size, and particle size distribution) Push Button Switch could comprehensively reflect the characteristics of rock mass and rock-breaking efficiency of TBM.This study is aimed at defining a novel index (effective rock-breaking ratio, Pr) to identify the rock-breaking efficiency of TBM based on the rock chip informa

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