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Growth trades off with habitat specialization | JoVE Visualize

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Growth trades off with habitat specialization

M Julian Caley¹, Philip L Munday

¹Australian Institute of Marine Science, PMB no. 3, Townsville MC, QLD 4810, Australia. j.caley@aims.gov.au

Proceedings. Biological Sciences|December 12, 2003

View abstract on PubMed

Summary

Specialists outperform generalists in specific environments, but generalists show consistent performance across diverse habitats. These findings empirically support the

Area of Science:

Ecology
Evolutionary Biology
Marine Biology

Background:

Niche breadth evolution and maintenance are poorly understood.
The 'jack of all trades is master of none' model suggests performance trade-offs with specialization.
Empirical evidence for this model has been lacking.

Purpose of the Study:

To empirically test the 'jack of all trades is master of none' model.
To investigate performance trade-offs in coral goby species.
To understand factors influencing niche breadth evolution.

Main Methods:

Studied four coral goby species in their natural habitat.
Assessed growth rates in different habitats.
Compared performance of specialists versus generalists.

Main Results:

Habitat specialists exhibited faster growth in one of two studied habitats.
Generalists showed lower average growth rates than specialists.
Generalists demonstrated more consistent growth rates across habitats.

Conclusions:

Empirical evidence supports performance trade-offs associated with resource specialization.
These trade-offs may drive the evolution and maintenance of narrow niche breadths.
Coral goby species display varying ecological strategies related to niche breadth.

Other Engineering

Agricultural Engineering

Growth Trades Off With Habitat Specialization