What question did this study set out to answer?

To determine the functional mechanics of particle capture, energetic demands, and evolutionary trade-offs in feeding echinoderm larvae.

August 1, 1975American Zoologist

Larval Feeding in Echinoderms

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Authors

RSRichard R. StrathmannLuxel (United States)

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Implication

Theoretical and comparative analysis reveals ciliated band mechanics dictate feeding capacity in echinoderm larvae, suggesting evolutionary loss of larval feeding is irreversible.

Key Points

To determine the functional mechanics of particle capture, energetic demands, and evolutionary trade-offs in feeding echinoderm larvae.
Synthesized comparative functional observations of particle capture across four distinct feeding echinoderm larval forms.
Calculated theoretical minimum nutritional requirements and embryonic amino acid uptake rates in early echinoplutei.
Analyzed the hydrodynamic and neural mechanisms governing particle retention, rejection behaviors, and egg-size life-history evolution.
Particle retention occurs upstream of the ciliated band across all four larval types, driven primarily by localized reversals in ciliary beat.
Elongation of the ciliated band is the sole physical mechanism for increasing water clearance rates, explaining the evolution of complex looping bands and delayed adult metamorphosis.
Evolutionary transitions involving the loss of the planktotrophic feeding larval stage are characterized as generally irreversible.

Cite This Study

Richard R. Strathmann (1975) studied this question.

synapsesocial.com/papers/6a7dc0d04776ec633518743f https://doi.org/10.1093/icb/15.3.717

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Implication

Theoretical and comparative analysis reveals ciliated band mechanics dictate feeding capacity in echinoderm larvae, suggesting evolutionary loss of larval feeding is irreversible.

Larval Feeding in Echinoderms

Discussion

Member takes

Implication

Key Points

Cite This Study

Larval Feeding in Echinoderms

Discussion

Member takes

Implication

Key Points

Cite This Study

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