What question did this study set out to answer?

To establish a standardized methodology for measuring egg and stage I nauplius dimensions to evaluate morphological variation across cirripede taxa.

June 1, 1965Journal of Animal Ecology

Egg Size, Nauplius Size, and Their Variation with Local, Geographical, and Specific Factors in Some Common Cirripedes

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Authors

HBH. BarnesUniversity of Stirling MBMargaret BarnesMarine Scotland

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Implication

Observational study reveals standardized measurement techniques for egg and nauplius dimensions in cirripedes, highlighting methods to evaluate developmental variations.

Key Points

To establish a standardized methodology for measuring egg and stage I nauplius dimensions to evaluate morphological variation across cirripede taxa.
Eggs and ova were measured either fresh or after preservation in Gilson's fluid to dissociate egg lamellae, allowing ova to round off for 30 minutes prior to assessment.
Stage I nauplii were measured dorsally for total length and carapace width using a scaled eyepiece binocular microscope (1 division = 6.0 μm).
Pooled aliquots of at least 200 eggs obtained from multiple individuals were measured per batch under moderate optical magnification.
Moderate microscope magnification covering roughly 40 scale divisions minimized depth-of-focus errors encountered when viewing ellipsoid eggs at higher magnifications.
Gilson's fluid preservation coupled with gentle agitation successfully dissociated ripe egg lamellae into individual ova without inducing measurable structural distortion.

Cite This Study

Barnes et al. (1965) studied this question.

synapsesocial.com/papers/6a87de4ef762332bf8fe874f https://doi.org/10.2307/2656

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Implication

Observational study reveals standardized measurement techniques for egg and nauplius dimensions in cirripedes, highlighting methods to evaluate developmental variations.

Egg Size, Nauplius Size, and Their Variation with Local, Geographical, and Specific Factors in Some Common Cirripedes

Discussion

Member takes

Implication

Key Points

Cite This Study

Egg Size, Nauplius Size, and Their Variation with Local, Geographical, and Specific Factors in Some Common Cirripedes

Discussion

Member takes

Implication

Key Points

Cite This Study

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