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Embryo mortality relative to the abundance category of the water mold, Saprolegnia diclina, and an unidentified predatory flatworm (Turbellaria spp.) for egg masses of Anaxyrus canorus at various breeding sites near Tioga Pass, California, USA, in 2001

Dates

Publication Date
Start Date
2001-05-01
End Date
2001-05-31

Citation

Sadinski, W., 2020, Embryo mortality relative to the abundance category of the water mold, Saprolegnia diclina, and an unidentified predatory flatworm (Turbellaria spp.) for egg masses of Anaxyrus canorus at various breeding sites near Tioga Pass, California, USA, in 2001: U.S. Geological Survey data release, https://doi.org/10.5066/P9BVZDOP.

Summary

We produced this data set as part of a larger, integrated study to assess the statuses of populations of Anaxyrus canorus and the causes of observed effects on fitness at field sites, primarily in Yosemite National Park near Tioga Pass, from 1996 to 2001. To assess embryo mortality, we visually evaluated each individual embryo in an egg mass in situ while kneeling alongside it immediately before, at, or very soon after hatching (when individual capsules remained from hatched embryos and when any remnants of dead embryos typically still were visible). We did not assess mortality in any egg masses that had deteriorated too far to evaluate embryos. In 2001, a limited number of field personnel caused us to estimate the proportion dead [...]

Contacts

Originator :
Walter J Sadinski
Point of Contact :
Walter J Sadinski
Metadata Contact :
Walter J Sadinski
Distributor :
U.S. Geological Survey - ScienceBase

Attached Files

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Embryo mortality_mold_worms_2001.csv 2.16 KB

Purpose

We used these data to help us evaluate the effects of potential exposure to freezing, Saprolegnia diclina, and a predatory flatworm (Turbellaria spp.) on embryos of A. canorus in our study area. Other researchers could use them to address various ecological questions related to fitness, reproduction success, recruitment, and natural history, among other topics for A. canorus in our study area or elsewhere.

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Communities

  • Upper Midwest Environmental Sciences Center (UMESC)

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DOI https://www.sciencebase.gov/vocab/category/item/identifier doi:10.5066/P9BVZDOP

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