Ferocious hellgrammites! Everything you need to know about the larva of the Dobsonfly!
10:29
YouTubeNature at Your Door Frank Taylor
Ferocious hellgrammites! Everything you need to know about the larva of the Dobsonfly!
Hellgrammites are the aquatic stage of the Dobsonfly, one of the largest insects in North America. The larva prowl among rocks in streams and rivers searching for prey. They are the top invertebrate predator in streams. They live for two to three years in the stream and then crawl from the river, often in mass to pupate in the ground before ...
31.8K viewsJun 25, 2021
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Our biologists found this dobsonfly larva (just before its adult stage) in Little Barton Creek during biological sampling for the Environmental Integrity Index (EII). Watch its gills pulse as it gathers oxygen from the water. Dobsonflies are sensitive to environmental conditions so their presence is an indicator of good water quality. Learn more about the EII program that monitors the health of Austin’s creeks at https://tinyurl.com/yczcd8w4. | Austin Watershed Protection
Our biologists found this dobsonfly larva (just before its adult stage) in Little Barton Creek during biological sampling for the Environmental Integrity Index (EII). Watch its gills pulse as it gathers oxygen from the water. Dobsonflies are sensitive to environmental conditions so their presence is an indicator of good water quality. Learn more about the EII program that monitors the health of Austin’s creeks at https://tinyurl.com/yczcd8w4. | Austin Watershed Protection
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