The Blue Crab From Z to A A Problem-solving Study of the Blue Crab (from zoea larvae to adult)

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Presentation transcript:

The Blue Crab From Z to A A Problem-solving Study of the Blue Crab (from zoea larvae to adult)

A Classroom Lesson from the Mathematics & Science Center Photo: NOAA

Map: Chesapeake Bay Foundation

The Blue Crab: a KEYSTONE organism in the bay food web Photo: R. Hawley

In this lesson you will: Create a KNOWLEDGE MENU for the Blue Crab Learn about BIOTIC and ABIOTIC factors on the Blue Crab Stock Make a RECOMMENDATION to help improve the bay’s Crab stock

Callinectes sapidus Beautiful swimmer” (Greek) “Savory” (Latin) Photo: Steve Szinski

A pugnacious, benthic aquatic crustacean Photo: NOAA

Male “Jimmy” Crab Photo: R. Hawley

Female “Sook” Crab Photo: R. Hawley

Pregnant Female: “Sponge” Photo: R. Hawley

A Unique Life Cycle Graphic: NOAA

Growth by 1/3: Molting Photos: R. Hawley

Some Blue Crab History 1870’s Soft shell crab industry – Crisfield, MD 1896 Mary J. Rathbun The Genus Callinectes First Crab Pot – B.F. Lewis of Harryhogan, VA Photo: NOAA

More Blue Crab History 1967 Founding of the Chesapeake Bay Foundation 1982 EPA Report The Chesapeake Bay: Introduction to an Ecosystem 2000 Chesapeake Bay Commission Bi-State Blue Crab Advisory Committee Photo: NOAA

“Ain’t nobody really knows about crabs.” Anonymous waterman Photo: NOAA

How much is too much? Will the Blue Crab go the way of the Shad, the Oyster, and the Sturgeon? Photo: NOAA

“The Chesapeake fishery is perilously close to collapse.” William T. Goldsborough Director of Fisheries Program Chesapeake Bay Foundation Photo: NOAA

Graph:VA/MD Sea Grant

Blue Crab Today: 42 / 100 Graphic: Chesapeake Bay Foundation

The Bay’s Last Major Commercial Fishery Photo: NOAA

“If the blue crab goes, where are we?” Anson “Tuck” Hines Smithsonian Environmental Research Center Scientist Photo: NOAA

Your task today is to: Work in a team to complete your Knowledge Menu Develop recommendation to help the blue crab population Share your and support recommendation with the class Photo: VA/MD Sea Grant

Blue Crab Stations: I. Taxonomy II. Behavior III.Habitat & Environmental Data IV.Anatomy and Physiology V.Life Cycle VI.Growth VII. Predators VIII. Economics & Other Factors * 5 Questions at each station *

Knowledge Menu Graphic: N. Hamm

Good Luck and Happy Crabbing! Photo: NOAA

Graphics Courtesy of… Bi-State Blue Crab Advisory Committee Chesapeake Bay Foundation Maryland Sea Grant Smithsonian Environmental Research Center Virginia Institute of Marine Science Rhonda Hawley Martha Vogel Steve Szinski (Blue Crab Archives)

The End. Photo: NOAA