![]() roll Any swordfish that are caught that are not large enough by established standards are _ thrown overboard Asian Carp may actually leap into boats because _ outboard motors frighten them The Placoderms are thought to have evolved from the _ ostracoderms In the 1970s Bighead and Silver Carp were introduced to the US to control _ Mollusks and Algae The Patagonian Toothfish is officially listed as endangered False The _ act of 1972 was enacted to protect dolphins from mortality due to fishing. 20 The Patagonian Toothfish is harvested using _ long lines According to SUSA about _ pounds of Swordfish are consumed by the US public each year 30 million The US government recently closed more than 132,000 square miles of the Atlantic to commercial swordfishing because these areas are _ Swordfish nursery areas In order for jaws to function properly an animal must be able to overcome _, pitch, and yaw. ![]() 2 Sharks are now commonly harvested for their _, which is said to function as a cancer preventative cartilage There are possibly _ species of bony fishes 22,000 The "Give Swordfish a Break" campaign was run by Sea Web and _ Natural Resources Defense Council Swordfish are harvested commercially using _ long lines The fishing technique used to catch Patagonian Toothfish is said to have resulted in the deaths of numerous _ sea birds The US imports about _ % of all legally harvested Patagonian Toothfish. 250 Large scale commercial fishing for Patagonian Toothfish began in the _ 1990s One problem with harvesting sharks commercially is that they are _ viviparous There are actually _ species of Patagonian Toothfish. ![]() The _ are chordates that are sessile as adults and/but have a free-swimming larva urochordata Scientists once thought (incorrectly) that Amphioxus was a larval _ that underwent paedomorphosis lamprey Fish that live in marine environments and ascend creeks and streams to breed are called _ anadromous _ use slime production as a defense mechanism hagfish TFM may be replaced in the future by _ baylucide Among the vertebrates a prominent notochord is found in adult members of the class _ agnatha Some species of _ are catadromous species eels All lampreys are parasitic False The parasitic sea lamprey is characterized by having _ an oral disk The _ were the first vertebrates ostracoderms Lampreys are chiefly catadromous False Typically, invertebrates use their gills for _ feeding When lampreys reached the upper Great Lakes the _ fishery collapsed Lake Trout There are about _ species of jawless vertebrates in the world today 70 All chordates have _ pharyngeal gill slits The phylum chordate is subdivided into _ subphyla 3 The Ostracoderms may have used the bone in their skin for _ a mineral reservoir All chordates have _ dorsal hollow nerve cord _ is the phylum of marine, acorn worms hemichordata When the Welland canal was deepened _ invaded Lake Erie lampreys Sea urchins belong to the phylum _ echinodermata To protect Lake Michigan from possible invasion by Asian carp, fishery managers _ put up an electrical barrier Pacific Ocean tuna were considered "Dolphin Safe" after _ criteria were established IATTC _ is the group that manages Atlantic Swordfish ICCAT The Patagonian Toothfish is managed by a group of 24 nations that make up the _ CCAMLR Swordfish USA (SUSA) claims there are roughly 17 million recreational fishers and _ commercial swordfish boats in the North Atlantic.
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