LESSON 2 - SeaTrek Programs

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Appendix A: Vocabulary Male Pair-bonded groups The strongest bond of all dolphin groups; a life-long bonding of male dolphins starting at sexual maturity. Lesson 3. Mammal Any of various warm-blooded vertebrate animals of the class Mammalia, including humans, characterized by a covering of hair on the skin and, in the female, milk-producing mammary glands for nourishing the young. Lesson 2. Mammalia A class of warm-blooded vertebrates characterized especially by the presence of mammary glands and hair. Lesson 2. Mammary glands Any of the milk-producing glands in female mammals, consisting of lobes containing clusters of alveoli with a system of ducts to convey the milk to an external nipple or teat. These glands typically occur in pairs and begin secreting milk when young are born. Lesson 2. Mammary slits The area of a female cetacean where the mammary glands are located; found on either side of the urogenital slit. Lesson 2. Mandible The lower jaw of an animal. Lesson 2. Marine Mammal Protection Act (MMPA) A law passed by the United States Congress in 1972 to establish a comprehensive program to manage and conserve marine mammals. Responsibility for implementation and enforcement was given to either the Department of Commerce or the Department of the Interior, depending on the species, and an independent watchdog agency, the Marine Mammal Commission, was created. Lesson 5. Median notch Cleavage between the paired flukes of a cetacean. Lesson 2. Melon In dolphins, a fatty bump on forehead that focuses echolocation sounds forward from the head Lesson 2. Miscible Capable of mixing. Lesson 6. Myoglobin An iron-containing protein found in muscle, which serves as a reservoir for oxygen and gives some muscles a red or pink color. Lesson 1. Mysticeti Whale species suborder belonging to the order Cetacea; includes whales that have baleen. Lesson 1, 2. Nares An external opening in the nasal cavity of a vertebrate; a nostril. Lesson 2. Naval Umbilicus scar. Lesson 2. Nursery Groups Dolphin social group that includes females and calves. Lesson 3. Odontoceti Whale species suborder belonging to the order Cetacea; includes the toothed whales. Lessons 1, 2. Opportunistic feeding Taking advantage of whatever food source is available. Lesson 2. Pectoral fin Either of the anterior pair of fins attached to the pectoral girdle of cetaceans or fishes, corresponding to the forelimbs of higher vertebrates. Lesson 2. Peduncle The portion of a cetacean's body behind the dorsal fin and anterior to the flukes; also called the tail stock. Lesson 2. Pinniped Group of marine mammals that includes seals, sea lions and walruses. Lesson 2. www.seatrek.org V08/50531 80
Appendix A: Vocabulary Pollution Undesirable state of the natural environment being contaminated with harmful substances as a consequence of human activities. Lesson 6. Porpoising Refers to the way some cetaceans make low, arcing leaps as they travel rapidly near the surface, usually to avoid predation. Lessons 1, 3. Promiscuous Not restricted to one sexual partner. Lesson 3. Rostrum Specifically the upper jaw of a cetacean; also sometimes used to refer to a beak that encompasses both the upper and lower jaws. Lesson 2. Sexual dimorphism The condition of having one of the sexes existing in two forms, or varieties, differing in color, size, etc. Lesson 2. Signature whistles Individually distinctive sounds produced by bottlenose dolphins to allow recognition of different individuals within a community and help maintain group cohesion. Lesson 2. Sirenia Order of mammals that consists of the manatee and dugong. Lesson 2. Sirenian Member of the mammalian order Sirenia. Lesson 2. Slip stream The area of reduced pressure or forward suction produced by and immediately behind a fast-moving object as it moves through air or water. See also hydrodynamic wake. Lessons 1, 3. Spy hop Behavior in which cetaceans raise their head above water to observe their surroundings. Lesson 3. Strand feed Hunting technique where dolphins chase fish into shallow water or onto grassy or muddy banks to drive them into an inescapable area; dolphins even slide up onto land to grasp the fish in their jaws and then slide right back into the water. Lesson 3. Synchronous display Elaborate displays, in which bonded males perform a sequence of behaviors in perfect unison. These behaviors include surfacing for a breath of air, leaping out of the water, tail slaps and glides, and swimming in identical patterns. Lesson 3. Tail lob This is an individual or cooperative method of hunting. Positioned on their belly, dolphins swim in a circular pattern, slapping the surface of the water lightly and quickly with their tail flukes. This scares passing fish, causing them to form a tight ball. The dolphins take turns swimming through the group of fish, capturing as many as they can. Lesson 3. Telescoping Modifications (via elongating or overlapping) of some bones of the cetacean skull, resulting in a streamlined skull with the nares positioned to permit easy breathing while keeping most of the head submerged. Lesson 1. Thermoregulation The process of maintaining a constant internal body temperature despite changes in the outside environmental temperature. Lesson 1, 2. Tursiops truncatus Genus and species of bottlenose dolphin; the most common dolphin of northern Atlantic and Mediterranean. Lesson 2. Ventral On or belonging to the lower surface of an animal. Lesson 2. Vertebrate A higher chordate; all have a skeleton, backbone, skull, and brain. Lesson 2. www.seatrek.org V08/50531 81
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Unit Overview The following materia
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Websites Developer Websites Mote Ma
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Lesson 1 Discovering Dolphins To ai
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Activity 1.1: Cetacean Interrogatio
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Instructor Copy 9. Dolphins drink t
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Instructor Copy 22. Research in zoo
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Activity 1.2: Lights! Camera! Actio
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Lesson 2 Behind the Bottlenose The
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Lesson 2 Behind the Bottlenose To i
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Lesson 2: Behind the Bottlenose Act
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Activity 2.1 Dolphin Details Handou
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Activity 2.2: Sensational Sound! Gr
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Page 31 and 32: Lesson 3 The Reel World Bottlenose
Page 33 and 34: Activity 3.1: Emotions in Motion Gr
Page 35 and 36: What are the different sounds used
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Page 39 and 40: Social Behaviors Dolphins use a var
Page 41 and 42: Activity 3.1 Emotions in Motion Han
Page 43 and 44: Lesson 4 Research Reality SeaTrek
Page 45 and 46: Activity 4.1: Exhilarating Ethology
Page 47 and 48: Activity 4.1 Exhilarating Ethology
Page 49 and 50: Activity 4.2: SeaTrek Videoconferen
Page 51 and 52: 10. The videoconference made me mor
Page 53 and 54: Lesson 5 Fin Factor Sarasota Dolphi
Page 55 and 56: Activity 5.1 Bay Watch Instructor C
Page 57 and 58: Activity 5.1 Bay Watch Handout 5.1.
Page 65 and 66: Activity 5.2 Sarasota Bay Ecosystem
Page 73 and 74: Lesson 6 Conservation Captured As a
Page 75 and 76: Activity 6.1: Investigation Intenti
Page 77 and 78: Activity 6.1 Investigations Intenti
Page 79: Appendix A: Vocabulary Delphinidae
Page 83 and 84: Appendix B: National Standards (9-1
Page 85 and 86: Appendix C: Sunshine State Standard
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LESSON 2 - SeaTrek Programs

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