Transcript Ichthyology Lab:

Introduction to the Fishes
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Focus
• 20,000+ species
• will cover important species
– selected regional fishes
– representatives of major groups
– well-known fishes
– all higher taxa
• Order: primitive to recent
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Goals
• how to identify fishes using a key
• how to recognize important fishes and
taxa
• characteristics of important fishes and taxa
• the classification system and higher
taxonomic categories
• logic of classification system
• how to identify newly encountered fish
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Details
• laboratory handouts will identify which species
and taxa are to be learned
• goal to minimize without sacrificing a sound
framework
• additional information will be presented during
intro. and demonstrations
• room on handouts for notes
• learn either scientific or standardized common
names (actual names of higher taxa)
(2 points plus 0.5 extra credit for both)
• learn level if given (e.g. Class Chondrichthyes)
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Lab Handouts
Chordata
ICHTHYOLOGY
Laboratory 6--Fishes
Phylum Chordata – chordates
Craniata
Subphylum Craniata (Vertebrata)
Gnathostomata
Placodermi
Chondrichthyes
Holocephali
Family Myxinidae - hagfishes (32 spp)
Cephalaspidomorphi
Order Myxiniformes
Myxini
Class Myxini - one family—hagfishes
Eptatretus stouti - Pacific hagfish
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Final Exam on the Fishes
• 120 point exam
• practical—using specimens and slides
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Two Steps to Learning the Fishes
• learning to recognize an individual
• knowing the name (sci or common) and
higher taxa
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Fishes Learning Program
• The traditional method of learning fishes
in this course and other ichthyology
courses primarily involves direct
examination of preserved specimens.
• limitations:
– challenge to remember characters from fish
keys
– insufficient time to develop patterns of
recognition for the species
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Consider:
• recognizing your friend at the airport
versus recognizing someone else's friend
• analogous to recognizing a fish using
subtle patterns versus memorizing series
of characters
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Fishes Learning Program Goals
• to help students learn to recognize
patterns
• aid long-term retention
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Fishes Learning Program
• designed to allow quick viewing of the species presented
in each lab. This aids in seeing each species numerous
times
• three or more slides of each species so less likely to end
up leaning photographic details
• FLP allows the slide order to be randomized with the
click of a button
• view the fish, attempt to identify it, and then quickly see
the correct identification using the mouse cursor to see if
correct
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Program Evaluation
• Students will be divided into two groups systematically: A and Z
• Each lab will consist of an introduction by the instructor after which
students will be divided into the two groups
• student groups will alternate examining specimens and using the
FLP
• Testing: The data used for comparisons 1 and 2 below will consist
of a 10 question quiz given at the end of each laboratory period
• five extra-credit points will be awarded each lab for submitting data
forms, taking the quizzes, and completing a short survey
• students will be able to earn up to 5 additional points for
performance on the quiz, 0.5 points per correct answer
• quiz results will be used to evaluate the effectiveness of the
program—better, worse, or the same as the traditional method
• evaluating program not students
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Demo—Fishes Learning Program
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Information for Participants
• Collective results from quizzes, data forms, and
the survey may be published on the effectiveness
of this learning method.
• Students will not be identified in anyway, no
individual results will be published, and all such
results will be kept strictly anonymous.
• Students will receive extra credit in Ichthyology
for submitting data forms, a survey, and
completing quizzes.
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Tetraodontiformes
Perciformes
Pleuronectiformes
Teleostei
Scorpaeniformes
Gasterosteiformes
Ostariophysi
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Cyprinodontiformes
Atheriniformes
Lophiiformes
Gadiformes
Percopsiformes
Salmoniformes
Esociformes
Siluriformes
Characiformes
Osteichthyes
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Cypriniformes
Clupeiformes
Acanthodii
Gnathostomata
Anguilliformes
Elopiformes
Hiodontiformes
Sarcopterygii
Placodermi
Craniata
Amiiformes
Lepisosteiformes
Acipenseriformes
Polypteriformes
Coelacanthiformes
Elasmobranchii
Holocephali
Cephalaspidomorphi
Myxini
Chondrichthyes
Lepidosireniformes
Myliobatiformes
Rajiformes
Lamniformes
Squaliformes
Chimaeriformes
Petromyzontiformes
Myxiniformes
Chordata
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lab
Ichthyology 425--Orders and higher taxa
Phylum
Subphylum
Superclass
Class
Actinoptergyii
Subclass
Division
Superorder
Acanthopterygi
i
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