Hiroshima University Syllabus

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Academic Year 2024Year School/Graduate School School of Applied Biological Science
Lecture Code L2020006 Subject Classification Specialized Education
Subject Name 水圏生態学I
Subject Name
Subject Name in
Hydrospheric EcologyI
サカイ ヨウイチ
Campus Higashi-Hiroshima Semester/Term 2nd-Year,  Second Semester,  3Term
Days, Periods, and Classrooms (3T) Thur1-4:ABS C302
Lesson Style Lecture Lesson Style
(More Details)
On demand lecture
Final examination will be held in the face-to-face style. 
Credits 2.0 Class Hours/Week   Language of Instruction B : Japanese/English
Course Level 3 : Undergraduate High-Intermediate
Course Area(Area) 26 : Biological and Life Sciences
Course Area(Discipline) 01 : Agricultural Sciences
Eligible Students
Keywords SDG_14, Fish, social behaviors, mating strategy, field work methods, behavioral ecology 
Special Subject for Teacher Education   Special Subject  
Class Status
within Educational
(Applicable only to targeted subjects for undergraduate students)
Criterion referenced
(Applicable only to targeted subjects for undergraduate students)
Integrative Hydrospheric Science Program
(Knowledge and Understanding)
・To comprehensively understand morphological, ecological, physiological, pathological, biochemical, and genetic features of various creatures in hydrosphere.
・Understanding on relation between form and ecology of hydrosphere organisms and hydrosphere environment
Class Objectives
/Class Outline
Understand the how and why approaches through discussing various topics in the behavioral ecology. 
Class Schedule 1: Introduction  
History of behavioral and ecological science in animals
Natural selection
Fitness (Lifetime reproductive success)
2: Life-history of reef fishes
Mating behavior
Spawning strategy
Migration and dispersal
3: Methodology of fish behavioral ecology
Ultimate factors and proximate factors
Underwater survey
Individuals discrimination in wild populations
4: Mating systems
Spatial distribution and mating relationship
Conflicts and cooperation between sexes
Social structure
5: Territoriality
Home range and territory
Dominance relationship
Resources and optimal territory size
6: Sexual selection
Male-male competition and mate choice
Sexual dimorphism
Operational sex ratio
Good-gene and runaway process
7: Parental care
Gamete production rate
Intersexual conflict
Cannibalism: an alternative tactic
8: Sex determination and hermaphroditism
Size-advantage model
Social control
Bi-directional sex change
Sex change process
9: Alternative strategy
Strategy and tactic
Sneaking behavior
10: Sperm competition
Males gonadal investment and mating system
Sperm economy
Polymorphism in gametes
11: Cooperative behaviors
Kin selection
Symbiosis and co-existence
12: Foraging ecology
Generalist and specialist
Optimal behavioral schedule
Interspecific competition
13: Predation and mimicry
Camouflage and warning coloration
Physiological and chemical defense
14: Biodiversity in reefs
Conservation efforts and problems
15: Final examination 
Introduction to Behavioral Ecology
by Krebs & Davies (Oxford Univ Press)

PC or AV used in
(More Details) PC presentation 
Learning techniques to be incorporated  
Suggestions on
Preparation and
Further readings (announced in the lecture) may help you to understand details of background of the lecture. 
Requirements Students who wish to attend this class are expected to understand (especially hearing) Japanese  in some degree.  
Grading Method Total score of quiz provided in each lecture and the final examination.
Practical Experience  
Summary of Practical Experience and Class Contents based on it  
Please fill in the class improvement questionnaire which is carried out on all classes.
Instructors will reflect on your feedback and utilize the information for improving their teaching. 
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