Salmon Life Cycle Tag & Migration Ecology

🖥️ Walkthrough Slides (6) 📝 Take Quiz 🗂️ Vocabulary 📖 Curriculum Guide

Interactive Digital Curriculum

Interactive Walkthrough Slides

Step through the complete digitized curriculum deck with illustrated concepts, step-by-step procedures, teacher tips, and interactive knowledge checks.

Slide 1 Species Overview

The Anadromous Marvel: Pacific Salmon

The Six Life Stages of łiq’a

Pacific salmon are legendary travelers. Born in cold, bubbling freshwater gravel beds in the shadow of Alaska mountain ranges, they journey thousands of miles into the stormy North Pacific Ocean before returning home to complete the circle of life.

In Dena’ina, salmon is called łiq’a. Salmon are the lifeblood of Tyonek: feeding families, nourishing bears and eagles, and fertilizing forest trees with ocean marine nutrients.

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Six Stages: 1. Egg → 2. Alevin → 3. Fry → 4. Parr → 5. Smolt → 6. Adult Spawner

Slide 2 Early Life History

From Gravel to Ocean: Stages 1 through 3

Egg, Alevin, and Free-Swimming Fry

1. Egg: Glowing translucent orange spheres buried in clean gravel redds through sub-zero winter months.

2. Alevin: Newly hatched larvae with yolk sacs attached to their bellies, hiding from predators deep in gravel crevices.

3. Fry: Absorbed yolk sac; emerges into stream pools to hunt aquatic insect larvae.

⚡ Quick Knowledge Pulse Choose 1 answer

What is an alevin, and what sustains it before it begins hunting food?

Slide 3 Ocean Journey

Transformation & Migration: Stages 4 through 6

Parr, Smolt, and Returning Adult Spawners

4. Parr: Camouflaged with vertical dark stripes (parr marks) to hide among stream cobbles.

5. Smolt: Undergoes smoltification! Turns bright silver and shifts kidney chemistry to survive saltwater entry.

6. Adult Spawner: Grows massive feeding on ocean squid and herring; returns to birth creek, changes color to crimson red, spawns, and dies to feed the river.

Slide 4 Active Simulation Game

The Salmon Life Cycle Tag Game Protocol

Navigating the Perilous Journey Across the Gym

The gym floor represents the migration pathway from the Chuitna River headwaters to the Pacific Ocean and back:

Students start as EGGS in the gravel zone. To advance to FRY, they must hop on one foot. To enter the OCEAN zone, they must avoid 'PREDATORS' (invasive pike, diving mergansers, commercial nets, and bears!).

Surviving adults must jump over a 'PERCHED CULVERT' hurdle to reach the spawning redd and scatter food tokens!

Slide 5 Sensory Biology

Olfactory Homing: Smelling Their Way Home

Chemical Memory in the Nasal Pores

How does an adult salmon find the exact tributary where it was born after 3 years roaming 2,000 miles across the Pacific Ocean?

As smolts leave their home creek, they chemically imprint on the unique mineral, soil, and vegetation scent profile of the water. When returning, salmon follow magnetic compass lines to the mouth of Cook Inlet, then smell their way home stream by stream!

Slide 6 Cultural Synthesis

Tebughna Fish Camp & Traditional Stewardship

The Sacred Bond with łiq’a

Salmon are not considered an 'exploitable resource' in Dena’ina culture—they are respected as non-human relatives.

At Tyonek fish camps, families work together: harvesting kings with beach setnets, filleting, salting, and hanging strips in alder-fired smokehouses. The First Salmon Ceremony returns salmon backbones to the tide, thanking the fish for their gift of life.

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Official curriculum guide preview for Salmon Life Cycle Tag & Migration Ecology

📄 14.-Salmon-Life-Cycle-Tag.pdf

Essential Inquiries & Learning Targets

Core Essential Questions:

What are the six distinct stages in the anadromous life cycle of Pacific salmon (Oncorhynchus spp. / łiq’a)?
How do physiological adaptations allow salmon to transition from freshwater streams to the salty open ocean and back?
What natural hazards and human obstacles must salmon overcome to return to their birth gravel to spawn?

Student Learning Objectives:

Identify and sequence the 6 life cycle stages: Egg, Alevin, Fry, Parr, Smolt, and Adult Spawner.
Participate in the active gym/field tag simulation navigating predatory obstacles and hydraulic barriers.
Explain the cultural significance of łiq’a as the economic and spiritual backbone of Tebughna life.

Self-Grading Assessment

Comprehension Mastery Quiz

Test student understanding of scientific principles, local Alaska ecology, and problem-solving scenarios from the lesson guide. Earn the Salmon Life Cycle Tag & Migration Ecology Master credential!

What critical physiological process allows freshwater salmon to enter salty ocean water without dehydrating?

Terminology & Dena’ina Context

Specialized Vocabulary Flashcards

🗂️ Interactive Vocabulary Deck Card 1 of 4

Click the card or press Space to flip. Use arrow keys to navigate.

Term Click to flip ↷

Anadromous

Definition & Context Click to flip ↶

Fishes that hatch in freshwater, migrate to the ocean to mature, and return to freshwater to spawn.

Alaska Context:

Ichthyology

Educator Guide

Curriculum Standards & Activity Protocol

📚 Standards Alignment (NGSS & Alaska Cultural Standards)

3-LS1-1

Develop models to describe that organisms have unique and diverse life cycles but all have in common birth, growth, reproduction, and death.

NGSS

🏔️ Local Alaskan & Tebughna Context

Tyonek subsistence fishers target king (Chinook) salmon in May–June and silver (coho) salmon in July–August using beach setnets.
The Chuitna, Beluga, and Theodore Rivers provide vital spawning gravels for all five wild Pacific salmon species.

📦 Required Materials & Classroom Setup

✓ Gym or outdoor playing field✓ Cones to mark Freshwater, Estuary, and Ocean zones✓ Foam hurdles to simulate culverts✓ Pinnies or jerseys for predators (Pike, Bear, Fisher)

🔬 Step-by-Step Hands-on Activity Guide

Step 1: Setup Migration
Mark Stream, Ocean, and Spawning zones across field.
Step 2: Assign Hazards
Designate 3–4 predator taggers and 1 perched culvert obstacle.
Step 3: Simulate Run
Salmon players attempt to navigate through life stages to spawn.
Step 4: Survival Rate
Count surviving adult spawners and calculate percentage survival.

💬 Wrap-Up Discussion & Evidence of Learning

Discussion Questions:

Out of 3,000 eggs laid in a redd, why do only 2 to 4 adults typically survive to spawn?
How do dying spawned-out salmon nourish the spruce forests along the riverbanks?

Evidence of Learning Rubric:

Student accurately sequences the 6 stages of the salmon life cycle.
Student articulates how human stream restoration (culvert fixes) directly increases salmon survival.

District Geographic Information System

2025 TTCD Annual Report

20 Years of Tribally Directed Conservation

Paid Summer Youth Internships