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Slide 1 - Lion's Mane Jellyfish Cyanea capillata
Lion's Mane Jellyfish Cyanea capillata
Evolution, Taxonomy, Genetics, Ecology & Development
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Photo by Manny Peralta on Unsplash
Lion's Mane Jellyfish: Taxonomy, Genetics, Ecology, and Development
Generated from prompt:
Make a presentation about Chincive he dial of this pa. Pot probin gage readers an diger sage alei resentine at n animal from 4 different phyla. Directions: PART ONE: Introduce your organism and connection to evolution and taxonomy a. Select one organism that is NOT DOMESTICATED and state its taxonomy (domain, kingdom, phylum, class, order, family, genus, species). You CAN use wikipedia for this! b. What does the Phylum name mean? What are some other organisms in the same phylum? c. Describe several of its adaptations. PART TWO: Connection to genetics d. How many chromosomes does your organism have? (If scientists have not determined this for the species you chose then find a range of chromosomes for this group of organisms, ask me if you need help with this) e. How does your organism reproduce? Sexually, asexually or both? If your organism has males and females, how do the chromosomes differ in the two sexes? (If this is not known by scientists just say it is not known) PART THREE: Connection to ecology Review/familiarize yourself with several key ecology terms including heterotroph, food web, habitat, niche. symbiotic relationship, ecosystem services, and resilience. Use that knowledge and some independent research to answer these questions: f. What niche does your organism fit into in its environment? Your answer to this question can focus on your organism's role within a food web. g. Describe one symbiotic relationship of which your organism is part. h. What is one way that humans have impacted this organism? i. Identify where in the world it is found, and briefly describe its habitat. Part FOUR: Development j. Describe the life cycle of your organism. k. What type of symmetry does your organism exhibit?
This presentation provides a comprehensive overview of the Lion's Mane Jellyfish (Cyanea capillata), the largest known jellyfish species. It covers introduction and taxonomy within Phylum Cnidaria, key adaptations like nematocysts and radial symmetry, genetics and reproduction (sexual and asexual), ecological niche as a planktonic predator, symbiosis with fish, human impacts such as ocean acidification, global habitat in cold northern waters, and detailed life cycle from planula to adult medusa.
May 12, 202617 slides
Slide 2 of 17
Slide 2 - Presentation Agenda
- Part 1: Introduction, Taxonomy & Adaptations
- Part 2: Genetics & Reproduction
- Part 3: Ecology - Niche, Symbiosis, Impacts & Habitat
- Part 4: Development - Life Cycle & Symmetry
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Photo by qui nguyen on Unsplash
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Slide 3 - Part One
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Slide 4 - Taxonomy
- Domain: Eukarya
- Kingdom: Animalia
- Phylum: Cnidaria
- Class: Scyphozoa
- Order: Semaeostomeae
- Family: Cyaneidae
- Genus: Cyanea
- Species: capillata
Source: Wikipedia
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Slide 5 - Lion's Mane Jellyfish
- Largest known jellyfish species
- Up to 36m tentacle length (including trailing)
- Bell up to 2m diameter
- Found in cold northern waters
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Photo by Ekaterina Zlotnikova on Unsplash
Source: Wikipedia
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Slide 6 - Phylum Cnidaria
- Name means 'stinging nettle' (cnida = nettle)
- Other organisms: Corals, sea anemones, hydras, box jellyfish
- Key trait: Cnidocytes with nematocysts for prey capture/defense
Source: Wikipedia
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Slide 7 - Key Adaptations
- Long trailing tentacles with nematocysts stun prey
- Pulsing bell for jet propulsion and buoyancy control
- Radial symmetry aids in prey capture from all directions
- Gastrovascular cavity for extracellular digestion
- Planula larva for dispersal
Source: Wikipedia
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Slide 8 - Part Two
2
Connection to Genetics
Chromosomes and Reproduction
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Photo by digitale.de on Unsplash
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Slide 9 - Genetics Facts
- Chromosome number: Not precisely determined for species; Scyphozoa range 12-48 (2n)
- Reproduces both sexually and asexually
- Sexual: Gonochoristic medusae release gametes into water
- Asexual: Polyps bud and strobilate to produce ephyrae
- Sex chromosomes: Not known; determination likely environmental
Source: Wikipedia & scientific literature
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Slide 10 - Part Three
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Slide 11 - Ecological Niche & Symbiosis
- Niche: Planktonic predator; heterotroph consuming zooplankton, small fish
- Role in food web: Preyed upon by ocean sunfish, leatherback turtles
- Symbiotic relationship: Juvenile fish (e.g., stormcockfish) shelter among tentacles for protection from predators
Source: Wikipedia
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Slide 12 - Human Impacts & Habitat
Human Impact Ocean acidification and warming disrupt life cycle Overfishing reduces prey availability Plastic pollution entangled in tentacles
Global Habitat Northern Atlantic & Pacific Oceans Arctic to North Sea Epipelagic zone (surface to 200m) Cold temperate coastal & open waters
Source: Wikipedia
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Slide 13 - Natural Habitat
- Prefers cold waters <12°C
- Blooms in summer coastal areas
- Migrates vertically daily
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Photo by Ekaterina Zlotnikova on Unsplash
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Slide 14 - Part Four
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Slide 15 - Life Cycle
1: Planula Larva Ciliated larva from fertilized egg; swims to substrate 2: Polyp Attaches, grows; asexual budding/reproduction 3: Strobila Polyp segments into stack of ephyrae via strobilation 4: Ephyra Young medusa; grows tentacles and bell 5: Adult Medusa Mature jellyfish; sexual reproduction, up to 2m bell
Source: Wikipedia
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Slide 16 - Symmetry & Summary
- Radial symmetry: Body parts arranged around central axis
- Enables omnidirectional sensing and feeding
- Typical of Cnidaria phylum
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Slide 17 - Key Takeaways
Cyanea capillata exemplifies marine biodiversity Through complex life cycles, adaptations, and ecological roles
Questions? Thank you!
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Photo by Kiara Sztankovics on Unsplash
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