Species Profile
Petromyzon Marinus
Sea lamprey
KingdomAnimalia
PhylumChordata
ClassCyclostomata
OrderUnknown
FamilyUnknown
Introduction
Petromyzon marinus lives in marine and freshwater.
Adult is parasitic on fishes.
Larva (ammocoetes) is free-living.
Size & Structure
01
Eel-like elongated body
02
Circular suctorial mouth
03
No jaws or paired fins
04
Smooth scaleless skin
Petromyzon Marinus — 3D Model
General Features
- Coelom
- Coelomate
- Body plan
- Tube within a tube body plan (Deuterostomous)
- Germ layer
- Triploblastic
- Metamerism
- Absent
- Body symmetry
- Bilateral
- Fertilization
- External
- Digestion type
- Complete
- Nervous system
- Well developed brain and spinal cord
- Excretory organ
- Kidneys
- Body temperature
- Poikilothermic, euryhaline
- Circulatory type
- Closed circulation, single
- Development type
- Indirect
- Respiratory type
- Branchial respiration through gill pouches
- Mode of excretion
- Ammonotelism
- Circulation system
- Closed
- Skeleton structure
- Endoskeleton (cartilaginous)
- Level of Organisation
- Organ system level
- Regulation of Osmosis
- Osmoregulator
Ecology
Regulates fish populations
Part of aquatic food web
Indicator of ecosystem balance
Economic Importance
Fishery impact species
Research on vertebrate evolution
Ecological management importance