Download Marine Arthropods

Ms. Bruno
Arthropods
Name ______________________________________________________
Marine Biology
Date _________________
Per ________
Marine Arthropods
Arthropod Characteristics:
Phylum: ___________________
(Arthro = __________, Pod = ________)
Invertebrate with an ________________ skeleton,
jointed _______________________, and a
_____________________ body
Over _______ of all animal species are Arthropods!
The arthropod body plan consists of:
__________ circulatory system
External Skeleton (_______________________)
Skeleton does not _________ with them, so they
must ____________
Molting:
Exoskeleton _______________ grow, so
they replace their ____________________
by molting, or ________________ the old
exoskeleton after growing a _______ one
that is not yet ___________________
Open Circulatory System:
Blood is not contained in ___________________
All the organs are constantly bathed in
__________________, a combination of ________ and
lymph
Blood is drawn in to the _____________ through holes
called ______________, then pumped out again to
__________________ through the tissues and return
again to the heart.
Ms. Bruno
Arthropods
Marine Biology
Steps of Molting:
1. Secretion of ___________________________ to
dissolve old ___________________
2. New _________________ formed under old
_____________________. Break __________ of old
exocuticle. Old cuticle ________________ at line of
_______________________
3. ________________ with water/air to increase
_________ while skeleton is ___________. Hardening
of new _____________________. Vulnerable until new
skeleton ______________________
Growth Stages:
Arthropod passes through ____________ growth stages
in life cycle.
Some stop molting as _____________ (insects, most
spiders)
Some continue to molt (________________,
________________________)
Reproduction in Marine Arthropods:
Sexes are typically
_____________________
Some species are
________________________ (barnacles)
________________fertilization: males have
specialized ____________________to
transfer ______________ to females
Ms. Bruno
Arthropods
Marine Biology
Chelicerata:
Includes:
__________ pairs of legs (8 legs total)
Horseshoe Crabs:
Common off of the _______________and
Gulf coasts
Large ____________ carapace bearing
_______________ eyes
Abdomen terminates in a long _________
called the _____________; used to turn the
animal _____________ side up
Crustaceans:
Includes:
Possess a series of _________ _________
called book gills
Most are _____________________
__________ pairs of walking legs
Copepods:
The ______________ & most
_________________ crustacean
Marine _____________________
Elongated ____________________
Filter ________________ mouth
Ms. Bruno
Arthropods
Marine Biology
Barnacles:
Usually live ___________________ to a surface,
including crabs and ___________
Surrounded by thick calcium ____________
Lie on their ________________ and use feathery
appendages called __________ (attached to legs) to
___________ feed
Barnacles and Whales:
________________ Relationship
Barnacles get:
Whales are typically not bothered, and the barnacle
“suit of armor” often ________________ them
Cool Decapods!
Japanese Spider Crab:
Mantis Shrimp:
Decapods:
Deep Sea Shrimp:
_________ pairs of legs (10 total)
First pair are _____________
Includes:
Fiddler Crab:
_________________ group of crustaceans