ANATOMY OF SEA TURTLES - School of Veterinary … OF SEA TURTLES Jeanette Wyneken, PhD Florida...

ANATOMY OF SEA ANATOMY OF SEA TURTLESTURTLES

Jeanette Wyneken, PhDJeanette Wyneken, PhDFlorida Atlantic UniversityFlorida Atlantic University

External Parts, Key CharacteristicsExternal Parts, Key Characteristics

Key CharacteristicsKey Characteristics

Species Species IdentificationIdentification

PreocularScale

Natator depressus

From D.R. Mader 2005 Reptile Medicine and Surgery, 2nd Ed.

Sea Turtle Species of the WorldSea Turtle Species of the World

Photo: Matthew Godfrey

Green Turtle

Loggerhead Turtle

Hawksbill Turtle

Flatback Turtle

Leatherback Turtle

Sea Turtle Species of the WorldSea Turtle Species of the World

Photo: Matthew Godfrey

Green Turtle

Loggerhead Turtle

Hawksbill Turtle

Flatback Turtle

Leatherback Turtle

Characteristics – ridley

Identified by having more than 5 costal scutes

Characteristics – ridleyDistinct Infra-marginal pores which lead to Rathke’sSimilar glands in freshwater turtles produces scent

The Shell & SkeletonThe Shell & Skeleton

How to take at turtle apart

Who, What, Where, WhenWho, What, Where, When

Inside the Inside the Inside the Inside the Carapace PlastronCarapace Plastron

Heart / Heart / Ext.JugularExt.Jugular

InsideInside andand InternalInternal LandmarksLandmarks

Basic Gastrointestinal AnatomyBasic Gastrointestinal Anatomy

Oral Cavity

Large SmallIntestine Intestine

Cloaca

Alimentary Canal: esophagus, stomach, intestines & cloacaAlimentary Canal: esophagus, stomach, intestines & cloaca

Oral Cavity (Oral Cavity (BuccalBuccal Cavity)Cavity)

Mouth: Prey capture and transport, also display.

Teeth: No!

Rhamphotheca or beak: cutting & crushing, also aggression & defense

Tongue: Taste food manipulation

RhamphothecaRhamphotheca =Beak=BeakRhamphotheca (or beak) varieties:•Cusped,thick & crushing,•Serrated and clipping, •Thin and slicing•Species-specific

D.R. Mader Photo

Minimally mobile tongue compared with tortoises

Jaw & Jaw Joint Jaw & Jaw Joint

Basic AnatomyBasic Anatomy

Oral Cavity

Large SmallIntestine Intestine

Cloaca

Alimentary Canal: esophagus, stomach, intestines & cloacaAlimentary Canal: esophagus, stomach, intestines & cloaca

EsophagusEsophagus-- tube to the stomachtube to the stomach

EsophagusEsophagus

Esophagus is similar in most sea turtles; muscular wall with papillae lining lumen.

Intestines Intestines and glandsand glands

GIGI DiversityDiversity in Sea Turtlesin Sea Turtles

CloacalCloacal FormForm

Proctodeum Urodeum Coprodeum Rectum

CoprodeumUrodeumProctodeum

P U C RP U C R

Urinary bladderUrinary bladder

CloacalCloacal AnatomyAnatomy

P U C RP U C R

Gonadal Systems

ImmatureOvary Ovary Testis

Gonadal Systems

ImmatureOvary Maturing Ovary Testis

& Oviduct w/ eggs

Lungs & HeartLungs & Heart Lung Longitudinal SectionLung Longitudinal Section

Brain & Sense Organs

D.R. Mader photo

ANATOMY OF SEA TURTLES - School of Veterinary … OF SEA TURTLES Jeanette Wyneken, PhD Florida...

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