nematodes andrea mcquillan, carlee macneill, hannah gillam & luke coxhead
TRANSCRIPT
NEMATODES
Andrea McQuillan, Carlee MacNeill, Hannah Gillam & Luke Coxhead
InvertebratesVery diverseParasitic or free living20 000 classified speciesMore known parasitic species
INTRODUCTION
Kingdom: Anamalia
Phylum: Nematoda
Class:AdenophoreaSecernentea
CLASSIFICATION
Little research of evolutionFossils dating back to 500 million years agoRelated to arthropods and priapulidsEvolved from unicellular organisms with no
symmetry to radially symmetric organisms and then to bilaterally symmetric organisms
They have hardly evolved over the past few millions of years
EVOLUTION
Size: Most are less than 1 mm to 5 cm in lengthCan measure over 1 meter
Cylindrical, bilateral symmetry, unsegmented
EpidermisTough but flexible cuticle
CHARACTERISTICS
Longitudinal musclesPrimitive body cavitySimple nervous system
CHARACTERISTICS
Variety of patterns that can all be related to one pattern.
2 phases: parasitic and pre-parasiticReproduction
In most species it takes place in the hostMajority reach adulthood and start
mating in 2-3 monthsCan live up to two years
LIFE CYCLE
Stomodeum
Intestine
Excretory System
http://www.youtube.com/watch?v=fI33nRmK70s
DIGESTIVE SYSTEM
Most significant source of consumers
Can lay up to 200 000 eggs a day
In a handful of dirt you can find thousands of nematodes
Parasitic Nematodes can cause a variety of diseases
INTERESTING FACTS!
"Ne matode Ge nome E v o lu t i on* . " Ne mat ode Ge nome Ev o lu t i on . N .p . , n . d . We b . 25 Mar. 2014 . <h t t p : / / w w w.w ormbook .o rg / chap te r s / w w w _ ge nome v o l / ge nome v o l . h tm l> .
"Ne matode s . " Ne mat ode s . N .p . , n . d . We b . 25 Mar. 2014 .
<h t t p : / / w w w.b i ocon t ro l . e n tomo logy. co rne l l . e du / pa t hoge ns / ne mat ode s .h tm l> . " I n t roduc t i on t o t he Ne mat oda . " I n t roduc t i on t o t he Ne matoda . N .p . , n . d . We b . 25 Mar. 2014 .
<h t t p : / / w w w.ucmp .be rke l e y.e du / phy l a / e cdy sozoa / ne matoda .h tm l> . "P l ace n tone ma G igan t i s s imum. " P l ace n tone ma G i gan t i s s imum . N .p . , n . d . We b . 25 Mar. 2014 .
<h t t p : / / w w w.sp r i nge r re f e re nce . com/ docs / h tm l / chap te rdb id / 142533 .h tm l> . "E v o lu t i on o f Ne matode D e v e l opme nt . " E v o lu t i on o f Ne matode De v e lopme nt . N .p . , n . d . We b . 26 Mar.
2014 . <h t tp : / / w w w.sc i e nce d i re c t . com/ sc i e nce / a r t i c l e / p i i / S0959437X00001106>. "The Ev o l u t i ona ry H i s t o ry o f Ne matode s . " Br i l l . N .p . , n . d . We b . 26 Mar. 2014 .
<h t t p : / / w w w.b r i l l . com/ e v o lu t i ona ry- h i s t o ry - ne matode s> . "NE MATODE . " NEMATODE . N .p . , n . d . We b . 01 Ap r. 2014 .
<h t t p : / / w w w. facu l t y.pnc .e du / j camp / pa ras i t / ne matode .h tm l> "The P hy l um Ne mat oda . " The Ne matode s ( P hy lum Ne mat oda ) . N .p . , n . d . We b . 31 Mar. 2014 .
<h t t p : / / w w w.e a r th l i f e . ne t / i nv e r t s / ne mat oda .h tm l> . "NE MATODE . " NEMATODE . N .p . , n . d . We b . 01 Ap r. 2014 .
<h t t p : / / w w w. facu l t y.pnc .e du / j camp / pa ras i t / ne matode .h tm l> "Ne matode Foss i l s Ne matoda . " Ne mat ode Foss i l s Ne matoda . N .p . , n . d . We b . 01 Ap r. 2014 .
<h t t p : / / w w w. foss i lmuse um.ne t / f os s i l s / Ne matoda - f oss i l s . h tm>.
SOURCES