reino animalia, anelideos
TRANSCRIPT
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REINO ANIMALIA
Grupo: Invertebrados
Filo: Anelídeos
by prof. LENO
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Características Gerais:
Os anelídeos possuem simetria bilateral;
São triblásticos;
Celomados;
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Encontrados em ambientes: Terrestre, marinho.
• São vermes de corpo cilíndrico;
• Divididos em anéis, conhecidos como: segmentos ou metâmeros.
• Corpo alongado.
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METAMERIA
É a divisão do corpo em metâmeros.
Apresenta-se tanto externa como internamente
Sendo que cada anel abriga diversos órgãos
individualizados como nervos, músculos e
unidades excreção.
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Integrantes do filo
• Minhocas;
• Sanguessugas;
• Nereidas.
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Minhocas
by prof. LENO
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Sanguessuga
by prof. LENO
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Nereidasby prof. LENO
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Classificação do Anelídeos
• Poliquetas: Palolo e a Nereidas
• Oligoquetas: Minhocas
• Aquetas: Sanguessugas
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Classe Poliquetas
• Do grego polys ‘muitos’ chaeta ‘cerdas’.
Animais marinhos, na maioria das vezes podem
viver enterrados na areia ou em tubos de
Calcários, que eles mesmos secretam.
• São errantes predadores;
• Apresentam órgãos sensoriais representados por olhos e tentáculos.
by prof. LENO
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• Os poliquetas são dióicos;
• Fecundação interna, desenvolvimento indireto (estágio larval);
• Apêndices denominados parapódios
associados a locomoção;
• Podem ser livres, ou fixos.
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Palolo: Eunice viridis
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Nereida: Nereis sp
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by prof. LENO
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by prof. LENO
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Classe Oligoquetas
• São animais terrestres, dulcícolas;
• Monóicos, com fecundação externa;
• Cerdas curtas e menos numerosas.
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Anatomia
by prof. LENO
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Respiraçãoby prof. LENO
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Reprodução
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• Apesar de serem hermafroditas, utilizam oMecanismo de fecundação cruzada.
• Clitelo produz o casulo onde serão eliminados os óvulos maduros.
• Após os óvulos se deslocam para a parte anterior assim sendo fecundados pelos sptz de outra minhoca.
• O desenvolvimento é direto (sem larvas).
by prof. LENO
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by prof. LENO
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Minhoca Lumbricus terrestris
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by prof. LENO
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by prof. LENO
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Classe Aquetas
• Aquetas do prefixo a ‘ não’, ‘ sem’ chaeta, ‘cerdas’.
• Terrestres ou aquáticos;
• Monóicos, desenvolvimento direto.
• Podem ser predadoras de pequenos invertebrados, ou parasitas.
by prof. LENO
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• Fixam-se através de ventosas;
• Raspam a pele da vítima causando hemorragia;
• São capazes de sugar muitas vezes o volume de sangue comparado ao seu corpo;
• A HIRUDINA é a substância anti-coagulante.
by prof. LENO
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Sanguessugas ou Hirudíneosby prof. LENO
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by prof. LENO
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by prof. LENO
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by prof. LENO
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by prof. LENO
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• Na antiguidade era utilizada na medicina a
espécie Hirudo medicinalis para fazer
sangria em pacientes com problemas de
hipertensão.
by prof. LENO