浮游水母类的一般形态.

合集下载
相关主题
  1. 1、下载文档前请自行甄别文档内容的完整性,平台不提供额外的编辑、内容补充、找答案等附加服务。
  2. 2、"仅部分预览"的文档,不可在线预览部分如存在完整性等问题,可反馈申请退款(可完整预览的文档不适用该条件!)。
  3. 3、如文档侵犯您的权益,请联系客服反馈,我们会尽快为您处理(人工客服工作时间:9:00-18:30)。
– Medusoid forms: • nectophore; • pneumatophore; • gonophore; • bract;
Classification of Siphonophora:
Suborder Disconanthae :Family Porpitidae Suborder Cystonectae:Family Physaliidae: Suborfer Physonectae:Family Agalmidae
Reproduction:
– dioecious,gonads situated on the radial canals or inside stomach
§5.2 Class Hydromedusae
Hydromedusae
>2000 species,6 orders:
– velum – presence or absence ocelli and statocysts – position of gonads – type of life cycle
(六) Order Siphonophora
Specialized group of medusae with polymorphic colony
Morphology of Siphonophora
Modified medusoid and polypoid inviduals:
– Polypoid zooids: • gastrozooids; • dactylozooids; • gonozooids;
Family Geryoniidae: Liriop: L. tetraphylla Family Rhopalonematidae Aglaura: A. hemistoma
(五) Order Narcomedusae
Family Aeginidae:
– Solmundella bitentaculata – Aegina citrea
Chapter 5 Coelenterata
浮游水母类的一般形态、分类、 生物学与经济意义
General features
two primary lays: outer ectoderm and inner endoderm radial symmetry
Class Hydromedusae Class Scyphomedusae
• Leuckartiara 厦门隔膜水母
(二) Order Leptomedusae
本目12科,我国记录9科,介绍常见4科。
– 1、Family Campanulariidae:
• Phialidium: P. chengshanense • Obelia
– 2、Family Eirenidae:
(一) Order Anthomedusae
本目有22科,介绍常见4个科。
– 1、Family Tubulariidae
• Euphysora
– 2、Family Bougainvilliidae
• Koellikerina
– 3、Fmaily Velellidae:one genus,one species – 4、Family Randeidae
(二) 内部形态:
Digest system; Gastrovascular system: Nervous system and sense organs: Reproduction:diovcious
二、Clasification
1 Key to Class Scyphomedusae
1 Cubical umbrella form.................................Cubomedusae Umbrella not cubical form...........……….........……...…..2
– morphology: operculum, capsule and thread – classification
Internal features
Gastrovascular System: gastrovascular-cavity Muscular System:radial and circular fibers Nervous and Sensory Cell: – nerve net – ganglion cell – neurosecretory cell
√ Sensory Organ
– pigment cell – statocyst: – open marginal vesicle – closed marginal vesicle – free marginal sensoty club – enclosed marginal sensoty club
§5.1 Morphology
Hydromedusae
பைடு நூலகம்
External features
Form:polypoid and medusoid Morphology
– umbrella: exumbrella and subumbrella
Velum and pseudovelum Manubrium and mouth lips Tenacle: marginal and oral tentacles Nematocyst:
• Eirene
– 3、Family Eutimidae
• Eutima
– 4、Family Aequoreidae
• Aequorea
(三) Order Limnomedusae
本目共4科。
– Family Moerisiidae
• Tiaricodon
(四) Order Trachymedusae:
Agalma elegans Suborder Calysophorae :Family Diphyidae
– Diphyes – Muggiaea
§5.3 Class Scyphomedusae
一、Morphology
(一) 外部形态
Lappet Sense Organs: rhopalium, ocelli Oral arms: 附属物:感觉功能。 生殖下穴: Marginal Tentacles:solid or hollow
相关文档
最新文档