Crustacean Anatomy, Diversity and Physiology 0.0 / 5 ? zoologyOrganismal DiveristyUniversityNone Created by: Omar-uniCreated on: 05-01-20 22:22 What is meant by Crustacean Bauplan? Its Bodyplan 1 of 43 What is the Crustacean Bauplan? Head (Cephalon) body (trunk) , Thorax and abdomen 2 of 43 What are typical crustacean appendages like? Biramous appendages 3 of 43 How many pairs of appendages does the head always have? 5 Pairs 4 of 43 What are the names of the 5 pairs of appendages? 1st and 2nd Antennae, Mandible, 1st and 2nd Maxilla 5 of 43 When are appendages called Maxillipeds? When 1-3 anterior thoracic segments (Thoracomeres) are fused to cephalon 6 of 43 What is the Abdomen sometimes called? Pleon 7 of 43 What are the segments of the abdomen called? Pleomeres 8 of 43 What are Pleomeres followed by? The Telson 9 of 43 What is only found on Malacostracans? Appendages on the abdomen 10 of 43 What is the last pair of appendages called? Uropods 11 of 43 What is the first larval stage of marine crustaceans called? Nauplius 12 of 43 What does Decapod mean? 10-legged 13 of 43 Why do female crabs have a larger abdomen? Because they brood the offspring 14 of 43 How do Crustaceans feed? Filter feed using thoracic limbs, macrophage diets, herbivory, detritivore and predatory lifestyles, some parasitic lifestyles 15 of 43 What does the basic digestive system of a crustacean consist of? A foregut, hindgut and midgut 16 of 43 What do Malacostracans have as a respiratory pigment? Hemocyanin 17 of 43 Most gills of crustaceans are derived from what? Thoracic Epipodites 18 of 43 How many types of crustacean gills are there? 3 19 of 43 What are the 3 types of crustacean limbs? Dendrobranchiate,Trichobranchiate and Phyllobranchiate 20 of 43 What is meant by ' Crustaceans are always Ammonotellic? Always produce Ammonia 21 of 43 What does the Protocerebrum consist of? Nerves from the eye 22 of 43 What does the Deuterocerebrum consist of? Nerves from the first antennae 23 of 43 What does the Tritocerebrum consist of? Nerves from 2nd antennae 24 of 43 What is Ecdysis? Moulting 25 of 43 What is Ecdysis promoted by? The secretion of steroid hormones- Ecdysteroids 26 of 43 Which organ secretes Ecdysteroids? The Y- Organ 27 of 43 What is Ecdysteroid production inhibited by? A moulting inhibiting hormone 28 of 43 What is the moulting inhibiting hormone produced by? Neurosecretory neurones in the eye stalk 29 of 43 What hormones does the X-organ produce? Moulting inhibiting, blood glucose control, chromatophore and retinal pigment 30 of 43 What does Pericardial mean? Around the heart 31 of 43 What hormones do the Pericardial organs secrete? Neuro-hormones controlling the heart rate and gill ventilation 32 of 43 Are Crustaceans Dioeceous or Hermaphroditic? Most dioecious 33 of 43 What is crustacean sperm deposited as? Spermatophores 34 of 43 Where are spermatophores stored by the female? In the Seminal Receptacle 35 of 43 What is the name of the larva that's characteristic to Crustaceans? Nauplius 36 of 43 What is a crabs first larva called? A Zoea 37 of 43 What does a Zoea then turn to? A Megalopa 38 of 43 What happens before the Zoea turns to a Megalopa? The Zoea Moults 4 times 39 of 43 Where does the Megalopa habituate? Benthic depths 40 of 43 What is the final stage of development? The Benthic megelopa metamorphoses to a small crab 41 of 43 What does the Nauplius larva of a Free living barnacles moult to? A Cypris 42 of 43 How many pairs of thoracic limbs does a cyprid larva have? 6 43 of 43
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