Viruses of Invertebrates

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Evolutionary change in the prokaryotes gave rise to metabolic diversity and the evolutionary capacity to ex- plore and colonize every conceivable environment on Earth. Euglena use photosynthesis for energy although they can eat solid food (like animals) if they are kept in the darkness. SUBCLASS OCTOCORALLIA (= ALCYONARIA): Octocorals. Evolutionarily speaking, after torsion, the anus lay in front, and the animal could no longer grow in length easily.

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The Sound of a Wild Snail Eating

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Dragonflies and Damselflies (Odonata) of the United States. Compound eyes are lacking altogether in many crus- tacean taxa (e.g., Copepoda, Mystacocarida, Cephalo- carida, Tantulocarida, Pentastomida, Remipedia, and some Ostracoda). A single specimen of Spheciospongia vesparia from Florida was found to have over 16,000 alphaeid shrimps living in it, and a study from the Gulf of Cali- fornia found nearly 100 different species of plants and animals in a 15 × 15-cm piece of Geodia mesotriaena.

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Advances in Polychaete Research (Developments in

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Although in nature dicyemids appear to be obliga- torily associated with cephalopods, they have been suc- 212 CHAPTER SEVEN Figure 7.2 A young vermiform embryo develops from an axoblast within the axial cell of the vermiform adult Dicyema (Rhombozoa). *A constancy in the number of cells (in a given organ, or in the entire body of an animal) is called eutely and is a common feature of many microscopic and near-microscopic organisms. It then everts the stomach and be- gins secreting digestive enzymes.

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Invertebrate Zoology: Laboratory Workbook

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Perhaps the most familiar of these dangerous scorpions are two species that occur in the American Southwest: the bark scorpion (Centruroides ex- ilicauda) and the stripe-tailed scorpion (Vaejovis spinigerus). Thus, myriapod seg- mental ganglia receive contributions from more widely distributed neurons. UNCORRECTED PAGE PROOFS PHYLUM ARTHROPODA: THE CRUSTACEA 39UNCORRECTED PAGE PROOFS Figure 16.20 Anatomy and diversity in the Ostracoda. (A) Anatomy of Sclerocypris (Podocopa). (B) Anatomy of Thaumatoconcha (Myo-docopa). (C) Internal view of Metapolycope (Myodocopa), left valve removed. (D) The highly ornate Eusarsiella (Myodocopa); side view and edge view, showing the ornate shell. (E) Examples of genera from the major ostracod groups (scale bar = 1.0 mm). (a) Vargula (Myodocopa, Myodocopida). (b) Eusarsiella (Myodocopa, Myodocopida). (c) Polycope (Myodocopa, Halocyprida). (d) Cytherelloidea (Podo- copa, Platycopida). (e) Propontocypris (Podocopa, Podocopida). (f) Macrocypris (Podocopa, Podo- copida). (g) Saipanetta (Podocopa, Podocopida). (h) Neonesidea (Podocopa, Podocopida). (i) Triebelina (Podocopa, Podocopida). (j) Candona (Podocopa, Podocopida). (k) Ilyocypris (Podocopa, Podocopida). (l) Cyprinotus (Podocopa, Podo- copida). (m) Potamocypris (Podocopa, Podocopida). (n) Hemicytherura (Podocopa, Podocopida). (o) Acanthocythereis (Podocopa, Podocopida). (p) Celtia (Podocopa, Podocopida). (q) Limno- cythere (Podocopa, Podocopida). (r) Sahnicythere (Podocopa, Podocopida). (s) Darwinula (Podocopa, Podocopida).

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A Functional Biology of Free-Living Protozoa (Functional

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Antje Bierschenk (PhD) Impacts of human land use practices on riverine, estuarine and marine ecosystems Effenberger, M., Diehl, S., Gerth, M., & Matthaei, C. It doesn’t concern people, so what practical uses does it have? Journal of Experimental Zoology 177:319-330. Cheng (eds.), Comparative Pathobiology, Vol. 2, Systematics of the Microsporida. These remarkable anemones capture prey directly with the oral disc, which can envelop crustaceans and small fish- es, rather like a fisherman’s cast-net (Figures 8.26B–E).

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Decapod Crustacean Phylogenetics (Crustacean Issues)

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Cephalized, with a central nervous system com- prising an anterior cerebral ganglion and (usually) longitudinal nerve cords connected by transverse commissures (ladder-like nervous system) 6. Ever wonder what the difference between a frog and a toad was? Prey swimming within reach are detected (probably by vibration receptors) and then captured by a quick movement of the head while the rest of the body remains firmly attached to the substratum.

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Microscopic Anatomy of Invertebrates, Chelicerate Arthropoda

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CLASS ADENOPHOREA (= APHASMIDA): (Figures 12.15A,C, E,G). Members of this class are exclusively polypoid. The tentacles of most anemones and jellyfish usually serve both purposes, and the defense polyps (dactylozooids) of hydroid colonies often aid in feeding. Eaten raw, however, mata malu causes death and is a traditional device in Samoan suicide. Rare, Declining, and Poorly Known Butterflies and Moths (Lepidoptera) of Forests and Woodlands in the Eastern United States.

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A Course in Invertebrate Zoology a Guide to the Dissection

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Ants, bees, wasps, sawflies, and their relatives are all active insects with a tendency to form polymorphic social communities. Kinorhynchs also periodi- cally shed their cuticle, but whether or not it is mediated by the hormone ecdysone (as it is in arthropods) is not yet known. Motile setal-net feeders, like many larger planktonic crustaceans and certain benthic crustaceans (e.g., porcelain crabs), may have modified appendages that generate a current across the feeding appendages that bear the capture setae.

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Protozoa: A hand written note

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From ante- rior to posterior, these are the antennules (first anten- nae), antennae (second antennae), mandibles, maxil- lules (first maxillae), and maxillae (second maxillae). Say: Everybody point to one of your joints.) The name of these invertebrates … regions) with which invertebrates would be found there. 4 Invertebrates: Our Many Spineless Friends Math: Graph the percentage of invertebrates are in each … Invertebrates, No Backbone, No Problem - … Web supplement for Invertebrates, No Backbone, No Problem Invertebrate Web supplement for Invertebrates, No Backbone, No Problem Fanjun Web supplement for Invertebrates, No Backbone … supplement for Invertebrates, No Backbone, No Problem Invertebrates and Vertebrates Web supplement for Invertebrates, No Backbone, No Problem Invertebrates Homepage Web supplement for Invertebrates, No Backbone, No Problem Audubon Web supplement for Invertebrates, No Backbone … 2006 Exploring Ancient Coral Gardens - No Escape - … reproductive strategy used by benthic seamount species.

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Aquatic Invasions in the Black, Caspian, and Mediterranean

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The rules governing the nomenclature and classification of plants and fungi are contained in the International Code of Botanical Nomenclature, maintained by the International Association for Plant Taxonomy. Some work suggests that tapeworms are unable to take in large molecules and thus rely to a con- siderable extent on the digestive processes of their hosts and the secretion of enzymes outside their bodies to chemically reduce the size of potential nutrient material. Inverse expansion buttons ( ) indicate records with multimedia (typically, images).

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