Other invertebrates

Xem 1-14 trên 14 kết quả Other invertebrates
  • Therea rem il[ionso f differenst pecieos f animailn the world.S omea nimatsli,k et he bluew halea, rev eryb ig. Othersa res os mallt hatw e almosct an'ts eet hem. Thesea nimalsa ll havev eryd ifferenlti fe cycles. AnimaGl roups Scientists put animals into groups. The animals in each group are the same in many ways, and they often have very similar life cycles. The two biggest animal groups are invertebrates and vertebrates.

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  • Insects are associated with a broad diversity of microorganisms in a variety of symbiotic relationships including: commensalism, mutualism, and parasitism. Internal mutualistic organisms are critical to the survival of the host, such as symbionts, which are found in mycetocytes and mycetomes of many invertebrate species. Although mutualistic organisms such as the protists associated with termites may be abundant in their insect hosts, they are not by definition pathogenic to the host insect.

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  • Stormwater runoff reduces water clarity and lowers the value of lakeside properties. Florida Friendly landscaping helps reduce stormwater from entering the lake by helping it soak into the ground, preventing damage to lake water quality and loss of property value. Examples of improvements HOAs might find they need are: mulching a pathway, planting ground covers, establishing a buffer zone of shrubs and other plants along the shore of their retention pond, diverting stormwater water away from a driveway or building, and pumping the septic system regularly.

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  • Members of the bone morphogenetic protein (BMP) family of ligands have been identified in a variety of vertebrate and invertebrate species and have been shown to play an essential role in a range of biological processes, including mesodermal patterning and organ development, as well as the formation of bone and cartilage.

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  • The literature in book form is a veritable cornucopia of analytical information covering both basic and applied aspects of invertebrate pathology. Atlases and manuals are available that enable the identification of a wide range of insect pathogens. Some of these have also included a limited number of techniques to be used predominantly for preparing entomopathogens for isolation and identification. A large number of techniques for the isolation, identifi- cation, production and evaluation of insect pathogens are scattered throughout the literature.

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  • Estuaries are areas of high productivity, crucial in the life histories of many fish, invertebrates, and birds, for example, and the sustainability of estuarine biodiversity is vital to the ecological and economic health of coastal regions. On the other hand, estuarine ecosystems are exposed to toxic anthropogenic effluents transported by rivers from remote and nearby conurbations and industrial and agricultural concerns.

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  • Early attempts to look at the link between air pollution and wildlife focused mainly on the so- called "charismatic megafauna", ie on large and "colourful" species of animals. In fact, the most widely affected species - in terms of both number of species suffering damage from air pollution and also sensitivity of individual species to pollution - are amongst the lower life forms. In particular, lichens, bryophytes, fungi, and soft-bodied aquatic invertebrates are likely to be at risk.

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  • To facilitate feeding, certain hematophagous invertebrates possess inhibi-tors of collagen-induced platelet aggregation in their saliva. However, their mechanisms of action have not been fully elucidated. Here, we describe two major salivary proteins, triplatin-1 and -2, from the assassin bug, Tria-toma infestans, which inhibited platelet aggregation induced by collagen but not by other agents including ADP, arachidonic acid, U46619 and thrombin.

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  • Only about 20% of all extinctions occurred during mass extinctions. The other 80% are known as background extinctions. For most individual species, scientists don’t know the precise cause of extinction. But scientists can gather clues in the broad patterns of extinctions formed by thousands of species. In 2008, Jonathan Payne and Seth Finnegan, two paleontologists at Stanford Uni- versity, surveyed 227,229 fossils of marine invertebrates from about 520 million years ago to 20 million years ago.

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  • On the basis of a partial N-terminal sequence, Jolle`s and Jolle`s [Jolle`s, J., & Jolle`s, P. (1975)Eur. J. Biochem.54, 19–23] previously proposed that the lysozyme from the starfishAsterias rubensrepresents a new form of lysozyme, called typei(invertebrate) lysozyme. Indeed, it differed from both the typesc(chicken) and g(goose) known in other animals, as well as from plant and phage lysozymes. Recently, several proteins belonging to the same family have been isolated from protostomes. Here we report the com-plete mature protein sequence and cDNA sequence of the lysozyme from Asterias. ...

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  • f\uring the last few (pre-war) years, and even before the memoir on lJ ilre Jurassic Invertebrate faunas of Milne Landr) was completed, there came to me for description various other new collections of ammonites nites and associatedfo ssils,a ll gatheredd uring the progresso f the East Greenlande xpeditionsw orking under the leadershipo f Dr' Lauge Koch. The members of the various expeditions who collected this material were Mr. A. Rosenkrantz, Dr. H. Aldinger and Mr. Siive-Siiderbergh, Dr. Wolf Maync and MessrsH. . Stauber and W. Bierther.

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  • Thefushi tarazu factor 1 (FTZ-F1) nuclear receptor sub-family comprises orphan receptors with crucial roles in development and sexual differentiation in vertebrates and invertebrates. We describe the structure and functional properties of an FTZ-F1 from the platyhelminth parasite of humans,Schistosoma mansoni, the first receptor from this family tobe characterized inaLophotrochozoan. It contains awell conservedDNA-binding domain (55–63%identity to other family members) and a poorly conserved ligand-binding domain (20% identity to that of zebrafish FF1a)....

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  • Chapter 33 introduce to invertebrates. This chapter describe how a sponge feeds and digests its food, list the characteristics of the phylum Cnidaria that distinguish it from other animal phyla, list the four classes of Cnidaria and distinguish among them based on life cycle morphology, list the characteristics of Platyhelminthes and distinguish among the four classes, describe the features of molluscs and distinguish among the four classes,...

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