Well documented in vertebrates, this so-called selfish herd effect has now been reported for an invertebrate, the fiddler crab. |
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In other cases it's been shown that veterinary wormers can kill invertebrate insects that are really critical for dung removal. |
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Most other closely related wrasses utilize a combination of suction and biting to take less elusive invertebrate prey items. |
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Anhydrobiosis is a state of suspended animation certain invertebrate animals enter in response to severe drought. |
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The examples discussed, which are myriad, cover a wide set of invertebrate and vertebrate animals. |
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The distribution, water chemistry, ecology, hydrology, limnology, and invertebrate and amphibian fauna of vernal ponds have been investigated. |
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Land crabs are nocturnal scavengers that climb trees, enter holes and are the invertebrate ecological equivalent of rats. |
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It is observed in a variety of systems, from invertebrate neuromuscular junctions to neocortical synapses. |
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Most studies of invertebrate larval metamorphosis have been performed with species that are sedentary or sessile as adults. |
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Alternatively, competent larvae of many sessile invertebrate species do not progress toward metamorphosis if stimulatory cues are absent. |
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Several invertebrate groups that are conspicuous deep sea benthos are rare or absent from vent communities. |
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In addition any invertebrate fossils or trace fossils will be noted or collected if any new examples come to hand. |
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At the end of his dive, woe betide any luckless invertebrate in the path of his trawl net. |
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This marine invertebrate appears unremarkable and similar to a variety of moss-like sea creature. |
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The senior students were keen to observe the invertebrate marine animals, such as starfish, urchins and crustaceans. |
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Indeed, during this time most of the various invertebrate and vertebrate phyla evolved. |
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In addition to abundant crinoids, a diverse invertebrate and vertebrate fauna is contained within the Muldraugh. |
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Yet a new study shows that some invertebrate carnivores choose their prey carefully, day by day. |
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Technically an invertebrate, amphioxus is classified in subphylum Protochordata, phylum Chordata. |
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Formica rufa is an aggressive ant species that preys on a range of invertebrate insects as well as collecting honeydew produced by aphids. |
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Echinoids are among the most conspicuous and diverse constituents of the Upper Cretaceous and Paleocene marine invertebrate fauna of Argentina. |
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Surely a more penetrating expedition into invertebrate diversity was required to dig up the precursors of the chordate characteristics. |
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A substantial fraction of vertebrate and invertebrate genomes is composed of mobile elements and their derivatives. |
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These levels of divergence are greater than those reported previously for congeneric species in diverse invertebrate taxa, including crustaceans. |
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Vertebrate and invertebrate animals, land plants, and protists are all represented as fossils in the Solnhofen Limestone. |
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Sea cucumbers, invertebrate animals of the phylum Echinodermata, might hold out some hope for the afflicted. |
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Serotonin has been demonstrated to enhance excitability and spike output in vertebrate and invertebrate neurons. |
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He then told us that these first life-forms evolved into bacteria and then into the invertebrate animals, as well as plants. |
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Most endophytes produce N-rich alkaloid compounds that deter or poison a range of vertebrate and invertebrate herbivores. |
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Echinoderms are considered the invertebrate group most closely related to the vertebrates. |
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While ubiquitous among vertebrates, it occurs less frequently in invertebrate phyla. |
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Minerals, mushrooms, higher and lower plants, invertebrate and vertebrate animals make up the richest museum collection on the Balkan Peninsula. |
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Despite their overall abundance and cosmopolitan distribution, the Tardigrada have been relatively neglected by invertebrate zoologists. |
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Shallow marine invertebrate fossils occur throughout the formation, but are mainly concentrated in four broad intervals. |
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Marine rocks commonly contain plant fossils but they are outnumbered by more common and spectacular shelly invertebrate fossils. |
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Grazing by large herbivores does not favour cyanogenesis, but some invertebrate herbivory may do so. |
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Generally, the Arctic invertebrate fauna is depauperate, and some groups are usually absent. |
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Within 48 hours, we washed the samples, removing inorganic material and invertebrate cases and exuviae, and sieved them through 1 mm mesh. |
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Notochords are the axial skeleton of invertebrate chordates, of agnathan fish, and of amphibian tadpoles. |
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He made many contributions to knowledge of the vertebrate and invertebrate fossils of the West Coast. |
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Throughout the Permian period the numbers of invertebrate species tends to decrease. |
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These conditions support a rich diversity of invertebrate life and important game fisheries, such as brown trout, brook lamprey, salmon, crayfish, and otter. |
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There resulted, he proposed, eleven general grades with man at the apex and the zoophytes at the bottom, the zoophytes being invertebrate animals resembling plants. |
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He contributed an immense amount of research in vertebrate and invertebrate zoology and paleontology, and also wrote and lectured on the history of science. |
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It has profuse fish and invertebrate life, including groupers, emperor snappers, longhorn boxfish, sweetlips and large Discodoris boholensis nudibranchs. |
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Melbourne Zoo has a long history of breeding stick insects and currently rears five separate species as well as dozens of other invertebrate species. |
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In 1967, embryology, invertebrate zoology, neurobiology, and physiology were the major summer courses of the Marine Biological Laboratory at Woods Hole. |
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Microbes, invertebrate fruit consumers, and vertebrate dispersers can thus be viewed as competitors for access to a rich but transient nutritional substrate. |
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Previous studies examined the genetic determinants for arbovirus development within the invertebrate vector, but not transmission to a vertebrate host. |
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The meiofauna, as the tiny invertebrate animals are called, are equipped with all sorts of odd appendages and body shapes that are well adapted to this unique environment. |
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An informative monitoring technique in ecological immunology is to quantify lytic activity over time, which measures the status of the invertebrate immune system. |
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The invertebrate fauna includes many planktonic forms, particularly jellyfish and the stemless crinoid Saccoma, and also nektonic organisms such as cephalopods. |
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Amphioxus is the closest living invertebrate relative of the vertebrates, and is key to understanding the evolution of vertebrates from an invertebrate ancestor. |
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They are a common adaptation in organisms that use internal fertilization, and have arisen multiple times in a number of vertebrate and invertebrate lineages. |
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As river fish and their invertebrate prey, such as chironomids and caddis larvae, have evolved together, each has influenced the behaviour of the other. |
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Odorant-binding proteins are present in the olfactory systems of both vertebrate and invertebrate animals, but these gene families are not related. |
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The transmitter is octopamine, common in invertebrate systems. |
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Once vertebrate and invertebrate eyes were established hundreds of millions of years ago, evolution continued borrowing genes and fine-tuning them for new situations. |
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The sea is the habitat of over 1,000 invertebrate species, and 200 soft and hard corals. |
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Eurypterids, giant ravenous sea scorpions, and other invertebrate predators hunted fishes. |
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It supports a rich invertebrate fauna, mainly consisting of polychaete worms, mollusks, and brachyuran crabs. |
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This monster from the deep, along with its cousin the Colossal Squid, is the largest invertebrate in the world. |
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Related to slugs and snails, this monster from the deep, along with its cousin the Colossal Squid, is the largest invertebrate in the world. |
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Octopodes have the largest brains of any other invertebrate, they can learn by trial and error and remember what works. |
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We have undertaken to study the effect of pentachlorophenol on invertebrate and vertebrate cells in vitro and in vivo. |
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Three guilds comprised 19 species of ground-foraging birds and included 4,614 invertebrate feeders, 906 granivores, and 125 insectivores. |
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Researchers from Montana State University found that the invertebrate fauna was particularly rich on the island. |
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The local flora are dominated by heather moor, and there are nationally important invertebrate populations on the surrounding sea bed. |
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The first invertebrate in which a neuron cell was identified was the medicinal leech, Hirudo medicinalis. |
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Neurons have been identified in a wide range of invertebrate species, including annelids, molluscs, nematodes and arthropods. |
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The relationships among ophiuroids and all other echinoderms provide an enduring problem in invertebrate evolution. |
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Some species are effective at controlling hair algae, and they make good additions to an invertebrate tank. |
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Most involve studying specializations of particular animal groups, such as phycology, invertebrate zoology and ichthyology. |
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Another resident invertebrate of note is Atypus affinis, the only British species of purseweb spider. |
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Although they lacked a true spine, they possessed notochords which allowed them to be more agile than their invertebrate counterparts. |
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For example, in Britain it has been estimated that various types of rotting wood are home to over 1700 species of invertebrate. |
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However as invertebrate life evolved in an aquatic habitat most have little or no specialisation for respiration in water. |
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It is home to 70 hard coral species, 36 soft coral species, 500 species of fish and hundreds of invertebrate species. |
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The procephalic lobe is that part of the head of an invertebrate animal which is in front of the mouth. |
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The longest established invertebrate domesticates are the honey bee and the silkworm. |
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Many freshwater fish and invertebrate communities around the world show a pattern of specialisation into upland or lowland river habitats. |
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Instead, they resemble the living invertebrate called amphioxus, a passive filter-feeding marine animal. |
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Nearly all of these involve caudal luring whereby tail motions mimic invertebrate larvae and serve as lures, typically for lacertilian prey. |
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Influence of the predatory backswimmer Notonecta maculata, on invertebrate community structure. |
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Turkey poult feeding activity, invertebrate abundance, and vegetation structure. |
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In addition, a substantial number of plant, vertebrate, and invertebrate rhabdoviruses have not been classified. |
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In the Henneguya case, the spores enter a second host, most likely an invertebrate, in the spawning stream. |
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Many invertebrate taxa have a greater number and variety of species than the entire subphylum of Vertebrata. |
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Carbonate hardgrounds were thus very common, along with calcitic ooids, calcitic cements, and invertebrate faunas with dominantly calcitic skeletons. |
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Also imaged were a variety of invertebrate plankters, ranging from copepods and larvaceans to ctenophores and medusae to invertebrate larval types, such as echinoderm pluteus. |
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What little energy is available in the bathypelagic zone filters from above in the form of detritus, faecal material, and the occasional invertebrate or mesopelagic fish. |
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By far the largest number of described invertebrate species are insects. |
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Deep sea benthic fishes are more likely to associate with canyons or rock outcroppings among the plains, where invertebrate communities are established. |
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A noteworthy feature of Paleozoic life is the sudden appearance of nearly all of the invertebrate animal phyla in great abundance at the beginning of the Cambrian. |
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Eyes appear in the bilaterally symmetrical animals in the protostome invertebrate branch, including the Phylum Arthropoda, Annelida, and Mollusca. |
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Brittle stars are a moderately popular invertebrate in fishkeeping. |
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Values above zero indicate greater invertebrate densities in the exclosures, suggesting that shorebirds removed invertebrates from outside the exclosure treatment. |
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The invertebrate is sucked into the bladder, where it is digested. |
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The population dynamics of microparasites and their invertebrate hosts. |
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In addition, there are many invertebrate species, including sponge, jellyfish, anemone, crab, mollusc, sea urchin, starfish, sea cucumber and coral. |
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Resistance, resilience, and patchiness of invertebrate assemblages in native tussock and pasture streams in New Zealand after a hydrological disturbance. |
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In particular, immersion or injection with fluorochrome dye, such as calcein, has been effectively used to batch-tag a range of invertebrate larvae, including molluscs. |
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Maerl beds provide a complex habitat for a wide range of taxa with a variety of niches that support high associated invertebrate and algal biodiversity. |
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For example, the addition of a moderate amount of nutrients to a river over the course of several years resulted in increases in invertebrate richness, abundance, and biomass. |
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Over the next 400 million years or so, invertebrate diversity showed little overall trend and vertebrate diversity shows an overall exponential trend. |
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We collected invertebrate samples from 10 NWSG fields and 10 fields of tall fescue during the brooding season across Tennessee using a terrestrial vacuum sampler. |
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