The army of arthropods slurped bits of organic material out of the muck, then ejected balls of it like so many wads of chewing tobacco. |
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In a study of 47 species of malacostracan arthropods, Becker found that most of the taxa were not heavily fouled. |
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More than half of the arthropods were spiders, followed by coleopterans, orthopterans, and homopterans. |
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The body fossil record of arthropods in the Chinle Formation is limited to beetle elytra and a few poorly preserved wings of orthopteran insects. |
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For instance, many arthropods have lost extensive metamerism but still have remnants in the form of repeated organs. |
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Recent evidence suggests that the compound eyes of myodocopid ostracods may be phylogentically non-homologous to those of other arthropods. |
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Centipedes or chilopods are part of a larger group of arthropods called the Myriapoda. |
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Many arthropods are also present including the horseshoe crab Mesolimulus and the crayfish Mecochirus. |
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These taxa together form a paraphyletic group at the base of the clade of biramous arthropods. |
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Within the large arthropods we found that birds consistently reduced numbers from all taxonomic classes. |
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Accordingly, hexapods are not monophyletic, and both Collembola and ectognathian insects evolved independently from crustacean-like arthropods. |
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Gut contents of Carboniferous arthropods, which include lycopod xylem elements and spores, are a tangible demonstration of phytophagy. |
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The eyes may have permitted comprehension of the world in the same fashion as the similar compound eyes of living arthropods. |
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As we watched, cockroaches, earwigs, isopods, and other small arthropods ran to escape the advancing waves of ants. |
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As in all arthropods, the eye surface had to be molted along with the rest of the hard exoskeleton. |
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In the complementary category, the protostomes, which includes annelids and arthropods, the blastopore develops into the mouth. |
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Most studies of the impact of bird predation on arthropods in agroecosystems have focused on particular pest species. |
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Over 45,000 arthropods were collected from 55 plants, dominated numerically by Acari and Thysanoptera. |
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Tuataras are primarily nocturnal predators of arthropods, especially those associated with sea bird colonies, and tree wetas. |
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To be useful, pesticides and repellents must work against not only mosquitoes but also other disease-transmitting arthropods. |
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Nematodes make up the second most diverse animal phylum, second only to the arthropods. |
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The trilobites comprise a major class-level clade of extinct marine arthropods characterized by calcareous, multisclerite, dorsal exoskeletons. |
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The living lobopods include the land-dwelling Peripatus, which has legs and a number of characteristics reminiscent of arthropods. |
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Studies of fouled arthropods include horseshoe crabs, isopods, stomatopods, lobsters, and true crabs. |
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The ecdysozoans are supposed to include arthropods, priapulids and nematodes. |
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It is of interest that a plant native to Eurasia would host such substantial numbers of phytophagous arthropods in North America. |
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It is the cuticle that suggests rotifers are close relatives of roundworms and arthropods. |
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Most of the arthropods consist of an infill of sparry calcite with uniform luminescence. |
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In contrast, arthropods such as the lobster possess distinct maxillipeds, pereopods, pleopods, and uropod. |
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Densities of predaceous arthropods were higher on fertilized than on unfertilized trees. |
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The femur-tibia feedback system of the stick insect is one of the best known motion feedback systems in arthropods. |
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Some arthropods, like the centipedes, millipedes, and insects, have legs with a single branch. |
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Clearly visible within the imprint were the remains of trilobites, extinct marine arthropods. |
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Both types of arthropods employ two short basal segments, coxa and trochanter, although the trochanter and femur are fused in some insects. |
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Bradoriids are small bivalved arthropods, historically considered to be the oldest members of the Ostracoda. |
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Once a year, though, when the birds molt, the tiny arthropods face life-or-death options. |
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In the complementary category of the protostomes, which includes annelids and arthropods, the blastopore develops into the mouth. |
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The effects at the population level, for the sake of simplicity, are assessed in arthropods. |
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Living among these early land plants were a diverse selection of arthropods, including spiders, mites, myriapods and collembolids. |
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At times they eat arthropods, seeds, and grain, but they are more carnivorous than crows. |
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This is in contrast to organisms such as annelids and arthropods, in which the main nerve cord is ventral. |
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In insects, as in all arthropods, the main nerve cord lies ventrally, rather than dorsally as in vertebrates. |
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Phytoseiid mites and heteropteran bugs are frequently part of the enemy complex of herbivorous arthropods in agroecosystems. |
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Carbamate pesticides generally have a high acute toxicity to arthropods but only a moderate environmental persistence. |
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The paper recorded sixty-five taxa that were represented by six species, and 38,980 ground-dwelling arthropods from both sites. |
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Whilst true arthropods, tardigrades and onychophorans are highly differentiated in form today, such was not always the case. |
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However, many ectoparasitic arthropods are more vagile than mallophagan lice, and may have better opportunities to come in contact with novel hosts. |
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Insects are mandibulate, not chelicerate arthropods, like spiders. |
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The Crustaceamorpha are arguably the most well known of the arthropods because of their contributions to aquatic, aerial, and terrestrial food webs. |
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The Ecdysozoa, all of which molt and lack motile locomotory cilia, include priapulids, kinorhynchs, nematodes, nematomorphs, tardigrades, onychophorans, and arthropods. |
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The hard parts may be mineralized, as in the shells of bivalves, or composed of organic material, such as the chitin that makes up the exoskeleton of arthropods. |
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All chelicerate arthropods have this special first set of modified legs. |
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Flies, crabs, and other arthropods have compound eyes in which many, sometimes hundreds, of individual ommatidia, or unit eyes, gather visual information. |
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However, their importance in elucidating the phylogeny of the Metazoa, particularly the arthropods, has recently increased interest in this group. |
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Insects are tracheate arthropods and employ direct transfer of respiratory gases to and from their sites of use and generation via the tracheal system. |
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Plant material accumulated on the pond bottom, creating anoxic conditions that favored the preservation of terrestrial arthropods such as the millipedes and arachnids. |
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When in coastal marshes, they are more omnivorous than most dabbling ducks, with mollusks, crustaceans, and arthropods making up nearly half of their diet. |
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Potentially damaging arthropods are common on landscape plants. |
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The earliest expression of Hox genes for these arthropods is in the already formed segmental anlage, in the presumptive position of the developing segment. |
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The article covers a probable impact of global changes on the distribution of bloodsucking arthropods as the vectors of inoculable disease agents. |
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This type of ornamentation is often found in crustaceans including Daphnia, many species of ostracodes, and other Cambrian bivalved arthropods such as Isoxys. |
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Most biologists are familiar with only a few of the approximately 40 extant animal phyla such as annelids, arthropods, molluscs, echinoderms and chordates. |
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Instead, some pseudocoelomate animals, such as priapulids and nematodes, appear to be more closely related to arthropods, in a group termed Ecdysozoa. |
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To measure food intake, we recorded mass of arthropods and fruit and reweighed the remaining food the following day to measure amount of food eaten during that 24-hour period. |
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It is particularly common amongst arthropods and rotifers, and can also be found in some species of fish, amphibians, birds, and reptiles, but not in mammals. |
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The first tetrapods, or land-living vertebrates, appeared during the Devonian, as did the first terrestrial arthropods, including wingless insects and the earliest arachnids. |
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Arthropods smaller than 1 mm, ants, isopods, and arthropods with aposematic colorations were excluded from the counts because these are rarely consumed by insectivorous birds. |
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By the same reasoning, putative lobopods in the Sirius Passet biota and putative deuterostomes in the Chengiang biota are better interpreted as arthropods. |
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These animals include rodents, passerine birds and arthropods. |
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Cooperative breeding and eusociality are taxonomically widespread, occurring in social arthropods, colonial invertebrates, mammals, birds, fish, and bacteria. |
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Preserved sediments record deposition in a periglacial to ice-margin lake that contains one of the earliest assemblages of freshwater arthropods from Gondwana. |
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Basically what is available in the fossil record are only hard parts-bones and teeth for vertebrates, and shells for mollusks, arthropods and echinoderms. |
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These metrics have been used in studies of protists, vertebrates, and arthropods. |
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Fish, arthropods, amphibians, anapsids, synapsids, euryapsids and diapsids all evolved during the Paleozoic. |
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Creatures like algae evolved, but the most ubiquitous of that period were the armored arthropods, like trilobites. |
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More importantly, the first arthropods went ashore to colonize the empty continent of Gondwana. |
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About 500 million years ago, plants and fungi colonised the land and were soon followed by arthropods and other animals. |
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Moonrats are a lowland forest species which feed primarily on worms and arthropods. |
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I suggest that several species of nauplioids hybridized with representatives of several groups of arthropods to give them nauplius larvae. |
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Fossil evidence suggests that euthycarcinoids, an extinct group of arthropods, produced at least some of the Protichnites. |
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Anomalocaris was an early marine predator, among the various arthropods of the time. |
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Protichnites were the trackways of arthropods that walked Cambrian beaches. |
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Many fossils are found within the rocks, including early fishes, arthropods and plants. |
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Crustaceans, one of the four great modern groups of arthropods, are very rare throughout the Cambrian. |
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Invertebrate paleontology deals with fossils of invertebrates such as molluscs, arthropods, annelid worms and echinoderms. |
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Pests include viruses, bacteria, and fungi as well as arthropods and gastropods. |
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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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Two smaller phyla, the Onychophora and Tardigrada, are close relatives of the arthropods and share these traits. |
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Like other arthropods, crustaceans have an exoskeleton, which they moult to grow. |
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Their diversity when they do appear, however, shows that these arthropods were both well developed and numerous. |
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Terrestrial life in the Permian included diverse plants, fungi, arthropods, and various types of tetrapods. |
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Other zooplankton include cnidarians, ctenophores, chaetognaths, molluscs, arthropods, urochordates, and annelids such as polychaetes. |
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Like most arthropods, lobsters must moult to grow, which leaves them vulnerable. |
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Although lobsters are largely bilaterally symmetrical like most other arthropods, some genera possess unequal, specialised claws. |
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The preferred arthropods are the millipedes Glomeris marginata and Tachypodoiulus niger as well as the ground beetle Carabus nemoralis. |
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The diet of Fringillidae nestlings includes a varying amount of small arthropods. |
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It is replete with the mollusks, the vertebrates, the echinoderms, the brachiopods and some groups of arthropods. |
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It is estimated that there are at least 80,000 arthropods, inclusive of over 600 species of butterflies. |
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Flaviviruses are transmitted by arthropods, and louping ill virus is transmitted by ticks. |
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It includes chapters on the biology of protozoa, trematodes and leeches, cestodes, nematodes and acanthocephalans, and arthropods. |
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Parasitic arthropods of sympatric meadow voles and white-footed mice at Fort Detrick, Maryland. |
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Ovipositors, amnions and eggshell architecture in the diversification of terrestrial arthropods. |
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The largest part of the book focuses on 22 medically important arthropods, mostly belonging to the insect and arachnid classes. |
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Retreats of araneids in higher strata do not play a significant role for hibernation of arthropods other than spiders. |
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The researchers looked at the anatomical and genetic differences between living arthropods to establish past rates of evolution. |
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Herein, I present such an analysis for a selected group of arthropods occurring on desert sand dunes. |
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Among the arthropods, some animals are more closely related to one another than to others. |
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Scientists had thought that early arthropods had simpler brains like those of tiny freshwater crustaceans called branchiopods. |
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Kutcher uses his knowledge of how arthropods respond to heat, light, wind, and texture to make them do what he wants. |
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Laboulbeniales is a large group of ascomycete fungi which complete their entire lifecycle on living arthropods. |
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Predaceous arthropods, such as ladybeetles, syrphid flies, lacewings, and spiders, feed on ACP, as does a parasitoid from Asia. |
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The primary hosts for Rickettsia species are arthropods that can also act as disease vectors for humans and other vertebrates. |
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Mosquitoes, sand flies, ticks, mites, and other biting arthropods transmit pathogens that cause some of the most devastating diseases. |
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Besides other arthropods like caterpillars, sawflies, ants, and beetles, various spider families construct shelters on plants. |
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Mites, or taxonomically speaking the Acari, represent a diverse and variable group of arthropods. |
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Springtails belong to the smallest group of hexapodous arthropods and are the most diverse and widespread among. |
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The GM portions of the beet fields also had fewer butterflies, but more springtails, which are small arthropods that feed on dead plants. |
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Ectoparasites generally are arthropods that live on the outside of other animals. |
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The quick keys to the identification of protozoans, helminths, and arthropods are helpful for distinguishing pseudoparasites from harmful ones. |
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The sea spiders, or pycnogonids, arise from an ancient lineage of arthropods and look like their sister group of terrestrial spiders. |
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Recent hemerobiids are terrestrial insects and both adults and larvae prey on small soft-bodied arthropods. |
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Frequency of arthropods in stomachs of tropical hummingbirds. |
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Animal inclusions are usually small invertebrates, predominantly arthropods such as insects and spiders, and only extremely rarely a vertebrate such as a small lizard. |
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Various noninsect arthropods are eaten, as are molluscs and crustaceans where available, earthworms, and even vertebrates such as lizards and frogs. |
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Not surprisingly, in the animalia the most studied groups are birds and mammals, whereas fishes and arthropods are the least studied animals groups. |
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Among these outcrops, 20 have yielded biological inclusions comprising the oldest representatives of several recent families of terrestrial arthropods. |
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The study of invertebrates has also benefited law enforcement, as arthropods, and especially insects, were discovered to be a source of information for forensic investigators. |
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They are now classified into over 30 phyla, from simple organisms such as sea sponges and flatworms to complex animals such as arthropods and molluscs. |
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Invertebrates, namely molluscs and arthropods, dominated the oceans. |
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This contrasts with most other early Cambrian arthropods, which fed messily by shovelling anything they could get their feeding appendages on into their mouths. |
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The other arthropods were Arachnida, Chilopoda and Diplopoda. |
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The first animals to venture onto dry land were the arthropods. |
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Distribution patterns of predatory arthropods, ulidiid eggs, and larvae can be analyzed by Taylor's Power Law, Iwao's Patchiness Regression, and the Index of Dispersion. |
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Antifreeze and ice nucleator proteins in terrestrial arthropods. |
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