Tan, Milton - University of Delaware
... invertebrates such as insects, the earth would be devoid of higher life (Wilson 1987). In insects, there are three main feeding guilds: scavengers, herbivores, and carnivores (Grissell 2001). There are three main types of carnivores, or “natural enemies” to herbivores: predators, parasites, and “par ...
... invertebrates such as insects, the earth would be devoid of higher life (Wilson 1987). In insects, there are three main feeding guilds: scavengers, herbivores, and carnivores (Grissell 2001). There are three main types of carnivores, or “natural enemies” to herbivores: predators, parasites, and “par ...
Intra- and interspecific competition among helminth parasites
... the need to pass through a fish host (abbreviated cycle). This strategy is preferentially adopted when the opportunities of transmission are limited (Poulin, 2003; Lagrue and Poulin, 2007), but could also be adaptive when sharing an intermediate host with other parasites species. If the co-occurring ...
... the need to pass through a fish host (abbreviated cycle). This strategy is preferentially adopted when the opportunities of transmission are limited (Poulin, 2003; Lagrue and Poulin, 2007), but could also be adaptive when sharing an intermediate host with other parasites species. If the co-occurring ...
Sound production and chorusing behaviour in larvae of Icosium
... reduced survival of larvae. Rose [15] reported that when M. scutellatus larvae density was high, particularly in earlier instar stages, cannibalism was the cause of considerably elevated mortality. The mortality caused by nonspecific bites was observed also in M. alternatus [11]. During the manipula ...
... reduced survival of larvae. Rose [15] reported that when M. scutellatus larvae density was high, particularly in earlier instar stages, cannibalism was the cause of considerably elevated mortality. The mortality caused by nonspecific bites was observed also in M. alternatus [11]. During the manipula ...
Is Infectious Disease Just Another Type of Predator
... (Grover 1995; Holt et al. 2003; Begon, chapter 1, this volume) or multiple nutrients provided within the tissues of a host/prey resource (Smith and Holt 1996; Sterner and Elser 2002), influence the ability of the parasite or predator to persist? In the separate-resource case, different resource spec ...
... (Grover 1995; Holt et al. 2003; Begon, chapter 1, this volume) or multiple nutrients provided within the tissues of a host/prey resource (Smith and Holt 1996; Sterner and Elser 2002), influence the ability of the parasite or predator to persist? In the separate-resource case, different resource spec ...
Entrainment and Impingement Studies: What you need to know about fishes
... Something about their densities and habitats to assess where larvae are coming from (e.g. Monitor mudflat and tidal creek fishes like blennies or gobies in estuaries) Recent results from three estuaries in southern California provide examples of how different tidal habitats are sampled. Here are som ...
... Something about their densities and habitats to assess where larvae are coming from (e.g. Monitor mudflat and tidal creek fishes like blennies or gobies in estuaries) Recent results from three estuaries in southern California provide examples of how different tidal habitats are sampled. Here are som ...
Host–Symbiont Relationships: Understanding the Change from
... thought to include “commensalism,” “mutualism,” and “parasitism.” We prefer to include all such associations under the general term “symbiosis” but realize that our title does not comply, and many readers prefer to use a more specific term for symbiosis and other associations. In the preface of his ...
... thought to include “commensalism,” “mutualism,” and “parasitism.” We prefer to include all such associations under the general term “symbiosis” but realize that our title does not comply, and many readers prefer to use a more specific term for symbiosis and other associations. In the preface of his ...
Acoustic communication in insects REVIEW
... Insects, representing approximately 70 percent of the world’s species, are by far the most successful, and variable group of living specimens which have evolved on our planet. These arthropods are among the oldest terrestrial animals, and have existed for more than 400 million years (Straub & Lakes- ...
... Insects, representing approximately 70 percent of the world’s species, are by far the most successful, and variable group of living specimens which have evolved on our planet. These arthropods are among the oldest terrestrial animals, and have existed for more than 400 million years (Straub & Lakes- ...
pdf - New Zealand Ecological Society
... autumn. The winter consumption of invertebrates would add to the seasonal prey biomass estimates in this region. Overwintering nests become very large in their second season, which leads to relatively high localised wasp densities and subsequent heavy prey consumption. The potential impact of wasp f ...
... autumn. The winter consumption of invertebrates would add to the seasonal prey biomass estimates in this region. Overwintering nests become very large in their second season, which leads to relatively high localised wasp densities and subsequent heavy prey consumption. The potential impact of wasp f ...
Population Dynamics of Pathogens with Multiple Host Species
... changes in the relative intensity of within- versus betweenspecies transmission. I explicitly assume rates of betweenspecies transmission are lower than rates of within-species transmission; this largely reflects the ecological assumption that species tend to have more interactions with individuals ...
... changes in the relative intensity of within- versus betweenspecies transmission. I explicitly assume rates of betweenspecies transmission are lower than rates of within-species transmission; this largely reflects the ecological assumption that species tend to have more interactions with individuals ...
- Centre for Biodiversity Theory and Modelling
... a trematode parasite (Ribeiroia ondatrae), snails as first hosts, and amphibians as second hosts, they found that increasing resources led to an increase in the infection of amphibian hosts. The increase in infection occurred because algal production increased with resources, leading to an increase i ...
... a trematode parasite (Ribeiroia ondatrae), snails as first hosts, and amphibians as second hosts, they found that increasing resources led to an increase in the infection of amphibian hosts. The increase in infection occurred because algal production increased with resources, leading to an increase i ...
PDF
... Katrina M. Pagenkopp Lohan, Kimberly S. Reece, Terrence L. Miller*, Kersten N. Wheeler, Hamish J. Small, and Jeffrey D. Shields The Virginia Institute of Marine Science, The College of William & Mary, P.O. Box 1346, Gloucester Point, Virginia 23062. e-mail: [email protected] ABSTRACT: Hematodinium sp. i ...
... Katrina M. Pagenkopp Lohan, Kimberly S. Reece, Terrence L. Miller*, Kersten N. Wheeler, Hamish J. Small, and Jeffrey D. Shields The Virginia Institute of Marine Science, The College of William & Mary, P.O. Box 1346, Gloucester Point, Virginia 23062. e-mail: [email protected] ABSTRACT: Hematodinium sp. i ...
Grasshopper Mortality: Pathogens, Parasites, and Predators
... the development of different combinations of pathogens, parasites, and predators in the various grassland habitats. The combinations of grasshopper species present vs. the combination of natural enemies present will be extremely variable in the ...
... the development of different combinations of pathogens, parasites, and predators in the various grassland habitats. The combinations of grasshopper species present vs. the combination of natural enemies present will be extremely variable in the ...
Host-parasite interactions under extreme climatic conditions
... and also of definitive hosts (Pellegrino et al., 1966). Cases of predation decreasing parasite transmission have been described for other systems (Thieltges et al., 2008; Johnson et al., 2010) including some implying species of protozoa (Beauchamp et al., 2005) and fungi (Kagami et al., 2004). In co ...
... and also of definitive hosts (Pellegrino et al., 1966). Cases of predation decreasing parasite transmission have been described for other systems (Thieltges et al., 2008; Johnson et al., 2010) including some implying species of protozoa (Beauchamp et al., 2005) and fungi (Kagami et al., 2004). In co ...
population dynamics of two species of kleptoparasitic spiders
... adjusts its life cycle by retarding its development. It appears that A. flavescens has a more opportunistic life cycle strategy than A. bonadea. From winter to spring when the main hosts were absent, Argyrodes spiders were found to live on the webs of smaller orb-weavers such as Leucauge blanda, Cyc ...
... adjusts its life cycle by retarding its development. It appears that A. flavescens has a more opportunistic life cycle strategy than A. bonadea. From winter to spring when the main hosts were absent, Argyrodes spiders were found to live on the webs of smaller orb-weavers such as Leucauge blanda, Cyc ...
Molluscan Studies - Oxford Academic
... faster than the shell width in the early stage of growth, meaning that it first grows horizontally and then vertically relative to the substrate (Figs 2, 3). The shell growth of A. coralliophila probably modifies the structure of the burrow of N. jousseaumei. The association between A. coralliophila a ...
... faster than the shell width in the early stage of growth, meaning that it first grows horizontally and then vertically relative to the substrate (Figs 2, 3). The shell growth of A. coralliophila probably modifies the structure of the burrow of N. jousseaumei. The association between A. coralliophila a ...
Agents of selection
... larvae overwinter in the gall and pupate in March or April. After metamorphosis is completed in May, the adult emerges to find a mate to complete the life cycle. Eurosta mortality within the gall can result from a number of selective agents. 1. Parasitoid wasps: You studied these killers in Biol 10 ...
... larvae overwinter in the gall and pupate in March or April. After metamorphosis is completed in May, the adult emerges to find a mate to complete the life cycle. Eurosta mortality within the gall can result from a number of selective agents. 1. Parasitoid wasps: You studied these killers in Biol 10 ...
Quantifying Biodiversity: Experience with Parataxonomists and
... Wide Web by various search engines, using “parataxonomist” as a keyword, and found only seven sites that, to some extent, describe parataxonomist activities and training. This search has obvious limitations, such as the efficiency of the search engines, the reluctance of some researchers to publiciz ...
... Wide Web by various search engines, using “parataxonomist” as a keyword, and found only seven sites that, to some extent, describe parataxonomist activities and training. This search has obvious limitations, such as the efficiency of the search engines, the reluctance of some researchers to publiciz ...
Slide 1
... microparasites; immune response in hosts is typically absent or very shortlived; infections are often chronic as hosts are continually reinfected; examples include: helminths and arthropods Parasitoids – insects whose larvae develop by feeding on a single arthropod host and invariably kill that host ...
... microparasites; immune response in hosts is typically absent or very shortlived; infections are often chronic as hosts are continually reinfected; examples include: helminths and arthropods Parasitoids – insects whose larvae develop by feeding on a single arthropod host and invariably kill that host ...
Conflicts over host manipulation between different parasites and
... To reproduce, parasites need to survive long enough to complete their life cycle. In some cases, they also need to move to a different habitat – be it a different host or the host’s habitat. Unlike free living organisms, parasites rely on their host’s behaviour and/or appearance to do so. Often this ...
... To reproduce, parasites need to survive long enough to complete their life cycle. In some cases, they also need to move to a different habitat – be it a different host or the host’s habitat. Unlike free living organisms, parasites rely on their host’s behaviour and/or appearance to do so. Often this ...
How many parasites? - Princeton University
... the largest and most common groups of marine fish—parasitic trematodes have been recorded from only 62 of the 159 species, and from only 9 of 15 genera. The absences reflect a paucity of sampling; most species were examined at only one location. Moreover, not only are most host species unstudied, bu ...
... the largest and most common groups of marine fish—parasitic trematodes have been recorded from only 62 of the 159 species, and from only 9 of 15 genera. The absences reflect a paucity of sampling; most species were examined at only one location. Moreover, not only are most host species unstudied, bu ...
Endemism in hostparasite interactions among island populations of
... (SRI: n = 79) and SMI (n = 83). The proportion of individuals infected with at least one ectoparasite species was high and the same (94% of individuals) on both SRI and SCAT. In contrast, less than a third (24/83) of island foxes was infected with any ectoparasites on SMI, the island with the fewest ...
... (SRI: n = 79) and SMI (n = 83). The proportion of individuals infected with at least one ectoparasite species was high and the same (94% of individuals) on both SRI and SCAT. In contrast, less than a third (24/83) of island foxes was infected with any ectoparasites on SMI, the island with the fewest ...
File - Mrs. Schneider`s Science home page
... Bees use nectar from the flowers of plants as food. As they collect nectar, dust like pollen grains stick to their body. When they move from flower to flower, pollen is transferred to other flowers. The pollen from other flowers helps the plant make seeds. Which term describes the relationship betwe ...
... Bees use nectar from the flowers of plants as food. As they collect nectar, dust like pollen grains stick to their body. When they move from flower to flower, pollen is transferred to other flowers. The pollen from other flowers helps the plant make seeds. Which term describes the relationship betwe ...
Predators, parasitoids and pathogens: species richness, trophic
... predator±prey interactions in the ®eld. Hawkins & Lawton (1987) and Hawkins (1988) have demonstrated that herbivore feeding strategy aects vulnerability as measured by the species richness of parasitoids that consume the herbivore. They proposed that the pattern could be explained by dierences in ...
... predator±prey interactions in the ®eld. Hawkins & Lawton (1987) and Hawkins (1988) have demonstrated that herbivore feeding strategy aects vulnerability as measured by the species richness of parasitoids that consume the herbivore. They proposed that the pattern could be explained by dierences in ...
Predation, Mutualism, Commensalism, or Parasitism
... Predation one eats another (Herbivores eat plants. ...
... Predation one eats another (Herbivores eat plants. ...
Impacts of belowground herbivory on oviposition decisions in two
... closely related herbivorous species (cabbage butterflies; Lepidoptera: Pieridae) is influenced by rootfeeding insects, when they are given the chance to choose between host plants with and without root herbivores. Considering that egg load is an important physiological factor influencing the foragin ...
... closely related herbivorous species (cabbage butterflies; Lepidoptera: Pieridae) is influenced by rootfeeding insects, when they are given the chance to choose between host plants with and without root herbivores. Considering that egg load is an important physiological factor influencing the foragin ...
Parasitoid
A parasitoid is an organism that spends a significant portion of its life history attached to or within a single host organism in a relationship that is in essence parasitic; unlike a true parasite, however, it ultimately sterilises or kills, and sometimes consumes, the host. Thus parasitoids are similar to typical parasites except in the more dire prognosis for the host.