Nitrogen acquisition from different spatial distributions by six Great
... ABSTRACT.—Plants of different growth form may utilize soil nutrients in various spatial distributions through different scales of foraging. In this study we evaluated the ability of 6 species commonly found in the Great Basin to utilize nitrogen (N) distributed in different patterns. Three growth fo ...
... ABSTRACT.—Plants of different growth form may utilize soil nutrients in various spatial distributions through different scales of foraging. In this study we evaluated the ability of 6 species commonly found in the Great Basin to utilize nitrogen (N) distributed in different patterns. Three growth fo ...
rtf - Florida Entomological Society
... The ants of two mangrove communities, [PAMC and Cienaga Los Olivitos (CLO) (30 Km north of PAMC)], from Zulia, Venezuela were surveyed. Collections were sampled every 15 days from June 1999 to March 2000. A total of 35 species (34 PAMC; 18 CLO; 17 Shared) was found in both sites belonging to 16 gene ...
... The ants of two mangrove communities, [PAMC and Cienaga Los Olivitos (CLO) (30 Km north of PAMC)], from Zulia, Venezuela were surveyed. Collections were sampled every 15 days from June 1999 to March 2000. A total of 35 species (34 PAMC; 18 CLO; 17 Shared) was found in both sites belonging to 16 gene ...
Life histories
... Concept 7.1: Life history patterns vary within and among species. Individuals within a species show variation in life history traits. The differences may be due to genetic variation or environmental conditions. Generalizations about life history traits of a species can still be made. ...
... Concept 7.1: Life history patterns vary within and among species. Individuals within a species show variation in life history traits. The differences may be due to genetic variation or environmental conditions. Generalizations about life history traits of a species can still be made. ...
Key Publications - Details and Abstracts PDF, 286.38 KB
... marine fish live in largely non- saturated niche space under non-equilibrium conditions, ie., they live in assemblages rather than in communities structured by competition. Nestedness occurs in such assemblages, but it can be explained by characteristics of the species themselves. There is little ag ...
... marine fish live in largely non- saturated niche space under non-equilibrium conditions, ie., they live in assemblages rather than in communities structured by competition. Nestedness occurs in such assemblages, but it can be explained by characteristics of the species themselves. There is little ag ...
Why Study Insects?
... Insects are like us…and not Insects have BRAINS!---most behaviors are inherited---some Can learn (limited); a few (very few) can REASON Insects have SPIT!---liquify food, pre-digestion, can cause Allergic reactions in animals/people; discolor/kill plant tissues ...
... Insects are like us…and not Insects have BRAINS!---most behaviors are inherited---some Can learn (limited); a few (very few) can REASON Insects have SPIT!---liquify food, pre-digestion, can cause Allergic reactions in animals/people; discolor/kill plant tissues ...
Local diversity reduces infection risk across multiple
... Here, we use field data from multiple host–parasite associations from an extensive sampling of the entire littoral communities of four New Zealand lakes to provide a replicated test of the hypothesis that local biodiversity affects infection risk in aquatic systems. Our analysis focuses exclusively ...
... Here, we use field data from multiple host–parasite associations from an extensive sampling of the entire littoral communities of four New Zealand lakes to provide a replicated test of the hypothesis that local biodiversity affects infection risk in aquatic systems. Our analysis focuses exclusively ...
Competition - practical ecology
... between individuals of two species that share the use of a resource that limits their growth, survival, or reproduction. CONCEPT 12.2 Competition, whether direct or indirect, can limit the distributions and abundances of competing species. ...
... between individuals of two species that share the use of a resource that limits their growth, survival, or reproduction. CONCEPT 12.2 Competition, whether direct or indirect, can limit the distributions and abundances of competing species. ...
File
... Females build mounds for nests and lay up to 30 eggs. Egg gender is determined by the temperature of the nest. 91 degrees and higher, eggs will be male, 85 degrees and lower, eggs will be female. ...
... Females build mounds for nests and lay up to 30 eggs. Egg gender is determined by the temperature of the nest. 91 degrees and higher, eggs will be male, 85 degrees and lower, eggs will be female. ...
Why Alien Invaders Succeed: Support for the Escape-from
... Alternatively, even though the specialist fungus Microbotryum did manage to cross the Atlantic Ocean, it remains severely restricted geographically and seems to infect Silene only in Virginia (this study; J. Antonovics, personal communication). It is not known what factors are responsible for the ap ...
... Alternatively, even though the specialist fungus Microbotryum did manage to cross the Atlantic Ocean, it remains severely restricted geographically and seems to infect Silene only in Virginia (this study; J. Antonovics, personal communication). It is not known what factors are responsible for the ap ...
characteristics of insects and other terrestrial arthropods
... of insects, is a large component of the Academy’s research effort and insects comprise, by far, the largest number of specimens catalogued in Academy collections. Related arthropod species, such as spiders, scorpions, and millipedes, are also represented in the collections and so a broader focus on ...
... of insects, is a large component of the Academy’s research effort and insects comprise, by far, the largest number of specimens catalogued in Academy collections. Related arthropod species, such as spiders, scorpions, and millipedes, are also represented in the collections and so a broader focus on ...
Lecture 2 and text (pg. 1,2,12-14) 1. What are some properties of life
... Sympatric Speciation - same country 9. What is the evidence that reproductive isolation evolves as a by product of divergence, rather than via direct selection for the trait itself? 10.What is polyploidy and how does it result in sympatric speciation? 11.What are two other factors that may lead to s ...
... Sympatric Speciation - same country 9. What is the evidence that reproductive isolation evolves as a by product of divergence, rather than via direct selection for the trait itself? 10.What is polyploidy and how does it result in sympatric speciation? 11.What are two other factors that may lead to s ...
pdf - New Zealand Ecological Society
... 2004; Carroll et al. 2007). Microevolutionary processes have been documented in many different functional groups, such as birds (Table 1). The rate of evolution in these cases may be sufficiently fast to increase population viability in contemporary timescales (Thompson 1998; Hairston et al. 2005). ...
... 2004; Carroll et al. 2007). Microevolutionary processes have been documented in many different functional groups, such as birds (Table 1). The rate of evolution in these cases may be sufficiently fast to increase population viability in contemporary timescales (Thompson 1998; Hairston et al. 2005). ...
Predation of Frankliniella occidentalis by Orius insidiosus on plant
... summer and fall to predict suppression of thrips (Figs. 1 and 2). Local extinction was evident in M. sativa and the persistence of the predator allowed only occasional buildup of populations. Populations of thrips developed rapidly in a density independent fashion during the spring (Figs. 1 and 2). ...
... summer and fall to predict suppression of thrips (Figs. 1 and 2). Local extinction was evident in M. sativa and the persistence of the predator allowed only occasional buildup of populations. Populations of thrips developed rapidly in a density independent fashion during the spring (Figs. 1 and 2). ...
N - McMaster Department of Biology
... potential pathways of indirect interactions can be used to generate testable hypotheses that can illuminate which indirect interactions probably account for a particular response. Furthermore, indirect effects of different levels of intensity and different number of participating species may be the ...
... potential pathways of indirect interactions can be used to generate testable hypotheses that can illuminate which indirect interactions probably account for a particular response. Furthermore, indirect effects of different levels of intensity and different number of participating species may be the ...
Effects of habitat isolation on pollinator communities and
... were observed on mustard. The most abundant groups were beetles (especially Meligethes spp.), parasitic Hymenoptera and flies (Table 1). The most important group of pollinators, the bees, were represented with 179 individuals of solitary bees (Apoidea except Apis and Bombus), bumblebees (Bombus spp. ...
... were observed on mustard. The most abundant groups were beetles (especially Meligethes spp.), parasitic Hymenoptera and flies (Table 1). The most important group of pollinators, the bees, were represented with 179 individuals of solitary bees (Apoidea except Apis and Bombus), bumblebees (Bombus spp. ...
Enemies of bees
... assume a vertical position at rest.Their long thin antennae are club-shaped and their posterior wings are hairless. The Heterocera or moths, have a broad and solid body, short, thick, prismatic antennae and unequal wings; the anterior wing being lengthened and narrow, the posterior wing rather round ...
... assume a vertical position at rest.Their long thin antennae are club-shaped and their posterior wings are hairless. The Heterocera or moths, have a broad and solid body, short, thick, prismatic antennae and unequal wings; the anterior wing being lengthened and narrow, the posterior wing rather round ...
Homolgous, Analogous and Vestigial Structures
... have shared ancestry or if similar traits evolved seperately. There are three patterns that occur during evoltuion that are often related to the adaptation and evolution of these structures. 1. Convergent evolution: Process in which two different lineages evolve a similar characteristic independentl ...
... have shared ancestry or if similar traits evolved seperately. There are three patterns that occur during evoltuion that are often related to the adaptation and evolution of these structures. 1. Convergent evolution: Process in which two different lineages evolve a similar characteristic independentl ...
Homolgous, Analogous and Vestigial Structures
... have shared ancestry or if similar traits evolved seperately. There are three patterns that occur during evoltuion that are often related to the adaptation and evolution of these structures. 1. Convergent evolution: Process in which two different lineages evolve a similar characteristic independentl ...
... have shared ancestry or if similar traits evolved seperately. There are three patterns that occur during evoltuion that are often related to the adaptation and evolution of these structures. 1. Convergent evolution: Process in which two different lineages evolve a similar characteristic independentl ...
Field studies on Fiji`s endemic swallowtail butterfly, Papilio schmeltzi
... Fiji’s swallowtail butterfly, Papilio schmeltzi, is a Rutaceae feeding, tropical Papilionid butterfly that is endemic to the Fiji islands and generally occurs in low density. Field observations on habitat and the seasonal activity patterns of P. schmeltzi were carried out in the Vatukarasa area in K ...
... Fiji’s swallowtail butterfly, Papilio schmeltzi, is a Rutaceae feeding, tropical Papilionid butterfly that is endemic to the Fiji islands and generally occurs in low density. Field observations on habitat and the seasonal activity patterns of P. schmeltzi were carried out in the Vatukarasa area in K ...
BUDS PUBLIC SCHOOL, DUBAI Organisms and Populations
... iii) Death Rate / Mortality :- It refers to death rate of individuals in the population. It is expressed in as number of individual dying in a given period. iv) Carrying Capacity:- Each habitat or ecosystem has a certain space which can accommodate a finite number of organisms depending on its size ...
... iii) Death Rate / Mortality :- It refers to death rate of individuals in the population. It is expressed in as number of individual dying in a given period. iv) Carrying Capacity:- Each habitat or ecosystem has a certain space which can accommodate a finite number of organisms depending on its size ...
Potamopyrgus antipodarum(Mollusca
... New-Zealand populations, and according to Robson (1923), P. antipodarum was never found infected in European brackish waters where other species of Hydrobiidae (Hydrobia ulvae, H. ventrosa) were heavily infected by larval trematodes (sometimes 90%). To describe this sanguinicolid and its life-cycle, ...
... New-Zealand populations, and according to Robson (1923), P. antipodarum was never found infected in European brackish waters where other species of Hydrobiidae (Hydrobia ulvae, H. ventrosa) were heavily infected by larval trematodes (sometimes 90%). To describe this sanguinicolid and its life-cycle, ...
Beak of the Fish: What Cichlid Flocks Reveal About Speciation
... none of these cichlid species are shared between ...
... none of these cichlid species are shared between ...
Edible insects as a natural resource
... heterogeneity as possible; reduce contrast between remnant patches and neighbouring disturbed patches; set aside land for insects outside reserves; simulate natural conditions and disturbance; and connect similar patches of quality habitat. Boulidam (2010) added that efforts in edible insect managem ...
... heterogeneity as possible; reduce contrast between remnant patches and neighbouring disturbed patches; set aside land for insects outside reserves; simulate natural conditions and disturbance; and connect similar patches of quality habitat. Boulidam (2010) added that efforts in edible insect managem ...
The evolution of pollen production in Campanula persicifolia David
... the abdomen against the pollen-collecting hairs of the style (Janzon, 1983). In the presence of such solitary bees, pollen production is under consumer stress. Pollination by these bees depends on untidy harvesting rather than being a by-product of nectar foraging, as is the case with bumble bees. ...
... the abdomen against the pollen-collecting hairs of the style (Janzon, 1983). In the presence of such solitary bees, pollen production is under consumer stress. Pollination by these bees depends on untidy harvesting rather than being a by-product of nectar foraging, as is the case with bumble bees. ...
Beneficial Insects and Mites - Manatee County Extension Office
... 1. This document is ENY-276 (IN078) (originally published as Circular 1298 by the Office of Agricultural Entomology, University of Illinois at Urbana-Champaign), one of a series of the Entomology and Nematology Department, Florida Cooperative Extension Service, Institute of Food and Agricultural Sci ...
... 1. This document is ENY-276 (IN078) (originally published as Circular 1298 by the Office of Agricultural Entomology, University of Illinois at Urbana-Champaign), one of a series of the Entomology and Nematology Department, Florida Cooperative Extension Service, Institute of Food and Agricultural Sci ...
Coevolution
In biology, coevolution is ""the change of a biological object triggered by the change of a related object"". In other words, when changes in at least two species' genetic compositions reciprocally affect each other’s evolution, coevolution has occurred.There is evidence for coevolution at the level of populations and species. Charles Darwin briefly described the concept of coevolution in On the Origin of Species (1859) and developed it in detail in Fertilisation of Orchids (1862). It is likely that viruses and their hosts coevolve in various scenarios.However, there is little evidence of coevolution driving large-scale changes in Earth's history, since abiotic factors such as mass extinction and expansion into ecospaces seem to guide the shifts in the abundance of major groups. One proposed specific example was the evolution of high-crowned teeth in grazers when grasslands spread through North America - long held up as an example of coevolution. We now know that these events happened independently.Coevolution can occur at many biological levels: it can be as microscopic as correlated mutations between amino acids in a protein or as macroscopic as covarying traits between different species in an environment. Each party in a coevolutionary relationship exerts selective pressures on the other, thereby affecting each other's evolution. Coevolution of different species includes the evolution of a host species and its parasites (host–parasite coevolution), and examples of mutualism evolving through time. Evolution in response to abiotic factors, such as climate change, is not biological coevolution (since climate is not alive and does not undergo biological evolution).The general conclusion is that coevolution may be responsible for much of the genetic diversity seen in normal populations including: blood-plasma polymorphism, protein polymorphism, histocompatibility systems, etc.The parasite/host relationship probably drove the prevalence of sexual reproduction over the more efficient asexual reproduction. It seems that when a parasite infects a host, sexual reproduction affords a better chance of developing resistance (through variation in the next generation), giving sexual reproduction viability for fitness not seen in the asexual reproduction, which produces another generation of the organism susceptible to infection by the same parasite.Coevolution is primarily a biological concept, but researchers have applied it by analogy to fields such as computer science, sociology / international political economy and astronomy.