Reproductive versus ecological advantages to larger body size in
... traditionally defined to include cases where traits evolve to enhance mating success in interactions with conspecifics (rivals or potential mates). Fecundity selection involves the evolution of traits that enhance reproductive output directly (e.g. through an increase of body size to accommodate lar ...
... traditionally defined to include cases where traits evolve to enhance mating success in interactions with conspecifics (rivals or potential mates). Fecundity selection involves the evolution of traits that enhance reproductive output directly (e.g. through an increase of body size to accommodate lar ...
Assessment of Yellow Crazy Ants (Anoplolepis gracilipes) on
... While tolerant of neighbouring colonies of the same species, invasive ants behave very aggressively towards other ant species that are found within their foraging territory. As an example Argentine ants frequently attack newly mated queens of other ant species thus interfering with the establishment ...
... While tolerant of neighbouring colonies of the same species, invasive ants behave very aggressively towards other ant species that are found within their foraging territory. As an example Argentine ants frequently attack newly mated queens of other ant species thus interfering with the establishment ...
SCHOOL OF ANTS AUSTRALIA
... realised this would be my life for the next three years. It was the year 2000 and I was starting a PhD on Christmas Island in the Indian Ocean. I was there to work out what had triggered an extraordinary explosion in numbers of introduced yellow crazy ants. Since the mid-1990s more than 15 high dens ...
... realised this would be my life for the next three years. It was the year 2000 and I was starting a PhD on Christmas Island in the Indian Ocean. I was there to work out what had triggered an extraordinary explosion in numbers of introduced yellow crazy ants. Since the mid-1990s more than 15 high dens ...
myrmecophile insecta associated with some ant
... beetles of this family are quite similar to ants in their morphology and therefore they take the name "the ant-like beetles". It is believed that these myrmecophilous Coleoptera may gain protection against predators due to this similarity. Family: Carabidae: This family is represented by four specie ...
... beetles of this family are quite similar to ants in their morphology and therefore they take the name "the ant-like beetles". It is believed that these myrmecophilous Coleoptera may gain protection against predators due to this similarity. Family: Carabidae: This family is represented by four specie ...
Adaptive advantages and the evolution of colony formation in
... Wau Ecology Institute. Colony 1, containing approximately 7 5 individuals, was observed during the period of 19 May to 6 July, 1971; colony 3, with approximately 30 members, was observed during the period of 16 November to 12 December, 1971. The observer sat on a perch 3 to 4 m from the edge of the ...
... Wau Ecology Institute. Colony 1, containing approximately 7 5 individuals, was observed during the period of 19 May to 6 July, 1971; colony 3, with approximately 30 members, was observed during the period of 16 November to 12 December, 1971. The observer sat on a perch 3 to 4 m from the edge of the ...
predation on social and solitary individuals of the spider
... The encounter effect predicts that individuals encounter predators at a lower rate, due to foraging constraints by the predators . Once an encounter occurs, the dilution effect predicts that a member's probability of being captured decreases with group size . Groups of non-territorial permanently-so ...
... The encounter effect predicts that individuals encounter predators at a lower rate, due to foraging constraints by the predators . Once an encounter occurs, the dilution effect predicts that a member's probability of being captured decreases with group size . Groups of non-territorial permanently-so ...
Complex interactions on fig trees: ants capturing parasitic wasps as
... the time of the experiment, while the parasite Philotrypesis caricae L. is the sole parasite on F. carica . This last species has been described as a kleptoparasite (it oviposits through the fig wall into fig ovules containing pollinator eggs) (Joseph 1957) and both Apocrypta species are parasitoids ...
... the time of the experiment, while the parasite Philotrypesis caricae L. is the sole parasite on F. carica . This last species has been described as a kleptoparasite (it oviposits through the fig wall into fig ovules containing pollinator eggs) (Joseph 1957) and both Apocrypta species are parasitoids ...
Sex and Aggregation-Sex Pheromones of Cerambycid Beetles
... provided no evidence of even the slightest attraction. In all four cases, the compounds are produced sex specifically by males, and their structures are identical to common pheromone components of related species, so it seems unlikely that the compounds might be, for example, defensive compounds ins ...
... provided no evidence of even the slightest attraction. In all four cases, the compounds are produced sex specifically by males, and their structures are identical to common pheromone components of related species, so it seems unlikely that the compounds might be, for example, defensive compounds ins ...
Respiration, worker body size, tempo and activity in
... as a function of colony mass. This relationship is likely related to the difference in the fraction of active to inactive ants in larger colonies (not individual mass), and emphasizes that the influence of colony size is detectable within species and with small changes in colony size (Holbrook et al ...
... as a function of colony mass. This relationship is likely related to the difference in the fraction of active to inactive ants in larger colonies (not individual mass), and emphasizes that the influence of colony size is detectable within species and with small changes in colony size (Holbrook et al ...
Bumble Bee
... although they are somewhat darker with light bands on the abdomen. They also have different habits. Leafcutter bees are not aggressive and sting only when handled. Their sting is very mild, much less painful than that of honeybees or yellowjacket wasps. Leafcutter bees are solitary bees, meaning tha ...
... although they are somewhat darker with light bands on the abdomen. They also have different habits. Leafcutter bees are not aggressive and sting only when handled. Their sting is very mild, much less painful than that of honeybees or yellowjacket wasps. Leafcutter bees are solitary bees, meaning tha ...
The ecology of Type="Italic">Myrmica ants
... site will have a maximum value of R, which may differ between species. The effective value of R for any colony is a function of nest site quality, which is a combination of the physical characteristics of the site and the resources in the surrounding foraging territory (see below). This type of mode ...
... site will have a maximum value of R, which may differ between species. The effective value of R for any colony is a function of nest site quality, which is a combination of the physical characteristics of the site and the resources in the surrounding foraging territory (see below). This type of mode ...
Negligible senescence in the longest living rodent, the
... Mortality rates of naked mole-rats are highest in their Wrst 2 months of life, and death in this age cohort is generally attributed to inadequate maternal care, cannibalism by siblings and poor inoculation of gastrointestinal Xora and fauna. Thereafter, age-speciWc rates of mortality are not evident ...
... Mortality rates of naked mole-rats are highest in their Wrst 2 months of life, and death in this age cohort is generally attributed to inadequate maternal care, cannibalism by siblings and poor inoculation of gastrointestinal Xora and fauna. Thereafter, age-speciWc rates of mortality are not evident ...
On the association between Myrmarachne spp.Salticidaeand ants*
... similar to that of the dark forest morph of Oecophylla longinoda amongst which they were found. These forest ants have dark red-brown head, black thorax, and pale red-brown abdomen, with legs black towards the base, pale tips, and red-brown tarsi. The colony of ants from which the two spiders came w ...
... similar to that of the dark forest morph of Oecophylla longinoda amongst which they were found. These forest ants have dark red-brown head, black thorax, and pale red-brown abdomen, with legs black towards the base, pale tips, and red-brown tarsi. The colony of ants from which the two spiders came w ...
Open full article - European Journal of Entomology
... concentrated and reliable food source, Hemiptera from protection against enemies and from honeydew removal, which prevents hemipteran eggs and nymphs from suffocation and mould growth. This leads to increased food uptake and larger hemipteran populations (Way, 1963; Stadler et al., 2001). Ant-hemipt ...
... concentrated and reliable food source, Hemiptera from protection against enemies and from honeydew removal, which prevents hemipteran eggs and nymphs from suffocation and mould growth. This leads to increased food uptake and larger hemipteran populations (Way, 1963; Stadler et al., 2001). Ant-hemipt ...
Ants and Ant
... concluded that the ants and acacias are obligate symbionts, depending entirely upon each other. The protectionist hypothesis is correct, and an impressive mutualism has coevolved between acacias and Pseudom)rmex. Though both Azteca and Pseudomyrmexare aggressive ants, many ant plant: harbor less obv ...
... concluded that the ants and acacias are obligate symbionts, depending entirely upon each other. The protectionist hypothesis is correct, and an impressive mutualism has coevolved between acacias and Pseudom)rmex. Though both Azteca and Pseudomyrmexare aggressive ants, many ant plant: harbor less obv ...
Ecological morphospace of New World ants
... information not only in the form of the measure itself, but also about morphological and ecological covariates and phylogenetic effects (Derrickson & Ricklefs, 1988; Losos & Miles, 1994). Thus at least three related considerations are important in selecting traits for ecomorphology studies. First, a ...
... information not only in the form of the measure itself, but also about morphological and ecological covariates and phylogenetic effects (Derrickson & Ricklefs, 1988; Losos & Miles, 1994). Thus at least three related considerations are important in selecting traits for ecomorphology studies. First, a ...
Myrmecophilous butterflies utilise ant-
... Organisms and methods The study system Parrhasius polibetes is a facultatively myrmecophilous lycaenid, whose larvae may be attended by several ant genera from the third instar on. It is a polyphagous species, recorded on flower buds of more than 80 plant species (Kaminski et al., 2012) and showing ...
... Organisms and methods The study system Parrhasius polibetes is a facultatively myrmecophilous lycaenid, whose larvae may be attended by several ant genera from the third instar on. It is a polyphagous species, recorded on flower buds of more than 80 plant species (Kaminski et al., 2012) and showing ...
Termites: General Features and Ecosystem Services
... Termites are social insects related to cockroaches and are scientifically classified under the order Isoptera. They have a highly evolved social organization and hierarchical structure. They are living in colonies of various sizes containing a number of different castes which include workers, soldie ...
... Termites are social insects related to cockroaches and are scientifically classified under the order Isoptera. They have a highly evolved social organization and hierarchical structure. They are living in colonies of various sizes containing a number of different castes which include workers, soldie ...
Combined effects of salinity and temperature on survival and
... the two factors, where temperature can modify the effects of salinity, thereby changing the salinity tolerance range of an organism, and salinity can modify the effects of temperature accordingly (e.g. Kinne, 1963; Williams and Geddes, 1991). The present study focuses on the combined effects of temp ...
... the two factors, where temperature can modify the effects of salinity, thereby changing the salinity tolerance range of an organism, and salinity can modify the effects of temperature accordingly (e.g. Kinne, 1963; Williams and Geddes, 1991). The present study focuses on the combined effects of temp ...
The Evolution of Reciprocal Altruism
... in speciesthatshow parentalcare. less dominant individual. Hall and DeVore and offspring that (1965) have describedthe tendencyfor baboon The relationshipis usuallyso asymmetrical fewor no situationsarise in which an offspring alliances to formwhich fightas a unit in agis capable of performing an al ...
... in speciesthatshow parentalcare. less dominant individual. Hall and DeVore and offspring that (1965) have describedthe tendencyfor baboon The relationshipis usuallyso asymmetrical fewor no situationsarise in which an offspring alliances to formwhich fightas a unit in agis capable of performing an al ...
Oecophylla longinoda. in cocoa agroecosystems in order to suppress cocoa pests such as capsids?
... (Van Mele, 2000). The earliest report of Oecophylla ants at work among the orange trees is described in a book on tropical and subtropical botany written by Hsi Han in AD 304. "The people of Chiao-Chih sell in their markets ants in bags of rush matting. The nests are like silk. The bags are all atta ...
... (Van Mele, 2000). The earliest report of Oecophylla ants at work among the orange trees is described in a book on tropical and subtropical botany written by Hsi Han in AD 304. "The people of Chiao-Chih sell in their markets ants in bags of rush matting. The nests are like silk. The bags are all atta ...
The Saurian Psyche Revisted: Lizards in Research
... warmer microhabitats and effectively developing a "fever" (Kluger, Ringler, and Anver 1975) which may be important to survival (Bernheim and Kluger 1976). In a study of blue spiny lizards, thermal radio transmitters were used to monitor the lizards' body temperatures during various activities (Green ...
... warmer microhabitats and effectively developing a "fever" (Kluger, Ringler, and Anver 1975) which may be important to survival (Bernheim and Kluger 1976). In a study of blue spiny lizards, thermal radio transmitters were used to monitor the lizards' body temperatures during various activities (Green ...
Eusociality
Eusociality (Greek eu: ""good/real"" + ""social""), the highest level of organization of animal sociality, is defined by the following characteristics: cooperative brood care (including brood care of offspring from other individuals), overlapping generations within a colony of adults, and a division of labour into reproductive and non-reproductive groups. The division of labor creates specialized behavioral groups within an animal society which are sometimes called castes. Eusociality is distinguished from all other social systems because individuals of at least one caste usually lose the ability to perform at least one behavior characteristic of individuals in another caste.Eusociality exists in certain insects, crustaceans and possibly mammals. It is mostly observed and studied in the Hymenoptera (ants, bees, and wasps) and in the termites. For example, a colony has caste differences; queens and reproductive males take the roles as the sole reproducers while the soldiers and workers work together to create a living situation favorable for the brood. In addition to Hymenoptera and Isoptera, there are two known eusocial vertebrates from the order Rodentia, which includes the naked mole-rat and the Damaraland mole-rat. Most of the individuals cooperatively care for the brood of a single reproductive female (the queen) to which they are most likely related. Some shrimps such as Synalpheus regalis are also eusocial.Several other levels of animal sociality have been distinguished. These include presocial (solitary but social), subsocial, and parasocial (including communal, quasisocial, and semisocial).