The Texas horned lizard (Phrynosoma cornutum) belongs to a
... residential areas, ants often are poisoned by people fearing ant bites or wanting to keep them away from stored food. Because harvester ant colonies are easily visible, these harmless ants often are destroyed. Prolonged periods of hot, dry weather associated with extreme drought may cause harvester ...
... residential areas, ants often are poisoned by people fearing ant bites or wanting to keep them away from stored food. Because harvester ant colonies are easily visible, these harmless ants often are destroyed. Prolonged periods of hot, dry weather associated with extreme drought may cause harvester ...
Commensalism
... Some species of kelp anchor themselves to the seafloor. These species have small air sacs, called air bladders, at the base of each leaf. The air bladders raise the top of the kelp to the water’s surface. What advantage do air bladders give the kelp? Jul'06 11th -51 ...
... Some species of kelp anchor themselves to the seafloor. These species have small air sacs, called air bladders, at the base of each leaf. The air bladders raise the top of the kelp to the water’s surface. What advantage do air bladders give the kelp? Jul'06 11th -51 ...
Impact of argentine ants (Linepithema humile, Mayr) on saproxylic
... in Afromontane forest comprised various unidentified species, excluding pine. One moist deadwood unit between 100-150 cm in length and 15-20 cm diameter, and in an advanced state of decomposition (easily broken by hand) was selected for sampling at each of the 40 stations. Logs were first carefully ...
... in Afromontane forest comprised various unidentified species, excluding pine. One moist deadwood unit between 100-150 cm in length and 15-20 cm diameter, and in an advanced state of decomposition (easily broken by hand) was selected for sampling at each of the 40 stations. Logs were first carefully ...
Structure and Function of Chihuahuan Desert
... 12 nests. Seed in the nest material is dispersed when the nest is abandoned and disintegrates. The inclusion of an exotic lovegrass in the nest construction material may contribute to the dispersal of this species, which is a competitor with native grasses. The most abundant lizard species on the Su ...
... 12 nests. Seed in the nest material is dispersed when the nest is abandoned and disintegrates. The inclusion of an exotic lovegrass in the nest construction material may contribute to the dispersal of this species, which is a competitor with native grasses. The most abundant lizard species on the Su ...
Predicting Trophic Cascades in an Antagonistic
... indirectly harm plants when herbivores are released from predator suppression. However, I found that black bears, which are predators of ants, were beneficial for plants. Plants near beardamaged ant nests had greater reproduction than those near undamaged nests, due to weaker ant protection for herb ...
... indirectly harm plants when herbivores are released from predator suppression. However, I found that black bears, which are predators of ants, were beneficial for plants. Plants near beardamaged ant nests had greater reproduction than those near undamaged nests, due to weaker ant protection for herb ...
Predation of artificial nests in a marshland: site and visibility effects
... I studied the effects of site (location) and nest visibility on the predation rate of artificial ground nests in islands of the Kis-Balaton marshland, Hungary. There was a strong site effect, i.e. nest predation was different among the three studied sites. No difference was found between visible (10 ...
... I studied the effects of site (location) and nest visibility on the predation rate of artificial ground nests in islands of the Kis-Balaton marshland, Hungary. There was a strong site effect, i.e. nest predation was different among the three studied sites. No difference was found between visible (10 ...
competitive interactions between the invasive european honey bee
... store nectar and pollen for provisioning the colony through the winter make individual Apis colonies much more intensive resource users than Bombus colonies. The combination of large colonies, perennial life history, broad diet, and the ability to rapidly locate and recruit to floral resources is of ...
... store nectar and pollen for provisioning the colony through the winter make individual Apis colonies much more intensive resource users than Bombus colonies. The combination of large colonies, perennial life history, broad diet, and the ability to rapidly locate and recruit to floral resources is of ...
Trophic interactions and population structure of the large blue
... history change: Caterpillars leave the food plant and drop to the ground. Once found by foraging Myrmica workers they are adopted and brought into the ant nest where they feed until the following summer (Fiedler 1990; Thomas and Elmes 1998). Because the mobility of lycaenid caterpillars is restricte ...
... history change: Caterpillars leave the food plant and drop to the ground. Once found by foraging Myrmica workers they are adopted and brought into the ant nest where they feed until the following summer (Fiedler 1990; Thomas and Elmes 1998). Because the mobility of lycaenid caterpillars is restricte ...
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... aggression, boldness and social behaviour. For each colony, we counted the individuals in each colony as a measure of colony size (size range: 50e160 individuals, mean SD ¼ 79 37), and assayed 12 brood carers and 12 patrollers, which we identified following the same procedure as for experiment 1. ...
... aggression, boldness and social behaviour. For each colony, we counted the individuals in each colony as a measure of colony size (size range: 50e160 individuals, mean SD ¼ 79 37), and assayed 12 brood carers and 12 patrollers, which we identified following the same procedure as for experiment 1. ...
Nest and brood stage association between ducks
... Data were gathered in 1985–2014 in Central Finland (63°N, 27°E). The study area consisted of richly vegetated lakes surrounded by cultivated fields. There are also some forest patches near the lakeshores. Characteristics of the study lakes are very similar to those described by Kauppinen & Väänänen ...
... Data were gathered in 1985–2014 in Central Finland (63°N, 27°E). The study area consisted of richly vegetated lakes surrounded by cultivated fields. There are also some forest patches near the lakeshores. Characteristics of the study lakes are very similar to those described by Kauppinen & Väänänen ...
ENEMIES OF HERBIVORES CAN SHAPE PLANT TRAITS
... including ants, spiders, and even birds (Bentley 1977, Pemberton 1993, Taylor and Foster 1996). When predators and parasitoids protect plants from herbivory in exchange for plant resources, the interaction often rewards both partners, resulting in a mutually beneficial association commonly called a ...
... including ants, spiders, and even birds (Bentley 1977, Pemberton 1993, Taylor and Foster 1996). When predators and parasitoids protect plants from herbivory in exchange for plant resources, the interaction often rewards both partners, resulting in a mutually beneficial association commonly called a ...
Response of macroarthropod assemblages to the loss
... We used null model analysis (Gotelli and Graves 1996) to infer the relative importance of the regional species pool, environmental filtering, and interspecific competition in the reassembly of arthropod assemblages following loss of hemlock. We examined the importance of the regional species pool on ...
... We used null model analysis (Gotelli and Graves 1996) to infer the relative importance of the regional species pool, environmental filtering, and interspecific competition in the reassembly of arthropod assemblages following loss of hemlock. We examined the importance of the regional species pool on ...
Management Guidelines for the Protection of Heronries in Ontario
... since this species is at the edge of its range (Fig. 1), it could presumably nest here again. Cattle egrets have been reported nesting in mixed-species heronries situated on some islands in the western arm of Lake Erie, and have nested as far north as Wellington County. Great egrets have been report ...
... since this species is at the edge of its range (Fig. 1), it could presumably nest here again. Cattle egrets have been reported nesting in mixed-species heronries situated on some islands in the western arm of Lake Erie, and have nested as far north as Wellington County. Great egrets have been report ...
- Smithsonian Tropical Research Institute
... total number of fragments produced was 58 and ranged from two to five per colony. For the first three months of the experiment no colonies fragmented; all of the 38 colonies that fragmented did so in a four day period that were associated with an unplanned drop in water temperature of around 9 °C th ...
... total number of fragments produced was 58 and ranged from two to five per colony. For the first three months of the experiment no colonies fragmented; all of the 38 colonies that fragmented did so in a four day period that were associated with an unplanned drop in water temperature of around 9 °C th ...
Response of macroarthropod assemblages to the loss
... We used null model analysis (Gotelli and Graves 1996) to infer the relative importance of the regional species pool, environmental filtering, and interspecific competition in the reassembly of arthropod assemblages following loss of hemlock. We examined the importance of the regional species pool on ...
... We used null model analysis (Gotelli and Graves 1996) to infer the relative importance of the regional species pool, environmental filtering, and interspecific competition in the reassembly of arthropod assemblages following loss of hemlock. We examined the importance of the regional species pool on ...
Introduction
... the matrix consisted of the number of bait occurrences for each species, summed over the 24-h observation period each month. The number of bait occurrences could range from a minimum of 0 for a species that never occurred during a month, to a maximum of 25×24=600 for a species that occupied all 25 b ...
... the matrix consisted of the number of bait occurrences for each species, summed over the 24-h observation period each month. The number of bait occurrences could range from a minimum of 0 for a species that never occurred during a month, to a maximum of 25×24=600 for a species that occupied all 25 b ...
Adaptive advantages of myrmecochory: the predator
... suffered scarcely any predation, but seeds under reproductive-age plants experienced losses ca 50%. Conversely, in the northern region (Caurel), seeds in nests suffered significantly greater losses than seeds under plants or intermediate destinations, suggesting that nests were especially unsafe des ...
... suffered scarcely any predation, but seeds under reproductive-age plants experienced losses ca 50%. Conversely, in the northern region (Caurel), seeds in nests suffered significantly greater losses than seeds under plants or intermediate destinations, suggesting that nests were especially unsafe des ...
Adaptive advantages of myrmecochory: the predator
... suffered scarcely any predation, but seeds under reproductive-age plants experienced losses ca 50%. Conversely, in the northern region (Caurel), seeds in nests suffered significantly greater losses than seeds under plants or intermediate destinations, suggesting that nests were especially unsafe des ...
... suffered scarcely any predation, but seeds under reproductive-age plants experienced losses ca 50%. Conversely, in the northern region (Caurel), seeds in nests suffered significantly greater losses than seeds under plants or intermediate destinations, suggesting that nests were especially unsafe des ...
Adaptive advantages of myrmecochory: the predator
... suffered scarcely any predation, but seeds under reproductive-age plants experienced losses ca 50%. Conversely, in the northern region (Caurel), seeds in nests suffered significantly greater losses than seeds under plants or intermediate destinations, suggesting that nests were especially unsafe des ...
... suffered scarcely any predation, but seeds under reproductive-age plants experienced losses ca 50%. Conversely, in the northern region (Caurel), seeds in nests suffered significantly greater losses than seeds under plants or intermediate destinations, suggesting that nests were especially unsafe des ...
Invasive ants alter the phylogenetic structure on native communities
... Savignano, 1990; Sanders et al., 2003). In sum, results from these studies suggest that competitively dominant species often shape the structure of ant communities. ...
... Savignano, 1990; Sanders et al., 2003). In sum, results from these studies suggest that competitively dominant species often shape the structure of ant communities. ...
Colonial Breeding in the Barn Swallow (Hirundo Rustica) and Its
... A number of factors could have contributed to the large variability observed in the feeding rates and might have masked any differences attributable to colony size. It was impossible to insure that foraging conditions were identical at a11colonies or in all observation periods. In an attempt to cont ...
... A number of factors could have contributed to the large variability observed in the feeding rates and might have masked any differences attributable to colony size. It was impossible to insure that foraging conditions were identical at a11colonies or in all observation periods. In an attempt to cont ...
The role of multiple pheromones in food recruitment by ants
... their nest and discovered food sources with a chemical (pheromone), thus indirectly leading nestmates to the food. Thus, the emitter and the receiver do not need to be present simultaneously to exchange information (Hölldobler and Wilson, 1990; Nieh, 2004; Reinhard and Kaib, 2001). Recruitment phero ...
... their nest and discovered food sources with a chemical (pheromone), thus indirectly leading nestmates to the food. Thus, the emitter and the receiver do not need to be present simultaneously to exchange information (Hölldobler and Wilson, 1990; Nieh, 2004; Reinhard and Kaib, 2001). Recruitment phero ...
Termites, vertebrate herbivores, and the fruiting success of Acacia
... likely to reproduce than those growing farther away, in off-mound soils. Although vertebrate herbivores preferentially used termite mounds as demonstrated by dung deposits, long-term exclusion of mammalian grazers did not significantly reduce A. drepanolobium fruit production. Leaf N was significantly ...
... likely to reproduce than those growing farther away, in off-mound soils. Although vertebrate herbivores preferentially used termite mounds as demonstrated by dung deposits, long-term exclusion of mammalian grazers did not significantly reduce A. drepanolobium fruit production. Leaf N was significantly ...
Annual Report - Panay Eco-Social Conservation Project
... and Mr. Georg Gewers, a Berlin architect, long term supporters of the project, donated funds usual. However, among the European supporters diversion of funds going to the vast numbers of refugees come from Near East and the Balkans were noticeable in the past year. This competition, based one-sided ...
... and Mr. Georg Gewers, a Berlin architect, long term supporters of the project, donated funds usual. However, among the European supporters diversion of funds going to the vast numbers of refugees come from Near East and the Balkans were noticeable in the past year. This competition, based one-sided ...
Ant community structure on a small Pacific island: only one native
... baits during the course of 1 day in each habitat. Baits are an exceptionally rich food source useful to establish the daily rhythms of species (Cros et al. 1997). Eighteen pairs of baits were laid regularly over each study site. Baits were small plastic spoons with two different large food rewards ( ...
... baits during the course of 1 day in each habitat. Baits are an exceptionally rich food source useful to establish the daily rhythms of species (Cros et al. 1997). Eighteen pairs of baits were laid regularly over each study site. Baits were small plastic spoons with two different large food rewards ( ...
Green-head ant
The green-head ant (Rhytidoponera metallica), often simply referred to as the green ant, or sometimes the green-headed ant or in Queensland, the metallic pony ant, is a metallic-green coloured ant, generally 5–7 millimetres (0.20–0.28 in) in length, that can be found throughout Australia, particularly in urban and suburban areas. It is often confused - verbally, not visually - with the weaver ant of northern Queensland, Australia, where it is also referred to as the green ant.Green-head queens are semi-claustral, and forage for food themselves during the early stages of a colony. Queens are difficult to distinguish from workers, they generally have the same build, but are slightly larger with a more pronounced thorax and gaster. Workers forage alone and are omnivorous, however a majority of their diet consists of other insects. Colonies can range from small colonies, to large ones that can be around a metre deep into the ground and contain around a hundred workers.