Limits...
The cavity-nest ant Temnothorax crassispinus prefers larger nests.

Mitrus S - Insectes Soc (2014)

Bottom Line: Queenright colonies from bigger nests produced more sexual individuals, but there was no correlation between number of workers and sex allocation ratio, or between volume of nest and sex allocation ratio.In a laboratory experiment where ant colonies were kept in 470 and 860 mm(3) nests, larger colonies allocated more energy to produce sexual individuals.The results of this study show the selectivity of T. crassispinus ants regarding the size of nest cavity, and that the nest volume has an impact on life history parameters.

View Article: PubMed Central - PubMed

Affiliation: Laboratory of Evolution and Animal Ecology, Department of Biosystematics, Opole University, Oleska 22, 45-052 Opole, Poland.

ABSTRACT

Colonies of the ant Temnothorax crassispinus inhabit mostly cavities in wood and hollow acorns. Typically in the field, nest sites that can be used by the ant are a limited resource. In a field experiment, it was investigated whether the ants prefer a specific size of nest, when different ones are available. In July 2011, a total of 160 artificial nests were placed in a beech-pine forest. Four artificial nests (pieces of wood with volume cavities, ca 415, 605, 730, and 980 mm(3), respectively) were located on each square meter of the experimental plot. One year later, shortly before the emergence of new sexuals, the nests were collected. In July 2012, colonies inhabited more frequently bigger nests. Among queenright colonies, the ones which inhabited bigger nests had more workers. However, there was no relationship between volume of nest and number of workers for queenless colonies. Queenright colonies from bigger nests produced more sexual individuals, but there was no correlation between number of workers and sex allocation ratio, or between volume of nest and sex allocation ratio. In a laboratory experiment where ant colonies were kept in 470 and 860 mm(3) nests, larger colonies allocated more energy to produce sexual individuals. The results of this study show the selectivity of T. crassispinus ants regarding the size of nest cavity, and that the nest volume has an impact on life history parameters.

No MeSH data available.


Related in: MedlinePlus

Shape of the plexiglass frames used in laboratory to make artificial nest chambers for colonies of ant Temnothorax crassispinus; the nest chambers were of different lengths, and hence in volume. The thickness of the frames was 3 mm
© Copyright Policy - OpenAccess
Related In: Results  -  Collection


getmorefigures.php?uid=PMC4291514&req=5

Fig1: Shape of the plexiglass frames used in laboratory to make artificial nest chambers for colonies of ant Temnothorax crassispinus; the nest chambers were of different lengths, and hence in volume. The thickness of the frames was 3 mm

Mentions: Colonies were transferred to square Petri dishes (10.2 cm × 10.2 cm × 1.9 cm) with a thin plaster base and an artificial nest chamber placed on top. Each nest chamber used in the laboratory was made of a 3 mm thick, fittingly carved plexiglass frame (Fig. 1), sandwiched between two microscope slides or two ½ microscope slides. A piece of cardboard providing the base for the nest was placed between the bottom microscope slide and the plexiglass form. The whole nest was coated with a piece of a red translucent filter from above. All nest chambers used had the same entrances and were of the same shape, differing only in cavity length, and hence in volume; the nests with plexiglass frames fitted between microscope slides were ca. 1,760 mm3 in volume, whereas those with plexiglass frames fitted between ½ microscope slides included smaller ones of ca. 470 mm3 and larger ones of ca. 860 mm3. Ants from the nests made of 45 mm long dowels were transferred to Petri dishes containing 470 mm3 artificial chambers, whilst those from the nests made of 60 and 70 mm long dowels to 860 mm3 chambers, and those from 90 mm long dowels—to 1,760 mm3 chambers. Each colony was placed in a separate Petri dish. The dishes were kept in a Pol-Eko ST 1 thermostatic cabinet maintaining a daily cycle: 14 h of “day” in a temperature of 27 °C and 10 h of “night” in 17 °C. Ants were fed twice a week with frozen fruit flies Drosophila hydei and honey.Fig. 1


The cavity-nest ant Temnothorax crassispinus prefers larger nests.

Mitrus S - Insectes Soc (2014)

Shape of the plexiglass frames used in laboratory to make artificial nest chambers for colonies of ant Temnothorax crassispinus; the nest chambers were of different lengths, and hence in volume. The thickness of the frames was 3 mm
© Copyright Policy - OpenAccess
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC4291514&req=5

Fig1: Shape of the plexiglass frames used in laboratory to make artificial nest chambers for colonies of ant Temnothorax crassispinus; the nest chambers were of different lengths, and hence in volume. The thickness of the frames was 3 mm
Mentions: Colonies were transferred to square Petri dishes (10.2 cm × 10.2 cm × 1.9 cm) with a thin plaster base and an artificial nest chamber placed on top. Each nest chamber used in the laboratory was made of a 3 mm thick, fittingly carved plexiglass frame (Fig. 1), sandwiched between two microscope slides or two ½ microscope slides. A piece of cardboard providing the base for the nest was placed between the bottom microscope slide and the plexiglass form. The whole nest was coated with a piece of a red translucent filter from above. All nest chambers used had the same entrances and were of the same shape, differing only in cavity length, and hence in volume; the nests with plexiglass frames fitted between microscope slides were ca. 1,760 mm3 in volume, whereas those with plexiglass frames fitted between ½ microscope slides included smaller ones of ca. 470 mm3 and larger ones of ca. 860 mm3. Ants from the nests made of 45 mm long dowels were transferred to Petri dishes containing 470 mm3 artificial chambers, whilst those from the nests made of 60 and 70 mm long dowels to 860 mm3 chambers, and those from 90 mm long dowels—to 1,760 mm3 chambers. Each colony was placed in a separate Petri dish. The dishes were kept in a Pol-Eko ST 1 thermostatic cabinet maintaining a daily cycle: 14 h of “day” in a temperature of 27 °C and 10 h of “night” in 17 °C. Ants were fed twice a week with frozen fruit flies Drosophila hydei and honey.Fig. 1

Bottom Line: Queenright colonies from bigger nests produced more sexual individuals, but there was no correlation between number of workers and sex allocation ratio, or between volume of nest and sex allocation ratio.In a laboratory experiment where ant colonies were kept in 470 and 860 mm(3) nests, larger colonies allocated more energy to produce sexual individuals.The results of this study show the selectivity of T. crassispinus ants regarding the size of nest cavity, and that the nest volume has an impact on life history parameters.

View Article: PubMed Central - PubMed

Affiliation: Laboratory of Evolution and Animal Ecology, Department of Biosystematics, Opole University, Oleska 22, 45-052 Opole, Poland.

ABSTRACT

Colonies of the ant Temnothorax crassispinus inhabit mostly cavities in wood and hollow acorns. Typically in the field, nest sites that can be used by the ant are a limited resource. In a field experiment, it was investigated whether the ants prefer a specific size of nest, when different ones are available. In July 2011, a total of 160 artificial nests were placed in a beech-pine forest. Four artificial nests (pieces of wood with volume cavities, ca 415, 605, 730, and 980 mm(3), respectively) were located on each square meter of the experimental plot. One year later, shortly before the emergence of new sexuals, the nests were collected. In July 2012, colonies inhabited more frequently bigger nests. Among queenright colonies, the ones which inhabited bigger nests had more workers. However, there was no relationship between volume of nest and number of workers for queenless colonies. Queenright colonies from bigger nests produced more sexual individuals, but there was no correlation between number of workers and sex allocation ratio, or between volume of nest and sex allocation ratio. In a laboratory experiment where ant colonies were kept in 470 and 860 mm(3) nests, larger colonies allocated more energy to produce sexual individuals. The results of this study show the selectivity of T. crassispinus ants regarding the size of nest cavity, and that the nest volume has an impact on life history parameters.

No MeSH data available.


Related in: MedlinePlus