Showing papers on "Lasius published in 1987"
TL;DR: A series of esters of C 8 -C 13 fatty acids formed with C 10 -C 12 straight chain alcohols, representing 3.7% of the glandular contents, was found in the Dufour gland of workers of the formicine ant Lasius niger.
27 citations
TL;DR: The sex ratio of investment (SRI) or male investment frequencies (IFs) were estimated at the population and colony level in populations of L. alienus, L. niger and their hybrids and more simlarity was found than between compatibility of these data with predictions dependent on the caste or intra (in the instance of workers) and inter caste conflict as determinants of the IF.
Abstract: The sex ratio of investment (SRI) or male investment frequencies (IFs) were estimated at the population and colony level in populations ofL. alienus, L. niger and their hybrids. More simlarity betweenL. alienus IFs and the hybrid IFs than between compatibility of these data with predictions dependent on the caste or intra (in the instance of workers) and inter caste conflict as determinants of the IF. An estimate of intra colonial, worker relatedness in aL. alienus population was significantly greater than zero. Whilst being consistent with the monogynous structure attributed to this species the 95% confidence limits of the relatedness value would also accommodate a degree of polygyny and/or multipe mating.
5 citations
01 Jul 1987
TL;DR: Dispersion patterns of ant nests were analysed by the m-m regression method (IWAO. 1968) and the covariance method (KERSHAW, 1960) in a cool-temperate woodland of Tomakomai Experiment Forest of Hokkaido University.
Abstract: Dispersion patterns of ant nests were analysed by the m-m regression method (IWAO. 1968) and the covariance method (KERSHAW, 1960) in a cool-temperate woodland of Tomakomai Experiment Forest of Hokkaido University. Aphaenogaster smythiesi japonica and Myrmica ruginodis seemed most territorial, since their nests were most dispersed and they were in negative association with some species. Lasius niger was negatively associated with some ants but their nests were a little more aggregated than those of the former two species, because they often formed polydomous colonies. Nests of Myrmecina graminicola nipponica were remarkably aggregated partly due to inhabiting microhabitats which were patchily distributed in the woods surveyed. Tiny ants Leptothorax sp. and Pheidole fervida showed nearly random or slightly aggregated distribution of con specific nests and the nil association with other species.
5 citations
Journal Article•
TL;DR: The ant of Jiri mountain consisted of 16 species in Formicinae, 13 species in Myrmicinae and 2 species in Ponerinae; the vertical distribution of C. atrox was ranged from 800m to 1,800m.
Abstract: Vertical distribution of ants were studied in Jiri mountain by collecting 15 times at 42 sites for 3 years since 1984. 31 species of 16 genera in 3 subfamilies were collected during the survey. The following 6 species, i.e., Formica japonica, F. lemani, Lasius niger, L. alienus, Pheidole fervida and Myrmica ruginodis were dorminant one, but 9 species such as Leptothorax congruus, Pheidole nodus, Aphanogaster japonica, Jollenhovia emeryi, Camponotus tokioensis, Polyrhachis lamellidens, Phagiolepsis mandjurica, myrmica yessensis and M. sulcinodis were rare species. The ant of Jiri mountain consisted of 16 species in Formicinae, 13 species in Myrmicinae and 2 species in Ponerinae. Ponerinae was distbriuted as far as 1,800m, but Myrmicinae and Formicinae to 1,915m. Only 8 species-Myrmica ruginosis, Myrmica sp., M. yessensis, M. sulcinodis, Leptothorax acevorum, Formica japonica, F. lemani and Camponotus japonicus-were collected at the submit of Jiri mountain, Cheonwangbong. The vertical distribution of C. atrox was ranged from 800m to 1,800m.
3 citations