Morphological patterns and community organization in leaf-litter ant assemblages

2010 ◽  
Vol 80 (1) ◽  
pp. 107-124 ◽  
Author(s):  
Rogério R. Silva ◽  
Carlos Roberto F. Brandão
Keyword(s):  
Leaf Litter ◽  
Community Organization ◽  
Ant Assemblages ◽  
Morphological Patterns

scholarly journals Influence of the vegetation mosaic on ant (Formicidae: Hymenoptera) distributions in the Northern Brazilian Pantanal

Sociobiology ◽  
2015 ◽  
Vol 62 (3) ◽  
pp. 382 ◽  
Author(s):  
Eliandra Meurer ◽  
Leandro Denis Battirola ◽  
Jacques Hubert Charles Delabie ◽  
Marinez Isaac Marques
Keyword(s):  
Leaf Litter ◽  
Deciduous Forest ◽  
Sensu Stricto ◽  
Pitfall Traps ◽  
Floodplain Management ◽  
Species Occurrence ◽  
Mato Grosso ◽  
Ant Assemblages ◽  
Brazilian Pantanal ◽  
Vegetation Mosaic

We examined how vegetation mosaic influences distribution of the edaphic ant (Formicidae) community in the northern part of the Pantanal in Cáceres, State of Mato Grosso, Brazil. Plant formations (hereafter habitats) that characterize this area include several savanna types, such as: Cerrado sensu stricto, Cerradão, Semi-deciduous forest, Termite savanna, Open fields and Cerrado field/carandazal. Pitfall traps were placed in ten 250 m transects each one separated by 1 km, within an area of 2 x 5 km (following RAPELD methodology). Five traps at intervals of 50 m were placed along each transect, in September and December 2008. Forty-four ant species were collected. leaf litter predicted ant presence and influenced species occurrence in the different habitats. Pantanal habitats are very different structurally from one to another, which has have resulted in areas with very specific ant assemblages. The understanding of the antcommunity structure in these areas is fundamental to floodplain management.

A taxonomic revision of the Neotropical myrmicine ant genus Lachnomyrmex Wheeler (Hymenoptera: Formicidae)

Zootaxa ◽  
2008 ◽  
Vol 1890 (1) ◽  
pp. 1 ◽  
Author(s):  
RODRIGO M. FEITOSA ◽  
CARLOS ROBERTO F. BRANDÃO
Keyword(s):  
High Resolution ◽  
South America ◽  
Leaf Litter ◽  
Taxonomic Revision ◽  
Geographical Data ◽  
Distribution Maps ◽  
Generic Description ◽  
Wet Forests ◽  
First Time ◽  
Morphological Patterns

The Neotropical ant genus Lachnomyrmex Wheeler, 1910 is revised for the first time. A revised generic description is provided for workers and gynes; males remain unknown. Morphological patterns combined with geographical data led to the recognition of 16 species, of which 10 are here described as new: L. amazonicus sp. n., L. fernandezi sp. n., L. grandis Fernández & Baena, L. haskinsi Smith, L. lattkei sp. n., L. longinodus Fernández & Baena, L. longinoi sp. n., L. mackayi sp. n., L. nordestinus sp. n., L. pilosus Weber, L. laticeps sp. n., L. platynodus sp. n., L. plaumanni Borgmeier, L. regularis sp. n., L. scrobiculatus Wheeler, and L. victori sp. n. The gynes of L. grandis, L. haskinsi, and L. pilosus are described for the first time. Illustrated identification keys for workers, distribution maps, and high resolution illustrations are supplied for all species. Some Lachnomyrmex species are relatively common in the leaf-litter of submontane wet forests in Central and South America; others remain known by very few individuals. The relatively small and apparently monogynic Lachnomyrmex colonies inhabit small nests in the ground, among rotten leaves and inside fallen logs. Workers generally forage alone on the ground or within the leaf litter, but have been recorded also on tree trunks, and apparently do not recruit nestmates.

Convergence in Morphological Patterns and Community Organization between Old and New World Rodent Guilds

2001 ◽  
Vol 158 (5) ◽  
pp. 484-495 ◽  
Author(s):  
Ariela Ben‐Moshe ◽  
Tamar Dayan ◽  
Daniel Simberloff
Keyword(s):  
New World ◽  
Community Organization ◽  
Morphological Patterns

Short-term changes in the structure of ant assemblages in a Guinean savanna under differing fire regimes at Lamto Scientific Reserve, Côte d'Ivoire

2018 ◽  
Vol 34 (5) ◽  
pp. 326-335
Author(s):  
Mouhamadou Kone ◽  
Kanvaly Dosso ◽  
Christine Dakele Yode ◽  
Akissi Evelyne Kouakou ◽  
Aya Brigitte N'dri ◽  
...  
Keyword(s):  
Leaf Litter ◽  
Cote D'ivoire ◽  
Côte D’Ivoire ◽  
Fire Regimes ◽  
Habitat Modification ◽  
Cote D’Ivoire ◽  
Ant Assemblages ◽  
Côte D'ivoire ◽  
The Impact ◽  
Seasonal Fires

Abstract:To maintain savanna vegetation, mid-seasonal fire has been applied since 1961 in the Lamto Savanna (Côte d'Ivoire). However, this prescribed fire has not impeded tree encroachment during recent years, nor have its effects on insect assemblages been documented. Also the impact of tree intrusion on insect assemblages is poorly studied in savanna. To prevent tree density increasing, a change in fire regime might be a solution. In this study, we examined the effect of different fire regimes (early, mid-seasonal and late fires) on leaf-litter ant assemblages in order to suggest appropriate measures for preventing tree invasion without having an effect on insect communities. Sampling was implemented by combining pitfall trapping and leaf-litter sampling before and after three different fire regimes, early, mid-seasonal and late fires. While the ant species richness declined after the passage of early and mid-seasonal fires, significantly more species were found in the burnt savanna after the late fire. However, the losses or gains of species due to different fire regimes did not cause severe changes in the ant species composition. Of the functional groups identified, only the generalists and specialist predators were respectively strongly affected by the early and mid-seasonal fires, certainly due to micro-habitat modification. Based on the trends observed in the present study, we suggest sampling other invertebrate fauna in similar savanna plots to find out if other insect groups have similar reactions to the applied fire regimes.

An Ultrastructural Study of the Proliferation Patterns of the Reserve Cells of the Human Cervix Uteri

1972 ◽  
Vol 30 ◽  
pp. 80-81
Author(s):  
Takanori Sohda ◽  
Hiroshi Saito ◽  
Goro Asano ◽  
Katsunari Fukushi ◽  
Katsuya Suzuki ◽  
...  
Keyword(s):  
Ultrastructural Study ◽  
Age Groups ◽  
Point Of View ◽  
University Hospital ◽  
Cervix Uteri ◽  
Morphological Aspect ◽  
Functional Aspect ◽  
Pathological Conditions ◽  
Human Cervix ◽  
Morphological Patterns

Recently, the functional aspect as well as morphological aspect of the reserve cells in the cervix uteri drew much attention in view of the carcinogenesis in squamocolumunar junction. In this communication, the authors elucidate the ultrastructural features of the reserve cells in patients of various age groups visiting our university hospital and affiliated hospital.From conventional light microscopic point of view, the reserve cells tend to be pronounced in various pathological conditions, such as the persisting inflammation, proliferative disorders and irritation of hormones. The morphological patterns of the reserve cells from various stage and degree of irritation were observed.

Community Organization Curriculum Development

1967 ◽  
Author(s):  
Arnulf M. Pins ◽  
Arnold Gurin ◽  
Wyatt C. Jones ◽  
Joan Levin ◽  
Robert Perlmam
Keyword(s):  
Curriculum Development ◽  
Community Organization
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