Table 2. Pteropus giganteus roost tree selection (preferred and avoided species) based on use of a species as a roost tree versus prevalence of the species in surveyed roosts.
Common name | Scientific name | Bangla name | Family | Proportion all trees | Proportion roost trees | P-value* | Preference† |
---|---|---|---|---|---|---|---|
Bamboo | Bambusoideae‡ | bash | Poaceae | 0.099 | 0.201 | <0.0001 | selected |
Raintree/Koroi | Albizia‡ | raintree/koroi/“acacia” | Fabaceae | 0.054 | 0.145 | <0.0001 | selected |
Eucalyptus | Myrtaceae§ | eucalyptus/akashi | Myrtaceae | 0.038 | 0.101 | <0.0001 | selected |
Gajari | Shorea robusta | gajari/shal | Dipterocarpaceae | 0.038 | 0.087 | <0.0001 | selected |
Mehogani | Swietenia mahagoni | mehogani | Meliaceae | 0.134 | 0.071 | <0.0001 | avoided |
Indian Mast Tree | Polyalthia longifolia‡§ | debdaru | Annonaceae | 0.055 | 0.049 | 0.52 | random |
Teak | Tectona grandis‡ | shegun | Lamiaceae | 0.030 | 0.042 | 0.06 | random |
Mango | Mangifera indica‡§ | amm | Anacardiaceae | 0.066 | 0.035 | 0.001 | avoided |
Banyan | Ficus bengalensis‡§ | bot/pakore | Moraceae | 0.009 | 0.033 | <0.0001 | selected |
Kadam | Neolamarckia cadamba | kadam | Rubiaceae | 0.010 | 0.028 | <0.0001 | selected |
Jackfruit | Artocarpus heterophyllus | kathal/chambol | Moraceae | 0.040 | 0.023 | 0.02 | avoided |
Cotton Silk | Ceiba pentandra‡§ | shimul | Malvaceae | 0.011 | 0.023 | 0.001 | selected |
Mabolo/Ebony | Diospyros peregrina§ | gaab | Ebenaceae | 0.041 | 0.020 | 0.01 | avoided |
Beechwood | Gmelina arborea | gamari/pitagora | Lamiaceae | 0.006 | 0.015 | 0.005 | selected |
Mulberry | Morus | jam | Moraceae | 0.014 | 0.010 | 0.42 | random |
Pithraj | Aphanamixis polystachya | pit raj/royna | Meliaceae | 0.036 | 0.006 | <0.0001 | avoided |
Rough Bush | Streblus asper | sheora | Moraceae | 0.014 | 0.006 | 0.07 | random |
Tamarind | Tamarindus indica‡§ | tatul | Fabaceae | 0.004 | 0.006 | 0.46 | random |
Dumur | Ficus carica§ | dumur | Moraceae | 0.011 | 0.004 | 0.09 | random |
Blackboard Tree | Alstonia scholaris‡ | chatim | Apocynaceae | 0.004 | 0.004 | 0.96 | random |
Pitali | Trewia nudiflora‡ | pitali/pithkhuli | Euphorbiaceae | 0.004 | 0.004 | 0.78 | random |
Indian Ash Tree | Lannea coromandelica§ | jigha | Anacardiaceae | 0.009 | 0.003 | 0.10 | random |
Ipil Ipil | Intsia bijuga | ipil ipil | Fabaceae | 0.007 | 0.003 | 0.17 | random |
Indian Rosewood | Dalbergia sissoo‡ | shishu | Fabaceae | 0.005 | 0.003 | 0.47 | random |
Betel Nut | Areca catechu§ | shupari | Arecaceae | 0.104 | 0.001 | <0.0001 | avoided |
Neem | Azadirachta indica§ | neem | Meliaceae | 0.009 | 0.001 | 0.04 | avoided |
Palmyra Palm | Borassus flabellifer‡§ | tal | Arecaceae | 0.006 | 0.001 | 0.12 | random |
Bishop Wood | Bischofia javanica | uriam/puia | Phyllanthaceae | 0.004 | 0.001 | 0.26 | random |
Monkey Jack | Artocarpus lacucha | dewa | Moraceae | 0.003 | 0.001 | 0.38 | random |
Hijol | Barringtonia Acutangula | hijol | Lecythidaceae | 0.003 | 0.001 | 0.48 | random |
Date Palm | Phoenix sylvestris | khejur | Arecaceae | 0.003 | 0.001 | 0.48 | random |
Banana | Musa paradisiaca§ | kala | Musaceae | 0.021 | 0.000 | - | not used |
Coconut Palm | Cocos nucifera‡ | narikel | Arecaceae | 0.012 | 0.000 | - | not used |
Sacred Fig | Ficus religiosa‡§ | peepal | Moraceae | 0.005 | 0.000 | - | not used |
Custard Apple | Annona reticulata§ | ata | Annonaceae | 0.004 | 0.000 | - | not used |
Based on binomial exact test
If the abundance of a tree species within the roost trees was significantly greater than expected based on its abundance within the plots, we considered it a preferred, or “selected” species. Alternatively, if use of the tree species as a roost tree was less than expected based on its general abundance, then we labelled it as an “avoided” species. If there was no significant difference between use as a roost and availability in the plots, then the species was considered “used at random.”
Tree species has been documented in the literature as a Pteropus giganteus roosting site
Tree species has been documented in the literature as a Pteropus giganteus food source