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en Hit the road Jane! Roads decrease the relatedness for females lesser horseshoe bats. -
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del recurso Acceso al recurso a2026-06-25
(anteriormente2026-06-23
) en Hit the road Jane! Roads decrease the relatedness for females lesser horseshoe bats.
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| 81 | "name": "37307927-6665-58ae-bd66-01a2a7c42513", | 95 | "name": "37307927-6665-58ae-bd66-01a2a7c42513", | ||
| 82 | "notes": "The understanding of how human-induced habitat disturbance | 96 | "notes": "The understanding of how human-induced habitat disturbance | ||
| 83 | shapes the contemporary population structure and gene flow at | 97 | shapes the contemporary population structure and gene flow at | ||
| 84 | fine-spatial scale is key for adequate management of species with | 98 | fine-spatial scale is key for adequate management of species with | ||
| 85 | small and fragmented populations and with limited dispersal abilities. | 99 | small and fragmented populations and with limited dispersal abilities. | ||
| 86 | To date there are few studies focusing on how barriers (e.g. roads, | 100 | To date there are few studies focusing on how barriers (e.g. roads, | ||
| 87 | habitat fragmentation) might influence gene flow at fine-scales. Roads | 101 | habitat fragmentation) might influence gene flow at fine-scales. Roads | ||
| 88 | are known for causing millions of roadkill severy year and for causing | 102 | are known for causing millions of roadkill severy year and for causing | ||
| 89 | movement disruptions mainly for species with low dispersal abilities, | 103 | movement disruptions mainly for species with low dispersal abilities, | ||
| 90 | thus changing the genetic structure of these populations. Some bat | 104 | thus changing the genetic structure of these populations. Some bat | ||
| 91 | species, despite the high potential for dispersal, may show low | 105 | species, despite the high potential for dispersal, may show low | ||
| 92 | dispersal movements due to high flight costs, which combined with a | 106 | dispersal movements due to high flight costs, which combined with a | ||
| 93 | high vulnerability to roadkills, can have a strong effect on | 107 | high vulnerability to roadkills, can have a strong effect on | ||
| 94 | population structure. Moreover, differential sex-specific dispersal, | 108 | population structure. Moreover, differential sex-specific dispersal, | ||
| 95 | often biased towards males is commonly observed on bat populations. | 109 | often biased towards males is commonly observed on bat populations. | ||
| 96 | Thus, we expect that females will possess strong local affinities, | 110 | Thus, we expect that females will possess strong local affinities, | ||
| 97 | whereas males may act as genetic mediators among colonies. In this | 111 | whereas males may act as genetic mediators among colonies. In this | ||
| 98 | study, we investigated how landscape features drive the gene flow and | 112 | study, we investigated how landscape features drive the gene flow and | ||
| 99 | sex-specific relatedness structure on a lesser horseshoe bat | 113 | sex-specific relatedness structure on a lesser horseshoe bat | ||
| 100 | (Rhinolophus hipposideros) population. We combined multiple | 114 | (Rhinolophus hipposideros) population. We combined multiple | ||
| 101 | regressions on genetic distance matrices and spatially explicit | 115 | regressions on genetic distance matrices and spatially explicit | ||
| 102 | analysis to fit models of genetic individuals- relatedness to | 116 | analysis to fit models of genetic individuals- relatedness to | ||
| 103 | landscape resistance surfaces. Genotyping involved 2,837 SNPs and 327 | 117 | landscape resistance surfaces. Genotyping involved 2,837 SNPs and 327 | ||
| 104 | bat samples collected across a Mediterranean agroforestry system of | 118 | bat samples collected across a Mediterranean agroforestry system of | ||
| 105 | southern Portugal. Our analysis based on relatedness structure | 119 | southern Portugal. Our analysis based on relatedness structure | ||
| 106 | supported the male-biased dispersal hypothesis. Females are thought to | 120 | supported the male-biased dispersal hypothesis. Females are thought to | ||
| 107 | be philopatric, whereas males display uniform levels of relatedness | 121 | be philopatric, whereas males display uniform levels of relatedness | ||
| 108 | throughout the landscape. Furthermore, we demonstrated that the effect | 122 | throughout the landscape. Furthermore, we demonstrated that the effect | ||
| 109 | of the landscape features could also be sex-specific. The relatedness | 123 | of the landscape features could also be sex-specific. The relatedness | ||
| 110 | analyses showed that the female\u00b4 colonies bisected by roads were | 124 | analyses showed that the female\u00b4 colonies bisected by roads were | ||
| 111 | less related between themselves than to those where no roads were | 125 | less related between themselves than to those where no roads were | ||
| 112 | present. In fact, relatedness among female\u2019 colonies was | 126 | present. In fact, relatedness among female\u2019 colonies was | ||
| 113 | negatively correlated with proximity of roads, unlike males. However, | 127 | negatively correlated with proximity of roads, unlike males. However, | ||
| 114 | the long-generation time for lesser of horseshoe bat, jointly with | 128 | the long-generation time for lesser of horseshoe bat, jointly with | ||
| 115 | time lag since the road construction may not be sufficient to detect a | 129 | time lag since the road construction may not be sufficient to detect a | ||
| 116 | clear genetic signal of isolation. Thus, main finding of presented | 130 | clear genetic signal of isolation. Thus, main finding of presented | ||
| 117 | study is that the roads reduced but did not halt the gene flow, | 131 | study is that the roads reduced but did not halt the gene flow, | ||
| 118 | although they may be major drivers of contemporary genetic population | 132 | although they may be major drivers of contemporary genetic population | ||
| 119 | structure with medium to long-term consequences on the local bat | 133 | structure with medium to long-term consequences on the local bat | ||
| 120 | populations. Furthermore, our results yield evidence that unsuitable | 134 | populations. Furthermore, our results yield evidence that unsuitable | ||
| 121 | habitat, such as presence of agricultural areas, is important factor | 135 | habitat, such as presence of agricultural areas, is important factor | ||
| 122 | mediating population connectivity between colonies. This study | 136 | mediating population connectivity between colonies. This study | ||
| 123 | underscores the potential of conducting sex-specific analysis by | 137 | underscores the potential of conducting sex-specific analysis by | ||
| 124 | identifying landscape elements that differentially promote or impede | 138 | identifying landscape elements that differentially promote or impede | ||
| 125 | functional connectivity between sexes, particularly when studying | 139 | functional connectivity between sexes, particularly when studying | ||
| 126 | species with different sex-dispersal abilities, as may uncover | 140 | species with different sex-dispersal abilities, as may uncover | ||
| 127 | processes that may otherwise remain cryptic. Our findings are | 141 | processes that may otherwise remain cryptic. Our findings are | ||
| 128 | important for lesser horseshoe bat conservation, road planning schemes | 142 | important for lesser horseshoe bat conservation, road planning schemes | ||
| 129 | and habitat management, due to the threatened conservation status and | 143 | and habitat management, due to the threatened conservation status and | ||
| 130 | species-specific traits (e.g. low flying, highroad mortality), that | 144 | species-specific traits (e.g. low flying, highroad mortality), that | ||
| 131 | increases the risk of road barrier effect. The strong effect of roads | 145 | increases the risk of road barrier effect. The strong effect of roads | ||
| 132 | at fine-scale on the contemporary genetic structure shows that | 146 | at fine-scale on the contemporary genetic structure shows that | ||
| 133 | effective management measures are required to increase across-roads | 147 | effective management measures are required to increase across-roads | ||
| 134 | connectivity allowing to preserve high survival rates of breeding | 148 | connectivity allowing to preserve high survival rates of breeding | ||
| 135 | females and maintaining continuous exchange individuals between | 149 | females and maintaining continuous exchange individuals between | ||
| 136 | colonies.", | 150 | colonies.", | ||
| 137 | "notes_translated": { | 151 | "notes_translated": { | ||
| 138 | "en": "The understanding of how human-induced habitat disturbance | 152 | "en": "The understanding of how human-induced habitat disturbance | ||
| 139 | shapes the contemporary population structure and gene flow at | 153 | shapes the contemporary population structure and gene flow at | ||
| 140 | fine-spatial scale is key for adequate management of species with | 154 | fine-spatial scale is key for adequate management of species with | ||
| 141 | small and fragmented populations and with limited dispersal abilities. | 155 | small and fragmented populations and with limited dispersal abilities. | ||
| 142 | To date there are few studies focusing on how barriers (e.g. roads, | 156 | To date there are few studies focusing on how barriers (e.g. roads, | ||
| 143 | habitat fragmentation) might influence gene flow at fine-scales. Roads | 157 | habitat fragmentation) might influence gene flow at fine-scales. Roads | ||
| 144 | are known for causing millions of roadkill severy year and for causing | 158 | are known for causing millions of roadkill severy year and for causing | ||
| 145 | movement disruptions mainly for species with low dispersal abilities, | 159 | movement disruptions mainly for species with low dispersal abilities, | ||
| 146 | thus changing the genetic structure of these populations. Some bat | 160 | thus changing the genetic structure of these populations. Some bat | ||
| 147 | species, despite the high potential for dispersal, may show low | 161 | species, despite the high potential for dispersal, may show low | ||
| 148 | dispersal movements due to high flight costs, which combined with a | 162 | dispersal movements due to high flight costs, which combined with a | ||
| 149 | high vulnerability to roadkills, can have a strong effect on | 163 | high vulnerability to roadkills, can have a strong effect on | ||
| 150 | population structure. Moreover, differential sex-specific dispersal, | 164 | population structure. Moreover, differential sex-specific dispersal, | ||
| 151 | often biased towards males is commonly observed on bat populations. | 165 | often biased towards males is commonly observed on bat populations. | ||
| 152 | Thus, we expect that females will possess strong local affinities, | 166 | Thus, we expect that females will possess strong local affinities, | ||
| 153 | whereas males may act as genetic mediators among colonies. In this | 167 | whereas males may act as genetic mediators among colonies. In this | ||
| 154 | study, we investigated how landscape features drive the gene flow and | 168 | study, we investigated how landscape features drive the gene flow and | ||
| 155 | sex-specific relatedness structure on a lesser horseshoe bat | 169 | sex-specific relatedness structure on a lesser horseshoe bat | ||
| 156 | (Rhinolophus hipposideros) population. We combined multiple | 170 | (Rhinolophus hipposideros) population. We combined multiple | ||
| 157 | regressions on genetic distance matrices and spatially explicit | 171 | regressions on genetic distance matrices and spatially explicit | ||
| 158 | analysis to fit models of genetic individuals- relatedness to | 172 | analysis to fit models of genetic individuals- relatedness to | ||
| 159 | landscape resistance surfaces. Genotyping involved 2,837 SNPs and 327 | 173 | landscape resistance surfaces. Genotyping involved 2,837 SNPs and 327 | ||
| 160 | bat samples collected across a Mediterranean agroforestry system of | 174 | bat samples collected across a Mediterranean agroforestry system of | ||
| 161 | southern Portugal. Our analysis based on relatedness structure | 175 | southern Portugal. Our analysis based on relatedness structure | ||
| 162 | supported the male-biased dispersal hypothesis. Females are thought to | 176 | supported the male-biased dispersal hypothesis. Females are thought to | ||
| 163 | be philopatric, whereas males display uniform levels of relatedness | 177 | be philopatric, whereas males display uniform levels of relatedness | ||
| 164 | throughout the landscape. Furthermore, we demonstrated that the effect | 178 | throughout the landscape. Furthermore, we demonstrated that the effect | ||
| 165 | of the landscape features could also be sex-specific. The relatedness | 179 | of the landscape features could also be sex-specific. The relatedness | ||
| 166 | analyses showed that the female\u00b4 colonies bisected by roads were | 180 | analyses showed that the female\u00b4 colonies bisected by roads were | ||
| 167 | less related between themselves than to those where no roads were | 181 | less related between themselves than to those where no roads were | ||
| 168 | present. In fact, relatedness among female\u2019 colonies was | 182 | present. In fact, relatedness among female\u2019 colonies was | ||
| 169 | negatively correlated with proximity of roads, unlike males. However, | 183 | negatively correlated with proximity of roads, unlike males. However, | ||
| 170 | the\nlong-generation time for lesser of horseshoe bat, jointly with | 184 | the\nlong-generation time for lesser of horseshoe bat, jointly with | ||
| 171 | time lag since the road construction may not be sufficient to detect a | 185 | time lag since the road construction may not be sufficient to detect a | ||
| 172 | clear genetic signal of isolation. Thus, main finding of presented | 186 | clear genetic signal of isolation. Thus, main finding of presented | ||
| 173 | study is that the roads reduced but did not halt the gene flow, | 187 | study is that the roads reduced but did not halt the gene flow, | ||
| 174 | although they may be major drivers of contemporary genetic population | 188 | although they may be major drivers of contemporary genetic population | ||
| 175 | structure with medium to long-term consequences on the local bat | 189 | structure with medium to long-term consequences on the local bat | ||
| 176 | populations. Furthermore, our results yield evidence that unsuitable | 190 | populations. Furthermore, our results yield evidence that unsuitable | ||
| 177 | habitat, such as presence of agricultural areas, is important factor | 191 | habitat, such as presence of agricultural areas, is important factor | ||
| 178 | mediating population connectivity between colonies. This study | 192 | mediating population connectivity between colonies. This study | ||
| 179 | underscores the potential of conducting sex-specific analysis by | 193 | underscores the potential of conducting sex-specific analysis by | ||
| 180 | identifying landscape elements that differentially promote or impede | 194 | identifying landscape elements that differentially promote or impede | ||
| 181 | functional connectivity between sexes, particularly when studying | 195 | functional connectivity between sexes, particularly when studying | ||
| 182 | species with different sex-dispersal abilities, as may uncover | 196 | species with different sex-dispersal abilities, as may uncover | ||
| 183 | processes that may otherwise remain cryptic. Our findings are | 197 | processes that may otherwise remain cryptic. Our findings are | ||
| 184 | important for lesser horseshoe bat conservation, road planning schemes | 198 | important for lesser horseshoe bat conservation, road planning schemes | ||
| 185 | and habitat management, due to the threatened conservation status and | 199 | and habitat management, due to the threatened conservation status and | ||
| 186 | species-specific traits (e.g. low flying, highroad mortality), that | 200 | species-specific traits (e.g. low flying, highroad mortality), that | ||
| 187 | increases the risk of road barrier effect. The strong effect of roads | 201 | increases the risk of road barrier effect. The strong effect of roads | ||
| 188 | at fine-scale on the contemporary genetic structure shows that | 202 | at fine-scale on the contemporary genetic structure shows that | ||
| 189 | effective management measures are required to increase across-roads | 203 | effective management measures are required to increase across-roads | ||
| 190 | connectivity allowing to preserve high survival rates of breeding | 204 | connectivity allowing to preserve high survival rates of breeding | ||
| 191 | females and maintaining continuous exchange individuals between | 205 | females and maintaining continuous exchange individuals between | ||
| 192 | colonies.", | 206 | colonies.", | ||
| 193 | "es": "The understanding of how human-induced habitat disturbance | 207 | "es": "The understanding of how human-induced habitat disturbance | ||
| 194 | shapes the contemporary population structure and gene flow at | 208 | shapes the contemporary population structure and gene flow at | ||
| 195 | fine-spatial scale is key for adequate management of species with | 209 | fine-spatial scale is key for adequate management of species with | ||
| 196 | small and fragmented populations and with limited dispersal abilities. | 210 | small and fragmented populations and with limited dispersal abilities. | ||
| 197 | To date there are few studies focusing on how barriers (e.g. roads, | 211 | To date there are few studies focusing on how barriers (e.g. roads, | ||
| 198 | habitat fragmentation) might influence gene flow at fine-scales. Roads | 212 | habitat fragmentation) might influence gene flow at fine-scales. Roads | ||
| 199 | are known for causing millions of roadkill severy year and for causing | 213 | are known for causing millions of roadkill severy year and for causing | ||
| 200 | movement disruptions mainly for species with low dispersal abilities, | 214 | movement disruptions mainly for species with low dispersal abilities, | ||
| 201 | thus changing the genetic structure of these populations. Some bat | 215 | thus changing the genetic structure of these populations. Some bat | ||
| 202 | species, despite the high potential for dispersal, may show low | 216 | species, despite the high potential for dispersal, may show low | ||
| 203 | dispersal movements due to high flight costs, which combined with a | 217 | dispersal movements due to high flight costs, which combined with a | ||
| 204 | high vulnerability to roadkills, can have a strong effect on | 218 | high vulnerability to roadkills, can have a strong effect on | ||
| 205 | population structure. Moreover, differential sex-specific dispersal, | 219 | population structure. Moreover, differential sex-specific dispersal, | ||
| 206 | often biased towards males is commonly observed on bat populations. | 220 | often biased towards males is commonly observed on bat populations. | ||
| 207 | Thus, we expect that females will possess strong local affinities, | 221 | Thus, we expect that females will possess strong local affinities, | ||
| 208 | whereas males may act as genetic mediators among colonies. In this | 222 | whereas males may act as genetic mediators among colonies. In this | ||
| 209 | study, we investigated how landscape features drive the gene flow and | 223 | study, we investigated how landscape features drive the gene flow and | ||
| 210 | sex-specific relatedness structure on a lesser horseshoe bat | 224 | sex-specific relatedness structure on a lesser horseshoe bat | ||
| 211 | (Rhinolophus hipposideros) population. We combined multiple | 225 | (Rhinolophus hipposideros) population. We combined multiple | ||
| 212 | regressions on genetic distance matrices and spatially explicit | 226 | regressions on genetic distance matrices and spatially explicit | ||
| 213 | analysis to fit models of genetic individuals- relatedness to | 227 | analysis to fit models of genetic individuals- relatedness to | ||
| 214 | landscape resistance surfaces. Genotyping involved 2,837 SNPs and 327 | 228 | landscape resistance surfaces. Genotyping involved 2,837 SNPs and 327 | ||
| 215 | bat samples collected across a Mediterranean agroforestry system of | 229 | bat samples collected across a Mediterranean agroforestry system of | ||
| 216 | southern Portugal. Our analysis based on relatedness structure | 230 | southern Portugal. Our analysis based on relatedness structure | ||
| 217 | supported the male-biased dispersal hypothesis. Females are thought to | 231 | supported the male-biased dispersal hypothesis. Females are thought to | ||
| 218 | be philopatric, whereas males display uniform levels of relatedness | 232 | be philopatric, whereas males display uniform levels of relatedness | ||
| 219 | throughout the landscape. Furthermore, we demonstrated that the effect | 233 | throughout the landscape. Furthermore, we demonstrated that the effect | ||
| 220 | of the landscape features could also be sex-specific. The relatedness | 234 | of the landscape features could also be sex-specific. The relatedness | ||
| 221 | analyses showed that the female\u00b4 colonies bisected by roads were | 235 | analyses showed that the female\u00b4 colonies bisected by roads were | ||
| 222 | less related between themselves than to those where no roads were | 236 | less related between themselves than to those where no roads were | ||
| 223 | present. In fact, relatedness among female\u2019 colonies was | 237 | present. In fact, relatedness among female\u2019 colonies was | ||
| 224 | negatively correlated with proximity of roads, unlike males. However, | 238 | negatively correlated with proximity of roads, unlike males. However, | ||
| 225 | the long-generation time for lesser of horseshoe bat, jointly with | 239 | the long-generation time for lesser of horseshoe bat, jointly with | ||
| 226 | time lag since the road construction may not be sufficient to detect a | 240 | time lag since the road construction may not be sufficient to detect a | ||
| 227 | clear genetic signal of isolation. Thus, main finding of presented | 241 | clear genetic signal of isolation. Thus, main finding of presented | ||
| 228 | study is that the roads reduced but did not halt the gene flow, | 242 | study is that the roads reduced but did not halt the gene flow, | ||
| 229 | although they may be major drivers of contemporary genetic population | 243 | although they may be major drivers of contemporary genetic population | ||
| 230 | structure with medium to long-term consequences on the local bat | 244 | structure with medium to long-term consequences on the local bat | ||
| 231 | populations. Furthermore, our results yield evidence that unsuitable | 245 | populations. Furthermore, our results yield evidence that unsuitable | ||
| 232 | habitat, such as presence of agricultural areas, is important factor | 246 | habitat, such as presence of agricultural areas, is important factor | ||
| 233 | mediating population connectivity between colonies. This study | 247 | mediating population connectivity between colonies. This study | ||
| 234 | underscores the potential of conducting sex-specific analysis by | 248 | underscores the potential of conducting sex-specific analysis by | ||
| 235 | identifying landscape elements that differentially promote or impede | 249 | identifying landscape elements that differentially promote or impede | ||
| 236 | functional connectivity between sexes, particularly when studying | 250 | functional connectivity between sexes, particularly when studying | ||
| 237 | species with different sex-dispersal abilities, as may uncover | 251 | species with different sex-dispersal abilities, as may uncover | ||
| 238 | processes that may otherwise remain cryptic. Our findings are | 252 | processes that may otherwise remain cryptic. Our findings are | ||
| 239 | important for lesser horseshoe bat conservation, road planning schemes | 253 | important for lesser horseshoe bat conservation, road planning schemes | ||
| 240 | and habitat management, due to the threatened conservation status and | 254 | and habitat management, due to the threatened conservation status and | ||
| 241 | species-specific traits (e.g. low flying, highroad mortality), that | 255 | species-specific traits (e.g. low flying, highroad mortality), that | ||
| 242 | increases the risk of road barrier effect. The strong effect of roads | 256 | increases the risk of road barrier effect. The strong effect of roads | ||
| 243 | at fine-scale on the contemporary genetic structure shows that | 257 | at fine-scale on the contemporary genetic structure shows that | ||
| 244 | effective management measures are required to increase across-roads | 258 | effective management measures are required to increase across-roads | ||
| 245 | connectivity allowing to preserve high survival rates of breeding | 259 | connectivity allowing to preserve high survival rates of breeding | ||
| 246 | females and maintaining continuous exchange individuals between | 260 | females and maintaining continuous exchange individuals between | ||
| 247 | colonies." | 261 | colonies." | ||
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