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Theunis Piersma - One of the best experts on this subject based on the ideXlab platform.
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Size, shape and sex differences in three subspecies of Black-tailed Godwits Limosa Limosa
Bird Study, 2020Co-Authors: Bing-run Zhu, Jos C E W Hooijmeijer, Yvonne I. Verkuil, Chris J. Hassell, Tómas G. Gunnarson, Zhengwang Zhang, Theunis PiersmaAbstract:Capsule: Black-tailed Godwits Limosa Limosa show sexual size dimorphism and size differences between the subspecies. The shape varies slightly between the subspecies, but not between the sexes.Aims...
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Primary moult of continental Black-tailed Godwits Limosa Limosa Limosa in the Doñana wetlands, Spain
Bird Study, 2018Co-Authors: Rocío Márquez-ferrando, Nathan R Senner, Jose A Masero, Magdalena Remisiewicz, Rosemarie Kentie, Mo A Verhoeven, Jos C E W Hooijmeijer, Sara Pardal, Mathieu Sarasa, Theunis PiersmaAbstract:Capsule: Most Continental Black-tailed Godwits Limosa Limosa Limosa using the Donana wetlands during post-breeding migration appear to begin moult before they arrive and suspend moult before they migrate onwards to West Africa. Aims: We aim to describe the primary moult strategies and patterns in the Continental Black-tailed Godwits using the Donana wetlands, a major passage and wintering area for waterbirds in southern Spain. Methods: Individual godwits were captured, marked and their primary moult was scored in Donana during the non-breeding season (June–March) in 2011 and 2012. Data from resightings of colour-marked godwits and birds equipped with satellite transmitters were used to estimate stopover duration during post-breeding migration (June–September) to determine if godwits move to West Africa before completing their primary moult. Results: Average primary moult duration was estimated to be 84 days ± 9 se, during 29 June–21 September and did not differ between sexes. Only 2% of individuals were observed with suspended moult. We estimated stopover duration in Donana to be 13 days ± 2 se before migrating to West Africa. Conclusions: Most godwits stage for about two weeks in the Donana wetlands during southward migration, moult their primaries and appear to suspend moult before crossing the Sahara. Others may complete their primary moult in Donana, or elsewhere in Europe and overwinter in Donana where increasing numbers of godwits have been detected in recent years. A few individuals may finish the moult in Donana and migrate to West Africa late in the post-breeding season.
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wetland salinity induces sex dependent carry over effects on the individual performance of a long distance migrant
Scientific Reports, 2017Co-Authors: Jose A Masero, Nathan R Senner, Jose M Abadgomez, Jorge S Gutierrez, Francisco Santiagoquesada, Juan M Sanchezguzman, Theunis PiersmaAbstract:Salinization is having a major impact on wetlands and its biota worldwide. Specifically, many migratory animals that rely on wetlands are increasingly exposed to elevated salinity on their nonbreeding grounds. Experimental evidence suggests that physiological challenges associated with increasing salinity may disrupt self-maintenance processes in these species. Nonetheless, the potential role of salinity as a driver of ecological carry-over effects remains unstudied. Here, we investigated the extent to which the use of saline wetlands during winter – inferred from feather stable isotope values – induces residual effects that carry over and influence physiological traits relevant to fitness in black-tailed godwits Limosa Limosa Limosa on their northward migration. Overwintering males and females were segregated by wetland salinity in West Africa, with females mostly occupying freshwater wetlands. The use of these wetlands along a gradient of salinities was associated with differences in immune responsiveness to phytohaemagglutinin and sized-corrected body mass in godwits staging in southern Europe during northward migration – 3,000 km from the nonbreeding grounds – but in males only. These findings provide a window onto the processes by which wetland salinity can induce carry-over effects and can help predict how migratory species should respond to future climate-induced increases in salinity.
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estimating the size of the dutch breeding population of continental black tailed godwits from 2007 2015 using resighting data from spring staging sites
Ardea, 2016Co-Authors: Rosemarie Kentie, Nathan R Senner, Jose A Masero, Rocio Marquezferrando, Mo A Verhoeven, Jos C E W Hooijmeijer, Jordi Figuerola, Theunis PiersmaAbstract:Over the past 50 years, the population of Continental Black-tailed Godwits Limosa Limosa Limosa breeding of the East Atlantic Flyway has been in steep decline. This decline has previously been documented in trend analyses and six Netherlands-wide count-based population estimates, the last of which was completed in 1999. We provide an updated population size estimate and describe inter-annual fluctuations in the population between 2007 and 2015. To generate these estimates, we integrated a mark-recapture survival analysis with estimates of the densities of colour-marked individuals at migratory staging sites with known proportions of Continental and Icelandic L. l. islandica Black-tailed Godwits within a Bayesian framework. The use of these analytical techniques means that, in contrast with earlier efforts, our estimates are accompanied with confidence intervals, allowing us to estimate the population size with known precision. Using additional information on the breeding destination of 43 godwits equipped...
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Patterns in nuclear and mitochondrial DNA reveal historical and recent isolation in the Black-tailed Godwit (Limosa Limosa).
PloS one, 2014Co-Authors: Krijn B. Trimbos, Theunis Piersma, Camiel Doorenweerd, Ken Kraaijeveld, C.j.m. Musters, Niko M. Groen, Peter De Knijff, Geert R. De SnooAbstract:On the basis of morphological differences, three subspecies of Black-tailed Godwit (Limosa Limosa) have been recognized (L. l. Limosa, L. l. islandica and L. l. melanuroides). In previous studies mitochondrial DNA (mtDNA) sequence data showed minimal genetic divergence between the three subspecies and an absence of sub-structuring within L. l. Limosa. Here, population genetic structure and phylogeographic patterns have been analyzed using COI, HVR1 and HVR2 mtDNA sequence data as well as 12 microsatellite loci (nuDNA). The nuDNA data suggest genetic differentiation between L. l. Limosa from Sweden and The Netherlands, between L. l. Limosa and L. l. islandica, but not between L. l. Limosa and L. l. melanuroides. However, the mtDNA data were not consistent with the nuDNA pattern. mtDNA did support a split between L. l. melanuroides and L. l. Limosa/L. l. islandica and also demonstrated two L. l. Limosa haplotype clusters that were not geographically isolated. This genetic structure can be explained by a scenario of isolation of L. l. melanuroides from L. l. Limosa in Beringia during the Last Glacial Maximum. During the Pleistocene separation of L. l. islandica from L. l. Limosa occurred, followed by colonization of Iceland by the L. l. islandica during the Holocene. Within L. l. Limosa founder events, followed by population expansion, took place during the Holocene also. According to the patterns observed in both markers together and their geographic separation, we propose that the three traditional subspecies indeed represent three separate genetic units.
Nathan R Senner - One of the best experts on this subject based on the ideXlab platform.
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Data_Sheet_1_High Migratory Survival and Highly Variable Migratory Behavior in Black-Tailed Godwits.docx
2019Co-Authors: Nathan R Senner, Jose A Masero, José A. Alves, Rosemarie Kentie, Mo A Verhoeven, Jos C E W Hooijmeijer, José M. Abad-gómez, Ruth A. Howison, A. Jelle H. Loonstra, Afonso RochaAbstract:Few studies have been able to directly measure the seasonal survival rates of migratory species or determine how variable the timing of migration is within individuals and across populations over multiple years. As such, it remains unclear how likely migration is to affect the population dynamics of migratory species and how capable migrants may be of responding to changing environmental conditions within their lifetimes. To address these questions, we used three types of tracking devices to track individual black-tailed godwits from the nominate subspecies (Limosa Limosa Limosa) throughout their annual cycles for up to 5 consecutive years. We found that godwits exhibit considerable inter- and intra-individual variation in their migratory behavior across years. We also found that godwits had generally high survival rates during migration, although survival was reduced during northward flights across the Sahara Desert. These patterns differ from those observed in most other migratory species, suggesting that migration may only be truly dangerous when crossing geographic barriers that lack emergency stopover sites and that the levels of phenotypic flexibility exhibited by some populations may enable them to rapidly respond to changing environmental conditions.
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primary moult of continental black tailed godwits Limosa Limosa Limosa in the donana wetlands spain
Bird Study, 2018Co-Authors: Rocio Marquezferrando, Nathan R Senner, Jose A Masero, Magdalena Remisiewicz, Rosemarie Kentie, Mo A Verhoeven, Jos C E W Hooijmeijer, Sara Pardal, Mathieu SarasaAbstract:Capsule: Most Continental Black-tailed Godwits Limosa Limosa Limosa using the Donana wetlands during post-breeding migration appear to begin moult before they arrive and suspend moult before they m...
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Primary moult of continental Black-tailed Godwits Limosa Limosa Limosa in the Doñana wetlands, Spain
Bird Study, 2018Co-Authors: Rocío Márquez-ferrando, Nathan R Senner, Jose A Masero, Magdalena Remisiewicz, Rosemarie Kentie, Mo A Verhoeven, Jos C E W Hooijmeijer, Sara Pardal, Mathieu Sarasa, Theunis PiersmaAbstract:Capsule: Most Continental Black-tailed Godwits Limosa Limosa Limosa using the Donana wetlands during post-breeding migration appear to begin moult before they arrive and suspend moult before they migrate onwards to West Africa. Aims: We aim to describe the primary moult strategies and patterns in the Continental Black-tailed Godwits using the Donana wetlands, a major passage and wintering area for waterbirds in southern Spain. Methods: Individual godwits were captured, marked and their primary moult was scored in Donana during the non-breeding season (June–March) in 2011 and 2012. Data from resightings of colour-marked godwits and birds equipped with satellite transmitters were used to estimate stopover duration during post-breeding migration (June–September) to determine if godwits move to West Africa before completing their primary moult. Results: Average primary moult duration was estimated to be 84 days ± 9 se, during 29 June–21 September and did not differ between sexes. Only 2% of individuals were observed with suspended moult. We estimated stopover duration in Donana to be 13 days ± 2 se before migrating to West Africa. Conclusions: Most godwits stage for about two weeks in the Donana wetlands during southward migration, moult their primaries and appear to suspend moult before crossing the Sahara. Others may complete their primary moult in Donana, or elsewhere in Europe and overwinter in Donana where increasing numbers of godwits have been detected in recent years. A few individuals may finish the moult in Donana and migrate to West Africa late in the post-breeding season.
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wetland salinity induces sex dependent carry over effects on the individual performance of a long distance migrant
Scientific Reports, 2017Co-Authors: Jose A Masero, Nathan R Senner, Jose M Abadgomez, Jorge S Gutierrez, Francisco Santiagoquesada, Juan M Sanchezguzman, Theunis PiersmaAbstract:Salinization is having a major impact on wetlands and its biota worldwide. Specifically, many migratory animals that rely on wetlands are increasingly exposed to elevated salinity on their nonbreeding grounds. Experimental evidence suggests that physiological challenges associated with increasing salinity may disrupt self-maintenance processes in these species. Nonetheless, the potential role of salinity as a driver of ecological carry-over effects remains unstudied. Here, we investigated the extent to which the use of saline wetlands during winter – inferred from feather stable isotope values – induces residual effects that carry over and influence physiological traits relevant to fitness in black-tailed godwits Limosa Limosa Limosa on their northward migration. Overwintering males and females were segregated by wetland salinity in West Africa, with females mostly occupying freshwater wetlands. The use of these wetlands along a gradient of salinities was associated with differences in immune responsiveness to phytohaemagglutinin and sized-corrected body mass in godwits staging in southern Europe during northward migration – 3,000 km from the nonbreeding grounds – but in males only. These findings provide a window onto the processes by which wetland salinity can induce carry-over effects and can help predict how migratory species should respond to future climate-induced increases in salinity.
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estimating the size of the dutch breeding population of continental black tailed godwits from 2007 2015 using resighting data from spring staging sites
Ardea, 2016Co-Authors: Rosemarie Kentie, Nathan R Senner, Jose A Masero, Rocio Marquezferrando, Mo A Verhoeven, Jos C E W Hooijmeijer, Jordi Figuerola, Theunis PiersmaAbstract:Over the past 50 years, the population of Continental Black-tailed Godwits Limosa Limosa Limosa breeding of the East Atlantic Flyway has been in steep decline. This decline has previously been documented in trend analyses and six Netherlands-wide count-based population estimates, the last of which was completed in 1999. We provide an updated population size estimate and describe inter-annual fluctuations in the population between 2007 and 2015. To generate these estimates, we integrated a mark-recapture survival analysis with estimates of the densities of colour-marked individuals at migratory staging sites with known proportions of Continental and Icelandic L. l. islandica Black-tailed Godwits within a Bayesian framework. The use of these analytical techniques means that, in contrast with earlier efforts, our estimates are accompanied with confidence intervals, allowing us to estimate the population size with known precision. Using additional information on the breeding destination of 43 godwits equipped...
Rosemarie Kentie - One of the best experts on this subject based on the ideXlab platform.
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Data_Sheet_1_High Migratory Survival and Highly Variable Migratory Behavior in Black-Tailed Godwits.docx
2019Co-Authors: Nathan R Senner, Jose A Masero, José A. Alves, Rosemarie Kentie, Mo A Verhoeven, Jos C E W Hooijmeijer, José M. Abad-gómez, Ruth A. Howison, A. Jelle H. Loonstra, Afonso RochaAbstract:Few studies have been able to directly measure the seasonal survival rates of migratory species or determine how variable the timing of migration is within individuals and across populations over multiple years. As such, it remains unclear how likely migration is to affect the population dynamics of migratory species and how capable migrants may be of responding to changing environmental conditions within their lifetimes. To address these questions, we used three types of tracking devices to track individual black-tailed godwits from the nominate subspecies (Limosa Limosa Limosa) throughout their annual cycles for up to 5 consecutive years. We found that godwits exhibit considerable inter- and intra-individual variation in their migratory behavior across years. We also found that godwits had generally high survival rates during migration, although survival was reduced during northward flights across the Sahara Desert. These patterns differ from those observed in most other migratory species, suggesting that migration may only be truly dangerous when crossing geographic barriers that lack emergency stopover sites and that the levels of phenotypic flexibility exhibited by some populations may enable them to rapidly respond to changing environmental conditions.
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primary moult of continental black tailed godwits Limosa Limosa Limosa in the donana wetlands spain
Bird Study, 2018Co-Authors: Rocio Marquezferrando, Nathan R Senner, Jose A Masero, Magdalena Remisiewicz, Rosemarie Kentie, Mo A Verhoeven, Jos C E W Hooijmeijer, Sara Pardal, Mathieu SarasaAbstract:Capsule: Most Continental Black-tailed Godwits Limosa Limosa Limosa using the Donana wetlands during post-breeding migration appear to begin moult before they arrive and suspend moult before they m...
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Primary moult of continental Black-tailed Godwits Limosa Limosa Limosa in the Doñana wetlands, Spain
Bird Study, 2018Co-Authors: Rocío Márquez-ferrando, Nathan R Senner, Jose A Masero, Magdalena Remisiewicz, Rosemarie Kentie, Mo A Verhoeven, Jos C E W Hooijmeijer, Sara Pardal, Mathieu Sarasa, Theunis PiersmaAbstract:Capsule: Most Continental Black-tailed Godwits Limosa Limosa Limosa using the Donana wetlands during post-breeding migration appear to begin moult before they arrive and suspend moult before they migrate onwards to West Africa. Aims: We aim to describe the primary moult strategies and patterns in the Continental Black-tailed Godwits using the Donana wetlands, a major passage and wintering area for waterbirds in southern Spain. Methods: Individual godwits were captured, marked and their primary moult was scored in Donana during the non-breeding season (June–March) in 2011 and 2012. Data from resightings of colour-marked godwits and birds equipped with satellite transmitters were used to estimate stopover duration during post-breeding migration (June–September) to determine if godwits move to West Africa before completing their primary moult. Results: Average primary moult duration was estimated to be 84 days ± 9 se, during 29 June–21 September and did not differ between sexes. Only 2% of individuals were observed with suspended moult. We estimated stopover duration in Donana to be 13 days ± 2 se before migrating to West Africa. Conclusions: Most godwits stage for about two weeks in the Donana wetlands during southward migration, moult their primaries and appear to suspend moult before crossing the Sahara. Others may complete their primary moult in Donana, or elsewhere in Europe and overwinter in Donana where increasing numbers of godwits have been detected in recent years. A few individuals may finish the moult in Donana and migrate to West Africa late in the post-breeding season.
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estimating the size of the dutch breeding population of continental black tailed godwits from 2007 2015 using resighting data from spring staging sites
Ardea, 2016Co-Authors: Rosemarie Kentie, Nathan R Senner, Jose A Masero, Rocio Marquezferrando, Mo A Verhoeven, Jos C E W Hooijmeijer, Jordi Figuerola, Theunis PiersmaAbstract:Over the past 50 years, the population of Continental Black-tailed Godwits Limosa Limosa Limosa breeding of the East Atlantic Flyway has been in steep decline. This decline has previously been documented in trend analyses and six Netherlands-wide count-based population estimates, the last of which was completed in 1999. We provide an updated population size estimate and describe inter-annual fluctuations in the population between 2007 and 2015. To generate these estimates, we integrated a mark-recapture survival analysis with estimates of the densities of colour-marked individuals at migratory staging sites with known proportions of Continental and Icelandic L. l. islandica Black-tailed Godwits within a Bayesian framework. The use of these analytical techniques means that, in contrast with earlier efforts, our estimates are accompanied with confidence intervals, allowing us to estimate the population size with known precision. Using additional information on the breeding destination of 43 godwits equipped...
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intronic variation at the chd1 z gene in black tailed godwits Limosa Limosa Limosa correlations with fitness components revisited
Ibis, 2013Co-Authors: Krijn B. Trimbos, C.j.m. Musters, Geert R. De Snoo, Rosemarie Kentie, Jos C E W Hooijmeijer, Marco Van Der Velde, Carola Poley, Theunis PiersmaAbstract:Recently, Schroeder et al. (2010, Ibis 152: 368–377) suggested that intronic variation in the CHD1-Z gene of Black-tailed Godwits breeding in southwest Friesland, The Netherlands, correlated with fitness components. Here we re-examine this surprising result using an expanded dataset (2088 birds sampled from 2004 to 2010 vs. 284 birds from 2004 to 2007). We find that the presence of the Z* allele (9% of the birds) is not associated with breeding habitat type, egg size, adult survival, adult body mass or adult body condition. The results presented here, when used in synergy with the previously reported results by Schroeder et al., suggest that there might be a tendency towards female adults with the Z* allele laying earlier clutches than adult females without the Z* allele. The occurrence of the Z* allele was also associated with a higher chick body mass and return rate. Chicks with the Z* allele that had hatched early in the breeding season were heavier at birth than chicks without the Z* allele and chicks with the Z* allele that had hatched late. Collectively, the results suggest that variation in the CHD1-Z gene may indeed have arisen as a byproduct of selection acting on females during the egg fase and on chicks during the rearing stages of the reproductive cycle.
Geert R. De Snoo - One of the best experts on this subject based on the ideXlab platform.
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Patterns in nuclear and mitochondrial DNA reveal historical and recent isolation in the Black-tailed Godwit (Limosa Limosa).
PloS one, 2014Co-Authors: Krijn B. Trimbos, Theunis Piersma, Camiel Doorenweerd, Ken Kraaijeveld, C.j.m. Musters, Niko M. Groen, Peter De Knijff, Geert R. De SnooAbstract:On the basis of morphological differences, three subspecies of Black-tailed Godwit (Limosa Limosa) have been recognized (L. l. Limosa, L. l. islandica and L. l. melanuroides). In previous studies mitochondrial DNA (mtDNA) sequence data showed minimal genetic divergence between the three subspecies and an absence of sub-structuring within L. l. Limosa. Here, population genetic structure and phylogeographic patterns have been analyzed using COI, HVR1 and HVR2 mtDNA sequence data as well as 12 microsatellite loci (nuDNA). The nuDNA data suggest genetic differentiation between L. l. Limosa from Sweden and The Netherlands, between L. l. Limosa and L. l. islandica, but not between L. l. Limosa and L. l. melanuroides. However, the mtDNA data were not consistent with the nuDNA pattern. mtDNA did support a split between L. l. melanuroides and L. l. Limosa/L. l. islandica and also demonstrated two L. l. Limosa haplotype clusters that were not geographically isolated. This genetic structure can be explained by a scenario of isolation of L. l. melanuroides from L. l. Limosa in Beringia during the Last Glacial Maximum. During the Pleistocene separation of L. l. islandica from L. l. Limosa occurred, followed by colonization of Iceland by the L. l. islandica during the Holocene. Within L. l. Limosa founder events, followed by population expansion, took place during the Holocene also. According to the patterns observed in both markers together and their geographic separation, we propose that the three traditional subspecies indeed represent three separate genetic units.
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intronic variation at the chd1 z gene in black tailed godwits Limosa Limosa Limosa correlations with fitness components revisited
Ibis, 2013Co-Authors: Krijn B. Trimbos, C.j.m. Musters, Geert R. De Snoo, Rosemarie Kentie, Jos C E W Hooijmeijer, Marco Van Der Velde, Carola Poley, Theunis PiersmaAbstract:Recently, Schroeder et al. (2010, Ibis 152: 368–377) suggested that intronic variation in the CHD1-Z gene of Black-tailed Godwits breeding in southwest Friesland, The Netherlands, correlated with fitness components. Here we re-examine this surprising result using an expanded dataset (2088 birds sampled from 2004 to 2010 vs. 284 birds from 2004 to 2007). We find that the presence of the Z* allele (9% of the birds) is not associated with breeding habitat type, egg size, adult survival, adult body mass or adult body condition. The results presented here, when used in synergy with the previously reported results by Schroeder et al., suggest that there might be a tendency towards female adults with the Z* allele laying earlier clutches than adult females without the Z* allele. The occurrence of the Z* allele was also associated with a higher chick body mass and return rate. Chicks with the Z* allele that had hatched early in the breeding season were heavier at birth than chicks without the Z* allele and chicks with the Z* allele that had hatched late. Collectively, the results suggest that variation in the CHD1-Z gene may indeed have arisen as a byproduct of selection acting on females during the egg fase and on chicks during the rearing stages of the reproductive cycle.
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No evident spatial genetic structuring in the rapidly declining Black-tailed Godwit Limosa Limosa Limosa in The Netherlands
Conservation Genetics, 2011Co-Authors: Krijn B. Trimbos, Theunis Piersma, C.j.m. Musters, Rosemarie Kentie, Yvonne I. Verkuil, Geert R. De SnooAbstract:With 40% of the European Black-tailed Godwit population breeding in The Netherlands, this country harbours internationally significant numbers of this species. However, ongoing agricultural intensification has resulted in the fragmentation of the population and drastic population declines since 1967. By establishing genetic diversity, genetic differentiation and gene flow on the basis of 12 microsatellites, we investigated whether the population genetic structure of the Dutch Black-tailed Godwit bears the marks of these changes. Genetic diversity appeared to be moderate, and Bayesian model-based analysis of individual genotypes revealed no clustering in the Dutch populations. This was supported by pairwise F_ST values and AMOVA, which indicated no differentiation among the nine breeding areas. Gene flow estimates were larger than “one migrant per generation” between sample locations, and no isolation by distance was demonstrated. Our results indicate the maintenance of moderate levels of genetic diversity and genetic connectivity between breeding sites throughout the Dutch Black-tailed Godwit breeding population. We suggest that the Dutch Black-tailed Godwit breeding areas should be managed as a single panmictic unit, much as it is presently done.
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no evident spatial genetic structuring in the rapidly declining black tailed godwit Limosa Limosa Limosa in the netherlands
Conservation Genetics, 2011Co-Authors: Krijn B. Trimbos, Theunis Piersma, C.j.m. Musters, Rosemarie Kentie, Yvonne I. Verkuil, Geert R. De SnooAbstract:With 40% of the European Black-tailed Godwit population breeding in The Netherlands, this country harbours internationally significant numbers of this species. However, ongoing agricultural intensification has resulted in the fragmentation of the population and drastic population declines since 1967. By establishing genetic diversity, genetic differentiation and gene flow on the basis of 12 microsatellites, we investigated whether the population genetic structure of the Dutch Black-tailed Godwit bears the marks of these changes. Genetic diversity appeared to be moderate, and Bayesian model-based analysis of individual genotypes revealed no clustering in the Dutch populations. This was supported by pairwise FST values and AMOVA, which indicated no differentiation among the nine breeding areas. Gene flow estimates were larger than “one migrant per generation” between sample locations, and no isolation by distance was demonstrated. Our results indicate the maintenance of moderate levels of genetic diversity and genetic connectivity between breeding sites throughout the Dutch Black-tailed Godwit breeding population. We suggest that the Dutch Black-tailed Godwit breeding areas should be managed as a single panmictic unit, much as it is presently done.
Krijn B. Trimbos - One of the best experts on this subject based on the ideXlab platform.
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Patterns in nuclear and mitochondrial DNA reveal historical and recent isolation in the Black-tailed Godwit (Limosa Limosa).
PloS one, 2014Co-Authors: Krijn B. Trimbos, Theunis Piersma, Camiel Doorenweerd, Ken Kraaijeveld, C.j.m. Musters, Niko M. Groen, Peter De Knijff, Geert R. De SnooAbstract:On the basis of morphological differences, three subspecies of Black-tailed Godwit (Limosa Limosa) have been recognized (L. l. Limosa, L. l. islandica and L. l. melanuroides). In previous studies mitochondrial DNA (mtDNA) sequence data showed minimal genetic divergence between the three subspecies and an absence of sub-structuring within L. l. Limosa. Here, population genetic structure and phylogeographic patterns have been analyzed using COI, HVR1 and HVR2 mtDNA sequence data as well as 12 microsatellite loci (nuDNA). The nuDNA data suggest genetic differentiation between L. l. Limosa from Sweden and The Netherlands, between L. l. Limosa and L. l. islandica, but not between L. l. Limosa and L. l. melanuroides. However, the mtDNA data were not consistent with the nuDNA pattern. mtDNA did support a split between L. l. melanuroides and L. l. Limosa/L. l. islandica and also demonstrated two L. l. Limosa haplotype clusters that were not geographically isolated. This genetic structure can be explained by a scenario of isolation of L. l. melanuroides from L. l. Limosa in Beringia during the Last Glacial Maximum. During the Pleistocene separation of L. l. islandica from L. l. Limosa occurred, followed by colonization of Iceland by the L. l. islandica during the Holocene. Within L. l. Limosa founder events, followed by population expansion, took place during the Holocene also. According to the patterns observed in both markers together and their geographic separation, we propose that the three traditional subspecies indeed represent three separate genetic units.
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intronic variation at the chd1 z gene in black tailed godwits Limosa Limosa Limosa correlations with fitness components revisited
Ibis, 2013Co-Authors: Krijn B. Trimbos, C.j.m. Musters, Geert R. De Snoo, Rosemarie Kentie, Jos C E W Hooijmeijer, Marco Van Der Velde, Carola Poley, Theunis PiersmaAbstract:Recently, Schroeder et al. (2010, Ibis 152: 368–377) suggested that intronic variation in the CHD1-Z gene of Black-tailed Godwits breeding in southwest Friesland, The Netherlands, correlated with fitness components. Here we re-examine this surprising result using an expanded dataset (2088 birds sampled from 2004 to 2010 vs. 284 birds from 2004 to 2007). We find that the presence of the Z* allele (9% of the birds) is not associated with breeding habitat type, egg size, adult survival, adult body mass or adult body condition. The results presented here, when used in synergy with the previously reported results by Schroeder et al., suggest that there might be a tendency towards female adults with the Z* allele laying earlier clutches than adult females without the Z* allele. The occurrence of the Z* allele was also associated with a higher chick body mass and return rate. Chicks with the Z* allele that had hatched early in the breeding season were heavier at birth than chicks without the Z* allele and chicks with the Z* allele that had hatched late. Collectively, the results suggest that variation in the CHD1-Z gene may indeed have arisen as a byproduct of selection acting on females during the egg fase and on chicks during the rearing stages of the reproductive cycle.
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No evident spatial genetic structuring in the rapidly declining Black-tailed Godwit Limosa Limosa Limosa in The Netherlands
Conservation Genetics, 2011Co-Authors: Krijn B. Trimbos, Theunis Piersma, C.j.m. Musters, Rosemarie Kentie, Yvonne I. Verkuil, Geert R. De SnooAbstract:With 40% of the European Black-tailed Godwit population breeding in The Netherlands, this country harbours internationally significant numbers of this species. However, ongoing agricultural intensification has resulted in the fragmentation of the population and drastic population declines since 1967. By establishing genetic diversity, genetic differentiation and gene flow on the basis of 12 microsatellites, we investigated whether the population genetic structure of the Dutch Black-tailed Godwit bears the marks of these changes. Genetic diversity appeared to be moderate, and Bayesian model-based analysis of individual genotypes revealed no clustering in the Dutch populations. This was supported by pairwise F_ST values and AMOVA, which indicated no differentiation among the nine breeding areas. Gene flow estimates were larger than “one migrant per generation” between sample locations, and no isolation by distance was demonstrated. Our results indicate the maintenance of moderate levels of genetic diversity and genetic connectivity between breeding sites throughout the Dutch Black-tailed Godwit breeding population. We suggest that the Dutch Black-tailed Godwit breeding areas should be managed as a single panmictic unit, much as it is presently done.
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no evident spatial genetic structuring in the rapidly declining black tailed godwit Limosa Limosa Limosa in the netherlands
Conservation Genetics, 2011Co-Authors: Krijn B. Trimbos, Theunis Piersma, C.j.m. Musters, Rosemarie Kentie, Yvonne I. Verkuil, Geert R. De SnooAbstract:With 40% of the European Black-tailed Godwit population breeding in The Netherlands, this country harbours internationally significant numbers of this species. However, ongoing agricultural intensification has resulted in the fragmentation of the population and drastic population declines since 1967. By establishing genetic diversity, genetic differentiation and gene flow on the basis of 12 microsatellites, we investigated whether the population genetic structure of the Dutch Black-tailed Godwit bears the marks of these changes. Genetic diversity appeared to be moderate, and Bayesian model-based analysis of individual genotypes revealed no clustering in the Dutch populations. This was supported by pairwise FST values and AMOVA, which indicated no differentiation among the nine breeding areas. Gene flow estimates were larger than “one migrant per generation” between sample locations, and no isolation by distance was demonstrated. Our results indicate the maintenance of moderate levels of genetic diversity and genetic connectivity between breeding sites throughout the Dutch Black-tailed Godwit breeding population. We suggest that the Dutch Black-tailed Godwit breeding areas should be managed as a single panmictic unit, much as it is presently done.
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characterization of polymorphic microsatellite dna markers in the black tailed godwit Limosa Limosa aves
Molecular Ecology Resources, 2009Co-Authors: Yvonne I. Verkuil, Krijn B. Trimbos, Oliver Haddrath, Allan J. Baker, Theunis PiersmaAbstract:We isolated and tested 16 microsatellite loci in black-tailed godwits from the Netherlands (Limosa Limosa Limosa), and from Australasia (subspecies melanuroides). One locus was monomorphic, two loci had null-alleles and one was significantly heterozygote deficient. The remaining 12 polymorphic loci had on average 7.9 alleles (range 5-11) and the mean expected heterozygosity was 0.69. No significant linkage disequilibrium between the loci was observed and all loci were autosomal. Fourteen loci were successfully cross-amplified in bar-tailed godwit (Limosa lapponica).