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Petra Quillfeldt - One of the best experts on this subject based on the ideXlab platform.
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is sex specific mass gain in cory s shearwaters Calonectris diomedea related to begging and steroid hormone expression
Behavioral Ecology and Sociobiology, 2007Co-Authors: Inga Träger, Petra Quillfeldt, Kate Griffiths, Katherine L. Buchanan, Juan F. MaselloAbstract:Mass differences between the sexes of dimorphic bird species often appear early in the nestling development. But how do adults know how much to feed a chick in a sexually dimorphic species? Do chicks of the heavier sex beg more? We studied begging in Cory’s shearwaters Calonectris diomedea, a species with heavier adult and juvenile males than females. We found that begging rates and call numbers were not different between male and female chicks, but parameters of begging intensity differed between the sexes in their relationship to chick body condition. For the same body condition, males had significantly higher begging call numbers and rates. Acoustical parameters, which were analysed semi-automatically, included the lengths of call and silence intervals, the minimum, mean and maximum frequency in a call and the number of frequency peaks within a call. We found no consistent differences of acoustic begging call elements between the sexes. Male and female chicks did not differ in the levels of the steroid hormones testosterone or corticosterone in the second quarter of the nestling period, and the mechanism leading to sex-related differences in begging rates for a given body condition remains unknown.
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Is sex-specific mass gain in Cory’s shearwaters Calonectris diomedea related to begging and steroid hormone expression?
Behavioral Ecology and Sociobiology, 2006Co-Authors: Petra Quillfeldt, Inga Träger, Kate Griffiths, Katherine L. Buchanan, Juan F. MaselloAbstract:Mass differences between the sexes of dimorphic bird species often appear early in the nestling development. But how do adults know how much to feed a chick in a sexually dimorphic species? Do chicks of the heavier sex beg more? We studied begging in Cory’s shearwaters Calonectris diomedea, a species with heavier adult and juvenile males than females. We found that begging rates and call numbers were not different between male and female chicks, but parameters of begging intensity differed between the sexes in their relationship to chick body condition. For the same body condition, males had significantly higher begging call numbers and rates. Acoustical parameters, which were analysed semi-automatically, included the lengths of call and silence intervals, the minimum, mean and maximum frequency in a call and the number of frequency peaks within a call. We found no consistent differences of acoustic begging call elements between the sexes. Male and female chicks did not differ in the levels of the steroid hormones testosterone or corticosterone in the second quarter of the nestling period, and the mechanism leading to sex-related differences in begging rates for a given body condition remains unknown.
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Do Acoustic Parameters of Begging Calls of Cory’s Shearwaters Calonectris diomedea Reflect Chick Body Condition?
Waterbirds, 2006Co-Authors: Inga Traeger, Juan F. Masello, Roger Mundry, Petra QuillfeldtAbstract:Abstract A previous study of begging in Cory’s Shearwaters (Calonectris diomedea) found that chicks convey information about their body condition through the number and rate of begging calls uttered during a feeding session. Parents delivered larger meals when chicks begged more intensely. Here we test whether acoustic properties of begging calls of Cory’s Shearwaters are related to body condition of chicks, and whether parents are responsive to changes in acoustic parameters. Acoustic parameters, which were analyzed using semi-automatic call contour analysis, included the duration of calls and silent intervals, the minimum, mean and maximum frequency in a call and the number of frequency peaks within a call. We found that, in contrast to the number and rate of begging calls, acoustic parameters did not reflect chick body condition, and were not correlated with the meal size delivered by the attending adults.
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do acoustic parameters of begging calls of cory s shearwaters Calonectris diomedea reflect chick body condition
Waterbirds, 2006Co-Authors: Inga Traeger, Juan F. Masello, Roger Mundry, Petra QuillfeldtAbstract:Abstract A previous study of begging in Cory’s Shearwaters (Calonectris diomedea) found that chicks convey information about their body condition through the number and rate of begging calls uttered during a feeding session. Parents delivered larger meals when chicks begged more intensely. Here we test whether acoustic properties of begging calls of Cory’s Shearwaters are related to body condition of chicks, and whether parents are responsive to changes in acoustic parameters. Acoustic parameters, which were analyzed using semi-automatic call contour analysis, included the duration of calls and silent intervals, the minimum, mean and maximum frequency in a call and the number of frequency peaks within a call. We found that, in contrast to the number and rate of begging calls, acoustic parameters did not reflect chick body condition, and were not correlated with the meal size delivered by the attending adults.
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Context-dependent honest begging in Cory’s shearwaters (Calonectris diomedea): influence of food availability
acta ethologica, 2004Co-Authors: Petra Quillfeldt, Juan F. MaselloAbstract:A key question in parent-offspring conflict is if provisioning is controlled primarily by parents or by their offspring, and how this interaction is mediated behaviourally. We recorded the vocalisations of chicks of Cory’s shearwater ( Calonectris diomedea ) during feeding sessions in a season with abundant food. Cory’s shearwater chicks conveyed information about their body condition through begging, and parents were responsive to the level of solicitation. In order to test experimentally for the effects of saturation on begging, we supplemented chicks’ food. Observational and experimental data both indicated that satiated chicks did not beg, and consequently no feeding occurred. Adults decreased their attendance following the decreased demand of supplemented chicks. We compare the results with data from a poor breeding season. The data suggest that only during the good season was variation in begging large enough to be detected and to serve as a reliable signal to the parents. Our results are in line with the predictions of a recent model indicating that begging signals were most informative to the parents in a context when there was a class of satiated individuals which stand to gain no benefit from the resource (and hence will refrain from signalling).
Juan F. Masello - One of the best experts on this subject based on the ideXlab platform.
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is sex specific mass gain in cory s shearwaters Calonectris diomedea related to begging and steroid hormone expression
Behavioral Ecology and Sociobiology, 2007Co-Authors: Inga Träger, Petra Quillfeldt, Kate Griffiths, Katherine L. Buchanan, Juan F. MaselloAbstract:Mass differences between the sexes of dimorphic bird species often appear early in the nestling development. But how do adults know how much to feed a chick in a sexually dimorphic species? Do chicks of the heavier sex beg more? We studied begging in Cory’s shearwaters Calonectris diomedea, a species with heavier adult and juvenile males than females. We found that begging rates and call numbers were not different between male and female chicks, but parameters of begging intensity differed between the sexes in their relationship to chick body condition. For the same body condition, males had significantly higher begging call numbers and rates. Acoustical parameters, which were analysed semi-automatically, included the lengths of call and silence intervals, the minimum, mean and maximum frequency in a call and the number of frequency peaks within a call. We found no consistent differences of acoustic begging call elements between the sexes. Male and female chicks did not differ in the levels of the steroid hormones testosterone or corticosterone in the second quarter of the nestling period, and the mechanism leading to sex-related differences in begging rates for a given body condition remains unknown.
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Is sex-specific mass gain in Cory’s shearwaters Calonectris diomedea related to begging and steroid hormone expression?
Behavioral Ecology and Sociobiology, 2006Co-Authors: Petra Quillfeldt, Inga Träger, Kate Griffiths, Katherine L. Buchanan, Juan F. MaselloAbstract:Mass differences between the sexes of dimorphic bird species often appear early in the nestling development. But how do adults know how much to feed a chick in a sexually dimorphic species? Do chicks of the heavier sex beg more? We studied begging in Cory’s shearwaters Calonectris diomedea, a species with heavier adult and juvenile males than females. We found that begging rates and call numbers were not different between male and female chicks, but parameters of begging intensity differed between the sexes in their relationship to chick body condition. For the same body condition, males had significantly higher begging call numbers and rates. Acoustical parameters, which were analysed semi-automatically, included the lengths of call and silence intervals, the minimum, mean and maximum frequency in a call and the number of frequency peaks within a call. We found no consistent differences of acoustic begging call elements between the sexes. Male and female chicks did not differ in the levels of the steroid hormones testosterone or corticosterone in the second quarter of the nestling period, and the mechanism leading to sex-related differences in begging rates for a given body condition remains unknown.
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Do Acoustic Parameters of Begging Calls of Cory’s Shearwaters Calonectris diomedea Reflect Chick Body Condition?
Waterbirds, 2006Co-Authors: Inga Traeger, Juan F. Masello, Roger Mundry, Petra QuillfeldtAbstract:Abstract A previous study of begging in Cory’s Shearwaters (Calonectris diomedea) found that chicks convey information about their body condition through the number and rate of begging calls uttered during a feeding session. Parents delivered larger meals when chicks begged more intensely. Here we test whether acoustic properties of begging calls of Cory’s Shearwaters are related to body condition of chicks, and whether parents are responsive to changes in acoustic parameters. Acoustic parameters, which were analyzed using semi-automatic call contour analysis, included the duration of calls and silent intervals, the minimum, mean and maximum frequency in a call and the number of frequency peaks within a call. We found that, in contrast to the number and rate of begging calls, acoustic parameters did not reflect chick body condition, and were not correlated with the meal size delivered by the attending adults.
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do acoustic parameters of begging calls of cory s shearwaters Calonectris diomedea reflect chick body condition
Waterbirds, 2006Co-Authors: Inga Traeger, Juan F. Masello, Roger Mundry, Petra QuillfeldtAbstract:Abstract A previous study of begging in Cory’s Shearwaters (Calonectris diomedea) found that chicks convey information about their body condition through the number and rate of begging calls uttered during a feeding session. Parents delivered larger meals when chicks begged more intensely. Here we test whether acoustic properties of begging calls of Cory’s Shearwaters are related to body condition of chicks, and whether parents are responsive to changes in acoustic parameters. Acoustic parameters, which were analyzed using semi-automatic call contour analysis, included the duration of calls and silent intervals, the minimum, mean and maximum frequency in a call and the number of frequency peaks within a call. We found that, in contrast to the number and rate of begging calls, acoustic parameters did not reflect chick body condition, and were not correlated with the meal size delivered by the attending adults.
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Context-dependent honest begging in Cory’s shearwaters (Calonectris diomedea): influence of food availability
acta ethologica, 2004Co-Authors: Petra Quillfeldt, Juan F. MaselloAbstract:A key question in parent-offspring conflict is if provisioning is controlled primarily by parents or by their offspring, and how this interaction is mediated behaviourally. We recorded the vocalisations of chicks of Cory’s shearwater ( Calonectris diomedea ) during feeding sessions in a season with abundant food. Cory’s shearwater chicks conveyed information about their body condition through begging, and parents were responsive to the level of solicitation. In order to test experimentally for the effects of saturation on begging, we supplemented chicks’ food. Observational and experimental data both indicated that satiated chicks did not beg, and consequently no feeding occurred. Adults decreased their attendance following the decreased demand of supplemented chicks. We compare the results with data from a poor breeding season. The data suggest that only during the good season was variation in begging large enough to be detected and to serve as a reliable signal to the parents. Our results are in line with the predictions of a recent model indicating that begging signals were most informative to the parents in a context when there was a class of satiated individuals which stand to gain no benefit from the resource (and hence will refrain from signalling).
David Costantini - One of the best experts on this subject based on the ideXlab platform.
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individual variation of persistent organic pollutants in relation to stable isotope ratios sex reproductive phase and oxidative status in scopoli s shearwaters Calonectris diomedea from the southern mediterranean
Science of The Total Environment, 2017Co-Authors: David Costantini, Bruno Massa, Manrico Sebastiano, Martina S. Müller, Igor Eulaers, Per Ambus, Govindan Malarvannan, Adrian Covaci, Giacomo DellomoAbstract:Little is known about the accumulation of persistent organic pollutants (POPs) and its consequences for seabirds in the Mediterranean basin. We characterised the plasma contaminant profile (polychlorinated biphenyls ΣPCBs; organochlorine pesticides ΣOCPs; polybrominated diphenyl ethers ΣPBDEs) of a population of the seabird Scopoli's shearwater (Calonectris diomedea) that breeds in the southern Mediterranean (Linosa Island) and investigated (i) whether sex, stable isotope ratios (related to diet), reproductive phase (early incubation vs. late breeding season) and body mass explained variation in contaminant burden and (ii) whether they predict health-related variables. The predominant category of POPs was ΣPCBs contributing between 53.0 and 92.4% of the total POPs in each shearwater. The percentage contribution of ΣOCPs to total POPs ranged between 7.6 and 47.0%, while that of ΣPBDEs ranged between <1% and 22.1%. Near the end of the breeding season, concentrations of ΣPCBs, ΣOCPs and ΣPOPs were significantly higher than at the beginning of the incubation period. ΣPBDEs were higher in males than females near the end of the breeding season, while they were higher in females than males at the beginning of the egg incubation period. Carbon- and nitrogen isotope ratios and individual body mass were not significantly associated with any contaminant class. Mates differed in the concentration of POPs, but they had similar stable isotope values. There was little evidence for a connection between contaminants and blood-based markers of oxidative balance. None of the contaminants predicted the probability of a bird being resighted as a breeder the following year. Thus, although POPs were present at high concentrations in some individuals, our study suggests little concern regarding POP exposure for this shearwater population.
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Individual variation of persistent organic pollutants in relation to stable isotope ratios, sex, reproductive phase and oxidative status in Scopoli's shearwaters (Calonectris diomedea) from the Southern Mediterranean
Science of The Total Environment, 2017Co-Authors: David Costantini, Bruno Massa, Manrico Sebastiano, Martina S. Müller, Igor Eulaers, Per Ambus, Govindan Malarvannan, Adrian Covaci, Giacomo Dell'omoAbstract:Little is known about the accumulation of persistent organic pollutants (POPs) and its consequences for seabirds in the Mediterranean basin. We characterised the plasma contaminant profile (polychlorinated biphenyls ΣPCBs; organochlorine pesticides ΣOCPs; polybrominated diphenyl ethers ΣPBDEs) of a population of the seabird Scopoli's shearwater (Calonectris diomedea) that breeds in the southern Mediterranean (Linosa Island) and investigated (i) whether sex, stable isotope ratios (related to diet), reproductive phase (early incubation vs. late breeding season) and body mass explained variation in contaminant burden and (ii) whether they predict health-related variables. The predominant category of POPs was ΣPCBs contributing between 53.0 and 92.4% of the total POPs in each shearwater. The percentage contribution of ΣOCPs to total POPs ranged between 7.6 and 47.0%, while that of ΣPBDEs ranged between
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oxidative stress predicts long term resight probability and reproductive success in scopoli s shearwater Calonectris diomedea
Conservation Physiology, 2015Co-Authors: David Costantini, Giacomo DellomoAbstract:A major challenge in conservation physiology is to find out biomarkers that reliably reflect individual variation in wear and tear. Recent work has suggested that biomarkers of oxidative stress may provide an additional tool to assess the health state of individuals and to predict fitness perspectives. In this study, we assessed whether three biomarkers of plasma oxidative status predicted the following factors: (i) the resight probability as breeder in the next seasons; and (ii) the cumulative reproductive output over multiple years in Scopoli’s shearwaters (Calonectris diomedea) using a 7 year individual-based data set. Our results show that shearwaters having higher levels of a marker of oxidative damage (reactive oxygen metabolites) in 2008 had a lower resight probability in the next years and a lower number of chicks raised from 2008 to 2014. In contrast, two biomarkers of antioxidant defences (non-enzymatic antioxidant capacity of plasma and thiols) did not have any predictive value. Increased concentrations of plasma reactive oxygen metabolites, together with the significant individual repeatability over time in this metric of oxidative stress found in numerous studies, suggest that this metric might serve as a blood-derived biomarker for health and fitness perspectives in birds and, possibly, also in other taxa.
Giacomo Dellomo - One of the best experts on this subject based on the ideXlab platform.
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individual variation of persistent organic pollutants in relation to stable isotope ratios sex reproductive phase and oxidative status in scopoli s shearwaters Calonectris diomedea from the southern mediterranean
Science of The Total Environment, 2017Co-Authors: David Costantini, Bruno Massa, Manrico Sebastiano, Martina S. Müller, Igor Eulaers, Per Ambus, Govindan Malarvannan, Adrian Covaci, Giacomo DellomoAbstract:Little is known about the accumulation of persistent organic pollutants (POPs) and its consequences for seabirds in the Mediterranean basin. We characterised the plasma contaminant profile (polychlorinated biphenyls ΣPCBs; organochlorine pesticides ΣOCPs; polybrominated diphenyl ethers ΣPBDEs) of a population of the seabird Scopoli's shearwater (Calonectris diomedea) that breeds in the southern Mediterranean (Linosa Island) and investigated (i) whether sex, stable isotope ratios (related to diet), reproductive phase (early incubation vs. late breeding season) and body mass explained variation in contaminant burden and (ii) whether they predict health-related variables. The predominant category of POPs was ΣPCBs contributing between 53.0 and 92.4% of the total POPs in each shearwater. The percentage contribution of ΣOCPs to total POPs ranged between 7.6 and 47.0%, while that of ΣPBDEs ranged between <1% and 22.1%. Near the end of the breeding season, concentrations of ΣPCBs, ΣOCPs and ΣPOPs were significantly higher than at the beginning of the incubation period. ΣPBDEs were higher in males than females near the end of the breeding season, while they were higher in females than males at the beginning of the egg incubation period. Carbon- and nitrogen isotope ratios and individual body mass were not significantly associated with any contaminant class. Mates differed in the concentration of POPs, but they had similar stable isotope values. There was little evidence for a connection between contaminants and blood-based markers of oxidative balance. None of the contaminants predicted the probability of a bird being resighted as a breeder the following year. Thus, although POPs were present at high concentrations in some individuals, our study suggests little concern regarding POP exposure for this shearwater population.
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oxidative stress predicts long term resight probability and reproductive success in scopoli s shearwater Calonectris diomedea
Conservation Physiology, 2015Co-Authors: David Costantini, Giacomo DellomoAbstract:A major challenge in conservation physiology is to find out biomarkers that reliably reflect individual variation in wear and tear. Recent work has suggested that biomarkers of oxidative stress may provide an additional tool to assess the health state of individuals and to predict fitness perspectives. In this study, we assessed whether three biomarkers of plasma oxidative status predicted the following factors: (i) the resight probability as breeder in the next seasons; and (ii) the cumulative reproductive output over multiple years in Scopoli’s shearwaters (Calonectris diomedea) using a 7 year individual-based data set. Our results show that shearwaters having higher levels of a marker of oxidative damage (reactive oxygen metabolites) in 2008 had a lower resight probability in the next years and a lower number of chicks raised from 2008 to 2014. In contrast, two biomarkers of antioxidant defences (non-enzymatic antioxidant capacity of plasma and thiols) did not have any predictive value. Increased concentrations of plasma reactive oxygen metabolites, together with the significant individual repeatability over time in this metric of oxidative stress found in numerous studies, suggest that this metric might serve as a blood-derived biomarker for health and fitness perspectives in birds and, possibly, also in other taxa.
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individual consistency and sex differences in migration strategies of scopoli s shearwaters Calonectris diomedea despite year differences
Current Zoology, 2014Co-Authors: Martina S. Müller, Bruno Massa, Richard A Phillips, Giacomo DellomoAbstract:Recently-developed capabilities for tracking the movements of individual birds over the course of a year or longer has provided increasing evidence for consistent individual differences in migration schedules and destinations. This raises questions about the relative importance of individual consistency versus flexibility in the evolution of migration strategies, and has implica- tions for the ability of populations to respond to climatic change. Using geolocators, we tracked the migrations of Scopoli's shearwaters Calonectris diomedea breeding in Linosa (Italy) across three years, and analysed timing and spatial aspects of their movements. Birds showed remarkable variation in their main wintering destination along the western coast of Africa. We found significant individual consistency in the total distance traveled, time spent in transit, and time that individuals spent in the win- tering areas. We found extensive sex differences in scheduling, duration, distances and destinations of migratory journeys. We also found sex differences in the degree of individual consistency in aspects of migration behaviour. Despite strong evidence for individual consistency, which indicates that migration journeys from the same bird tended to be more similar than those of dif- ferent birds, there remained substantial intra-individual variation between years. Indeed, we also found clear annual differences in departure dates, return dates, wintering period, the total distance traveled and return routes from wintering grounds back to the colony. These findings show that this population flexibly shifts migration schedules as well as routes between years in response to direct or indirect effects of heterogeneity in the environment, while maintaining consistent individual migration strategies (Cur- rent Zoology 60 (5): 631-641, 2014).
Michael Wink - One of the best experts on this subject based on the ideXlab platform.
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Differenzierung von Gelb- und Schwarzschnabelsturmtauchern (Calonectris diomedea, Puffinus puffinus, P. yelkouan) und Großmöwen des Silbermöwenkomplexes (Larus argentatus, L. fuscus, L. cachinnans)
Journal für Ornithologie, 1996Co-Authors: Petra Heidrich, Dietrich Ristow, Michael WinkAbstract:Das Cytochrom b-Gen von 3 Arten des Großmöwenkomplexes (Silber-, Herings- und Weißkopfmöwe) und 4 Arten europäischer Sturmtaucher (Eissturmvogel, Schwarzschnabel-, Mittelmeer- und Gelbschnabelsturmtaucher) wurde amplifiziert und sequenziert. Die phylogenetische Analyse mittels Maximun Parsimony und Neighbour-Joining bestätigte im wesentlichen die Aussagen von Voruntersuchungen mit einem kleineren, 300 Basenpaaren langen Teilstück des Cytochrom b-Gens ( Wink et al., 1933 a,b, 1994): Die Weißkopfmöwe ( Larus cachinnans ) läßt sich molekulargenetisch von Silber- und Heringsmöwe abtrennen und kann als eigene Art angesehen werden, wenn man diesen Status auch der Silber- und Heringsmöwe einräumt. Alle 3 Arten stammen von einer gemeinsamen Vorläuferart ab, wobei die Trennung vor maximal 0,3–0,4 Mio. Jahren erfolgt sein dürfte. In der Gruppe der europäischen Sturmtaucher lassen sich P.puffinus, P.yelkouan und C. diomedea als eigenständige Arten abgrenzen. Innerhalb des Gelbschnabelsturmtaucherkomplexes, findet man mindestens 3 Gruppen von maternalen Linien, von denen 2 der Unterart C. d. diomedea und 1 der Unterart C. d. borealis zuzuordnen sind. Eine populationsspezifische Zuordnung der Haplotypen innerhalb der Mittelmeerunterart ist nicht möglich, so daß davon ausgegangen werden muß, daß die Mittelmeerpopulationen untereinander im Genaustausch stehen. The mitochondrial cytochrome b gene was amplified by PCR and sequenced directly in 21 shearwaters and 14 gulls. Within the monophyletic herring gull complex which is closely related and of recent origin, the Mediterranean herring gull ( L. cachinnans ) appears to be genetically distinct, thus confirming our preliminary study ( Wink et al., 1994). The genetic speciation of P. puffinus and P. yelkouan ( Wink et al., 1993b) was also corroborated. Within the Calonectris diomedea -complex, the existence of at least three different maternal lineages became obvious besides a genetic differentiation between the 2 subspecies C. d. diomedea and C. d. borealis , a pair of maternal lines was found within the C. d. diomedea group. Since birds belonging to one of these 2 maternal lineages were found in 3 to 5 of the mediterranean populations, a dispersion of female shearwaters throughout the range is suggested.
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Mate fidelity and parentage in Cory's shearwater Calonectris diomedea ‐ field studies and DNA fingerprinting
Molecular Ecology, 1994Co-Authors: Ingrid Swatschek, Dietrich Ristow, Michael WinkAbstract:Field studies on Cory's shearwater Calonectris diomedea, which were carried out in a breeding colony in the Aegean Sea between 1989 and 1993, revealed that almost all breeding mates stay together over many consecutive years. Mates usually changed when one partner disappeared (e.g. through death), whereas ‘divorce’ occurred at a rate of 2.7%. Since birds are nesting at very close quarters, the potential for extrapair copulation (EPC) and subsequent extrapair fertilization (EPF) seems to be high. Multilocus DNA fingerprints were used to determine the true parentage of 46 offspring (broods contain a single chick only) from 29 pairs (few pairs were studied in two and three successive years). There were no cases of extrapair paternity.
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mate fidelity and parentage in cory s shearwater Calonectris diomedea field studies and dna fingerprinting
Molecular Ecology, 1994Co-Authors: Ingrid Swatschek, Dietrich Ristow, Michael WinkAbstract:Field studies on Cory's shearwater Calonectris diomedea, which were carried out in a breeding colony in the Aegean Sea between 1989 and 1993, revealed that almost all breeding mates stay together over many consecutive years. Mates usually changed when one partner disappeared (e.g. through death), whereas ‘divorce’ occurred at a rate of 2.7%. Since birds are nesting at very close quarters, the potential for extrapair copulation (EPC) and subsequent extrapair fertilization (EPF) seems to be high. Multilocus DNA fingerprints were used to determine the true parentage of 46 offspring (broods contain a single chick only) from 29 pairs (few pairs were studied in two and three successive years). There were no cases of extrapair paternity.
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inter and intraspecific variation of the nucleotide sequence of the cytochrome b gene in cory s Calonectris diomedea manx shearwater puffinus puffinus and the fulmar fulmarus glacialis
Zeitschrift für Naturforschung C, 1993Co-Authors: Michael Wink, Ingrid Swatschek, Petra Heidrich, U Kahl, H H Witt, Dietrich RistowAbstract:: The cytochrome b gene of three European taxa of the family of Procellariidae was amplified from total DNA and sequenced. The sequence comparison shows that the Fulmar (Fulmarus glacialis) is significantly distinct from shearwaters, whereas Cory's (Calonectris diomedea) and Manx Shearwater (Puffinus puffinus) are closely related. Although the populations of C. diomedea can be distinguished morphologically, the sequences of cyt b differ only slightly between the Atlantic and Mediterranean subspecies (i.e. C. d. borealis versus C. d. diomedea) and do not reveal other population differences within subspecies.