Survival and Natal Dispersal of Fledglings of Tengmalm's Owl in Relation to Fluctuating Food Conditions and Hatching Date

10.2307/4915 ◽  
1988 ◽  
Vol 57 (2) ◽  
pp. 433 ◽  
Author(s):  
Erkki Korpimaki ◽  
Martti Lagerstrom
Keyword(s):  
Natal Dispersal ◽  
Hatching Date ◽  
Food Conditions ◽  
Tengmalm's Owl

Low Repeatability of Laying Date and Clutch Size in Tengmalm's Owl: An Adaptation to Fluctuating Food Conditions

1990 ◽  
Vol 21 (4) ◽  
pp. 282 ◽  
Author(s):  
Erkki Korpimaki
Keyword(s):  
Clutch Size ◽  
Laying Date ◽  
Food Conditions ◽  
Tengmalm's Owl

Intersexual difference in early natal dispersal: abrupt departure by females and gradual emigration by males in Tengmalm’s Owl Aegolius funereus

2013 ◽  
Vol 155 (1) ◽  
pp. 235-242 ◽  
Author(s):  
Katrine Eldegard ◽  
Heidi Vognild ◽  
Geir A. Sonerud
Keyword(s):  
Natal Dispersal ◽  
Aegolius Funereus ◽  
Intersexual Difference ◽  
Tengmalm's Owl

Costs of Reproduction and Success of Manipulated Broods Under Varying Food Conditions in Tengmalm's Owl

10.2307/5109 ◽  
1988 ◽  
Vol 57 (3) ◽  
pp. 1027 ◽  
Author(s):  
Erkki Korpimaki
Keyword(s):  
Costs Of Reproduction ◽  
Food Conditions ◽  
Tengmalm's Owl

scholarly journals Correction to: Food conditions, competitive regime, and female social relationships in Japanese macaques: within-population variation on Yakushima

Primates ◽  
2021 ◽  
Author(s):  
Goro Hanya ◽  
Miki Matsubara ◽  
Shuhei Hayaishi ◽  
Koichiro Zamma ◽  
Shinichi Yoshihiro ◽  
...  
Keyword(s):  
Social Relationships ◽  
Japanese Macaques ◽  
Population Variation ◽  
Food Conditions ◽  
Female Social Relationships

scholarly journals Metabolic traits in brown trout (Salmo trutta) vary in response to food restriction and intrinsic factors

2020 ◽  
Vol 8 (1) ◽  
Author(s):  
Louise C Archer ◽  
Stephen A Hutton ◽  
Luke Harman ◽  
W Russell Poole ◽  
Patrick Gargan ◽  
...  
Keyword(s):  
Life History ◽  
Metabolic Rate ◽  
Intraspecific Variation ◽  
Brown Trout ◽  
Environmental Conditions ◽  
Food Restriction ◽  
Metabolic Rates ◽  
Intrinsic Factors ◽  
Metabolic Traits ◽  
Food Conditions

Abstract Metabolic rates vary hugely within and between populations, yet we know relatively little about factors causing intraspecific variation. Since metabolic rate determines the energetic cost of life, uncovering these sources of variation is important to understand and forecast responses to environmental change. Moreover, few studies have examined factors causing intraspecific variation in metabolic flexibility. We explore how extrinsic environmental conditions and intrinsic factors contribute to variation in metabolic traits in brown trout, an iconic and polymorphic species that is threatened across much of its native range. We measured metabolic traits in offspring from two wild populations that naturally show life-history variation in migratory tactics (one anadromous, i.e. sea-migratory, one non-anadromous) that we reared under either optimal food or experimental conditions of long-term food restriction (lasting between 7 and 17 months). Both populations showed decreased standard metabolic rates (SMR—baseline energy requirements) under low food conditions. The anadromous population had higher maximum metabolic rate (MMR) than the non-anadromous population, and marginally higher SMR. The MMR difference was greater than SMR and consequently aerobic scope (AS) was higher in the anadromous population. MMR and AS were both higher in males than females. The anadromous population also had higher AS under low food compared to optimal food conditions, consistent with population-specific effects of food restriction on AS. Our results suggest different components of metabolic rate can vary in their response to environmental conditions, and according to intrinsic (population-background/sex) effects. Populations might further differ in their flexibility of metabolic traits, potentially due to intrinsic factors related to life history (e.g. migratory tactics). More comparisons of populations/individuals with divergent life histories will help to reveal this. Overall, our study suggests that incorporating an understanding of metabolic trait variation and flexibility and linking this to life history and demography will improve our ability to conserve populations experiencing global change.

scholarly journals Risky movements? Natal dispersal does not decrease survival of a large herbivore

2021 ◽  
Vol 11 (6) ◽  
pp. 2731-2740
Author(s):  
Eric S. Long ◽  
Duane R. Diefenbach ◽  
Clayton L. Lutz ◽  
Bret D. Wallingford ◽  
Christopher S. Rosenberry
Keyword(s):  
Natal Dispersal ◽  
Large Herbivore

scholarly journals Proximate Factors Determining Age and Mass at Fledging in Rhinoceros Auklets (Cerorhinca Monocerata): Intra- and Interyear Variations

The Auk ◽  
2004 ◽  
Vol 121 (2) ◽  
pp. 452-462 ◽  
Author(s):  
Tomohiro Deguchi ◽  
Akinori Takahashi ◽  
Yutaka Watanuki
Keyword(s):  
Growth Rate ◽  
Wing Length ◽  
Linear Regression Analysis ◽  
Multiple Linear Regression Analysis ◽  
Major Effect ◽  
Timing Of Breeding ◽  
Hatching Date ◽  
Cerorhinca Monocerata ◽  
Parental Provisioning ◽  
Underlying Mechanisms

Abstract In alcids, growth rate and hatching date of chicks appear to affect fledging age and mass. Underlying mechanisms are hypothesized to be (1) critical wing length at fledging for postfledging survival, (2) synchronization of fledging to dilute predation risk, and (3) variable parental provisioning according to timing of breeding. To elucidate the effects of growth rate and hatching date on fledging age and mass, and to test those mechanistic hypotheses, we measured chick growth and fledging periods in Rhinoceros Auklets (Cerorhinca monocerata) at Teuri Island from 1995 to 2000. The multiple-linear regression analysis showed that intrayear variations of fledging age and mass were explained by growth rate or hatching date in five out of six years. Faster-growing chicks fledged younger and heavier, and earlier-hatched chicks fledged older and heavier. Consequently, no apparent correlation between fledging age and mass was observed in five out of six years. Analysis of interyear variation showed a negative correlation between fledging age and mass, which indicates that growth rates rather than hatching dates had a major effect. Wing length at fledging was independent of growth in mass. More than 80% of chicks fledged when they attained a narrow range of wing length (130–150 mm), presumably because they remained in their nests until they attained the critical wing length. In five out of six years, the chicks did not synchronize timing of fledging relative to timing of hatching. Later-hatched chicks attained lighter peak masses and at younger ages, which may indicate that their parents decreased provisioning rates when the chicks were still young. We suggest that (1) critical wing length at fledging and (2) variable parental provisioning according to timing of breeding could be underlying mechanisms determining these relationships between fledging age and mass.

The effects of maternal presence on natal dispersal are seasonally flexible in an asocial rodent

2015 ◽  
Vol 69 (7) ◽  
pp. 1075-1084 ◽  
Author(s):  
Shinsuke H. Sakamoto ◽  
Takeshi Eto ◽  
Yoshinobu Okubo ◽  
Akio Shinohara ◽  
Tetsuo Morita ◽  
...  
Keyword(s):  
Natal Dispersal ◽  
Maternal Presence

scholarly journals Habitat Choice and Niche Characteristics Under Poor Food Conditions. A Study on Migratory Nearctic Shorebirds in the Intertidal Flats of Brazil

Ardea ◽  
2009 ◽  
Vol 97 (1) ◽  
pp. 31-42 ◽  
Author(s):  
Kerstin Kober ◽  
Franz Bairlein
Keyword(s):  
Habitat Choice ◽  
Intertidal Flats ◽  
Food Conditions

scholarly journals Phenology of two interdependent traits in migratory birds in response to climate change

2015 ◽  
Vol 282 (1807) ◽  
pp. 20150288 ◽  
Author(s):  
Nadiah Pardede Kristensen ◽  
Jacob Johansson ◽  
Jörgen Ripa ◽  
Niclas Jonzén
Keyword(s):  
Climate Change ◽  
Resource Availability ◽  
Migratory Birds ◽  
Egg Laying ◽  
The Other ◽  
Sufficient Evidence ◽  
Hatching Date ◽  
Arrival Date ◽  
Body Of Knowledge ◽  
Asynchronous Hatching

In migratory birds, arrival date and hatching date are two key phenological markers that have responded to global warming. A body of knowledge exists relating these traits to evolutionary pressures. In this study, we formalize this knowledge into general mathematical assumptions, and use them in an ecoevolutionary model. In contrast to previous models, this study novelty accounts for both traits—arrival date and hatching date—and the interdependence between them, revealing when one, the other or both will respond to climate. For all models sharing the assumptions, the following phenological responses will occur. First, if the nestling-prey peak is late enough, hatching is synchronous with, and arrival date evolves independently of, prey phenology. Second, when resource availability constrains the length of the pre-laying period, hatching is adaptively asynchronous with prey phenology. Predictions for both traits compare well with empirical observations. In response to advancing prey phenology, arrival date may advance, remain unchanged, or even become delayed; the latter occurring when egg-laying resources are only available relatively late in the season. The model shows that asynchronous hatching and unresponsive arrival date are not sufficient evidence that phenological adaptation is constrained. The work provides a framework for exploring microevolution of interdependent phenological traits.

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