Carry‐over effects of environmental stochasticity of the California Current on body condition and wing length of breeding Black‐vented Shearwaters ( Puffinus opisthomelas )

Ibis ◽  
2021 ◽  
Author(s):  
Cecilia Soldatini ◽  
Martha Patricia Rosas Hernandez ◽  
Yuri V. Albores‐Barajas ◽  
Giulia Bambini ◽  
Adrian Munguia‐Vega ◽  
...  
Keyword(s):  
Body Condition ◽  
Wing Length ◽  
California Current ◽  
Environmental Stochasticity ◽  
Carry Over

scholarly journals Post-metamorphic carry-over effects of altered thyroid hormone level and developmental temperature: physiological plasticity and body condition at two life stages in Rana temporaria

2020 ◽  
Vol 190 (3) ◽  
pp. 297-315 ◽  
Author(s):  
Katharina Ruthsatz ◽  
Kathrin H. Dausmann ◽  
Steffen Reinhardt ◽  
Tom Robinson ◽  
Nikita M. Sabatino ◽  
...  
Keyword(s):  
Thyroid Hormone ◽  
Body Condition ◽  
Hormone Level ◽  
Rana Temporaria ◽  
Thyroid Hormone Level ◽  
Life Stages ◽  
Physiological Plasticity ◽  
Developmental Temperature ◽  
Carry Over ◽  
Altered Thyroid

scholarly journals Philopatry to Stopover Site and Body Condition of Transient Reed Warblers During Autumn Migration Through Israel

The Condor ◽  
2000 ◽  
Vol 102 (2) ◽  
pp. 441-444 ◽  
Author(s):  
Kobi Merom ◽  
Yoram Yom-Tov ◽  
Robin McClery
Keyword(s):  
Body Mass ◽  
Body Condition ◽  
Wing Length ◽  
First Year ◽  
Sahara Desert ◽  
Stopover Site ◽  
Acrocephalus Scirpaceus ◽  
The Mean ◽  
High Degree ◽  
Mass Increase

Abstract Philopatry to stopover site and changes in body condition of migrating Reed Warblers Acrocephalus scirpaceus were studied in Bet Shean Valley, Israel, where warblers were netted throughout the year. Although the majority of birds were seen only once, the proportion of transients seen twice or more in different years is comparable to the figure for summer residents returning between years, indicating a high degree of philopatry among transients. Transients get heavier with longer duration of stay, up to about 15 days, after which body mass increase appears to level off at about 3 g. Change in body condition, taken to be body mass divided by wing length, also was noted, albeit of less significance. The mean date of arrival in the autumn of birds in their first year was about 20 days later than that of older birds. Reed Warblers use their time effectively to replenish their body mass and improve their condition before starting the dangerous crossing of the Sahara Desert.

scholarly journals Feather corticosterone reveals effect of moulting conditions in the autumn on subsequent reproductive output and survival in an Arctic migratory bird

2015 ◽  
Vol 282 (1800) ◽  
pp. 20142085 ◽  
Author(s):  
N. Jane Harms ◽  
Pierre Legagneux ◽  
H. Grant Gilchrist ◽  
Joël Bêty ◽  
Oliver P. Love ◽  
...  
Keyword(s):  
Reproductive Success ◽  
Body Condition ◽  
Migratory Bird ◽  
Cholera Outbreak ◽  
Fitness Effects ◽  
Individual Fitness ◽  
Path Analyses ◽  
Avian Cholera ◽  
Carry Over ◽  
Non Destructive

For birds, unpredictable environments during the energetically stressful times of moulting and breeding are expected to have negative fitness effects. Detecting those effects however, might be difficult if individuals modulate their physiology and/or behaviours in ways to minimize short-term fitness costs. Corticosterone in feathers (CORTf) is thought to provide information on total baseline and stress-induced CORT levels at moulting and is an integrated measure of hypothalamic–pituitary–adrenal activity during the time feathers are grown. We predicted that CORTf levels in northern common eider females would relate to subsequent body condition, reproductive success and survival, in a population of eiders nesting in the eastern Canadian Arctic during a capricious period marked by annual avian cholera outbreaks. We collected CORTf data from feathers grown during previous moult in autumn and data on phenology of subsequent reproduction and survival for 242 eider females over 5 years. Using path analyses, we detected a direct relationship between CORTf and arrival date and body condition the following year. CORTf also had negative indirect relationships with both eider reproductive success and survival of eiders during an avian cholera outbreak. This indirect effect was dramatic with a reduction of approximately 30% in subsequent survival of eiders during an avian cholera outbreak when mean CORTf increased by 1 standard deviation. This study highlights the importance of events or processes occurring during moult on subsequent expression of life-history traits and relation to individual fitness, and shows that information from non-destructive sampling of individuals can track carry-over effects across seasons.

Body Mass, Wing Length, and Condition of Wintering Ducks Relative to Hematozoa Infection

2017 ◽  
Vol 8 (1) ◽  
pp. 89-100 ◽  
Author(s):  
Joseph P. Fleskes ◽  
Andrew M. Ramey ◽  
Andrew B. Reeves ◽  
Julie L. Yee
Keyword(s):  
Body Mass ◽  
Body Condition ◽  
Wing Length ◽  
Negative Relationship ◽  
Central Valley ◽  
Condition Index ◽  
Blood Parasites ◽  
Infection Prevalence ◽  
Body Condition Index ◽  
Northern Pintail

Abstract Waterfowl managers lack information regarding factors that may be reducing the positive response of waterfowl body condition to habitat improvements. Protozoan blood parasites (i.e., hematozoa) are commonly found in birds and have been related to reduced body mass, wing length, and body condition. We studied relationships between 12 measures of hematozoa infection and body mass, wing length, and body mass divided by wing length (i.e., body condition index) of the five most common duck species (northern pintail [Anas acuta], mallard [A. platyrhynchos], green-winged teal [A. crecca], American wigeon [A. americana], northern shoveler [A. clypeata]) wintering in the Central Valley of California during October 2006–January 2007. After accounting for variation due to species, age–sex cohort, Central Valley region, and month, wing length, body mass, and body condition index were found to be negatively related to infection by Leucocytozoon and by “any hematozoa” but not related to infection by only Plasmodium or Haemoproteus, or coinfections of greater than one genus or parasite haplotype (albeit few ducks had Plasmodium or Haemoproteus infection or coinfections). Evidence of a negative relationship with infection was stronger for body mass and body condition index than for wing length and indicated that the relationships varied among species, age–sex cohorts, regions, and months. Compared with uninfected ducks, hematozoa-infected duck body mass, wing length, and body condition index was −1.63% (85% CI = −2.79% to −0.47%), −0.12% (−0.41% to 0.17%), and −1.38% (−2.49% to −0.26%), respectively. Although seemingly small, the −1.63% difference in body mass represents a large percentage (e.g., 38% for northern pintail) of the observed increase in wintering duck body mass associated with Central Valley habitat improvements. Because infection prevalence and relationship to body condition might change over time because of climate or other factors, tracking hematozoa infection prevalence might be important to inform and accurately assess the effect of conservation programs designed to improve waterfowl body condition.

Leg-mounted data-loggers do not affect the reproductive performance of short-tailed shearwaters (Puffinus tenuirostris)

2011 ◽  
Vol 38 (8) ◽  
pp. 740 ◽  
Author(s):  
Mark J. Carey
Keyword(s):  
Body Condition ◽  
Data Logger ◽  
Negative Effects ◽  
Adult Body Mass ◽  
Data Loggers ◽  
Adult Body ◽  
Puffinus Tenuirostris ◽  
Carry Over ◽  
Breeding Seasons ◽  
Tracking Devices

Context Attaching tracking devices to several avian species could produce negative outcomes. Of particular concern are potential alterations to birds’ reproductive, flight, diving and foraging performances. Attachment of devices may also lead to a bias in results or an inaccurate interpretation of results as birds may not behave ‘normally’. Aims The aims of the present study were to evaluate the possible effects of a 5.4-g global location-sensing (GLS) data-logger attached to a modified aluminium band on short-tailed shearwaters (Puffinus tenuirostris (Temminck, 1835)), representing 0.7–1% of adult body mass, breeding on Great Dog Island, Furneaux Group, Tasmania. Methods Eighty birds were monitored during two breeding seasons. Twenty-seven GLS data-loggers were attached to birds in 2007, with the remaining birds acting as controls. Breeding success, return rates and body condition were compared between equipped and non-equipped birds. Key results In the year of deployment, no evidence of negative effects of attaching data-loggers on hatching success, pre-fledging chick mass or survival was found. However, chicks reared by non-equipped adults were skeletally larger. After controlling for body size, no significant effect on chick body condition was detected between the two groups. In the year of recapture, significantly more GLS-equipped than non-equipped adults returned to the colony. There were no differences in adult body condition, egg size, hatching or fledging success between the two groups. After GLS devices were removed, chick mass and size at pre-fledging were equal between those raised by GLS-equipped and non-equipped adults. Conclusions These results suggest that appropriate-sized data-loggers are a relatively benign method of obtaining at-sea foraging and behavioural information from seabirds. However, loggers may be affecting parental care of offspring and this requires further investigation. Importantly, no carry-over effects were observed once the data-loggers were removed after 12 months. Implications Identifying any effects of data-logger attachment is imperative for animal welfare but also for the accuracy of tracking data and subsequent interpretation. GLS devices are rapidly becoming smaller and lighter, and if this trend continues, unlock unprecedented opportunities for pelagic seabird research. During long deployments, monitoring individuals and assessing their health and reproductive output should be considered an integral part of all bio-logging studies.

Blood parasites, body condition, and wing length in two subspecies of yellow wagtail (Motacilla flava) during migration

2012 ◽  
Vol 110 (5) ◽  
pp. 2043-2051 ◽  
Author(s):  
Peter Shurulinkov ◽  
Nayden Chakarov ◽  
Girgina Daskalova
Keyword(s):  
Body Condition ◽  
Wing Length ◽  
Blood Parasites ◽  
Yellow Wagtail

scholarly journals Winter carry-over effects on spring body condition driven by agricultural subsidies to Lesser Snow Geese (Anser caerulescens caerulescens)

2020 ◽  
Vol 15 (2) ◽  
Author(s):  
Drew N. Fowler ◽  
Elisabeth B. Webb ◽  
Mark P. Vrtiska ◽  
Keith A. Hobson
Keyword(s):  
Body Condition ◽  
Agricultural Subsidies ◽  
Snow Geese ◽  
Lesser Snow Geese ◽  
Anser Caerulescens Caerulescens ◽  
Anser Caerulescens ◽  
Carry Over

scholarly journals Experimental heating reveals nest temperature affects nestling condition in tree swallows ( Tachycineta bicolor )

2008 ◽  
Vol 4 (5) ◽  
pp. 468-471 ◽  
Author(s):  
Jonathan H Pérez ◽  
Daniel R Ardia ◽  
Elise K Chad ◽  
Ethan D Clotfelter
Keyword(s):  
Life History ◽  
Body Mass ◽  
Body Condition ◽  
Tachycineta Bicolor ◽  
Tree Swallow ◽  
Life History Stage ◽  
Delayed Effects ◽  
Life History Stages ◽  
Treatment Status ◽  
Carry Over

Investment in one life-history stage can have delayed effects on subsequent life-history stages within a single reproductive bout. We experimentally heated tree swallow ( Tachycineta bicolor ) nests during incubation to test for effects on parental and nestling conditions. Females incubating in heated boxes maintained higher body condition and fed nestlings at higher rates. We cross-fostered nestlings and found that young nestlings (4–7 days old) incubated in heated nests had higher body condition and body mass, regardless of treatment status of their rearing parent. However, older nestlings which were fed by heated females maintained higher condition and body mass regardless of treatment status of their incubating parent. These results indicate that investment in one life-history stage can have multiple pathways of carry-over effects on future life-history stages.

scholarly journals Carry-Over or Compensation? The Impact of Winter Harshness and Post-Winter Body Condition on Spring-Fattening in a Migratory Goose Species

PLoS ONE ◽  
2015 ◽  
Vol 10 (7) ◽  
pp. e0132312 ◽  
Author(s):  
Kevin K. Clausen ◽  
Jesper Madsen ◽  
Ingunn M. Tombre
Keyword(s):  
Body Condition ◽  
Carry Over ◽  
The Impact ◽  
Goose Species

Carry-over effects of body condition in the early pregnant ewe on peri-partum adipose tissue metabolism

2011 ◽  
Vol 96 (6) ◽  
pp. 985-992 ◽  
Author(s):  
J. Álvarez-Rodríguez ◽  
G. Estopañan ◽  
A. Sanz ◽  
E. Dervishi ◽  
N. Govoni ◽  
...  
Keyword(s):  
Adipose Tissue ◽  
Body Condition ◽  
Adipose Tissue Metabolism ◽  
Tissue Metabolism ◽  
Carry Over ◽  
Pregnant Ewe
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