Journal of Radiation Research, Vol. 56, No. S1, 2016, p. i63 doi: 10.1093/jrr/rrv095 Special Issue – Fukushima

Abstracts Monitoring of avian productivity and tail feathers Kiyoaki Ozaki Division of Avian Conservation, Yamashina Institute for Ornithology, 115 Konoyama, Abiko, Chiba 270-1145, Japan Yamashina Institute for Ornithology, 115 Konoyama, Abiko, Chiba 270-1145, Japan. Tel.: +81-47182-1107; Fax: +81-47182-4342; Email: [email protected]

It is possible that breeding populations of local birds are affected when the birds’ breeding environment and food resources are contaminated by radioactive substances. Since birds have considerable capacity for movement and dispersal, not only population data but also the birth rate ( productivity) and the survival rate are important parameters when investigating breeding populations. Since the late 1980s, Europe (CES, Constant Effort Site Ringing) and the USA (MAPS, Monitoring Avian Productivity and Survivorship) have been conducting standardized monitoring of bird reproduction using individual marking at a national scale. These investigations provide data (such as population index, birth rate index and adult bird survival rate index), which enable us not only to understand the dynamics of bird populations, but also to understand the variables affecting those dynamics. General census methods counting individual birds cannot obtain survival rate data, making it difficult to analyze factors affecting population change. In Japan, we started monitoring during the breeding season, as mentioned above. Monitoring was conducted at sites in Hokkaido (2) and in six prefectures, including Fukushima (3), Niigata (1) and Tottori (1). By comparing indexes for population, birth rate and survival rate for each year, we can detect yearly changes (from fixed-point observation) and place-dependent differences, even on a global scale. These data are expected to become a powerful tool for evaluation of short- and long-term influences on birds from the radiological pollution from the Fukushima Nuclear Power Plant accident. Common reed Bunting (Emberiza shoeniclus) is widely distributed over the Eurasian Continent. In Japan, it breeds in Hokkaido and in the northern part of Honshu, and it winters in the southern part of Honshu, Shikoku and Kyushu. 15 000–20 000 are ringed annually in Japan, and the total number ringed since 1961 is approximately 440,000. This is the second largest number ringed following 900,000 of Black-faced Bunting (Emberiza spodocephala). Common Reed

Buntings breed in wetlands and grassland, and mainly inhabit reed beds during the migration and wintering period. Abnormalities in the tail feathers of Common Reed Bunting were found at the Fukushimalagoon monitoring station at Niigata Prefecture in October 2011. Since, the phenomenon had never been observed before at that place, we called bird-banders from all over Japan to collect data of tail anomalies. Data from 17 places in 14 prefectures from Fukushima to Kagoshima were reported up until Spring 2012. Abnormalities of the tail feather were found in 767 out of 5541 birds. The abnormalities were found at all of the localities examined, but the frequency varied from place to place. Of the locations where >100 birds were released, Iwata city in Shizuoka had the highest frequency (25.6%), the second highest frequency was recorded at Yasugi city, Tottori (20.1%), and the lowest frequency was found in Oota-ku, Tokyo (1.6%). Almost all abnormalities were found in juveniles (97.3%). It was reported that abnormality in length in the tail feathers or partial whitening were observed of Barn Swallows in Chernobyl. Although that was said to be associated with radiaoactive materials, that observation is not consistent with our findings. Some parts of Common Reed Bunting population pass through Fukushima prefecture during migration, but it is unlikely that their genes will be altered during the short period of stay. Similar tail abnormalities were found all over Japan in the following years. Recently, tail abnormalities are also found on other species including Black-faced Buntings and Siberian Rubythroats (Luscinia calliope). Further investigation is needed on this matter, including the cause of this phenomenon.

FUNDING This study was supported by Mitsui & Co., Ltd. Environment Fund. Funding to pay the Open Access publication charges for this special issue was provided by the Grant-in-Aid from the Japan Society for the Promotion of Science (JSPS) [KAKENHI Grant No. 26253022].

© The Author 2016. Published by Oxford University Press on behalf of The Japan Radiation Research Society and Japanese Society for Radiation Oncology. This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/4.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited. For commercial re-use, please contact [email protected]

• i63

Monitoring of avian productivity and tail feathers.

Monitoring of avian productivity and tail feathers. - PDF Download Free
NAN Sizes 1 Downloads 8 Views

Recommend Documents


Coevolution of caudal skeleton and tail feathers in birds.
Birds are capable of a wide range of aerial locomotor behaviors in part because of the derived structure and function of the avian tail. The tail apparatus consists of a several mobile (free) caudal vertebrae, a terminal skeletal element (the pygosty

Harmonic hopping, and both punctuated and gradual evolution of acoustic characters in Selasphorus hummingbird tail-feathers.
Models of character evolution often assume a single mode of evolutionary change, such as continuous, or discrete. Here I provide an example in which a character exhibits both types of change. Hummingbirds in the genus Selasphorus produce sound with f

Feathers as a source of RNA for genomic studies in avian species.
Dioxins and dioxin-like chemicals (DLCs) cause a suite of adverse effects in terrestrial species. Most of the adverse effects occur subsequent to binding to the aryl hydrocarbon receptor. Avian species vary in their sensitivity to the effects of DLCs

Sexual Dimorphism and Population Differences in Structural Properties of Barn Swallow (Hirundo rustica) Wing and Tail Feathers.
Sexual selection and aerodynamic forces affecting structural properties of the flight feathers of birds are poorly understood. Here, we compared the structural features of the innermost primary wing feather (P1) and the sexually dimorphic outermost (

Mercury levels in avian feathers from different trophic levels of eight families collected from the northern region of Iran.
Mercury levels were determined in feathers from 83 birds belonging to 18 species (eight families), all collected from the northern region of Iran. Mercury levels were evaluated in relation to taxonomic affiliation and feeding strategies. Mercury leve

Contaminants in the southern tip of South America: Analysis of organochlorine compounds in feathers of avian scavengers from Argentinean Patagonia.
The aim of this study was to assess the exposure to organochlorine compounds (OC) in 91 primary wing feathers of avian scavengers, Turkey vulture (Cathartes aura), American black vulture (Coragyps atratus) and Southern crested caracaras (Polyborus pl

Unzipping bird feathers.
The bird feather vane can be separated into two parts by pulling the barbs apart. The original state can be re-established easily by lightly stroking through the feather. Hooklets responsible for holding vane barbs together are not damaged by multipl

Non-food industrial applications of poultry feathers.
Poultry feathers are one of the unique coproducts that have versatile applications ranging from composites, fibers, tissue engineering scaffolds, nano and micro particles, electronic devices and many others. Despite their low cost, abundant availabil

Monitoring the stress-level of rats with different types of anesthesia: a tail-artery cannulation protocol.
Functional MRI in rats under anesthesia can largely minimize motion artifacts and attenuate the stress of the animal. However, two issues remain to be clarified and improved. First, fMRI results obtained with different types of anesthesia during surg