Density and reproductive characteristics of female brown bears in the Cantabrian Mountains, NW Spain
Here we present annual nearest-neighbour distances (as a proxy of density) between females with cubs-of-the-year (hereafter FCOY) and reproductive characteristics of brown bears Ursus arctos in the Cantabrian Mountains (NW Spain), from 1989 to 2017. FCOY nearest-neighbour distances and reproduction...
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ftdoajarticles:oai:doaj.org/article:164604abdd06464f8944df9fee50c08d 2023-05-15T18:41:59+02:00 Density and reproductive characteristics of female brown bears in the Cantabrian Mountains, NW Spain V. Penteriani A. Zarzo-Arias G. Bombieri D. Cañedo J. Díaz García M. M. Delgado P. Peón Torre M. Fernández Otero P. Vázquez García V. M. Vázquez T. Sánchez Corominas 2018-01-01T00:00:00Z https://doi.org/10.1080/24750263.2018.1499826 https://doaj.org/article/164604abdd06464f8944df9fee50c08d EN eng Taylor & Francis Group http://dx.doi.org/10.1080/24750263.2018.1499826 https://doaj.org/toc/2475-0263 2475-0263 doi:10.1080/24750263.2018.1499826 https://doaj.org/article/164604abdd06464f8944df9fee50c08d The European Zoological Journal, Vol 85, Iss 1, Pp 312-320 (2018) Cub mortality interval between litters litter size reproductive rate Ursus arctos Zoology QL1-991 article 2018 ftdoajarticles https://doi.org/10.1080/24750263.2018.1499826 2022-12-31T00:14:40Z Here we present annual nearest-neighbour distances (as a proxy of density) between females with cubs-of-the-year (hereafter FCOY) and reproductive characteristics of brown bears Ursus arctos in the Cantabrian Mountains (NW Spain), from 1989 to 2017. FCOY nearest-neighbour distances and reproduction parameters of 19 focal females followed over several consecutive years (from 2004 to 2017) were obtained from bears inhabiting the western sector of the Cantabrian Mountains, where most of the bear population resides. In contrast, general reproductive characteristics were studied in the whole Cantabrian Mountains (western and eastern sectors together) on a sample of 362 litter sizes and 695 cubs. Mean nearest-neighbour distance between FCOY was 2559 ± 1222 m (range = 1305–4757 m). Mean litter size was significantly larger in the west (1.8 ± 0.2 cubs) than in the east (1.3 ± 0.6 cubs). Mean litter size for the whole of the Cantabrian Mountains was 1.6 ± 0.3 cubs. Litter sizes of one, two and three cubs represented 33.4, 56.1 and 10.5% of observed family groups, respectively. Interannual variations in litter size were not significant for both the western and the eastern areas. Mean cub mortality was 0.2 ± 0.5 cubs and did not vary among years. Cub mortality per litter size was 3.9% for one cub, 69.2% for two cubs and 26.9% for three cubs. Mean reproductive rate of the 19 focal females was 1.5 ± 0.6 cubs (n = 58 litters). Litter size of focal FCOY did not differ from the litter size obtained from systematic observations in the whole Cantabrian Mountains. During this period, cub mortality occurred in 24.1% of the 58 litters. Females usually bred every second year (average litter interval = 2.2 years). The estimated reproductive rate for the bear population was 0.7 young born/year/reproductive adult female. Article in Journal/Newspaper Ursus arctos Directory of Open Access Journals: DOAJ Articles The European Zoological Journal 85 1 312 320 |
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Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Cub mortality interval between litters litter size reproductive rate Ursus arctos Zoology QL1-991 |
spellingShingle |
Cub mortality interval between litters litter size reproductive rate Ursus arctos Zoology QL1-991 V. Penteriani A. Zarzo-Arias G. Bombieri D. Cañedo J. Díaz García M. M. Delgado P. Peón Torre M. Fernández Otero P. Vázquez García V. M. Vázquez T. Sánchez Corominas Density and reproductive characteristics of female brown bears in the Cantabrian Mountains, NW Spain |
topic_facet |
Cub mortality interval between litters litter size reproductive rate Ursus arctos Zoology QL1-991 |
description |
Here we present annual nearest-neighbour distances (as a proxy of density) between females with cubs-of-the-year (hereafter FCOY) and reproductive characteristics of brown bears Ursus arctos in the Cantabrian Mountains (NW Spain), from 1989 to 2017. FCOY nearest-neighbour distances and reproduction parameters of 19 focal females followed over several consecutive years (from 2004 to 2017) were obtained from bears inhabiting the western sector of the Cantabrian Mountains, where most of the bear population resides. In contrast, general reproductive characteristics were studied in the whole Cantabrian Mountains (western and eastern sectors together) on a sample of 362 litter sizes and 695 cubs. Mean nearest-neighbour distance between FCOY was 2559 ± 1222 m (range = 1305–4757 m). Mean litter size was significantly larger in the west (1.8 ± 0.2 cubs) than in the east (1.3 ± 0.6 cubs). Mean litter size for the whole of the Cantabrian Mountains was 1.6 ± 0.3 cubs. Litter sizes of one, two and three cubs represented 33.4, 56.1 and 10.5% of observed family groups, respectively. Interannual variations in litter size were not significant for both the western and the eastern areas. Mean cub mortality was 0.2 ± 0.5 cubs and did not vary among years. Cub mortality per litter size was 3.9% for one cub, 69.2% for two cubs and 26.9% for three cubs. Mean reproductive rate of the 19 focal females was 1.5 ± 0.6 cubs (n = 58 litters). Litter size of focal FCOY did not differ from the litter size obtained from systematic observations in the whole Cantabrian Mountains. During this period, cub mortality occurred in 24.1% of the 58 litters. Females usually bred every second year (average litter interval = 2.2 years). The estimated reproductive rate for the bear population was 0.7 young born/year/reproductive adult female. |
format |
Article in Journal/Newspaper |
author |
V. Penteriani A. Zarzo-Arias G. Bombieri D. Cañedo J. Díaz García M. M. Delgado P. Peón Torre M. Fernández Otero P. Vázquez García V. M. Vázquez T. Sánchez Corominas |
author_facet |
V. Penteriani A. Zarzo-Arias G. Bombieri D. Cañedo J. Díaz García M. M. Delgado P. Peón Torre M. Fernández Otero P. Vázquez García V. M. Vázquez T. Sánchez Corominas |
author_sort |
V. Penteriani |
title |
Density and reproductive characteristics of female brown bears in the Cantabrian Mountains, NW Spain |
title_short |
Density and reproductive characteristics of female brown bears in the Cantabrian Mountains, NW Spain |
title_full |
Density and reproductive characteristics of female brown bears in the Cantabrian Mountains, NW Spain |
title_fullStr |
Density and reproductive characteristics of female brown bears in the Cantabrian Mountains, NW Spain |
title_full_unstemmed |
Density and reproductive characteristics of female brown bears in the Cantabrian Mountains, NW Spain |
title_sort |
density and reproductive characteristics of female brown bears in the cantabrian mountains, nw spain |
publisher |
Taylor & Francis Group |
publishDate |
2018 |
url |
https://doi.org/10.1080/24750263.2018.1499826 https://doaj.org/article/164604abdd06464f8944df9fee50c08d |
genre |
Ursus arctos |
genre_facet |
Ursus arctos |
op_source |
The European Zoological Journal, Vol 85, Iss 1, Pp 312-320 (2018) |
op_relation |
http://dx.doi.org/10.1080/24750263.2018.1499826 https://doaj.org/toc/2475-0263 2475-0263 doi:10.1080/24750263.2018.1499826 https://doaj.org/article/164604abdd06464f8944df9fee50c08d |
op_doi |
https://doi.org/10.1080/24750263.2018.1499826 |
container_title |
The European Zoological Journal |
container_volume |
85 |
container_issue |
1 |
container_start_page |
312 |
op_container_end_page |
320 |
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1766231584487243776 |