Data from: Birth dates vary with fixed and dynamic maternal features, offspring sex, and extreme climatic events in a high-latitude marine mammal
Reproductive synchrony tends to be widespread in diverse species of plants and animals, especially at higher latitudes. However, for long-lived mammals, birth dates for different individuals can vary by weeks within a population. A mother's birth timing can reveal useful information about her r...
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Online Access: | https://doi.org/10.5061/dryad.93f51 |
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fttriple:oai:gotriple.eu:50|dedup_wf_001::9a47b47399e4006d3be525342e55c466 2023-05-15T13:32:31+02:00 Data from: Birth dates vary with fixed and dynamic maternal features, offspring sex, and extreme climatic events in a high-latitude marine mammal Rotella, Jay J. Paterson, J. Terrill Garrott, Robert A. 2017-01-01 https://doi.org/10.5061/dryad.93f51 en eng Dryad http://dx.doi.org/10.5061/dryad.93f51 https://dx.doi.org/10.5061/dryad.93f51 lic_creative-commons 10.5061/dryad.93f51 oai:easy.dans.knaw.nl:easy-dataset:92234 oai:services.nod.dans.knaw.nl:Products/dans:oai:easy.dans.knaw.nl:easy-dataset:92234 10|openaire____::9e3be59865b2c1c335d32dae2fe7b254 10|re3data_____::94816e6421eeb072e7742ce6a9decc5f 10|openaire____::081b82f96300b6a6e3d282bad31cb6e2 re3data_____::r3d100000044 10|re3data_____::84e123776089ce3c7a33db98d9cd15a8 10|eurocrisdris::fe4903425d9040f680d8610d9079ea14 10|opendoar____::8b6dd7db9af49e67306feb59a8bdc52c Leptonychotes weddellii maternal effects birth timing birth dates Population Ecology Weddell seals Antarctica Life sciences medicine and health care demo envir Dataset https://vocabularies.coar-repositories.org/resource_types/c_ddb1/ 2017 fttriple https://doi.org/10.5061/dryad.93f51 2023-01-22T16:53:09Z Reproductive synchrony tends to be widespread in diverse species of plants and animals, especially at higher latitudes. However, for long-lived mammals, birth dates for different individuals can vary by weeks within a population. A mother's birth timing can reveal useful information about her reproductive abilities and have important implications for the characteristics and survival of her offspring. Despite this, our current knowledge of factors associated with variation in birth dates is modest. We used long-term data for known-age Weddell seals in Antarctica and a Bayesian hierarchical modeling approach to study how birth dates varied with fixed and temporally varying features of mothers, whether sex allocation varied with birth timing, and annual variation in birth dates. Based on birth dates for 4465 pups born to 1117 mothers aged 4–31, we found that diverse features of mothers were associated with variation in birth dates. Maternal identity was the most important among these. Unlike most studies, which have reported that birth dates occur earlier as mothers age, we found that birth dates progressively occurred earlier in the year in the early part of a mother's reproductive life, reached a minimum at age 16, and then occurred later at later ages. Birth dates were positively related to a mother's age at primiparity and recent reproductive effort. The earliest birth dates were for pups born to prime-age mothers who did not reproduce in the previous year but began reproduction early in life, suggesting that females in the best condition gave birth earlier than others. If so, our finding that male pups tended to be born earlier than females provides support for the Trivers–Willard sex-allocation model. Average birth dates were quite consistent across years, except for 2 years that had notable delays and occurred during the period when massive icebergs were present and disrupted the ecosystem. WESE_birthscsv file containing data on pup birth dates, pup sex, year of birth, and attributes of mothers for Weddell ... Dataset Antarc* Antarctica Weddell Seals Unknown Weddell |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
fttriple |
language |
English |
topic |
Leptonychotes weddellii maternal effects birth timing birth dates Population Ecology Weddell seals Antarctica Life sciences medicine and health care demo envir |
spellingShingle |
Leptonychotes weddellii maternal effects birth timing birth dates Population Ecology Weddell seals Antarctica Life sciences medicine and health care demo envir Rotella, Jay J. Paterson, J. Terrill Garrott, Robert A. Data from: Birth dates vary with fixed and dynamic maternal features, offspring sex, and extreme climatic events in a high-latitude marine mammal |
topic_facet |
Leptonychotes weddellii maternal effects birth timing birth dates Population Ecology Weddell seals Antarctica Life sciences medicine and health care demo envir |
description |
Reproductive synchrony tends to be widespread in diverse species of plants and animals, especially at higher latitudes. However, for long-lived mammals, birth dates for different individuals can vary by weeks within a population. A mother's birth timing can reveal useful information about her reproductive abilities and have important implications for the characteristics and survival of her offspring. Despite this, our current knowledge of factors associated with variation in birth dates is modest. We used long-term data for known-age Weddell seals in Antarctica and a Bayesian hierarchical modeling approach to study how birth dates varied with fixed and temporally varying features of mothers, whether sex allocation varied with birth timing, and annual variation in birth dates. Based on birth dates for 4465 pups born to 1117 mothers aged 4–31, we found that diverse features of mothers were associated with variation in birth dates. Maternal identity was the most important among these. Unlike most studies, which have reported that birth dates occur earlier as mothers age, we found that birth dates progressively occurred earlier in the year in the early part of a mother's reproductive life, reached a minimum at age 16, and then occurred later at later ages. Birth dates were positively related to a mother's age at primiparity and recent reproductive effort. The earliest birth dates were for pups born to prime-age mothers who did not reproduce in the previous year but began reproduction early in life, suggesting that females in the best condition gave birth earlier than others. If so, our finding that male pups tended to be born earlier than females provides support for the Trivers–Willard sex-allocation model. Average birth dates were quite consistent across years, except for 2 years that had notable delays and occurred during the period when massive icebergs were present and disrupted the ecosystem. WESE_birthscsv file containing data on pup birth dates, pup sex, year of birth, and attributes of mothers for Weddell ... |
format |
Dataset |
author |
Rotella, Jay J. Paterson, J. Terrill Garrott, Robert A. |
author_facet |
Rotella, Jay J. Paterson, J. Terrill Garrott, Robert A. |
author_sort |
Rotella, Jay J. |
title |
Data from: Birth dates vary with fixed and dynamic maternal features, offspring sex, and extreme climatic events in a high-latitude marine mammal |
title_short |
Data from: Birth dates vary with fixed and dynamic maternal features, offspring sex, and extreme climatic events in a high-latitude marine mammal |
title_full |
Data from: Birth dates vary with fixed and dynamic maternal features, offspring sex, and extreme climatic events in a high-latitude marine mammal |
title_fullStr |
Data from: Birth dates vary with fixed and dynamic maternal features, offspring sex, and extreme climatic events in a high-latitude marine mammal |
title_full_unstemmed |
Data from: Birth dates vary with fixed and dynamic maternal features, offspring sex, and extreme climatic events in a high-latitude marine mammal |
title_sort |
data from: birth dates vary with fixed and dynamic maternal features, offspring sex, and extreme climatic events in a high-latitude marine mammal |
publisher |
Dryad |
publishDate |
2017 |
url |
https://doi.org/10.5061/dryad.93f51 |
geographic |
Weddell |
geographic_facet |
Weddell |
genre |
Antarc* Antarctica Weddell Seals |
genre_facet |
Antarc* Antarctica Weddell Seals |
op_source |
10.5061/dryad.93f51 oai:easy.dans.knaw.nl:easy-dataset:92234 oai:services.nod.dans.knaw.nl:Products/dans:oai:easy.dans.knaw.nl:easy-dataset:92234 10|openaire____::9e3be59865b2c1c335d32dae2fe7b254 10|re3data_____::94816e6421eeb072e7742ce6a9decc5f 10|openaire____::081b82f96300b6a6e3d282bad31cb6e2 re3data_____::r3d100000044 10|re3data_____::84e123776089ce3c7a33db98d9cd15a8 10|eurocrisdris::fe4903425d9040f680d8610d9079ea14 10|opendoar____::8b6dd7db9af49e67306feb59a8bdc52c |
op_relation |
http://dx.doi.org/10.5061/dryad.93f51 https://dx.doi.org/10.5061/dryad.93f51 |
op_rights |
lic_creative-commons |
op_doi |
https://doi.org/10.5061/dryad.93f51 |
_version_ |
1766028178595250176 |