Fixed and flexible: coexistence of obligate and facultative migratory strategies in a freshwater fish.

Migration is an important event in many animal life histories, but the degree to which individual animals participate in seasonal migrations often varies within populations. The powerful ecological and evolutionary consequences of such partial migration are now well documented, but the underlying me...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Jakob Brodersen, Ben B Chapman, P Anders Nilsson, Christian Skov, Lars-Anders Hansson, Christer Brönmark
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2014
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/776d3530a7074f19b7731e0c7cd1856c
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:776d3530a7074f19b7731e0c7cd1856c
record_format	dspace
spelling	oai:doaj.org-article:776d3530a7074f19b7731e0c7cd1856c2021-11-18T08:30:09ZFixed and flexible: coexistence of obligate and facultative migratory strategies in a freshwater fish.1932-620310.1371/journal.pone.0090294https://doaj.org/article/776d3530a7074f19b7731e0c7cd1856c2014-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/24594698/?tool=EBIhttps://doaj.org/toc/1932-6203Migration is an important event in many animal life histories, but the degree to which individual animals participate in seasonal migrations often varies within populations. The powerful ecological and evolutionary consequences of such partial migration are now well documented, but the underlying mechanisms are still heavily debated. One potential mechanism of partial migration is between-individual variation in body condition, where animals in poor condition cannot pay the costs of migration and hence adopt a resident strategy. However, underlying intrinsic traits may overrule such environmental influence, dictating individual consistency in migratory patterns. Unfortunately, field tests of individual consistency compared to the importance of individual condition on migratory propensity are rare. Here we analyse 6 years of field data on roach migration, gathered by tagging almost 3000 individual fish and monitoring their seasonal migrations over extended periods of time. Our aims were to provide a field test of the role of condition in wild fish for migratory decisions, and also to assess individual consistency in migratory tendency. Our analyses reveal that (1) migratory strategy, in terms of migration/residency, is highly consistent within individuals over time and (2) there is a positive relationship between condition and the probability of migration, but only in individuals that adopt a migratory strategy at some point during their lives. However, life-long residents do not differ in condition to migrants, hence body condition is only a good predictor of migratory tendency in fish with migratory phenotypes and not a more general determinant of migratory tendency for the population. As resident individuals can achieve very high body condition and still remain resident, we suggest that our data provides some of the first field evidence to show that both facultative and obligate strategies can co-exist within populations of migratory animals.Jakob BrodersenBen B ChapmanP Anders NilssonChristian SkovLars-Anders HanssonChrister BrönmarkPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 9, Iss 3, p e90294 (2014)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Jakob Brodersen Ben B Chapman P Anders Nilsson Christian Skov Lars-Anders Hansson Christer Brönmark Fixed and flexible: coexistence of obligate and facultative migratory strategies in a freshwater fish.
description	Migration is an important event in many animal life histories, but the degree to which individual animals participate in seasonal migrations often varies within populations. The powerful ecological and evolutionary consequences of such partial migration are now well documented, but the underlying mechanisms are still heavily debated. One potential mechanism of partial migration is between-individual variation in body condition, where animals in poor condition cannot pay the costs of migration and hence adopt a resident strategy. However, underlying intrinsic traits may overrule such environmental influence, dictating individual consistency in migratory patterns. Unfortunately, field tests of individual consistency compared to the importance of individual condition on migratory propensity are rare. Here we analyse 6 years of field data on roach migration, gathered by tagging almost 3000 individual fish and monitoring their seasonal migrations over extended periods of time. Our aims were to provide a field test of the role of condition in wild fish for migratory decisions, and also to assess individual consistency in migratory tendency. Our analyses reveal that (1) migratory strategy, in terms of migration/residency, is highly consistent within individuals over time and (2) there is a positive relationship between condition and the probability of migration, but only in individuals that adopt a migratory strategy at some point during their lives. However, life-long residents do not differ in condition to migrants, hence body condition is only a good predictor of migratory tendency in fish with migratory phenotypes and not a more general determinant of migratory tendency for the population. As resident individuals can achieve very high body condition and still remain resident, we suggest that our data provides some of the first field evidence to show that both facultative and obligate strategies can co-exist within populations of migratory animals.
format	article
author	Jakob Brodersen Ben B Chapman P Anders Nilsson Christian Skov Lars-Anders Hansson Christer Brönmark
author_facet	Jakob Brodersen Ben B Chapman P Anders Nilsson Christian Skov Lars-Anders Hansson Christer Brönmark
author_sort	Jakob Brodersen
title	Fixed and flexible: coexistence of obligate and facultative migratory strategies in a freshwater fish.
title_short	Fixed and flexible: coexistence of obligate and facultative migratory strategies in a freshwater fish.
title_full	Fixed and flexible: coexistence of obligate and facultative migratory strategies in a freshwater fish.
title_fullStr	Fixed and flexible: coexistence of obligate and facultative migratory strategies in a freshwater fish.
title_full_unstemmed	Fixed and flexible: coexistence of obligate and facultative migratory strategies in a freshwater fish.
title_sort	fixed and flexible: coexistence of obligate and facultative migratory strategies in a freshwater fish.
publisher	Public Library of Science (PLoS)
publishDate	2014
url	https://doaj.org/article/776d3530a7074f19b7731e0c7cd1856c
work_keys_str_mv	AT jakobbrodersen fixedandflexiblecoexistenceofobligateandfacultativemigratorystrategiesinafreshwaterfish AT benbchapman fixedandflexiblecoexistenceofobligateandfacultativemigratorystrategiesinafreshwaterfish AT pandersnilsson fixedandflexiblecoexistenceofobligateandfacultativemigratorystrategiesinafreshwaterfish AT christianskov fixedandflexiblecoexistenceofobligateandfacultativemigratorystrategiesinafreshwaterfish AT larsandershansson fixedandflexiblecoexistenceofobligateandfacultativemigratorystrategiesinafreshwaterfish AT christerbronmark fixedandflexiblecoexistenceofobligateandfacultativemigratorystrategiesinafreshwaterfish
_version_	1718421691005140992

Fixed and flexible: coexistence of obligate and facultative migratory strategies in a freshwater fish.

Ejemplares similares