Morphological variation between populations of the expanding ectoparasitic deer ked Lipoptena cervi (Diptera: Hippoboscidae) in Fennoscandia
(2015) In Biological Journal of the Linnean Society 116(2). p.432-448- Abstract
We examined morphological and genetic differences among Fennoscandian deer ked (Lipoptena cervi L, Hippoboscidae) populations with varying expansion history: the eastern population (Finland) has expanded rapidly, whereas the western population is divided into an old and relatively stationary sub-population in Sweden and a newly established and more expansive sub-population in Norway. The genetic analysis suggests that the distinct populations represent a single species. Individuals from expansive populations were characterized by a large body size, relatively large and robust thorax shape, and wing shape with an exaggerated basal posterior margin. Yet, there was no among population variation in relative wing size or its elongated shape... (More)
We examined morphological and genetic differences among Fennoscandian deer ked (Lipoptena cervi L, Hippoboscidae) populations with varying expansion history: the eastern population (Finland) has expanded rapidly, whereas the western population is divided into an old and relatively stationary sub-population in Sweden and a newly established and more expansive sub-population in Norway. The genetic analysis suggests that the distinct populations represent a single species. Individuals from expansive populations were characterized by a large body size, relatively large and robust thorax shape, and wing shape with an exaggerated basal posterior margin. Yet, there was no among population variation in relative wing size or its elongated shape after variation in overall size was controlled for. Although certain size and shape variables showed thermal sensitivity, the degree of plasticity did not differ between the populations. In general, we observed that shape is more sensitive to external thermal conditions at the pupal stage than size per se, with the thermal sensitivity of the latter depending on the trait under examination. We conclude that the possible adaptive value of morphological differences relies on variation in survival during the off-host life stages or short-distance flight to reach a susceptible host instead of long-distance dispersal ability.
(Less)
- author
- Jaakola, Mervi ; Ojanen, Meri ; Hurme, Eija ; Mutanen, Marko ; Wahlberg, Niklas LU ; Välimäki, Panu and Kaitala, Arja
- organization
- publishing date
- 2015-10-01
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Development temperature, Geometric morphometrics, Invasive species, Phenotypic plasticity, Pupal phase, Pupiparous, Range expansion, Temperature-size rule, Viviparous
- in
- Biological Journal of the Linnean Society
- volume
- 116
- issue
- 2
- pages
- 17 pages
- publisher
- Oxford University Press
- external identifiers
-
- scopus:84941117340
- ISSN
- 0024-4066
- DOI
- 10.1111/bij.12587
- language
- English
- LU publication?
- yes
- id
- efe297c8-f011-4dcf-b486-d75fde32e385
- date added to LUP
- 2016-04-27 21:14:10
- date last changed
- 2022-03-31 23:36:04
@article{efe297c8-f011-4dcf-b486-d75fde32e385,
abstract = {{<p>We examined morphological and genetic differences among Fennoscandian deer ked (Lipoptena cervi L, Hippoboscidae) populations with varying expansion history: the eastern population (Finland) has expanded rapidly, whereas the western population is divided into an old and relatively stationary sub-population in Sweden and a newly established and more expansive sub-population in Norway. The genetic analysis suggests that the distinct populations represent a single species. Individuals from expansive populations were characterized by a large body size, relatively large and robust thorax shape, and wing shape with an exaggerated basal posterior margin. Yet, there was no among population variation in relative wing size or its elongated shape after variation in overall size was controlled for. Although certain size and shape variables showed thermal sensitivity, the degree of plasticity did not differ between the populations. In general, we observed that shape is more sensitive to external thermal conditions at the pupal stage than size per se, with the thermal sensitivity of the latter depending on the trait under examination. We conclude that the possible adaptive value of morphological differences relies on variation in survival during the off-host life stages or short-distance flight to reach a susceptible host instead of long-distance dispersal ability.</p>}},
author = {{Jaakola, Mervi and Ojanen, Meri and Hurme, Eija and Mutanen, Marko and Wahlberg, Niklas and Välimäki, Panu and Kaitala, Arja}},
issn = {{0024-4066}},
keywords = {{Development temperature; Geometric morphometrics; Invasive species; Phenotypic plasticity; Pupal phase; Pupiparous; Range expansion; Temperature-size rule; Viviparous}},
language = {{eng}},
month = {{10}},
number = {{2}},
pages = {{432--448}},
publisher = {{Oxford University Press}},
series = {{Biological Journal of the Linnean Society}},
title = {{Morphological variation between populations of the expanding ectoparasitic deer ked Lipoptena cervi (Diptera: Hippoboscidae) in Fennoscandia}},
url = {{http://dx.doi.org/10.1111/bij.12587}},
doi = {{10.1111/bij.12587}},
volume = {{116}},
year = {{2015}},
}