The ecological differentiation of asexual lineages of cotton aphids: alate behaviour, sensory physiology, and differential host associations

Najar-Rodriguez, AJ, McGraw, EA, Hull, CD, Mensah, RK and Walter, GH (2009) The ecological differentiation of asexual lineages of cotton aphids: alate behaviour, sensory physiology, and differential host associations. BIOLOGICAL JOURNAL OF THE LINNEAN SOCIETY, 97 3: 503-519. doi:10.1111/j.1095-8312.2009.01235.x


Author Najar-Rodriguez, AJ
McGraw, EA
Hull, CD
Mensah, RK
Walter, GH
Title The ecological differentiation of asexual lineages of cotton aphids: alate behaviour, sensory physiology, and differential host associations
Journal name BIOLOGICAL JOURNAL OF THE LINNEAN SOCIETY   Check publisher's open access policy
ISSN 0024-4066
Publication date 2009-07
Year available 2009
Sub-type Article (original research)
DOI 10.1111/j.1095-8312.2009.01235.x
Volume 97
Issue 3
Start page 503
End page 519
Total pages 17
Editor Allen, J.A.
Place of publication United Kingdom
Publisher Wiley-Blackwell Publishing Japan
Collection year 2010
Language eng
Subject 060808 Invertebrate Biology
820301 Cotton
C1
Formatted abstract
The cotton aphid (Aphis gossypii Glover) is a cosmopolitan pest species consisting of various host plant-associated
lineages that appear to have different patterns of insecticide resistance, electrophoretic banding, and reproductive
output across alternative host species. Debate continues as to whether these differences represent intraspecific
variation or indicate a complex of cryptic or sibling species. We studied the host plant-related ecology of two asexual
lineages of A. gossypii associated with the families Malvaceae and Cucurbitaceae, respectively, in particular the
host plant finding and acceptance processes of the alate forms. The two lineages proved to be differentiated across
host plants in terms of: (1) their landing and settling behaviour, nymphal production rate, and subsequent colony
establishment (i.e. nymphal survival and development) and (2) their sensory abilities in relation to host plantderived
odours. Furthermore, genetic structuring according to host plant type was detected using the gene for
elongation factor 1-a. The magnitude of the genetic differentiation across lineages was low, perhaps indicating a
relatively recent divergence. The results demonstrate: (1) the presence of (at least) two cryptic species within the
current definition of A. gossypii, as anticipated in previous studies, and (2) the practicalities of using a
multidisciplinary approach to understanding the ‘limits’ of asexual species. If sexuals can be generated from each
of these lineages, this conclusion will be open to further testing.
Keyword olfaction
BLACK BEAN APHID
Q-Index Code C1
Q-Index Status Confirmed Code

Document type: Journal Article
Sub-type: Article (original research)
Collections: 2010 Higher Education Research Data Collection
School of Biological Sciences Publications
Ecology Centre Publications
 
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Created: Thu, 03 Sep 2009, 07:56:23 EST by Mr Andrew Martlew on behalf of School of Biological Sciences