Saveer, Ahmem and Becher, Paul G and Birgersson, Göran and Hansson, Bill and Witzgall, Peter and Bengtsson, Marie
(2014).
Mate recognition and reproductive isolation in the sibling species Spodoptera littoralis and Spodoptera litura.
Frontiers in ecology and evolution. 2
, 1-7
[Journal article]
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Available under License Creative Commons Attribution. 862kB |
Official URL: http://dx.doi.org/10.3389/fevo.2014.00018
Abstract
Mate recognition is crucial for reproductive isolation and for maintaining species integrity. Chemosensory-mediated sexual communication with pheromones is an essential component of mate recognition in moths. Confronted with sex pheromone stimuli released from conspecific and closely related heterospecific females, which partially overlap in chemical composition, male moths are under strong selection to recognize compatible mates. Here, we investigated the role of pheromone signals in premating communication in the sibling species Spodoptera littoralis and S. litura (Lepidoptera, Noctuidae). Further, we measured the reproductive consequence of conspecific vs. heterospecific matings. Both species use Z9,E11–14:Ac as the major pheromone compound, and the 11-component blend found in pheromone glands of S. littoralis comprises the compounds found in S. litura. Accordingly, S. littoralis and S. litura males readily responded to conspecific and heterospecific calling females in no-choice behavioral tests. In contrast, in a dual-choice test, S. littoralis males choose conspecific calling females, whereas S. litura males did not discriminate between conspecific and heterospecific females. In S. littoralis females, heterospecific matings had a negative fitness effect as compared to conspecific matings. Female longevity, egg-laying and hatching of larvae were significantly reduced by matings with heterospecific males. Reciprocal crossings, between S. litura females and S. littoralis males, were prevented by genital morphology, which is consistent with reduced heterospecific attraction of S. littoralis males in a dual-choice assay. On the other hand, matings between S. littoralis females and S. litura males, under a no-choice situation, show that interspecific matings occur in zones of geographical overlap and corroborate the idea that mate quality, in these closely related species, is a continuous and not a categorical trait.
Authors/Creators: | Saveer, Ahmem and Becher, Paul G and Birgersson, Göran and Hansson, Bill and Witzgall, Peter and Bengtsson, Marie |
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Title: | Mate recognition and reproductive isolation in the sibling species Spodoptera littoralis and Spodoptera litura |
Series/Journal: | Frontiers in ecology and evolution (2296-701X) |
Year of publishing : | 2014 |
Volume: | 2 |
Page range: | 1-7 |
Number of Pages: | 7 |
Publisher: | Frontiers |
ISSN: | 2296-701X |
Language: | English |
Publication Type: | Journal article |
Refereed: | Yes |
Article category: | Scientific peer reviewed |
Version: | Published version |
Copyright: | Creative Commons: Attribution 3.0 |
Full Text Status: | Public |
Agris subject categories.: | L Animal production > L20 Animal ecology |
Subjects: | (A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Zoology (A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Ecology (A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Behavioural Sciences Biology |
Agrovoc terms: | hybridization, gene flow, pheromones, spodoptera |
Keywords: | mate recognition, reproductive isolation, reproductive fitness, hybridization, gene flow, pheromone, spodoptera |
URN:NBN: | urn:nbn:se:slu:epsilon-e-2511 |
Permanent URL: | http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-e-2511 |
ID Code: | 12022 |
Faculty: | LTV - Fakulteten för landskapsarkitektur, trädgårds- och växtproduktionsvetenskap |
Department: | (LTJ, LTV) > Department of Plant Protection Biology |
Deposited By: | SLUpub Connector |
Deposited On: | 26 Mar 2015 08:49 |
Metadata Last Modified: | 09 Sep 2020 14:17 |
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