Navigation Links
Misleading morphology: 3 European parasitoid wasp 'species' are seasonal forms of just 1
Date:10/26/2011

Three widely differing forms of European Scambus parasitoid wasps that had previously been regarded as distinct species are shown to be seasonal morphs of a single species. The collaboration involved National Museums Scotland (Mark Shaw), a private individual (Malcolm Jennings) and Imperial College London + Natural History Museum (Donald Quicke). It was published in the open access Journal of Hymenoptera Research.

The findings depended on examination of museum collections with good data standards, targeted fieldwork to rear specimens from known hosts at different times of year, and experimental rearings of progeny from spring females through summer hosts. DNA sequence data provided confirmation that the rearing results were real, and not the result of overlooked contaminants.

The adults of these parasitoids paralyse their concealed hosts, which are small caterpillars or beetle larvae, before laying an egg beside the host. The host remains paralysed and is consumed by the resulting parasitoid larva, which then pupates and eventually becomes an adult, emerging from the same place. One morph (S. planatus: Fig.1), which occurs in spring, has a robust head to accommodate the powerful muscles needed to chew out of acorns in which it has been a parasitoid of micromoth and weevil larvae attacked the previous autumn. Females of this morph live for several weeks, during which they become darker and their abdomen broadens considerably (S. ventricosus). Towards the middle of summer, this morph matures its eggs and parasitises micromoth larvae living in relatively soft silken retreats among foliage. Within a few weeks, adults of the next generation emerge from this substrate, having much less powerful heads (S. calobatus: Fig. 2), and these adults then seek tenented acorns in which to oviposit in autumn. The spring-emerging and summer-emerging forms also differ in their ovipositor lengths. This life-cycle was confirmed experimentally by allowing the S. ventricosus morph, originating from acorns, to parasitise the summer hosts which then produced adults of the S. calobatus morph. Because S. calobatus is the oldest of the three names, this is the one that has to be used for this seasonally variable, but none-the-less single, species in the future.

"It was satisfying to be able to follow this hunch through to such a conclusive result" says the senior author Mark Shaw. "It shows the importance of good collections, careful field work, and focussed experimentation. Almost certainly there will be other similar cases."


'/>"/>
Contact: Mark Shaw
markshaw@xenarcha.com
44-013-166-70577
Pensoft Publishers
Source:Eurekalert  

Related biology news :

1. Genomatix to partner in $41 million European epigenomics consortium
2. Pesticides pollute European waterbodies more than previously thought
3. Some like it hot -- European fish stocks changing with warming seas
4. European Congress on Osteoporosis & Osteoarthritis opens online registration
5. Getting 50-year-old Americans as healthy as Europeans could save Medicare and Medicaid $632 billion by 2050
6. European Bioinformatics Institute to lead UK PubMed Central in 2011-2016
7. For the first time, the European IVF Monitoring Group reports on cycles using frozen eggs
8. Atlas of European Millipedes published by Pensoft
9. European Multidisciplinary Cancer Congress 2011
10. Pan-European research project for clean air
11. EUREKA, the largest European network for industrial R&D and innovation, launches E!NNOVEST
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Misleading morphology: 3 European parasitoid wasp 'species' are seasonal forms of just 1
(Date:6/2/2016)... , June 2, 2016 The Department ... has awarded the 44 million US Dollar project, for the ... Vehicle Plates including Personalization, Enrolment, and IT Infrastructure , ... in the production and implementation of Identity Management Solutions. Numerous ... however Decatur was selected for the ...
(Date:5/20/2016)... MINNEAPOLIS , May 20, 2016  VoiceIt ... technology partnership with VoicePass. By working ... user experience.  Because VoiceIt and VoicePass take slightly ... two engines increases both security and usability. ... expressed excitement about this new partnership. ...
(Date:4/28/2016)... SAN FRANCISCO and BANGALORE, India ... part of EdgeVerve Systems, a product subsidiary of Infosys (NYSE: ... service provider, today announced a global partnership that ... convenient way to use mobile banking and payment services. ... Mobility is a key innovation area for financial services, but ...
Breaking Biology News(10 mins):
(Date:6/24/2016)... ... ... Researchers at the Universita Politecnica delle Marche in Ancona combed medical journal articles ... findings are the subject of a new article on the Surviving Mesothelioma website. ... blood, lung fluid or tissue of mesothelioma patients that can help point doctors to ...
(Date:6/23/2016)... , June 23, 2016   Boston Biomedical ... novel compounds designed to target cancer stemness pathways, ... been granted Orphan Drug Designation from the U.S. ... of gastric cancer, including gastroesophageal junction (GEJ) cancer. ... designed to inhibit cancer stemness pathways by targeting ...
(Date:6/23/2016)... , June 23, 2016 Houston Methodist ... the Cy-Fair Sports Association to serve as their ... agreement, Houston Methodist Willowbrook will provide sponsorship support, ... connectivity with association coaches, volunteers, athletes and families. ... the Cy-Fair Sports Association and to bring Houston ...
(Date:6/23/2016)... NEW YORK , June, 23, 2016  The ... students to envision new ways to harness living systems ... of Modern Art (MoMA) in New York ... more than 130 participating students, showcased projects at MoMA,s ... included Paola Antonelli , MoMA,s senior curator of ...
Breaking Biology Technology: