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 of ... awarded the 44 million US Dollar project, for the ... Plates including Personalization, Enrolment, and IT Infrastructure , ... the production and implementation of Identity Management Solutions. Numerous renowned ... Decatur was selected for the most ...
(Date:6/1/2016)... NEW YORK , June 1, 2016 ... Biometric Technology in Election Administration and Criminal Identification to ... According to a recently released TechSci Research report, " ... Sector, By Region, Competition Forecast and Opportunities, 2011 - ... $ 24.8 billion by 2021, on account of growing ...
(Date:5/16/2016)... NEW YORK , May 16, 2016   ... authentication solutions, today announced the opening of an IoT ... to strengthen and expand the development of embedded ... provides an unprecedented level of convenience and security with ... to authenticate one,s identity aside from DNA. EyeLock,s platform ...
Breaking Biology News(10 mins):
(Date:6/24/2016)... ... June 24, 2016 , ... While the majority of commercial spectrophotometers and ... and the 6000i models are higher end machines that use the more unconventional z-dimension ... light beam from the bottom of the cuvette holder. , FireflySci has developed ...
(Date:6/23/2016)... , ... June 23, 2016 , ... ... release of its second eBook, “Clinical Trials Patient Recruitment and Retention Tips.” Partnering ... retention in this eBook by providing practical tips, tools, and strategies for clinical ...
(Date:6/23/2016)... 23, 2016   Boston Biomedical , an ... designed to target cancer stemness pathways, announced that ... Orphan Drug Designation from the U.S. Food and ... cancer, including gastroesophageal junction (GEJ) cancer. Napabucasin is ... inhibit cancer stemness pathways by targeting STAT3, and ...
(Date:6/23/2016)... -- A person commits a crime, and the detective uses ... criminal down. An outbreak of foodborne illness makes ... uses DNA evidence to track down the bacteria that caused ... not. The FDA has increasingly used a complex, cutting-edge technology ... Put as simply as possible, whole genome sequencing is a ...
Breaking Biology Technology: