Best Practices: Enriching Learning at School, A Dubai School Sets an Example  |  Career News: Huge Opportunities for Public Policy Professionals in Corporate Sector  |  International Edu News: USCIS Implements eProcessing for Citizenship and Immigration Services  |  International Edu News: Harvard, MIT, Stanford, Oxford Tops World University Rankings  |  Career News: ICSI to Setup More Study Centres In India  |  Career News: Chartered Accountants: ICAI Placement Programme Helps 3180 Candidates Get Jobs  |  Parent Interventions: Trust in Government Schools Lower in Rural and Urban Households: IIMA Survey  |  Higher Studies: Where to Get Authentic Information on Medicine Courses Offered Abroad?  |  Best Practices: IP Nani, The Tech-Savvy Grandma-Son Helps Govt Tackle IP Crimes  |  Technology Inceptions: IP Nani, The Tech-Savvy Grandma-Son Helps Govt Tackle IP Crimes  |  Best Practices: CISCE Encourages Schools to Create Awareness About IPRs  |  Teacher Insights: CISCE Encourages Schools to Create Awareness About IPRs  |  Education Information: HSCAP Kerala Plus One allotment list released   |  National Edu News: Scholarships for women to pursue master’s programs in engineering at IISC  |  National Edu News: Indo-U.S. Fellowship for Women in STEMM (WISTEMM)  |  
  • Pallikkutam Magazine
  • Companion Magazine
  • Mentor
  • Smart Board
  • Pallikkutam Publications

April 22, 2019 Monday 04:03:12 PM IST
Horseshoe crabs relatedto spiders

Blue-blooded and armoured with 10 spindly legs, horseshoe crabs were first thought to be closely related to crabs, lobsters and other crustaceans.  In 1881, evolutionary biologist E. Ray Lankester placed them solidly in a group more similar to spiders and scorpions. Horseshoe crabs have since been thought to be ancestors of the arachnids, but molecular sequence data have always been sparse enough to cast doubt. 

University of Wisconsin-Madison evolutionary biologists, in their recent study(by analyzing troves of genetic data) published in the journal Systematic Biology, helps firmly plant ancient horseshoe crabs within the arachnid family tree. Horseshoe crabs possess a mix of physical characteristics observed among a variety of arthropods. The animals' genome has repeatedly shown them to be related to arachnids such as spiders and scorpions. They are hard-shelled like crabs but are the only marine animals known to breathe with book gills, which resemble the book lungs spiders and scorpions use to survive on land.


Comments