Document Detail

Rapid swimming and escape movements in the aquatic larvae and pupae of the phantom midge Chaoborus (Diptera, Chaoboridae).
MedLine Citation:
PMID:  24737769     Owner:  NLM     Status:  Publisher    
Rapid locomotion in the aquatic larvae and pupae of the phantom midge Chaoborus was analysed. A 10 mm long larva moved sporadically by rapidly curling into a tight circle and then unfurling. The most common movement (70% of all movements) was a body rotation of 332 ± 22 degrees that lasted 63 ± 19 ms and reached a peak velocity of 0.07 ± 0.02 m s(-1). If the head unfurled earlier in the cycle, the rotation was smaller and the larva dived downwards. A distinct category of single rotations of about 180 degrees (8%) resulted in a larva finishing with its head pointing in the opposite direction. A sequence of rotational movements (22%) resulted in more extensive displacements. The area of the tail fan was reduced by folding during part of a cycle. It was made of a row of 26 radiating filaments with interlacing hairs between adjacent filaments and resilin at their ventral midline articulations with the body. The fan sprang back passively to its splayed position after being forcibly folded. Reducing the area of the fan by 80% decreased angular rotation and impaired stability so that 33% of movements ended with the body upside down. A 6 mm long pupa also moved by curling and unfurling motions of the head and tail that lasted 215 ± 19 ms and generated slower velocities of 0.03 ± 0.01 m s(-1). The pupal tail fan was membranous, oriented differently, had resilin at its articulations and its area could be changed.
Malcolm Burrows; Marina Dorosenko
Related Documents :
2016919 - Photoplethysmography. part 1. comparison with laser doppler flowmetry.
9021649 - Autonomic nervous system response patterns specificity to basic emotions.
24037199 - Development of the bg-malaria trap as an alternative to human-landing catches for the c...
16382679 - Epilation today: physiology of the hair follicle and clinical photo-epilation.
21974439 - Comparative electromagnetic articulographic study of english rhythm as produced by nati...
25294499 - Illusory movements induced by tendon vibration in right- and left-handed people.
15184519 - Interspecific and intraspecific views of color signals in the strawberry poison frog de...
1359949 - Periodicity and diversity in ant mating flights.
11888539 - Lateral interactions: size does matter.
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2014-4-15
Journal Detail:
Title:  The Journal of experimental biology     Volume:  -     ISSN:  1477-9145     ISO Abbreviation:  J. Exp. Biol.     Publication Date:  2014 Apr 
Date Detail:
Created Date:  2014-4-16     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0243705     Medline TA:  J Exp Biol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

Previous Document:  Null point of discrimination in crustacean polarisation vision.
Next Document:  Is there metabolic cold adaptation in terrestrial ectotherms? Exploring a latitudinal compensation u...