| Title |
Left-handed sperm removal by male Calopteryx damselflies (Odonata)
|
|---|---|
| Published in |
SpringerPlus, March 2014
|
| DOI | 10.1186/2193-1801-3-144 |
| Pubmed ID | |
| Authors |
Kaori Tsuchiya, Fumio Hayashi |
| Abstract |
Male genitalia in several insect species are asymmetry in right and left shape. However, the function of such asymmetric male genitalia is still unclear. We found that the male genitalia of the damselfly Calopteryx cornelia (Odonata: Calopterygidae) are morphologically symmetric just after emergence but asymmetric after reproductive maturation. Males remove rival sperm stored in the female bursa copulatrix (single spherical sac) and the following spermatheca (Y-shaped tubular sac) prior to their own ejaculation to prevent sperm competition. Males possess the aedeagus with a recurved head to remove bursal sperm and a pair of spiny lateral processes to remove spermathecal sperm. The right lateral process is less developed than the left, and sperm stored in the right spermathecal tube are rarely removed. Experiments involving surgical cutting of each lateral process demonstrated that only the left process functions in spermathecal sperm removal. Thus, males of C. cornelia are left-handed in their sperm removal behaviour at copulation. |
X Demographics
The data shown below were collected from the profiles of 2 X users who shared this research output. Click here to find out more about how the information was compiled.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Unknown | 2 | 100% |
Demographic breakdown
| Type | Count | As % |
|---|---|---|
| Members of the public | 2 | 100% |
Mendeley readers
The data shown below were compiled from readership statistics for 19 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Spain | 2 | 11% |
| India | 1 | 5% |
| France | 1 | 5% |
| Unknown | 15 | 79% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Student > Ph. D. Student | 5 | 26% |
| Professor | 3 | 16% |
| Student > Doctoral Student | 2 | 11% |
| Student > Master | 2 | 11% |
| Professor > Associate Professor | 2 | 11% |
| Other | 4 | 21% |
| Unknown | 1 | 5% |
| Readers by discipline | Count | As % |
|---|---|---|
| Agricultural and Biological Sciences | 13 | 68% |
| Biochemistry, Genetics and Molecular Biology | 3 | 16% |
| Environmental Science | 1 | 5% |
| Medicine and Dentistry | 1 | 5% |
| Unknown | 1 | 5% |
Attention Score in Context
This research output has an Altmetric Attention Score of 1. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 22 March 2014.
All research outputs
#15,296,915
of 22,749,166 outputs
Outputs from SpringerPlus
#932
of 1,853 outputs
Outputs of similar age
#144,326
of 243,429 outputs
Outputs of similar age from SpringerPlus
#37
of 61 outputs
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