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X Demographics
Mendeley readers
Attention Score in Context
| Title |
One-sided ejaculation of echidna sperm bundles.
|
|---|---|
| Published in |
The American Naturalist, December 2007
|
| DOI | 10.1086/522847 |
| Pubmed ID | |
| Authors |
S D Johnston, B Smith, M Pyne, D Stenzel, W V Holt |
| Abstract |
We report for the first time an unusual ejaculatory mechanism in the short-beaked echidna in which each side of the bilaterally symmetrical, rosettelike glans penis is used alternately, with the other being shut down. This is unparalleled in mammals but is reminiscent of the use of hemipenes in squamate reptiles, providing further reproductive evidence of a sauropsidian lineage in the Monotremata. Further, we describe the occurrence of motile sperm bundles in ejaculated echidna semen and provide scanning electron micrographs of their morphology. Sperm bundling appears to confer increased sperm motility, which may provide the potential for sperm competition between males. |
X Demographics
The data shown below were collected from the profiles of 20 X users who shared this research output. Click here to find out more about how the information was compiled.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Japan | 2 | 10% |
| United Kingdom | 1 | 5% |
| Australia | 1 | 5% |
| France | 1 | 5% |
| United States | 1 | 5% |
| Unknown | 14 | 70% |
Demographic breakdown
| Type | Count | As % |
|---|---|---|
| Members of the public | 16 | 80% |
| Scientists | 4 | 20% |
Mendeley readers
The data shown below were compiled from readership statistics for 54 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| India | 1 | 2% |
| United States | 1 | 2% |
| Argentina | 1 | 2% |
| Unknown | 51 | 94% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Researcher | 11 | 20% |
| Student > Ph. D. Student | 10 | 19% |
| Student > Master | 6 | 11% |
| Student > Bachelor | 4 | 7% |
| Other | 3 | 6% |
| Other | 7 | 13% |
| Unknown | 13 | 24% |
| Readers by discipline | Count | As % |
|---|---|---|
| Agricultural and Biological Sciences | 29 | 54% |
| Biochemistry, Genetics and Molecular Biology | 3 | 6% |
| Veterinary Science and Veterinary Medicine | 2 | 4% |
| Environmental Science | 2 | 4% |
| Engineering | 2 | 4% |
| Other | 2 | 4% |
| Unknown | 14 | 26% |
Attention Score in Context
This research output has an Altmetric Attention Score of 179. 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 03 February 2024.
All research outputs
#222,548
of 25,299,129 outputs
Outputs from The American Naturalist
#31
of 3,989 outputs
Outputs of similar age
#501
of 168,594 outputs
Outputs of similar age from The American Naturalist
#1
of 18 outputs
Altmetric has tracked 25,299,129 research outputs across all sources so far. Compared to these this one has done particularly well and is in the 99th percentile: it's in the top 5% of all research outputs ever tracked by Altmetric.
So far Altmetric has tracked 3,989 research outputs from this source. They typically receive a lot more attention than average, with a mean Attention Score of 12.0. This one has done particularly well, scoring higher than 99% of its peers.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 168,594 tracked outputs that were published within six weeks on either side of this one in any source. This one has done particularly well, scoring higher than 99% of its contemporaries.
We're also able to compare this research output to 18 others from the same source and published within six weeks on either side of this one. This one has done particularly well, scoring higher than 99% of its contemporaries.