Advanced

A genetic component to resistance to fungal infection in frog embryos

Sagvik, Jörgen; Uller, Tobias LU and Olsson, Mats (2008) In Proceedings of the Royal Society B: Biological Sciences 275(1641). p.1393-1396
Abstract
The embryo has traditionally been considered to completely rely upon parental strategies to prevent threats to survival posed by predators and pathogens, such as fungi. However, recent evidence suggests that embryos may have hitherto neglected abilities to counter pathogens. Using artificial fertilization, we show that among-family variation in the number of Saprolegnia-infected eggs and embryos in the moor frog, Rana arvalis, cannot be explained by maternal effects. However, analysed as a within-females effect, sire identity had an effect on the degree of infection. Furthermore, relatively more eggs and embryos were infected when eggs were fertilized by sperm from the same, compared with a different, population. These effects were... (More)
The embryo has traditionally been considered to completely rely upon parental strategies to prevent threats to survival posed by predators and pathogens, such as fungi. However, recent evidence suggests that embryos may have hitherto neglected abilities to counter pathogens. Using artificial fertilization, we show that among-family variation in the number of Saprolegnia-infected eggs and embryos in the moor frog, Rana arvalis, cannot be explained by maternal effects. However, analysed as a within-females effect, sire identity had an effect on the degree of infection. Furthermore, relatively more eggs and embryos were infected when eggs were fertilized by sperm from the same, compared with a different, population. These effects were independent of variation in fertilization success. Thus, there is likely to be a significant genetic component in embryonic resistance to fungal infection in frog embryos. Early developmental stages may show more diverse defences against pathogens than has previously been acknowledged (Less)
Please use this url to cite or link to this publication:
author
publishing date
type
Contribution to journal
publication status
published
subject
in
Proceedings of the Royal Society B: Biological Sciences
volume
275
issue
1641
pages
1393 - 1396
publisher
Royal Society
external identifiers
  • Scopus:43249117253
DOI
10.1098/rspb.2008.0078
language
English
LU publication?
no
id
bdc4975f-cab3-4734-a88c-2b32fa0e4da5 (old id 4731548)
date added to LUP
2014-11-11 11:48:43
date last changed
2016-10-13 04:42:23
@misc{bdc4975f-cab3-4734-a88c-2b32fa0e4da5,
  abstract     = {The embryo has traditionally been considered to completely rely upon parental strategies to prevent threats to survival posed by predators and pathogens, such as fungi. However, recent evidence suggests that embryos may have hitherto neglected abilities to counter pathogens. Using artificial fertilization, we show that among-family variation in the number of Saprolegnia-infected eggs and embryos in the moor frog, Rana arvalis, cannot be explained by maternal effects. However, analysed as a within-females effect, sire identity had an effect on the degree of infection. Furthermore, relatively more eggs and embryos were infected when eggs were fertilized by sperm from the same, compared with a different, population. These effects were independent of variation in fertilization success. Thus, there is likely to be a significant genetic component in embryonic resistance to fungal infection in frog embryos. Early developmental stages may show more diverse defences against pathogens than has previously been acknowledged},
  author       = {Sagvik, Jörgen and Uller, Tobias and Olsson, Mats},
  language     = {eng},
  number       = {1641},
  pages        = {1393--1396},
  publisher    = {ARRAY(0x8529a20)},
  series       = {Proceedings of the Royal Society B: Biological Sciences},
  title        = {A genetic component to resistance to fungal infection in frog embryos},
  url          = {http://dx.doi.org/10.1098/rspb.2008.0078},
  volume       = {275},
  year         = {2008},
}