Sperm competition in frogs: testis size and a ‘sterile male’ experiment on Chiromantis xerampelina (Rhacophoridae)

@article{Jennions1993SpermCI,
  title={Sperm competition in frogs: testis size and a ‘sterile male’ experiment on Chiromantis xerampelina (Rhacophoridae)},
  author={M. Jennions and N. Passmore},
  journal={Biological Journal of The Linnean Society},
  year={1993},
  volume={50},
  pages={211-220}
}
Abstract The allometric relationship between body mass and testis mass was calculated using data from 16 genera (37 species) of African and Japanese frogs. Having controlled for body mass, the relative testis mass of Chiromantis xerampelina, Rhacophorus arboreus and R. schlegelli was considerably heavier than predicted (3.8-14.6 times more). All three species have multi-male breeding. Although the result is consistent with sperm competition having selected for increased sperm production in… Expand
Variation in fertilisation abilities between hemiclonal hybrid and sexual parental males of sympatric water frogs (Rana lessonae, R. esculenta, R. ridibunda)
TLDR
In natural LL/LR populations, the significantly smaller amount, poorer competitive ability and lower long-term survival of R. esculenta compared to R. lessonae sperm will reduce the initial reproductive superiority of hybrids and contribute to the stabilisation of mixed water-frog populations. Expand
Estimates of extreme sperm production: morphological and experimental evidence from reproductively promiscuous fairy-wrens (Malurus)
TLDR
Intra- and interspecific variation in the rates of sperm production is most likely linked to differences in the operational sex ratios of social groups and the opportunity for extragroup parentage. Expand
Co‐evolution of male and female reproductive characters across the Scathophagidae (Diptera)
TLDR
Sperm length was positively associated with the length of the spermathecal (sperm store) ducts, indicating correlated evolution between the two, but no associations between sperm length or length variation and testis size were found which suggests greater sperm competition sensu stricto does not select for longer sperm. Expand
Extra-pair paternity, sperm competition and the evolution of testis size in birds
TLDR
It is demonstrated that testis mass is related positively to the level of extra-pair paternity, after controlling for body size and phylogeny, and it is argued that selection has favoured increased testismass in situations of more intense sperm competition in order to retaliate against copulations by rival males. Expand
Sperm competition selects for increased testes mass in Australian frogs
TLDR
This work demonstrated that within the Myobatrachidae, the risk of sperm competition explained a significant amount of variation in testes mass, and provided an important test of sperm Competition theory for externally fertilizing taxa. Expand
Sperm competition and male mating tactics in the bitterling fishes
TLDR
It was shown that males were highly sensitive to sperm competition, ejaculating at a higher frequency and subsequently becoming more sperm depleted where sperm competition was high, and the timing of ejaculates was found to be crucial, with a peak in sperm concentration within the mussel mantle cavity 30 seconds after ejaculation. Expand
The effects of sperm competition on testes size and intromittent organ morphology in waterfowl
TLDR
These results are consistent with the hypothesis that waterfowl 10s are involved in sperm competition and further research into the actual mechanism by which the 10 is involved with sperm competition would be worthwile. Expand
Sperm length variations in five species of cypridoidean non-marine ostracods (Crustacea)
TLDR
The differing amounts of variation in sperm characters revealed in this study suggest that multiple evolutionary trends and pressures shape sperm lengths in this superfamily of ostracod superfamily Cypridoidea. Expand
Evolution of sperm morphology in anurans: insights into the roles of mating system and spawning location
TLDR
It is suggested that sexual selection in Chinese anurans favors longer sperm when the level of sperm competition is high, and a positive correlation between sperm morphology and relative testes size after taking phylogeny into account is found. Expand
Reproduction and spawning behavior in the frog, Engystomops pustulatus (Shreve 1941)
The study of reproductive strategies is central to understand the demography of populations and the energetic relationships of the species with their ecosystem. Documenting the reproductive naturalExpand
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 23 REFERENCES
Breeding behaviour of the African frog, Chiromantis xerampelina: multiple spawning and polyandry
TLDR
Breeding was observed in the foam-nest frog, Chiromantis xerampelina, in Hoedspruit, South Africa, with a male-biased operational sex ratio and asynchronous and unpredictable female arrival and it is suggested that multiple spawning was occurring. Expand
Testis weight, body weight and breeding system in primates
TLDR
The hypothesis that selection will favour the male that can deposit the largest number of sperm means that the volume of spermatogenic tissue and hence testis size is far greater in the chimpanzee than in the gorilla or orangutan, and the results support the hypothesis. Expand
12 - Sperm Competition in Amphibians
TLDR
Among urodeles, the necessary conditions for sperm competition, internal fertilization, multiple mating by females and sperm storage are widespread, and several recent studies provide evidence that it has been very important in the evolution of urodele sexual behavior. Expand
Sperm Competition, Sperm Depletion, Paternal Care, and Relative Testis Size in Birds
TLDR
Variation in relative testis mass was positively related to variation in copulation frequency per female, and the variation was significant; the sperm competition hypothesis was supported by data and the sperm depletion hypothesis could not account for variation in testis size. Expand
Disruptive selection for alternative life histories in salmon
TLDR
Age of maturity in salmon has probably not evolved as a single optimum, but rather as a ‘mixed evolutionarily stable strategy13,14 in which precocious maturity is an evolutionarily viable alternative life history strategy. Expand
The sexual strategies of natural populations of newts and salamanders
TLDR
This review attempts to integrate knowledge of urodele sexual strategies based on field and laboratory studies of population dynamics, competition between males for females, mate choice, parental care, and physiological constraints on reproduction. Expand
Testes size, ejaculate quality and sperm competition in birds
TLDR
The relationship between testes size, ejaculate quality, and sperm competition in birds was analysed using data collected in artificial insemination studies to hypothesized that ejaculatequality should be superior in species with intense sperm competition compared with other species. Expand
Spawning behaviour and male mating tactics of a foam-nesting treefrog, Rhacophorus schlegelii
TLDR
Spawning behaviour and male mating tactics of a foam-nesting treefrog, Rhacophorus schlegelii, were observed in the field and laboratory and revealed that males adopted both calling and sneaking tactics and switched between them frequently. Expand
SPERM COMPETITION AND ITS EVOLUTIONARY CONSEQUENCES IN THE INSECTS
The possible advantages to a species of internal rather than external fertilization have frequently been stressed, though one important point appears persistently to have escaped comment. In terms ofExpand
Breeding Behavior of the Leaf-frogs Phyllomedusa callidryas and Phyllomedusa dacnicolor in Mexico
TLDR
The males of P. callidryas and P. dacnicolor are aggressive toward other males of their own kind during the breeding season and aid in oviposition by pulling eggs and jelly from the female's vent. Expand
...
1
2
3
...