Social Behavior and Operational Sex Ratios in the Viviparous Fish Girardinichthys multiradiatus

Copeia ◽  
1994 ◽  
Vol 1994 (4) ◽  
pp. 919 ◽  
Author(s):  
Constantino Macías Garcia ◽  
Constantino Macias Garcia
Keyword(s):  
Social Behavior ◽  
Sex Ratios ◽  
Viviparous Fish ◽  
Operational Sex Ratios

scholarly journals The Perception of Operational Sex Ratios by Voice

2017 ◽  
Vol 7 (1) ◽  
Author(s):  
John G. Neuhoff
Keyword(s):  
Sex Ratios ◽  
Operational Sex Ratios

Operational sex ratios and behavioural sex differences in a pipefish population

1994 ◽  
Vol 34 (6) ◽  
pp. 142-435 ◽  
Author(s):  
Amanda Vincent ◽  
Ingrid Ahnesj� ◽  
Anders Berglund
Keyword(s):  
Sex Differences ◽  
Sex Ratios ◽  
Operational Sex Ratios ◽  
Behavioural Sex Differences

Divergence of responses to variable socio‐sexual environments in laboratory populations of Drosophila melanogaster evolving under altered operational sex ratios

Evolution ◽  
2020 ◽  
Author(s):  
Komal Maggu ◽  
Neetika Ahlawat ◽  
Manas Geeta Arun ◽  
Abhishek Meena ◽  
Nagaraj Guru Prasad
Keyword(s):  
Drosophila Melanogaster ◽  
Sex Ratios ◽  
Laboratory Populations ◽  
Operational Sex Ratios

Reconstructed paternal genotypes reveal variable rates of multiple paternity at three rookeries of loggerhead sea turtles (Caretta caretta) in Western Australia

2014 ◽  
Vol 62 (6) ◽  
pp. 454 ◽  
Author(s):  
J. N. Tedeschi ◽  
N. J. Mitchell ◽  
O. Berry ◽  
S. Whiting ◽  
M. Meekan ◽  
...  
Keyword(s):  
Population Size ◽  
Western Australia ◽  
Sea Turtles ◽  
Sex Ratios ◽  
Multiple Paternity ◽  
Caretta Caretta ◽  
Loggerhead Sea Turtles ◽  
Female Population ◽  
Species Specific ◽  
Operational Sex Ratios

Female sea turtles are promiscuous, with clutches of eggs often sired by multiple males and rates of multiple paternity varying greatly within and across species. We investigated levels of multiple paternity in loggerhead sea turtles (Caretta caretta) from three rookeries in Western Australia by analysing polymorphic species-specific genetic markers. We predicted that the level of multiple paternity would be related to female population size and hence the large rookery at Dirk Hartog Island would have higher rates of multiple paternity than two smaller mainland rookeries at Gnaraloo Bay and Bungelup Beach. Contrary to our prediction, we found highly variable rates of multiple paternity among the rookeries that we sampled, which was unrelated to female population size (25% at Bungelup Beach, 86% at Gnaraloo Bay, and 36% at Dirk Hartog Island). Approximately 45 different males sired 25 clutches and the average number of sires per clutch ranged from 1.2 to 2.1, depending on the rookery sampled. The variance in rates of multiple paternity among rookeries suggests that operational sex ratios are variable in Western Australia. Periodic monitoring would show whether the observed patterns of multiple paternity for these three rookeries are stable over time, and our data provide a baseline for detecting shifts in operational sex ratios.

Operational Sex Ratios and Sex Biased Mortality in Scaphiopus (Pelobatidae)

1984 ◽  
Vol 29 (2) ◽  
pp. 232 ◽  
Author(s):  
Bruce Woodward
Keyword(s):  
Sex Ratios ◽  
Operational Sex Ratios

Skewed embryonic sex ratios in a viviparous fish: a result of endocrine disruption?

2000 ◽  
Vol 50 (1-5) ◽  
pp. 191-192 ◽  
Author(s):  
D.G.J. Larsson ◽  
H. Hällman ◽  
L. Förlin
Keyword(s):  
Endocrine Disruption ◽  
Sex Ratios ◽  
Viviparous Fish

Operational sex ratios and mating competition

Sex Ratios ◽  
2002 ◽  
pp. 366-382 ◽  
Author(s):  
Charlotta Kvarnemo ◽  
Ingrid Ahnesjö
Keyword(s):  
Sex Ratios ◽  
Mating Competition ◽  
Operational Sex Ratios
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