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Molecular phylogeny of the livebearing Goodeidae (Cyprinodontiformes).
- S. A. Webb, J. Graves, C. Macías-García, A. Magurran, D. Foighil, M. Ritchie
- Biology, MedicineMolecular phylogenetics and evolution
- 1 March 2004
The sequenced part of the mitochondrial cytochrome c oxidase subunit I (COI) gene and control region of representatives of 36 species (all genera) of goodeid fishes in order to establish phylogenetic relationships among the taxa support the monophyly of the Goodeidae, the sister-group relationship of the Empetrichthyinae and Goodeinae, and the relationship of Profundulus to the GoodEidae.
Population genetic differentiation of sea lice (Lepeophtheirus salmonis) parasitic on Atlantic and Pacific salmonids: analyses of microsatellite DNA variation among wild and farmed hosts
There is no evidence of isolation of populations on farmed hosts from those on wild fish, consistent with long-distance oceanic migration of wild hosts and larval interchange between farmed and wild host stocks being sufficient to prevent genetic divergence of L. salmonis throughout the North Atlantic.
The usefulness of pellets for assessing the diet of adult Shags Phalacrocorax aristotelis
The proportion of recovered otoliths varied greatly both from day to day and according to the species of fish, so fundamental questions need to be answered before pellets can be used in general dietary studies of seabirds.
Yolk antioxidants and mate attractiveness in the Zebra Finch
It is demonstrated that female Zebra Finches mated to attractive males deposit more carotenoids and alpha-tocopherol (vitamin E) in later-laid eggs, shown by a significant interaction between laying order and antioxidant concentration.
Mate attractiveness and primary resource allocation in the zebra finch
In both rounds of breeding there was no difference in egg mass or yolk androgen concentration between male or female eggs in either treatment, which suggests that females do not differentially invest in male and female offspring in relation to the attractiveness of their mate in this species.
Diet quality and resource allocation in the zebra finch
- A. Rutstein, P. Slater, J. Graves
- Biology, MedicineProceedings of the Royal Society of London…
- 7 August 2004
Differences in the primary sex ratio are in line with predictions from sex allocation theory, since in this species females are more vulnerable to nutritional stress than males.
Finding fathers: spatio‐temporal analysis of paternity assignment in grey seals (Halichoerus grypus)
The authors found little evidence of unidentified male strategies at North Rona, Scotland, whereas further examination of mechanisms of female choice may be productive, and nearly all paternities assigned agreed with expectation based upon detailed knowledge of the spatio‐temporal patterns of individuals during the breeding season.
Familiarity breeds contempt in guppies
It is shown here that wild guppies, Poecilia reticulata, do both the cognitive skills to recognize familiar females, or behaviour patterns that increase his likelihood of encountering new ones.
Seasonal patterns of singing in the willow warbler: evidence against the fertility announcement hypothesis
A survey of recent studies suggests that, in most passerine species studied, males do not sing during the fertile period of their females, and breeding asynchronies within populations would be responsible for the apparent matching between the peaks of singing activity and fertility.
Microsatellite and mtDNA analysis of the population structure of grey seals (Halichoerus grypus) from three breeding areas in the Baltic Sea
- J. Graves, A. Helyar, M. Biuw, Mart Jüssi, Ivar Jüssi, O. Karlsson
- BiologyConservation Genetics
- 1 February 2009
This genetic substructure of the Baltic grey seal populations should be taken into consideration when managing the seal population to prevent the hunting regime from having an adverse effect on genetic diversity by setting hunting quotas separately for the different subpopulations.