Genetic evidence for multiple parentage in eastern kingbirds (Tyrannus tyrannus)
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چکیده
منابع مشابه
A molecular genetic investigation of the population structure of Atlantic menhaden (Brevoortia tyrannus)
Atlantic menhaden (Brevoortia tyrannus) is an ecologically and economically important species along the U.S. East Coast. As a filter-feeder and key prey fish, it provides a critical link between primary production and larger piscivorous predators, such as striped bass (Morone saxatilis), bluefish (Pomatomus saltatrix), and weakfish (Cynoscion regalis). The commercial fishery for Atlantic menhad...
متن کاملPeriodicity of increment formation in otoliths of overwintering postlarval and prejuvenile Atlantic menhaden, Brevoortia tyrannus
Hypotheses of fi shery recruitment pro cesses often have as their foundation studies of incremental otolith growth (e.g. Methot, 1983; Rice et al., 1987). Conclusions from these studies, however, are only as robust as their baseline otolith validation work. This is especially true for investigations on Atlantic menhaden (Brevoortia tyrannus), an estuarine-dependent, marine-migratory clupeid ran...
متن کاملTestosterone secretion in a socially monogamous but sexually promiscuous migratory passerine.
The steroid hormone testosterone (T) influences a multitude of traits critical to reproduction in vertebrates. In birds, high male T supports territory establishment and mate attraction, but is thought to interfere with parental care. Interspecific comparisons indicate that migratory species with short, synchronous breeding seasons have the highest peak T, and that the seasonal profile of T exh...
متن کاملHigh Frequency of Extra-Pair Paternity in Eastern Kingbirds
Genetic parentage in the socially monogamous and territorial Eastern Kingbird (Tyrannus tyrannus) was examined in a central New York population by multilocus DNA fingerprinting. Extra-pair young were identified in 60% (12 of 20) of nests. Of the 64 nestlings profiled, 42% were sired by extra-pair males, but no cases of conspecific brood parasitism were detected. These results are markedly diffe...
متن کاملPhysical and nutritional properties of baby food containing menhaden oil (Brevoortia tyrannus) and microencapsulated menhaden oil
Purified menhaden oil (PMO) was characterized and microencapsulated. Baby foods containing PMO and microencapsulated purified menhaden oil (MPMO) were evaluated and compared. PMO had higher total omega-3, total saturated, total monounsaturated, DHA, and EPA contents than MPMO. Emulsion containing PMO (EPMO) exhibited viscoelastic characteristic and droplet size of EPMO was around 2e10 mm. The D...
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ژورنال
عنوان ژورنال: Behavioral Ecology and Sociobiology
سال: 1990
ISSN: 0340-5443,1432-0762
DOI: 10.1007/bf00172081