Evidence from cytochrome B sequences and allozymes for a 'new' species of alcid: the long-billed murrelet (Brachyramphus perdix)

Article Abstract:

Analyses of cytochrome b sequences and allozymes reveals that two subspecies of marbled murrelet, Brachyramphus marmoratus, are genetically different, and they clearly represent distinct species. The two subspecies, Long-billed (B. m. marmoratus) and North American (B. m. perdix) marbled murrelets are morphologically distinct and have been reproductively isolated for an extended period. The long-billed murrelet merits the full species status and needs to be managed independently.

Analysis, Physiological aspects, Cytochromes, Isoenzymes

---

Avian communities of mature balsam fir forests in Newfoundland: Age-dependence and implications for timber harvesting

Article Abstract:

There has been a decline in the amount of old growth balsam fir forest in Newfoundland, Canada. Three mature age-classes of forests were studied, based on tree density, canopy gaps, woody debris and moss and litter ground cover. Bird species richness was found to be greater in 40 year old forests, compared to 60 and 80 year old forests. The most abundant species in old forests were Black-backed Woodpecker and Gray-cheeked Thrush.

Forest management, Bird populations, Firs (Plant), Fir

---

Vocalizations of the Kittlitz's Murrelet

Article Abstract:

The rare Kittlitz's Murrelet of the North Pacific is vulnerable to oil pollution, gill-netting and trophic changes. It is a difficult species to monitor and manage due to its cryptic breeding plumage and breeding in remote alpine habitats. The vocalizations of the Kittlitz's Murrelet are virtually unknown. A more thorough description is provided based on audio recordings, and two types of calls have been discerned.

Sound production by animals, Animal vocalizations

Similar abstracts:

• Abstracts: Online tool for analysis of denaturing gradient gel electrophoresis profiles. Comparison of diversities of Escherichia coli O157 shed from a cohort of spring-born beef calves at pasture and in housing
• Abstracts: No evidence for local adaptation between cytoplasmic male sterility and nuclear restorer genes in the gynodioecious species Thymus vulgaris L
• Abstracts: Lysogenic bacteriophage M1 from Selenomonas ruminantium: isolation, characterization and DNA sequence analysis of the integration site
• Abstracts: Expression of the exoY gene, required for exopolysaccharide synthesis in Agrobacterium, is activated by the regulatory ros gene
• Abstracts: The invariant U5 snRNA loop 1 sequence is dispensable for the first catalytic step of pre-mRNA splicing in yeast

This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.