Sentences with phrase «colonies increased in size»

By contrast, the three control colonies increased in size an average of 47 percent.

«Peer reviewed studies have shown that over time, cat colonies increase in size, the result of the inability to neuter or spay all the cats and the dumping of unwanted cats at the colony sites by callous pet owners.

Not exact matches

As the colony size increased, the leaf ants showed a marked increase in the regions of the brain concerned with learning and memory, the scientists report today in the Proceedings of the Royal Society B.

Findings: Community cat colonies who go through TNR decrease in size, while colonies that are not spayed or neutered increase.

Rather than slowly disappearing, studies have shown that feral cat colonies persist and may actually increase in size.

More recent reports of high pup production (up to 5000 pups) and increase in colonies size seem unlikely: given the scarce breeding outside of Sea Lion Island, we think that the whole population size may be significantly smaller.

On Anacapa Island from 1969 - 1984, average colony size was 900 nest attempts per year.Strong increases in both productivity and nest attempts were observed in the mid 1980s, and the Anacapa colony has produced a mean of 4,600 nests per year during 1985 - 2006.

The resulting change in availability of prey has in turn caused dramatic declines in the numbers of predatory seabirds in west coast colonies and corresponding increases in the size of those colonies on the south and east coast over the same period [58].