Breeding Period

The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Breeding Period

 

(in animals), the time of year when mating occurs. The breeding period in many vertebrates is characterized by the development of secondary sexual characteristics in males and the occurrence of special forms of behavior, such as “courtship” of the female by the male and fierce fights between males. In nontropical regions the period has a sharply defined seasonal character. The development of sex glands and the accompanying phenomena are realized on the basis of the internal physiological rhythm of the organism controlled by the influence of external factors (photoperiod, temperature, and so on). In the tropics, reproduction in many animals is not strictly periodic; in arid tropical regions the beginning of the breeding period is determined by the onset of the rainy season. In the majority of invertebrates, reproduction is not accompanied by ritual forms of behavior, and the season of reproduction may only conditionally be called a breeding period.

I. A. SHILOV

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
During winter, it descends down to the areas of lower altitude and in summers and during breeding period, it prefers the high altitudinal forest.
With July having been a key breeding period for many native and migrant species, and warmer summer days offering the perfect opportunity to make the most of the British countryside, many are unaware of the impact their activities can have on wild bird nest sites.
The mangrove area, which is a spooning ground for danggit or rabbitfish or spine foot fish, was also declared as closed for all fishing activities during the months of March, April and May, identified as the breeding period of fish species.
Birds time their breeding period to exploit the availability of natural foods: earthworms in the case of blackbirds and song thrushes, and caterpillars in the case of tits and chaffinches.
Most research on urbanisation in birds reports the negative effects of urban environments on them, and no study known to us examines breeding territorial occupancy outside the breeding period. In general, occupancy of shorebird breeding territories outside the breeding period is poorly studied, though some shorebirds are known to visit their territories during the non-breeding season (Weston and Elgar 2005).
Unfortunately, this long breeding season can cause serious problems for jills (female ferrets) who do not have access to a male, as only mating or the end of the breeding period can end a jill's heat.
'We have imposed a 22-day ban, starting from October 7, on catching, selling and transporting hilsa fish in a 7,000-km breeding ground to ensure the safe spawning of this fish during its peak breeding period, Fisheries and Livestock Minister Narayon Chandra Chanda told a press conference at his ministry.
Tup checklist WHILE figures are important, so too is checking the physical wellbeing of rams before the breeding period, said SRUC's Dr John Vipond.
"Only the most mobile of animals escape and, of course, we are in peak breeding period for many - from curlew to ant.
On the other hand, he pointed out that the ministerial decision to ban trading of the two popular fish varieties during their breeding period, is intended to increase fish stock in the UAE.
The short breeding period on land each year is the only time when naturalists learn more of their habits and how to conserve their habitat.