Breeding Period

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

References in periodicals archive ?
For the game, a successful breeding period allows for a very good hunting season.
Summary: Ban is for the breeding period from March 1 to 30
Fisheries official In Hul, a WCS project coordinator, said the reptile's breeding period spans from January to March.
The ministerial decision number 501 of 2015 bans trading of these two fish varieties from March 1 to April 30 - their breeding period.
Due to the temperature increase around the world, approximately 60% of studies reported that the breeding period started earlier than ever before (Dunn, 2004).
The "second rut" theory is the idea that about a month after November's peak breeding period, a certain percentage of does that didn't get bred when they came into heat in November, as well as some doe fawns, will all come into heat roughly 30 days later and trigger a second rut--a "mini-rut.
It doesn't last long enough to top up the icecap, but if it sticks around for a couple of weeks in the key breeding period that's enough to prevent all but a few geese breeding.
According to a survey conducted by Hybu Cig Cymru - Meat Promotion Wales (HCC) on the management of rams pre- and post-tupping, 56% of farmers could potentially improve the way they maintain the condition of their rams for the breeding period.
This suggestion is consistent with our review of tadpole specimens as all seven lots collected in September likely resulted from late-season breeding activity, in which individuals bred long after the primary breeding period for that region.
aurora were previously thought to be explosive breeders with a relatively short 2-wk breeding period (Briggs 1987).
Based on our findings, we recommend April, October, November, and December as the optimum breeding period for the region and breeds addressed here.
During the breeding period owls feed on a diverse array of vertebrate and invertebrate species with rodents and small birds contributing the greatest biomass (Gehlbach, 1995).