In rodent mating, the behavioral posture described during estrus is called what?

In rodent mating, the behavioral posture described during estrus is called what?

• A. Receptive stance
• B. Heat
• C. Lordosis
• D. Polyestrus

Answer: (C)

In rodents, the main concept here is a specific mating posture that signals sexual receptivity during estrus. The behavior is called lordosis: the female arches her back, elevates the hindquarters, and tucks the tail to one side, aligning with the male to facilitate mating. This posture is driven by hormonal changes, especially estrogen, which primes the nervous system for this receptive response. Lordosis is the precise, widely recognized sign researchers use to identify when a female is in estrus and ready for mating or reproductive procedures. Other terms don’t describe the posture itself. Heat is a general term for estrus, not the specific pose. Receptive stance is a descriptive alternative but isn’t the established term. Polyestrus refers to a pattern of multiple estrous cycles, not a behavior during estrus.

In rodents, the main concept here is a specific mating posture that signals sexual receptivity during estrus. The behavior is called lordosis: the female arches her back, elevates the hindquarters, and tucks the tail to one side, aligning with the male to facilitate mating. This posture is driven by hormonal changes, especially estrogen, which primes the nervous system for this receptive response. Lordosis is the precise, widely recognized sign researchers use to identify when a female is in estrus and ready for mating or reproductive procedures.

Other terms don’t describe the posture itself. Heat is a general term for estrus, not the specific pose. Receptive stance is a descriptive alternative but isn’t the established term. Polyestrus refers to a pattern of multiple estrous cycles, not a behavior during estrus.