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The presence of a parent significantly reduces the rate of infanticide because conspecific adults ignore juveniles when a parent is present, likely because another adult is more threatening to the aggressive lizard. Therefore, a juvenile living within its parents' own territory will experience far less attacks from conspecific adults. [42] [43]
Female and male gerbils were put into one of four housing conditions (parents only, parents and siblings, siblings, and unrelated). Again, a pup test was conducted (same as previous study above), with each male and female to observe responses to an unfamiliar pup in the cage, while progesterone was measured via blood sample following the test.
Infanticide is the killing of a neonate after birth. In zoology, this commonly refers to the killing and in some cases consumption of newborn animals by either a parent or an unrelated adult of the species.
For example, in baboons at Amboseli, rates of fetal loss increase following the immigration of aggressive males. [30] In some social systems, lower-ranking primate females may delay reproduction to avoid infanticide by dominant females, as seen in common marmosets. In one instance, the dominant marmoset female killed the offspring of a ...
The new study compared infant death rates in Texas from 2018 to 2022 to those of 28 other states. The data included newborns 28 days or younger and infants up to 12 months old.
A boa constrictor in the U.K. gave birth to 14 babies — without a mate. The process is called parthenogenesis, from the Greek words for “virgin” and “birth.” It tends to occur in ...
Abortion is a safe procedure, but it's less safe later in the pregnancy." He suggest that parental involvement laws have a small effect on abortion rates compared with improved sexual education and birth control access and usage. Many minors of childbearing age are sufficiently mature to make abortion decisions by themselves. [27]
Twice in the past week alone, former President Donald Trump has pushed his often-repeated falsehood that some U.S. states, in their zeal to protect abortion rights, allow for the killing of babies ...