Question

Concerning spiders, is there any research on whether web-building is an inherited behavior, or if it must be observed and learned? e.g. Has anyone hatched spider eggs in isolation and observed whether the descendants still know how to build a web?

Answer 1

Web-building in spiders is an innate behavior, not learned, as evidenced by spiders' ability to spin webs even when hatched in isolation. Spider reproduction involves cautious approach by the male, and their venom and silk serve various ecological functions.

Step-by-step explanation:

Spiders are fascinating arachnids known for their ability to spin intricate webs. This behavior, rather than being learned, is an example of innate behavior. Innate behaviors are those that are hardwired into an organism's biology and don't require observation or learning from others. Research has shown that spiders, even when hatched in isolation, are able to spin webs, indicating that this ability is indeed inherited. This contrasts with learned behaviors, which are acquired through observing and imitating others.

Additionally, spider reproduction involves unique behaviors where the male must approach the female with caution to avoid predation. The fertilization process can be either external or internal, depending on the species, and parental care varies greatly among different spider species.

In terms of their role in the ecosystem, spiders are crucial for controlling insect populations, and their silk has multiple uses beyond web building, such as climbing, producing egg sacs, and wrapping prey. While nearly all spiders are venomous, only a small fraction poses any threat to humans.