Host specificity refers to the range of different hosts that a parasite, pathogen, or symbiotic organism can infect or associate with. It is a crucial factor in understanding ecological interactions and the evolution of host-parasite relationships, influencing disease dynamics and biodiversity.

Host Specificity

Host specificity

different hosts

parasite

A pathogen is a biological agent that causes disease or illness to its host, disrupting normal physiological functions. These agents include bacteria, viruses, fungi, and parasites, each employing unique mechanisms to invade and damage host tissues.

pathogen

symbiotic organism

Ecological interactions refer to the various ways organisms in an ecosystem relate to one another, affecting their survival, reproduction, and distribution. These interactions can be mutualistic, antagonistic, or neutral, shaping the dynamics and structure of ecological communities.

ecological interactions

evolution of host-parasite relationships

disease dynamics

Biodiversity refers to the variety and variability of life on Earth, encompassing the differences within species, between species, and among ecosystems. It is crucial for ecosystem resilience, human survival, and provides numerous ecological services, yet is threatened by human activities such as habitat destruction, pollution, and climate change.

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