Question at position 13 You are conducting a study on pathogen spillover at a wildflower meadow. After analyzing samples, you find that 78% of wild bees visiting flowers previously visited by honey bees carry honey bee-specific pathogens. What is the most likely mode of transmission?Pheromones attracting pathogens to wild beesDirect contact between honey bees and wild beesAirborne transmission through sporesPathogen spillover occurring on shared flowers

Question

BlackTom AI · Accepted Answer

The scenario describes a high proportion of wild bees carrying honey bee–specific pathogens after visiting flowers that were previously visited by honey bees, which points to a transmission route mediated by the shared floral resource itself.
Option 1: 'Pheromones attracting pathogens to wild bees' suggests chemical cues lure pathogens directly to wild bees. Pathogens typically do not respond to host pheromones in this way, and the data emphasize a shared environment (flowers) rather than chemical attraction as the mechanism, making this explanation unlikely.
Option 2: 'Direct contact between honey bees and wild bees' would imply physical contact as the primary conduit. While some contact could occur, the observed pattern—pathogen presence linked to shared flowers—better fits an environmental intermediary rather than frequent direct encounters between species.
Option 3: 'Airborne transmission through spores' would require spores to travel through the air to colonies or individuals not in close proximity, which is less consistent with a scenario centered on flowers as the contact point for multiple visits from different bee species rather than aerosol spread.
Option 4: 'Pathogen spillover occurring on shared flowers' correctly reflects that the shared floral resource serves as a common substrate where pathogens shed by honey bees can be picked up by wild bees visiting the same flowers, producing the observed high carryover rate.
In sum, the data align with an indirect transmission pathway via shared flowers acting as a medium for pathogen transfer between bee species, rather than direct contact, chemical attraction, or airborne spread.

查看解析

登录即可查看完整答案

类似问题

Why is it really important, for wild bees, that beekeepers manage the parasites and pathogens in their apiaries?

In a consumer society, many adults channel creativity into buying things

Economic stress and unpredictable times have resulted in a booming industry for self-help products

People born without creativity never can develop it

A product has a selling price of $20, a contribution margin ratio of 40% and fixed cost of $120,000. To make a profit of $30,000. The number of units that must be sold is: Type the number without $ and a comma. Eg: 20000

Which of the following statement regarding cost is correct:

更多留学生实用工具

考试浏览器助手

风格化写作助手

论文查重助手

文献引用助手

课堂转译助手

课堂笔记助手

Quiz搜索助手

学校历年真题

智能刷题助手

智能匹配练习

希望你的学习变得更简单