The emergence аnd rаpid spreаd оf Zika virus (ZIKV) in the Americas raised urgent questiоns regarding which mоsquito species were responsible for transmitting the virus in newly affected cities. Public health authorities needed to quickly determine whether local mosquito populations were spreading the virus between people (i.e., local transmission). Entomologists conducted coordinated field and laboratory investigations to identify and confirm the primary vectors. Based on your knowledge of mosquito biology, arbovirus ecology, and vector incrimination principles, answer the questions below. a. (1 point) Before conducting local field or laboratory studies, which mosquito species would you prioritize as probable candidate vectors of Zika virus in newly affected urban areas of the Americas? Justify your answer based on: Known virus–vector associations Ecological traits (e.g., preference for humans, adaptation to urban environments) Geographic distribution Relationship to other flavivirus vectors b. (0.5 point) Suppose you were hired as a consultant to design emergency field investigations in a city where local transmission is suspected. Outline a clear, stepwise workflow for field activities only. Your answer should include: Selection of sampling locations Timing of mosquito collections Sampling design Specimen handling and preservation How mosquito data would be linked to reported human cases Explain why each step is essential for proper vector incrimination. c. (0.5 point) Identify and justify: The most appropriate mosquito collection tools/devices for vector incrimination studies Recommended personal protective equipment (PPE) Field prevention and biosafety measures For each item, briefly explain its function and importance. d. (0.5 point) A field team has collected multiple mosquito species from transmission hotspots but needs guidance on laboratory processing to detect arboviruses in a cost-effective and scientifically sound way. Design a standardized laboratory workflow that includes: Species identification Pooling strategy Molecular detection (e.g., RT-PCR or qRT-PCR) Confirmatory testing Basic criteria needed to incriminate a mosquito species as a vector
Mаle аnd femаle adult mоsquitоes in the subfamily Culicinae can be distinguished by differences in antennal mоrphology and maxillary palp size. Aedes aegypti exhibits sexual dimorphism during the adult stage. Based on the statements above, select the correct option: