Primeiro registro de Aedes albopictus no Estado de Santa Catarina, Brasil

Three adult females of Aedes (Stegomyia) albopictus (Skuse) were captured using a human bait in the surrounding dwelling area of the remaining rain forest in Itaguassu beach, island of São Francisco do Sul, northern coast of the state of Santa Catarina, Brazil.Três fêmeas adultas de Aedes (Stegomyia) albopictus (Skuse) foram capturadas por meio de isca humana em área peridomiciliar de remanescente de Mata Atlântica na Praia de Itaguaçu, Ilha de São Francisco do Sul, litoral Norte de Santa Catarina

Paridade de Anopheles cruzii em Floresta Ombrófila Densa no Sul do Brasil

OBJETIVO: Conhecer a paridade e desenvolvimento ovariano da espécie Anopheles cruzii, durante os períodos estacionais. MÉTODOS: As capturas foram realizadas quinzenalmente, no período matutino, de abril/2004 a abril/2005, no Parque Estadual do Palmito, município de Paranaguá litoral do Estado do Paraná. Mosquitos adultos foram capturados usando a técnica pouso homem. As dissecções foram feitas utilizando-se a técnica de Detinova e de Polovodova e a avaliação do desenvolvimento folicular, segundo os critérios de Christophers e Mer. RESULTADOS: Foram dissecadas 208 fêmeas de Anopheles cruzii. A maioria das fêmeas dissecadas nas estações eram nulíparas. Sendo que 14,4% eram nulíparas com folículo além do estádio II de Christophers & Mer, o que evidencia o exercício da hematofagia previamente à primeira oviposição. Observou-se que as populações de Anopheles cruzii são constituídas de indivíduos jovens, talvez em razão da alta mortalidade de fêmeas paridas. CONCLUSÕES: A provável discordância gonotrófica das fêmeas dissecadas é importante do ponto de vista epidemiológico, considerando que a fêmea pode procurar mais de um hospedeiro para completar a maturação dos seus ovos.OBJECTIVE: To determine the parity and ovarian development of Anopheles cruzii species during the seasons. METHODS: Collections were carried out fortnightly in the morning in the Palmito State Park in the municipality of Paranaguá, Southern Brazil, between April 2004 and April 2005. Adult mosquitoes were captured using human landing rate. Dissections were performed using Detinova's and Polovodova's methods and follicular development was assessed following Christophers and Mer's criteria. RESULTS: A total of 208 specimens of Anopheles cruzii were dissected. Most females dissected were nulliparous in the seasons; 14.4% of them were found to be nulliparous above Christophers and Mer's stage II, which shows previous blood meal prior to the first oviposition. It was observed that Anopheles cruzii populations comprised young mosquitoes, probably due to high mortality among parous females. CONCLUSIONS: The likely gonotrophic discordance is epidemiologically relevant because female mosquitoes can search for more than one host to complete the maturation of their eggs

Physiological Age and Longevity of Anopheles (Kerteszia) cruzii Dyar & Knab (Diptera: Culicidae) in the Atlantic Forest of Southern Brazil

ABSTRACT -We analyzed the reproductive status, ovarian development, daily survival rate, and length of the gonotrophic cycle in females of Anopheles (Kerteszia) cruzii Dyar & Knab, to determine how these factors infl uence the risk of malaria transmission in the coastal region of the state of Paraná, southern Brazil. In the Palmito State Forest, Paranaguá, females were captured at dawn and dusk by aspiration, bimonthly from December 2006 through March 2007. A total of 2,268 females were captured, of which 454 were dissected. Of these, 48% were parous, 50% not reproductive, 73% in Christopher and Mer stages I and II, 23% in stages III to V, 55% nulliparous, 14% uniparous, and 11% had blood in their midgut. Daily survival was 0.24 ± 0.03 overall, 0.51 ± 0.04 for females captured at dusk, and 0.25 ± 0.03 for those captured at dawn. The Davidson equation for calculation of the gonotrophic cycle was inadequate for An. cruzii populations. Females captured at dusk had a higher survival rate than those from dawn, which means that more females of the dusk population enter the parasite extrinsic cycle. The continuous activity and abundance of A. cruzii in the Palmito State Forest suggests that the conditions are very favorable for its development, with a potential for participation in the protozoan's transmission cycle

Ablabesmyia

Key to the larvae of subgenera of Ablabesmyia 1. Maxillary palp with 2 sclerotized segments................................................................................................ 2 - Maxillary palp with 3 or more sclerotized segments. Cosmopolite. ........................................ Ablabesmyia 2. Procercus L/ W 6.9 –8.2; toothed margin of ligula straight and middle three teeth truncated. Nearctic and Neotropical. .......................................................................................................................................Asayia - Procercus L/ W 2.3 –3.7; toothed margin of ligula concave, if straight then middle three teeth pointed.... 3 3. Procercus L/ W 2.3 –3.4, with 7 apical setae. Worldwide except Australia. ..................................... Karelia - Procercus L/ W 3.2 –3.7, with 6 apical setae. Neotropical. ............................................................... SartaiaPublished as part of Oliveira, Caroline S. N., Fonseca-Gessner, Alaíde A. & Silva, Mário Antônio Navarro, 2008, The immature stages of Ablabesmyia (Sartaia) metica Roback, 1983 (Diptera: Chironomidae) with keys to subgenera, pp. 61-68 in Zootaxa 1808 on page 66, DOI: 10.5281/zenodo.18274