ABSTRACT. G rowth and reproduction of Bradybaena similaris (Férussac) (Moilusca, Xanthonychidae) in laboratory conditions. Biologica l aspects of Bradybaena similaris (Férussac, 182 1) were studied, such as: onset of sex ual maturity, occ urrence of self-fertilization, oviposi tion, incubation period, eclos ion rate and shell lengt h measurement at different stages of developme nt. It was noted that in isolated B. similaris the minimum and max imum ti me for reaching sexual maturity were 109 and 180 days, respectively. When kept in groups, the minimum time was 78 days. The occ urrence of self-fertili zation was observed in 18,4% ofspec imens. The total number of eggs per oviposition varied fro m one to 38 (average: 3,5 ± 7, 15), the total number of eggs per mollusc varied from one to 39 (average: 7,0 ± 10,21) and the total number of oviposition per moll usc vari ed form one to six (averege: 2,0 ± 1,27). Thirty oviposit ions (894 eggs) were fo ll owed and the minimum eclos ion time of the young was 14 days, the maximum eclosion time was 35 days and the average 23 ,69 days. The eclosion average percent was 8 1,22. As to the shelllength in different growth stages , it was observed that in B. sil1lila ris the length ofthe shell was similar unti l 30 days for age . After this period iso lated specimens acquired a greater growth rhythm when compared to that of grouped specimens. The maximum shell length of isolated spec imens was 17,4 mm whereas grouped spec imens reached 14,5 mm . In this specie, individ uais that were kept grouped became sex uall y mature earlier than isolated ones. Individ uais kept isolated reach larger length of shell. In the moment of the sex ual maturity, the Iength of the shell in the individuais tha were kept isolated was smaller than the grouped. KEY WORDS . Bradybaena similaris, biology, growth , reprod ucti on 8 radybaena similaris (F é
RESUMOEsta revisão objetiva alertar e informar a população em geral e os profissionais de saúde quanto à atuação do caramujo africano [Achatina fulica (Bowdich, 1822)], como hospedeiro intermediário, na transmissão de nematoides de interesse veterinário e humano. Também demonstra o papel das conchas como criadouros para mosquitos vetores de diversas viroses, algumas inclusive com alta incidência no norte e noroeste fluminense.Palavras-chave: Achatina fulica; Controle de Caramujos; Zoonoses. ABSTRACTThis review aims at alerting and informing the general population and health professionals about the acting of the African snail [Achatina fulica (Bowdich, 1822)] as an intermediate host in the transmission of nematodes of veterinary and human interest. It also demonstrates the role of shells as breeding sites for mosquito vectors of various viruses, some of which are also highly prevalent in the north and northwest of the state of Rio de Janeiro.
ABSTRACT. Growth and reproduction of Leptinaria IlIlilamellata (d'Orbigny) (Mollusca, Subulinidae) in laboratory conditions. Biological aspects of Leptinaria un/amellata (d ' Orbigny, 1835) were studied, such as : onset of sexual maturity, occurrence of self-fertilization and shell length measurement at different stages of development. In isolated specimens of L. uni/ameI/ata, sexual maturity was reached aI 74 days (minimum time) and 104 days (maximum lime). Forthe grouped specimens, the rninimum time was 71 days. The occurrence of self-fertilizalion was observed in both species, 100% of specimens. The 10lal number ofyoung per birth varied from one to 22 (average: 7,35 ± 5,78), lhe lotai number of offsprings per mollusc varied from IWO to eighl (average: 4.1 ± 1,41) and tOlal number of young per mollusc varied from five to 46 (average: 30.21 ± 8,08). As to lhe shelllength in different growth slages, il was observed lhat in L. uni/amellata, growth rhylhm was similar until 15 days for age . A f ter this period grouped specimens showed a high growth rhythm until 105 days after which the growth rhythm of grouped specimens beca me constant and the growth rhythm isolated specimens became greater. Grouped and isolated specimens reached a maximum size of 18,7 mm and 20,6 mm respectively. In lhe moment of the sexual maturity, lhe length ofthe shell in the individuais that were kept grouped was smaller than lhe isolaled ones for L. unilamel/ata. In this specie individuais thal were kepl isolated reach larger length of shell.
O meio ambiente é um recurso heterogêneo que deve ser tratado e estudado também de forma heterogênea. Os objetivos desse trabalho foram: construir uma maquete que simula a erosão e o assoreamento em corpos d’água após a retirada da mata ciliar, e construir um jogo didático para aprofundar o conhecimento acerca do tema proposto. Esse trabalho buscou envolver os participantes na discussão de questões sociais, políticas e econômicas que contribuem para a degradação/preservação ambiental. Os resultados obtidos com ambos os recursos foram satisfatórios, pois os alunos puderam observar de forma tridimensional o que as ações humanas têm provocado no ambiente, além de discutirem suas consequências e ações que podem minimizar os seus efeitos. A adequação da abordagem permite que a metodologia seja utilizada em qualquer ciclo de ensino, desde o fundamental até a formação continuada de professores.
RESUMOEntre as dificuldades enfrentadas pelos alunos nos cursos de ciências biológicas é a transformação de conhecimentos adquiridos nos conteúdos teóricos acadêmicos em conteúdos inteligíveis nos cursos da educação básica bem como uma interligação entre cotidiano e prática extraída desses conteúdos. Por outro lado, os alunos terão um aprendizado mais efetivo se puderem valer-se de metodologias que permitam um intercâmbio entre os conteúdos acadêmicos e a possibilidade de uma aplicação desses conteúdos em situações cotidianas. O presente trabalho tem por objetivo descrever uma metodologia que permita desenvolvimento de aspectos interdisciplinares. É um trabalho indicado para ser aplicado com alunos de graduação do curso de Ciências Biológicas utilizando o gastrópode terrestre Bradybaena similaris (Férussac, 1821) como modelo. Discute-se nesse trabalho a fisiologia do crescimento e da reprodução, a genética, ecologia e o comportamento dessa espécie. Ao final propõe-se uma metodologia de discussão e exposição dos resultados obtidos.Palavras-chave: interdisciplinaridade; gastrópode terrestre; trabalhos práticos. ABSTRACTAmong the difficulties faced by students in courses in biological sciences is the transformation of theoretical knowledge acquired in academic content into intelligible content in courses of basic education as well as a connection between everyday life and practice drawn from these contents. Furthermore, students will have a more effective learning if they can draw on methodologies that allow an exchange between academic content and the possibility of applying such content in everyday situations. This paper aims to describe a methodology that enables the development of interdisciplinary aspects. It's a job specified to apply to graduate students in Biological Sciences course using the terrestrial gastropod Bradybaena similaris (Férussac, 1821) as a model. We discuss in this work the physiology of growth and reproduction, genetics, ecology and behavior of this species. At the end we propose a methodology for discussion and display of results.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.