Biological aspects of Harmonia axyridis in comparison with Cycloneda sanguinea and Hippodamia convergens

The objective of this work was to evaluate the development, survival, reproductive capacity, and longevity of the Asian ladybug Harmonia axyridis in comparison with Cycloneda sanguinea and Hippodamia convergens. Coccinellid larvae and adults were fed daily with Schizaphis graminum. Ten couples of each species were isolated for evaluation of the adult phase. The duration of the larval stage of H. axyridis is the longest (10.2 days) and its adults are the heaviest (29.7 mg) compared with C. sanguinea and H. convergens. The three species showed similar percentages of survival during the developmental stages. An average of 82% of C. sanguinea, H. axyridis, and H. convergens larvae reached adulthood, which indicates that temperature (25°C) and the offered prey are favorable to coccinellid development. Harmonia axyridis produces a higher total number of eggs per female (1,029.2) than the other evaluated species. However, H. axyridis, which lives for an average of 147.2 days, does not show a significantly greater longevity than C. sanguinea (87.2 days) and H. convergens (134.3 days).

Efeitos do diabetes gestacional moderado e da reposição com insulina na lactação sobre a próstata ventral do rato Wistar

Pós-graduação em Biologia Geral e Aplicada - IBB

Avaliação do desenvolvimento do sistema genital e da funçao reprodutiva da prole feminina de ratos Wistar expostos à cisplatina durante a peri-puberdade

Pós-graduação em Biologia Geral e Aplicada - IBB

Circulação do vírus rábico em gambás (Didelphis albiventris e Didelphis aurita) nos municípios de Torre de Pedra, Bofete e Anhembi-São Paulo

Pós-graduação em Biotecnologia Animal - FMVZ

Neonatally induced mild diabetes: influence on development, behavior and reproductive function of female Wistar rats

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Desenvolvimento reprodutivo de ratos machos expostos ao agente hipolipemiante rosuvastatina

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Repercusões a longo prazo do padrão alimentar ocidental ocorrido durante a gestação, lactação e fase juvenil na susceptibilidade ao desenvolvimento de câncer do cólon em ratos

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Effects of maternal diabetes on male offspring: high cell proliferation and increased activity of MMP-2 in the ventral prostate

This study presents a comprehensive view of the histological and functional status of the prostate of adult rat offspring of mothers subjected to gestational diabetes induced by alloxan. The ventral prostate of male adult offspring of diabetic (DP) or normal (CP) mothers was evaluated for collagen fibres, cell death, fibroblasts, smooth muscle cells, cell proliferation, matrix metalloproteinases (MMPs), androgen receptors (AR), transforming growth factor beta 1 (TGF beta-1), catalase and total antioxidant activity. The prostates of DP animals were lower in weight than those of the CP group. The DP group also exhibited hyperglycaemia and hypotestosteronemia, higher cell proliferation and AR expression, a reduction in alpha-actin (possibly interfering with the reproductive function of the prostate), and enhanced activity of MMP-2, although the absolute content of MMP-2 was lower in this group. These findings were associated with increased TGF beta-1 and decreased collagen distribution. The prostates of DP rats additionally exhibited reductions in catalase and total antioxidant activity. Thus, rats developing in a diabetic intrauterine environment have glycaemic and hormonal changes that impact on the structure and physiology of the prostate in adulthood. The increased AR expression possibly leads to elevated cell proliferation. Stromal remodelling was characterized by enhanced activity of MMP-2 and collagen degradation, even with increased TGF beta-1 activation. These changes associated with increased oxidative stress might interfere with tissue architecture and glandular homeostasis.

Impact of gestational diabetes and lactational insulin replacement on structure and secretory function of offspring rat ventral prostate

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Gestational protein restriction delays prostate morphogenesis in male rats

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Impact of adrenalectomy and dexamethasone treatment on testicular morphology and sperm parameters in rats: insights into the adrenal control of male reproduction

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

DNA Damage and Its Cellular Response in Mother and Fetus Exposed to Hyperglycemic Environment

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Divergência genética entre árvores matrizes de Ceiba speciosa St. Hil. para características de frutos e sementes

Pós-graduação em Agronomia (Genética e Melhoramento de Plantas) - FCAV

Prenatal exposure to testosterone masculinises the female gerbil and promotes the development of lesions in the prostate (Skene

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Sistema de avaliação e tratamento da coluna lombar com o uso de tração mecânica

Pós-graduação em Engenharia Mecânica - FEG