Night underwater rides: the activity of a sandy beach gastropod is affected by interactive effects of light availability and water level

Autor(es)

Checon, Helio H. ^{[1, 2]} ; Silva, Mariana ^{[1, 3]} ; Corte, Guilherme N. ^{[1, 2]} ; Yokoyama, Leonardo Q. ^{[1, 4]} ; Teodosio, M. Alexandra ^[3] ; Turra, Alexander ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Inst Oceanog, Praca Oceanog 191, BR-05508120 Sao Paulo - Brazil

^[2] Univ Estadual Campinas, Dept Biol Anim, Rua Monteiro Lobato 255, BR-13083862 Campinas, SP - Brazil

^[3] Univ Algarve Faro, CCMAR, Faro - Portugal

^[4] Univ Fed Sao Paulo, Inst Mar, Lab Ecol & Gestao Costeira, Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: MARINE BIOLOGY RESEARCH; v. 17, n. 5-6 OCT 2021.
• Citações Web of Science: 0

Resumo

Olivella minuta is an abundant gastropod and important consumer on beach food webs, whose feeding activity was recently demonstrated to be reduced when submerged. Our study aimed to test the interactive effects of water level and light in the activity of O. minuta. Experiments were conducted in the laboratory simulating four conditions: (1) Light, emerged (LE); (2) Dark, emerged (DE); (3) Light, immersed (LI); and (4) Dark, immersed (DI). Our results showed a significant interaction between water level and light variation. During conditions of light availability, the results corroborated our expectations and individuals were less active when immersed. However, individuals showed the highest activity when immersed during lightless conditions. This enhanced activity on dark immersed periods can be explained by optimization of feeding strategy, to benefit from the input of food resources brought by the tide. This could also be an adaptation to avoid predation by visual predators, which needs to be further evaluated. Our results show that patterns of activity of O. minuta may be susceptible to impacts of light pollution and coastal squeezing, and that the interacting effects of light and water level need to be considered in further studies on the behaviour of beach organisms. (AU)

• Processo FAPESP: 09/15893-5 - Variabilidade interpopulacional em praias arenosas: estudo de caso sobre a zonação, reprodução e crescimento de Olivella minuta (Gastropoda, Olividae)
• Beneficiário: Leonardo Querobim Yokoyama
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 17/17071-9 - Preservando praias arenosas: biodiversidade, bens e serviços e impactos em um ecossistema negligenciado
• Beneficiário: Guilherme Nascimento Corte
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 09/17585-6 - Ecologia populacional de Olivella minuta (Link, 1807) (Gastropoda, Olividae) na zona entremarés das praias do Araçá e de Barequeçaba, Litoral Norte do Estado de São Paulo
• Beneficiário: Alexander Turra
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 18/22036-0 - Avaliação do potencial de diferentes índices bentônicos para determiner a integridade ecólogica de praias arenosas: subsídios para práticas de manejo e monitoramento
• Beneficiário: Hélio Hermínio Checon
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado