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Two-year survey of Alitta succinea (Annelida: Nereididae) in fouling communities with notes on morphology and reproduction

Hannon, Mary Colleen; Schulze, Anja

Ocean and Coastal Research; Vol. 72 No. Suppl. 1 (2024)

Instituto Oceanográfico - Universidade de São Paulo 2024-04-10

Acceso en línea

  • Título:
    Two-year survey of Alitta succinea (Annelida: Nereididae) in fouling communities with notes on morphology and reproduction
  • Autor: Hannon, Mary Colleen; Schulze, Anja
  • Materias: Epitoky; Morphometrics; Metamorphosis; Pileworm; Population Dynamics
  • Es parte de: Ocean and Coastal Research; Vol. 72 No. Suppl. 1 (2024)
  • Descripción: Alitta succinea (Leuckart, 1847) is an errant segmented worm from the Nereididae family (Annelida) and isbroadly distributed around the greater Atlantic basin. A. succinea is a resilient mobile omnivore that plays animportant role in connecting lower and upper levels of the food web. Like many other nereidids, A. succineametamorphoses into reproductive swimming forms, called epitokes, before entering the water column to spawn.In Galveston, Texas the species A. succinea is commonly found in fouling communities attached to artificialstructures in marinas. This study presents a two-year survey of a population found in the Texas A&M Universityat Galveston Boat Basin. Over the two-year period, we collected over 2,000 A.succinea individuals for a grosscomparison of population dynamics and morphometrics. During the summer, we found high numbers of smallindividuals, indicating a primary recruitment period. This was further corroborated by the high number of epitokesin the summer compared to the winter and spring. During the summer and fall, the observed epitokes weresignificantly smaller than those found in the winter and spring, which supports previous research that showsa positive relationship between temperature and developmental rates. The continual presence of epitokesindicates the existence of a recruitment process that occurs continuously throughout the year. In terms ofmorphometrics, atokes and epitokes, both females and males, had their own unique profiles. As we expected,epitokes have larger eyes and wider posterior segments compared to atokes. Interestingly, we found females tobe significantly larger than males, no matter the season. This study presents
  • DOI: 10.1590/
  • Títulos relacionados: https://www.revistas.usp.br/ocr/article/view/222882/203765
  • Editor: Instituto Oceanográfico - Universidade de São Paulo
  • Fecha de creación: 2024-04-10
  • Formato: Adobe PDF
  • Idioma: Inglés
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