What question did this study set out to answer?

To document the first occurrence of Pectodictyon pyramidale in the New World and identify its potential introduction pathways.

May 17, 2026Transylvanian Review of Systematical and Ecological Research0 citationsOpen Access

First Record of Pectodictyon Pyramidale (Chlorophyta, Sphaerodictyaceae) in the New World

JWJames K. WettererFlorida Atlantic University RRROMAN E. ROMANOVFakultet za Poslovni Menadžment u Baru

Puntos clave

To document the first occurrence of Pectodictyon pyramidale in the New World and identify its potential introduction pathways.
Collected samples from six artificial water bodies, including five freshwater retention ponds and one canal in Martin County, Florida, during summer 2025.
Identified Pectodictyon pyramidale using morphological characteristics and comparisons with previously documented species.
Pectodictyon pyramidale was successfully identified at the collected sites.
This species has been previously reported in regions such as Asia, Europe, and Africa, suggesting a wide distribution.
The introduction may be linked to ornamental aquatic plants like sacred lotus.

Resumen

Abstract Pectodictyon pyramidale Akiyama and Hirose is a microscopic alga currently placed in the family Sphaerodictyaceae with just three other species, Pectodictyon cubicum Taft, Dictyastrum mirabile Beck, and Sphaerodictyon coelastroides Jao. Pectodictyon pyramidale was originally described from Japan, and has been reported from additional sites in Asia, Europe, and Africa. Here, we report P. pyramidale for the first time in the New World. We collected this species at six artificial bodies of water (five freshwater retention ponds and one canal) in Martin County, Florida during summer 2025. This species probably established in the region as a result of accidental introduction, possibly accompanying imported aquatic ornamentals, such as the sacred lotus, Nelumbo nucifera Gaertn.

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