Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Diversity of Protists III01:27

Diversity of Protists III

1.9K
Rhizaria are a diverse group of unicellular protists characterized by their threadlike cytoplasmic extensions known as pseudopodia. These structures aid in both locomotion and feeding, giving Rhizaria an amoeboid appearance. Their amoeboid morphology once led to taxonomic confusion, but molecular phylogenetics has clarified their evolutionary placement and emphasized their shared use of pseudopodia despite divergent lineages.This clade comprises diverse lineages such as Chlorarachniophyta,...
1.9K
Introduction to Seed Plants03:40

Introduction to Seed Plants

71.3K
Most plants are seed plants—characterized by seeds, pollen, and reduced gametophytes. Seed plants include gymnosperms and angiosperms.
71.3K
Diversity of Protists IV01:27

Diversity of Protists IV

2.0K
Amoebozoa represent a diverse group of terrestrial and aquatic protists that utilize lobe-shaped pseudopodia for locomotion and feeding. This characteristic differentiates them from the Rhizaria, which possess threadlike pseudopodia. The primary classifications within Amoebozoa include gymnamoebas, entamoebas, and the plasmodial and cellular slime molds. Phylogenetic evidence indicates that Amoebozoa diverged from a lineage that ultimately gave rise to fungi and animals.Gymnamoebas and...
2.0K
Microbial Morphologies01:29

Microbial Morphologies

4.8K
Bacterial and archaeal cells exhibit remarkable diversity in shape and structure, critical in their adaptability and functionality. Among bacteria, the most commonly observed shapes include cocci and bacilli. Cocci are spherical and may exist singly or in groupings such as pairs (diplococci), chains (streptococci), clusters (staphylococci), or tetrads. Bacilli, in contrast, are rod-shaped and can also occur as single cells, in pairs, or chains, depending on their environmental and genetic...
4.8K
Formation of Species01:31

Formation of Species

46.7K
Speciation describes the formation of one or more new species from one or sometimes multiple original species. The resulting species are discrete from the parent species, and barriers to reproduction will typically exist. There are two primary mechanisms, speciation with and without geographic isolation—allopatric and sympatric speciation, respectively.
46.7K
Trihybrid Crosses02:27

Trihybrid Crosses

26.5K
Trihybrid Crosses
Some of Mendel’s crosses examined three pairs of contrasting characteristics. Such a cross is called a trihybrid cross. A trihybrid cross is a combination of three individual monohybrid crosses. For example, plant height (tall vs. short), seed shape (round vs. wrinkled), and seed color (yellow vs. green).
The F1 generation plants of a trihybrid cross are heterozygous for all three traits and produce eight gametes. Upon self-fertilization, these gametes have an equal...
26.5K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Psychological interventions to reduce suicidality in high-risk patients with major depression: a randomized controlled trial.

Psychological medicine·2016
Same author

Some Phases in the Treatment of Lobar Pneumonia.

Journal of the National Medical Association·2010
Same author

Salivary gland tumours [abridged].

Proceedings of the Royal Society of Medicine·2010
Same author

Recurrent Attacks of Acute Pancreatic Dysfunction with Spontaneous Recovery: (Section of Surgery).

Proceedings of the Royal Society of Medicine·2009
Same author

Primary and revision total hip replacement in patients who are Jehovah's Witnesses.

Clinical orthopaedics and related research·1999
Same author

Human performance evaluation of a metaphor graphic display for respiratory data.

Methods of information in medicine·1994
Same journal

Integrative taxonomy of Harveylithon (Corallinales, Rhodophyta) reveals three new species from Korea and expanded diversity in the northwestern Pacific.

Journal of phycology·2026
Same journal

Mysticladia gen. nov. (Cladophorales, Ulvophyceae): A new genus encompassing two long-recognized Cladophora species from the South Atlantic Ocean.

Journal of phycology·2026
Same journal

Selective grazing in the heterotrophic dinoflagellate Oxyrrhis marina: Effects of prey type, size, temperature, and nutrient limitation.

Journal of phycology·2026
Same journal

Impact of the invasive diatom species Cymbella janischii on riverine microbial biofilm communities and a potential role of bacterially produced zeatin.

Journal of phycology·2026
Same journal

Spore priming by coastal upwelling in the intertidal kelp Lessonia spicata.

Journal of phycology·2026
Same journal

Environmental constraints on freshwater red algae in Estonian streams: Insights from long-term observations and machine-learning models.

Journal of phycology·2026
See all related articles

Related Experiment Video

Updated: Mar 22, 2026

Scanning Electron Microscopy SEM Protocols for Problematic Plant, Oomycete, and Fungal Samples
10:57

Scanning Electron Microscopy SEM Protocols for Problematic Plant, Oomycete, and Fungal Samples

Published on: February 3, 2017

30.5K

MORPHOLOGICAL VARIATION IN PTEROCLADIA PYRAMIDALE(1).

J G Stewart1

  • 14996 Mt. Almagosa Dr., San Diego, California 92111.

Journal of Phycology
|April 13, 2016
PubMed
Summary
This summary is machine-generated.

This study unites seven Pacific Pterocladia species and European P. capillacea collections under Pterocladia capillacea. Morphological analysis revealed varied growth forms in P. capillacea, influenced by environmental factors.

More Related Videos

Author Spotlight: Exploring Bradysia coprophila's Unique Biology – A Guide to Laboratory Maintenance
04:26

Author Spotlight: Exploring Bradysia coprophila's Unique Biology – A Guide to Laboratory Maintenance

Published on: April 19, 2024

2.0K
Imaging and Analysis of Tissue Orientation and Growth Dynamics in the Developing Drosophila Epithelia During Pupal Stages
08:25

Imaging and Analysis of Tissue Orientation and Growth Dynamics in the Developing Drosophila Epithelia During Pupal Stages

Published on: June 2, 2020

10.1K

Related Experiment Videos

Last Updated: Mar 22, 2026

Scanning Electron Microscopy SEM Protocols for Problematic Plant, Oomycete, and Fungal Samples
10:57

Scanning Electron Microscopy SEM Protocols for Problematic Plant, Oomycete, and Fungal Samples

Published on: February 3, 2017

30.5K
Author Spotlight: Exploring Bradysia coprophila's Unique Biology – A Guide to Laboratory Maintenance
04:26

Author Spotlight: Exploring Bradysia coprophila's Unique Biology – A Guide to Laboratory Maintenance

Published on: April 19, 2024

2.0K
Imaging and Analysis of Tissue Orientation and Growth Dynamics in the Developing Drosophila Epithelia During Pupal Stages
08:25

Imaging and Analysis of Tissue Orientation and Growth Dynamics in the Developing Drosophila Epithelia During Pupal Stages

Published on: June 2, 2020

10.1K

Area of Science:

  • Marine Botany
  • Algology
  • Taxonomy

Background:

  • The genus Pterocladia includes several species with complex taxonomic relationships.
  • Previous classifications have not fully resolved the distinctions between Pacific and European Pterocladia species.

Purpose of the Study:

  • To clarify the taxonomic status of Pacific Pterocladia species and their relationship to European Pterocladia capillacea.
  • To investigate morphological variation within Pterocladia populations in response to environmental conditions.

Main Methods:

  • Morphological analysis of ten criteria in Pterocladia specimens from diverse geographic locations.
  • Comparison of morphological data with existing descriptions and herbarium collections.
  • Assessment of environmental factors influencing Pterocladia growth forms.

Main Results:

  • Seven Pacific Pterocladia species and European P. capillacea were found to be conspecific.
  • All examined Pacific taxa, including P. pyramidale, P. complanata, P. mexicana, P. robusta, P. okamurai, P. tenuis, and P. densa, are synonymous with P. capillacea.
  • Morphological variations in P. capillacea from southern California correlate with light, temperature, and surf action.

Conclusions:

  • Pterocladia capillacea is a broadly distributed species encompassing previously described Pacific taxa.
  • Morphological plasticity allows P. capillacea to adapt to various environmental conditions.
  • The unification of these taxa simplifies the taxonomy of the Pterocladia genus.