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

605
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,...
605
Diversity of Protists IV01:27

Diversity of Protists IV

612
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...
612
Microbial Morphologies01:29

Microbial Morphologies

1.6K
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...
1.6K
Other Algae01:19

Other Algae

262
The group Stramenopiles include some phototrophic microorganisms. Members of this group possess flagella covered in numerous short, hairlike extensions, a feature that inspired the group's name, derived from the Latin words for "straw" and "hair." Some of the main categories of Stramenopiles include diatoms, golden algae, and brown algae.Diatoms are unicellular, photosynthetic eukaryotes, with over 200 known genera. They play a key role in the planktonic communities of both marine and...
262
Diversity of Protists II01:27

Diversity of Protists II

662
Alveolates are a group of organisms recognized by the presence of alveoli, which are cytoplasmic sacs located beneath the cell membrane. While their function remains uncertain, alveoli may help regulate water balance by controlling how much water enters and leaves the cell. In dinoflagellates, these structures may serve as armor plates. There are three major types of alveolates: ciliates, which move using cilia; dinoflagellates, which use flagella for movement; and apicomplexans, which are...
662
Diversity of Protists I01:15

Diversity of Protists I

684
Excavata is a diverse group of protists that includes both chemoorganotrophic and phototrophic species, with some thriving in anaerobic environments. Among the key groups within Excavata are diplomonads and parabasalids, which are flagellated protists that lack mitochondria and chloroplasts. These microorganisms typically inhabit anoxic environments, such as the intestines of animals, where they exist either symbiotically or as parasites, relying on fermentation for energy production. Some...
684

You might also read

Related Articles

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

Sort by
Same author

Detecting stabilizing dynamics in biased biodiversity time series using Haar fluctuation analysis.

Proceedings. Biological sciences·2026
Same author

Foraminifera as indicators of species invasion: <i>Ammonia confertitesta</i> in Long Island Sound.

Science advances·2025
Same author

Shell dissolution rates differ fourfold between mussel species.

Royal Society open science·2025
Same author

Coupled, decoupled, and abrupt responses of vegetation to climate across timescales.

Science (New York, N.Y.)·2025
Same author

Consistent energy-diversity relationships in terrestrial vertebrates.

Science (New York, N.Y.)·2025
Same author

Sensitivity of ocean circulation to warming during the Early Eocene greenhouse.

Proceedings of the National Academy of Sciences of the United States of America·2024

Related Experiment Video

Updated: Dec 8, 2025

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

29.9K

Extensive morphological variability in asexually produced planktic foraminifera.

Catherine V Davis1,2, Caitlin M Livsey3, Hannah M Palmer3

  • 1Department of Earth and Planetary Sciences, Yale University, New Haven, CT, USA. catherine.davis@yale.edu.

Science Advances
|September 16, 2020
PubMed
Summary
This summary is machine-generated.

Marine protists like Neogloboquadrina pachyderma exhibit both sexual and asexual reproduction, alongside significant phenotypic plasticity. This explains their adaptability and widespread presence in diverse ocean environments.

More Related Videos

Sexual Crosses with the Mucoromycete Phycomyces blakesleeanus
05:34

Sexual Crosses with the Mucoromycete Phycomyces blakesleeanus

Published on: June 6, 2025

415
The Barnacle Balanus improvisus as a Marine Model - Culturing and Gene Expression
07:47

The Barnacle Balanus improvisus as a Marine Model - Culturing and Gene Expression

Published on: August 8, 2018

15.3K

Related Experiment Videos

Last Updated: Dec 8, 2025

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

29.9K
Sexual Crosses with the Mucoromycete Phycomyces blakesleeanus
05:34

Sexual Crosses with the Mucoromycete Phycomyces blakesleeanus

Published on: June 6, 2025

415
The Barnacle Balanus improvisus as a Marine Model - Culturing and Gene Expression
07:47

The Barnacle Balanus improvisus as a Marine Model - Culturing and Gene Expression

Published on: August 8, 2018

15.3K

Area of Science:

  • Marine biology
  • Protistology
  • Oceanography

Background:

  • Marine protists are crucial for pelagic ecosystems and carbon cycling.
  • Rhizarian biomass constitutes over half of mesozooplankton in oligotrophic oceans.
  • Limited understanding of heritability and life history in marine protists hinders knowledge of environmental influences on diversity.

Purpose of the Study:

  • To investigate asexual reproduction, morphologic plasticity, and ontogeny in Neogloboquadrina pachyderma.
  • To understand the mechanisms driving diversity and ubiquity of planktic foraminifera.

Main Methods:

  • Laboratory culture of Neogloboquadrina pachyderma.
  • Observation of reproductive strategies (sexual and asexual).
  • Assessment of phenotypic plasticity in response to environmental factors.

Main Results:

  • Neogloboquadrina pachyderma reproduces both sexually and asexually.
  • Demonstrated extensive phenotypic plasticity in response to nonheritable environmental factors.
  • These mechanisms explain rapid population responses and species ubiquity.

Conclusions:

  • Sexual and asexual reproduction, coupled with phenotypic plasticity, are key to planktic foraminifera's ecological success.
  • These processes enable rapid adaptation to changing oceanic conditions.
  • Understanding these life history traits is vital for marine ecosystem and carbon cycle research.