Posts Tagged 'marine biology'

Leptocephalus, The Transparent Eel Larva

Credit: Mie Prefecture Fisheries Research Institute

The marine eels and other members of the Superorder Elopomorpha have a leptocephalus larval stage, which are flat and transparent. This group is quite diverse, containing 801 species in 24 orders, 24 families and 156 genera. They arose in the Cretaceous period 140 million years ago.

Read more @ SciTechDaily

Sequencing of Comb Jellies’ DNA Reveals that they Preceded Sponges

tasmanian-comb-jelly

Genome-sequencing data indicates that sponges were preceded by ctenophores, complex marine predators also called comb jellies.

Read more @ SciTechDaily

Nopili Goby, The Waterfall Climbing Fish

Nopili Goby, The Waterfall-Jumping Fish

When the Nopili goby (Sicyopterus stimpsoni) moves from salt water to fresh water, over the course of two days, the fish’s mouth migrates from the tip of its head to its chin. This lets it adapt to its new environment.

Read more @ SciTechDaily

Comb Jellies Have Proteins to Generate & Sense Light

Comb Jelly Genome

Comb jellies, known as the phylum Ctenophora, live in marine waters worldwide. They have a distinctive feature in their groups of cilia, which they use to swim. They are the largest animals that use cilia as a means to swim. Adults range from a few millimeters in length to 1.5 meters.

Read more @ SciTechDaily

Toxic Algal Blooms Could be Boosted by Climate Change

Pseudo-nitzschia is among the species that produce toxins and cause harmful algal blooms. Credit: Courtesy of Raphael Kudela, UCSC

Physical and chemical conditions in the oceans cause populations of algae to wax and wane in cycles. Harmful algae consist of only a few species of diatoms, dinoflagellates, and cyanobacteria. Researchers are wondering what the role of climate change is in the algal blooms that have been seen in the last years.

Read more @ SciTechDaily

Invasive Species King Crabs Could Wipe Out Antarctic Ecosystems

N-yaldwyni-Palmer-Deep-Katrien-Heirman

Colder temperatures have kept crabs out of Antarctic seas for 30 million years, but warmer waters from the ocean depths are now intruding onto the continental shelf, and this seems to be changing the delicate ecological balance.

Read more @ SciTechDaily

Homosexual Behavior Among Fish Increases Attractiveness to Females

homosexual-fish-mollies

In many species, females are attracted to large, conspicuous males. But among animals that mate with many partners, males that manage to mate with more than one female can increases their chances of attracting others, even if they aren’t as conspicuous.

Read more @ SciTechDaily


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