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#bivalve

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Kenneth De Baets

#Automatic identification and morphological comparison of #bivalve and #brachiopod #fossils based on #deeplearning peerj.com/articles/16200/ via @PeerJ doi.org/10.7717/peerj.16200 #Palaeontology #paleobiology #paleontology #EvolutionaryBiology #Taxonomy

PeerJAutomatic identification and morphological comparison of bivalve and brachiopod fossils based on deep learningFossil identification is an essential and fundamental task for conducting palaeontological research. Because the manual identification of fossils requires extensive experience and is time-consuming, automatic identification methods are proposed. However, these studies are limited to a few or dozens of species, which is hardly adequate for the needs of research. This study enabled the automatic identification of hundreds of species based on a newly established fossil dataset. An available “bivalve and brachiopod fossil image dataset” (BBFID, containing >16,000 “image-label” data pairs, taxonomic determination completed) was created. The bivalves and brachiopods contained in BBFID are closely related in morphology, ecology and evolution that have long attracted the interest of researchers. We achieved >80% identification accuracy at 22 genera and ∼64% accuracy at 343 species using EfficientNetV2s architecture. The intermediate output of the model was extracted and downscaled to obtain the morphological feature space of fossils using t-distributed stochastic neighbor embedding (t-SNE). We found a distinctive boundary between the morphological feature points of bivalves and brachiopods in fossil morphological feature distribution maps. This study provides a possible method for studying the morphological evolution of fossil clades using computer vision in the future.
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TedG
Iceland scallop (Chlamys islandica)
Day 27 of #invertober #invertober2023
Icelandic scallops have separate sexes from birth, whereas most scallop species are hermaphrodites. Reproduction is by broadcast spawning in June and July. After 6-10 weeks of floating as planktonic life, the larvae settle to hard sand and gravel surfaces. The species is extremely temperature sensitive, with both high and low temperature limits. As the sea surface and bottom temperatures change, the stock densities and distribution of the scallop change as well.
#bivalve #scallop #sealife #marinebiology #invertebrates #marineinvertebrates
#marineinvertebrates
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Lukas VFN 🇪🇺

More than 800 human-harvested #shellfish species tend to be more resistant to extinction phys.org/news/2023-08-human-ha

Diversity, distribution and intrinsic extinction vulnerability of exploited marine #bivalves nature.com/articles/s41467-023

"#scientists drastically expanded the list of #bivalve species that humans are known to harvest and identified the traits that make them prime targets... some of these same traits have also made this group of shellfish less prone to #extinction"

an artistic photo (still life) of many different bivalve shells on a table
Public
elizabethbeston

You are watching a baby bivalve (possibly a mussel) BREATHING!! The gills inside this animal have cilia - beating furiously and drawing nutrient and oxygen rich water into the body for gas exchange and nutrient extraction. AND WE’RE WATCHING IT HAPPEN!

#marinebiology #marinebiologyuk #northnorfolkcoast #northsea #sea #ocean #biology #bivalve #rockpool #wildlife #nature #microscopy #microorganism #westruntonrockpools

youtu.be/ssmolhSkRHs

YouTubeBaby bivalve!By Intertidal UK
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