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  • January 27, 2017
  • 09:38 AM
  • 63 views

Does fishing influence how sensitive fish stocks are to climate?

by sceintists from the Marine group at CEES in Marine Science blog

High fishing pressure tends to lead to proportionally fewer old and large individuals in fish stocks. It is feared that these demographic changes make the fish stocks more sensitive to climate variability and change. Statistical analysis of long-term survey data on cod eggs throws new light on the possible mechanisms.



... Read more »

Stige, L., Yaragina, N., Langangen, Ø., Bogstad, B., Stenseth, N., & Ottersen, G. (2017) Effect of a fish stock's demographic structure on offspring survival and sensitivity to climate. Proceedings of the National Academy of Sciences, 201621040. DOI: 10.1073/pnas.1621040114  

  • April 15, 2016
  • 07:31 AM
  • 549 views

Size matters: age and telomeres

by sceintists from the Marine group at CEES in Marine Science blog




Growing evidence suggests that the telomeres’ length (a non-coding DNA sequence localized at the end of the chromosomes) is related to individual breeding performances and survival rates in several species.

... Read more »

  • March 6, 2016
  • 01:07 PM
  • 398 views

The hand of Code: Developmental transcriptomics in haddock

by scientists from the Marine group at CEES in Marine Science blog

The development of haddock embryos is highly impacted by oil exposure as discussed in a previous post. In a new study Sørhus et al. explored the link between transcriptional changes and developmental processes such as pattern formation and organogenesis. The question is to understand the abnormal development in fish.

... Read more »

  • December 2, 2015
  • 08:30 AM
  • 917 views

Enrichment for Goldfish

by CAPB in Companion Animal Psychology Blog

What keeps goldfish happy in their tank – and how do we know?You’ve heard about the importance of enrichment for companion animals (like dogs) and for zoo animals, but what about goldfish? Fish are the third most popular pet - kept by 12.3 million households in the US - so it’s an important topic for animal welfare. Different types of fish might have different preferences. A new study by Miriam Sullivan (University of Western Australia) et al investigates.Enrichment “is particularly impo........ Read more »

  • September 24, 2015
  • 02:38 AM
  • 554 views

Oil droplet pollution and marine fish embryos development

by sceintists from the Marine group at CEES in Marine Science blog




The toxicity resulting from exposure to oil droplets in marine fish embryos and larvae is still subject for debate while at the same time worldwide energy demands have resulted in increased hydrocarbon extraction activity.

... Read more »

Sørhus, E., Edvardsen, R., Karlsen, Ø., Nordtug, T., van der Meeren, T., Thorsen, A., Harman, C., Jentoft, S., & Meier, S. (2015) Unexpected Interaction with Dispersed Crude Oil Droplets Drives Severe Toxicity in Atlantic Haddock Embryos. PLOS ONE, 10(4). DOI: 10.1371/journal.pone.0124376  

  • August 19, 2015
  • 08:30 AM
  • 853 views

The Beneficial Effects of Watching Fish

by CAPB in Companion Animal Psychology Blog

Spending time observing an aquarium leads to improvements in mood and reductions in heart rate.There are psychological benefits to watching fish and crustaceans in an aquarium, according to a new study by Deborah Cracknell et al. They observed people’s natural interactions with a marine life display, and took heart rate, blood pressure and questionnaire results from 84 experimental participants. But the display wasn’t a fish tank that you could fit in your living room – it was a large exhi........ Read more »

  • May 17, 2015
  • 06:56 AM
  • 95 views

Opah (Lampris Guttatus): First Fully Warm-Blooded Fish

by beredim in Strange Animals



Biologist Nick Wegner holds an opah caught
during a research survey off the California Coast.
Credit: NOAA Fisheries

New research by NOAA Fisheries* has revealed the opah (Lampris Guttatus) to be the first fully warm-blooded fish. Also known as moonfish, it circulates heated blood throughout its body much like mammals and birds do, giving it a competitive advantage in the cold ocean depths.

... Read more »

  • April 23, 2015
  • 03:17 PM
  • 575 views

Changes in ecological baselines can be notably amplified when translated into socio-economics

by sceintists from the Marine group at CEES in Marine Science blog




In this study we assessed the chances of recovery of the Baltic Sea cod stock and conclude that it will never come back to the status it had more than three decades ago and that the economic losses associated to this new baseline amount to 120 million euros per year.

... Read more »

Blenckner, T., Llope, M., Mollmann, C., Voss, R., Quaas, M., Casini, M., Lindegren, M., Folke, C., & Chr. Stenseth, N. (2015) Climate and fishing steer ecosystem regeneration to uncertain economic futures. Proceedings of the Royal Society B: Biological Sciences, 282(1803), 20142809-20142809. DOI: 10.1098/rspb.2014.2809  

  • April 4, 2015
  • 03:02 PM
  • 1,245 views

5 Weird Animals Described in 2014

by beredim in Strange Animals

From pink blind fish to mushroom shaped animals to flic-flac jumping spiders, here is a pick of the weirdest animals described in 2014.






1. Hoosier cavefish (Amblyopsis hoosieri)





A live specimen of A. hoosieri, measuring 6.07 cm (2.39 in) long.


The Hoosier cavefish (Amblyopsis hoosieri) is a subterranean blind fish from southern Indiana, U.S.

First discovered during a 2013 study on ... Read more »

  • March 25, 2015
  • 08:52 AM
  • 691 views

A world-wide evaluation of the use of environmental information in tactical fisheries management

by sceintists from the Marine group at CEES in Marine Science blog




The Ecosystem Approach to Fisheries Management has for many years been presented as the way to go to ensure fish stock productivity and has been adopted by many governments and international organizations. But to which extent has ecosystem information in fact been included in tactical fisheries management practice?

... Read more »

Skern-Mauritzen, M., Ottersen, G., Handegard, N., Huse, G., Dingsør, G., Stenseth, N., & Kjesbu, O. (2015) Ecosystem processes are rarely included in tactical fisheries management. Fish and Fisheries. DOI: 10.1111/faf.12111  

Vert-pre, K., Amoroso, R., Jensen, O., & Hilborn, R. (2013) Frequency and intensity of productivity regime shifts in marine fish stocks. Proceedings of the National Academy of Sciences, 110(5), 1779-1784. DOI: 10.1073/pnas.1214879110  

  • February 18, 2015
  • 08:30 AM
  • 1,843 views

What Do Young Children Learn From Pets?

by CAPB in Companion Animal Psychology Blog

Is a better understanding of biology something children can learn from dogs and cats?Young children are very interested in animals. One study even found children aged 11 – 40 months would prefer to look at an animal behind a glass screen (even if the animal is fast asleep) rather than play with a toy (LoBue et al 2013). Now researchers are asking whether this interest in animals means that children with a cat or dog know more about biology than those without.The study, by Megan Geerdts (Univer........ Read more »

  • December 3, 2014
  • 10:07 AM
  • 797 views

The question to be on time

by sceintists from the Marine group at CEES in Marine Science blog




Climate change is thought to change many aspects of the marine life. Among others, one can mention changes in species distribution (immigration of species; new species coming to northern areas), the rate of development (warmer the temperature, the faster is the development), and change in the timing of the reproduction. The latter has recently caught a lot of attention around a nearly 50 years old hypothesis of the British fisheries biologist David Cushing.

... Read more »

Durant, J., Hjermann, D., Falkenhaug, T., Gifford, D., Naustvoll, L., Sullivan, B., Beaugrand, G., & Stenseth, N. (2013) Extension of the match-mismatch hypothesis to predator-controlled systems. Marine Ecology Progress Series, 43-52. DOI: 10.3354/meps10089  

  • November 21, 2014
  • 03:01 AM
  • 813 views

Response of trophic relationships to climate change in Sub-Arctic Seas

by sceintists from the Marine group at CEES in Marine Science blog




Understanding the drivers that determine the productivity of marine ecosystems is an important issue. Climate and exploitation interact in their effects, such that climate alterations may cause failure in a fishery management scheme while fisheries may disrupt the ability of a population to withstand, or adjust to, climate changes.

... Read more »

Durant, J., Ottersen, G., & Stenseth, N. (2013) Harvested fish stocks in a changing environment. Marine Ecology Progress Series, 199-203. DOI: 10.3354/meps10314  

Durant, J., Hidalgo, M., Rouyer, T., Hjermann, D., Ciannelli, L., Eikeset, A., Yaragina, N., & Stenseth, N. (2013) Population growth across heterogeneous environments: effects of harvesting and age structure. Marine Ecology Progress Series, 277-287. DOI: 10.3354/meps10308  

Stige, L., Hunsicker, M., Bailey, K., Yaragina, N., & Hunt GL, J. (2013) Predicting fish recruitment from juvenile abundance and environmental indices. Marine Ecology Progress Series, 245-261. DOI: 10.3354/meps10246  

  • August 1, 2014
  • 03:11 AM
  • 1,574 views

Floating Fried Eggs

by beredim in Strange Animals

Fried Egg JellyfishCotylorhiza tuberculataThe common name says it all. This weird-looking jellyfish literally looks like a fried egg! Scientifically known as Cotylorhiza tuberculata, it is one of the two jellyfish species that resemble a fried egg. The other one is Phacellophora camtschatica. Not surprisingly, it also goes by the same name.They may look tasty, but you probably don't want to have one for breakfast! However, you can have a lot of fun with C. tuberculata. This jellyfish has a ........ Read more »

  • May 13, 2014
  • 02:33 PM
  • 1,903 views

Yellow boxfish - Cute little swimming cubes

by beredim in Strange Animals

Juvenile Yellow BoxfishKingdom: AnimaliaPhylum: ChordataClass: ActinopterygiiOrder: TetraodontiformesFamily: OstraciidaeGenus: OstracionSpecies: Ostracion cubicusConservation Status: Not assessed, not believed to be threatenedCommon Name: Yellow boxfish, Cubicus Boxfish, Polka-dot BoxfishToday's post is about a fish that can only be described as astonishingly cute. It's commonly known as the Yellow boxfish and can be found in reefs throughout the Pacific Ocean and Indian Ocea........ Read more »

  • August 1, 2013
  • 05:08 PM
  • 1,112 views

Heavy Metals in Fish: Toxicity and Tolerance

by Melissa Chernick in Science Storiented

Today I found an interesting paper that fits right in to my new job in the field of aquatic ecotoxicology. As the name suggests, this field is a combination of ecology and toxicology that deals with the nature, effects, and interactions of harmful substances in the environment. In my case, it is aquatic, freshwater systems in particular. The paper I came across looks at the effects of metal contamination and tolerance in freshwater fish.Metal contamination is something that occurs worldwide. A n........ Read more »

  • July 5, 2013
  • 09:13 PM
  • 1,678 views

In ecology news: bicentenarian rockfish, floating tuna attractors, death tangles for silky sharks

by Liza Lester in EcoTone

THIS STORY about a man and fish (a shortraker rockfish, Sebastes borealis) started as a little local news spot in the Daily Sitka Sentinel in late June – man catches record-breaking 39.08-pound rockfish! Could be 200 years old!... Read more »

ohn David Filmalter, Manuela Capello, Jean-Louis Deneubourg, Paul Denfer Cowley, & Laurent Dagorn. (2013) Looking behind the curtain: quantifying massive shark mortality in fish aggregating devices. Frontiers in Ecology and the Environment, 11(e-View online ahead of print). DOI: 10.1890/130045  

  • July 3, 2013
  • 08:30 AM
  • 2,749 views

What Pets Do Children Have, And Which Do They Prefer?

by CAPB in Companion Animal Psychology Blog

Some people have wonderful memories of the pets they had as a child, running through meadows with the dog or playing dress-up with the cat. Others never particularly cared for the animal or spent time with it. Why do some people have such apparently idyllic relationships with their childhood pets, while others don’t?A fascinating new study led by Dr. Carri Westgarth of the University of Liverpool investigates pet ownership amongst 9 and 10 year old children. The study took part in a deprived a........ Read more »

Lobue V, Bloom Pickard M, Sherman K, Axford C, & DeLoache JS. (2013) Young children's interest in live animals. The British journal of developmental psychology, 31(Pt 1), 57-69. PMID: 23331106  

Westgarth C, Boddy LM, Stratton G, German AJ, Gaskell RM, Coyne KP, Bundred P, McCune S, & Dawson S. (2013) Pet ownership, dog types and attachment to pets in 9-10 year old children in Liverpool, UK. BMC veterinary research, 102. PMID: 23668544  

  • February 6, 2013
  • 10:00 AM
  • 2,460 views

Are young children more interested in animals than toys?

by CAPB in Companion Animal Psychology Blog

At what age do children develop a fascination with animals? A brand new paper by Vanessa LoBue et al investigates young children’s interest in live animals. A set of three studies looked at young children in a naturalistic play environment in which they could choose to interact with animals or toys.The animals were always in an enclosure, so the children could only look at them and not physically touch them. One obvious difference between animals and toys is that the animals move. It woul........ Read more »

LoBue, V., Bloom Pickard, M., Sherman, K., Axford, C., & DeLoache, J. (2013) Young children's interest in live animals. British Journal of Developmental Psychology, 31(1), 57-69. DOI: 10.1111/j.2044-835X.2012.02078.x  

  • March 6, 2012
  • 02:37 PM
  • 1,752 views

Search and Destroy: Sawfish are handier with their blades than previously thought

by Matt Soniak in mattsoniak.com

With their long, serrated snouts, the sawfish might strike you as a little like aquatic versions of Leatherface. Scientists used to think the two were behaviorally comparable: sluggish and maybe a little dimwitted, just waving their saw around blindly and waiting for something to run into it. New research by Barbara Wueringer and colleagues from [...]... Read more »

Barbara E. Wueringer, Lyle Squire, Stephen M. Kajiura, Nathan S. Hart, & Shaun P. Collin. (2012) The function of the sawfish's saw . Current Biology, 22(5), 150-151. info:/10.1016/j.cub.2012.01.055

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