Caribbean Reef Squid Sepioteuthis sepioidea


Southern Calamari Squid – Sepioteuthis australis #marineexplorer by John Turnbull
Via Flickr:
Bicheno, Tasmania

anonymous asked:

Hey, you and your blog are super rad and you should be proud of yourself. I have two questions: what do you think is the prettiest species of cephalopod? Also, what do you think is the weirdest evolutionary trait of any squid/cuttlefish/octopus/etc?

Prettiest is probably Sepioteuthis lessoniana, I really want to get a tattoo of those squid.

Weirdest evolutionary trait, is probably that passing cloud thing cuttlefish do. I mean…that stuff is really impressive and also VERY weird.

Originally posted by montereybayaquarium

But then there’s this OTHER thing, octopuses can move along the seafloor along with the motion of the waves, sort of with the ripples of light that are created on the bottom. I looked for a video of it but maybe it hasn’t been published yet? I’m not sure. It’s super cool though, they camouflage then move incrementally along the seafloor it’s very impressive.


Southern calamari - Sepioteuthis australis #marineexplorer by John Turnbull
Via Flickr:
Fairy Bower

anonymous asked:

Why aren't ethograms used in animal behavior studies anymore?

Not sure what type of studies you’re thinking of, but ethograms (a list used to categorize, name and describe specific behaviors of interest) are often used in animal behavior research. 

Ethograms allow for the objective classification of behaviors and enable Ethologists / Behaviorists to measure the frequency, duration, and orientation (social context) of these interest behaviors. Ethograms may not always be included in the study’s publication, but that’s more a result of space limitations for print journals than anything else. Even so you’ll often find the ethogram(s) used in a particular study included as:

1. A reference- the researchers are using the same ethogram as an already published study or technical report (e.g. “behavior was scored as…. [Crockett et al., 1995]”) (x
2. A table - typically this is a partial ethogram which only includes the behaviors most relevant to the study (x)

3. A diagram - because pictures / drawings make everything easier (x)

4. The appendix / supplemental materials - aka. This table is too big so we stuck it at the end) (x

Ethograms are a fundamental tool of Ethologists / Behaviorists. But just like any other tool, they’re only as good as the researcher using them. Distinct terms, clear definitions, and species / study topic relevance are of the utmost importance. 

Journal Sources (from the examples above plus a few extras):  

Crockett, Carolyn M., Mika Shimoji, and Douglas M. Bowden. “Behavior, appetite, and urinary cortisol responses by adult female pigtailed macaques to cage size, cage level, room change, and ketamine sedation.” American Journal of Primatology 52.2 (2000): 63-80. (x)

Genty, Emilie, and Klaus Zuberbühler. “Spatial reference in a bonobo gesture.”Current Biology 24.14 (2014): 1601-1605. (x)

Gottlieb, Daniel H., Kristine Coleman, and Brenda McCowan. “The effects of predictability in daily husbandry routines on captive rhesus macaques (Macaca mulatta).” Applied animal behaviour science 143.2 (2013): 117-127. (x)

Gottlieb, Daniel H., et al. “Efficacy of 3 types of foraging enrichment for rhesus macaques (Macaca mulatta).” Journal of the American Association for Laboratory Animal Science: JAALAS 50.6 (2011): 888. (x)

Jantzen, Troy M., and Jon N. Havenhand. “Reproductive behavior in the squid Sepioteuthis australis from South Australia: ethogram of reproductive body patterns.” The Biological Bulletin 204.3 (2003): 290-304. (x)

Nishida, Toshisada, et al. “Ethogram and Ethnography of Mahale Chimpanzees.” Anthropological Science 107.2 (1999): 141-188. (x)

Ransom, Jason I., and Brian S. Cade. “Quantifying Equid Behavior–A Research Ethogram for Free-Roaming Feral Horses.” Publications of the US Geological Survey (2009): 26. (x)

Regan, Fran H., et al. “Behavioural repertoire of working donkeys and consistency of behaviour over time, as a preliminary step towards identifying pain-related behaviours.” PloS one 9.7 (2014): e101877. (x)

Senter, Phil, Shannon M. Harris, and Danielle L. Kent. “Phylogeny of Courtship and Male-Male Combat Behavior in Snakes.” (2014): e107528. (x)

goldenbonnies  asked:

If squids and octopi and cuttlefish became bipedal like humans, would their siphon be on the back of their head, or the back of where a torso would be? Thank you, and I love your blog!

Octopus:  would switch between Bellybutton region and lower back depending on whether they were going forward or backward

Some squid, like dosidicus or the bigfin squid: Siphon would be where your butt is I think?

Sepioteuthis, bobtail squid, cuttlefish: This would be a mess, these really shouldn’t become bipedal it’d be like walking with your ears, their little faces would be on the ground and their mantles would be in the air…just… nonsensical.

Exception: Flamboyant cuttlefish: Two feets would be those little feets they have under their mantle. They’d really be the only decapod cephalopod that could pull this one off. 

Originally posted by aurlthatisnotclaimed

Unless you mean this is a total redesign of cephalopod body plan… then like.. man… I guess also where your butt is so they could scoot along with little jumps? 

This has been a challenging question!

casthekat  asked:

Hello! So your post about baby squids being brave/shy during checkups came across my dashboard and 1) they're absolutely adorable, 2) I didn't know that baby squid look like little cuttlefish, so cute! And just because they remind me of cuttlefish, I have a (probably dumb) question: how does someone tell the difference between a baby squid and cuttlefish? Is there a basic visual giveaway that the trained eye can pick up on, or is it something you need special equipment to see? Thanks!

These squid look pretty much the same from the day they come out of the egg to adulthood, so the cuttlefish-like appearance never really goes away!  Bobtail squid are actually sort of their own thing in terms of classification. There are the “true squid” which are the kind of squid you get in calamari (the long skinny bodied squid), cuttlefish which all have a cuttlebone, and then you have these sort of in-between species, and the bobtail squid all fall there. A couple ways to positively ID a cuttlefish is the rigid body shape that’s sort of almond-shaped with a fin that goes all the way around, and the W-shaped pupil. Their arms are also a bit different rom bobtails and they have a robust ability to change their skin texture which bobtail squid certainly can not. The squid you saw in the post was literally sticking rocks to her skin, not mimicking rocks, but a cuttlefish could whip up camouflage that complex just with its skin.  Bobtail squid also have those two little flappy fins and cuttlefish fins just look different.  The other species you might confuse with cuttlefish are sepioteuthis squid (e.g. sepioteuthis lessoniana) which also have a fin that goes all the way around but their bodies are much longer and faces are much more squid-like than cuttlefish-like.  Hope that helps!

randomdorkgirl  asked:

I want to get a squid tattoo going almost all the way up my leg but if like it to be accurate because other wise it will bug me. What squid would you recommend for that size or at least that sort of ratio?

I’m so glad you asked me this question. I think the correct choice is the Bigfin Reef Squid (Sepioteuthis lessoniana).  They’re plenty big (like a foot long), and gorgeous. So beautiful. 

UNLESS you wanted a squid on your thigh with tentacles going down, then I guess… I don’t know i suppose Humboldt squid (Dosiducus gigas) would be large enough for that, and certainly a badass. and even though many of them grow way larger than human leg-size, some smaller ones would be that size.

Watch on

Shane Siers shot this short but amazing video of a brave little Reef Squid hatchling (Sepioteuthis) doing its best to look tough. Even teeny tiny tentacles are awesome.

“This little creature was less then 30mm long, but still managed to make himself look threatening! Couldn’t have been more than a few days old. Watch how the chromatophores, the pigment cells, expand and contract to change the color of the squid…fantastic!”