Estivation & Rain

Post your identification, classification, and natural history questions and field reports here.

Estivation & Rain

Postby Tortoise Trust » Wed Jul 10, 2013 8:53 am

As we have now seen multiple times, estivating tortoises will emerge during rain. Rain and access to water is clearly the primary factor - not temperature, or food. Water. The heavy rain during the night again caused tortoises to emerge... including (again) nocturnal activity.

Still up this morning:

Image
Tortoise Trust
 
Posts: 8866
Joined: Thu Mar 12, 2009 6:07 pm
Location: Almeria, Spain

Re: Estivation & Rain

Postby FLINTUS » Wed Jul 10, 2013 2:02 pm

Never heard of estivation, is it another way of saying aestivation?
2.2 Red Foots
1.0 Golden Retriever
1.1 Lop-eared rabbits
0.1 Cat
0.0.5 Goldfish
0.0.3 Jadatzi GALS
1.2 Serrated/Forest Hingebacks(Kinixys Erosa)
FLINTUS
 
Posts: 165
Joined: Thu Dec 27, 2012 9:55 pm

Re: Estivation & Rain

Postby Stuart » Wed Jul 10, 2013 5:48 pm

FLINTUS wrote:Never heard of estivation, is it another way of saying aestivation?


More of way of spelling aestivation - they're probably said the same way.
American spelling, which usually simplifies the complexities of traditional English spelling, but in so doing sometimes loses the connection with the Latin roots of so many of our words.

Aestivation or æstivation (from Latin: aestas, summer, but also spelled "estivation" in American English) is a state of animal dormancy, similar to hibernation, characterized by inactivity and a lowered metabolic rate, that is entered in response to high temperatures and arid conditions.[1] It takes place during times of heat and dryness, the hot dry season, which are often the summer months.

Invertebrate and vertebrate animals are known to enter this state to avoid damage from high temperatures and the risk of desiccation. Both terrestrial and aquatic animals undergo aestivation.
- Wikipedia (that "reliable" source of all knowledge :lol: )
Stuart
Hermanns (old female and 5 home-bred offspring), iberas (two), kbn (rescue), leopard, horsfield (rescue), stars (2 - long term loan), red-eared sliders (5)
Stuart
Wiki Editor
Wiki Editor
 
Posts: 2153
Joined: Tue Apr 14, 2009 11:43 pm

Re: Estivation & Rain

Postby FLINTUS » Wed Jul 10, 2013 8:10 pm

Thanks for clarifying that ;). Nothing wrong with a bit of wiki now and again lol.
2.2 Red Foots
1.0 Golden Retriever
1.1 Lop-eared rabbits
0.1 Cat
0.0.5 Goldfish
0.0.3 Jadatzi GALS
1.2 Serrated/Forest Hingebacks(Kinixys Erosa)
FLINTUS
 
Posts: 165
Joined: Thu Dec 27, 2012 9:55 pm

Re: Estivation & Rain

Postby Tortoise Trust » Thu Jul 11, 2013 3:12 am

As I write for many publications in both British and US English I tend to use either set of spellings interchangeably. I learned the hard way. I once had to go through 30,000 words adding extra commas all over the place, and changing every instance of "ise" to "ize". Of course, we're a multilingual household here anyway... American and British! :lol:

They are both correct. Both mean exactly the the same thing.
Tortoise Trust
 
Posts: 8866
Joined: Thu Mar 12, 2009 6:07 pm
Location: Almeria, Spain

Re: Estivation & Rain

Postby Tortoise Trust » Tue Aug 06, 2013 4:59 pm

First rain since July 10. Zero tortoise activity since.

Today... major rainstorm! Beautiful!

100% of monitored tortoises active again!

We now have 4 years worth of data on this. Correlating behaviour with climatic conditions, and feel very confident we can finally answer some of the questions about estivation (or aestivation, if you prefer) in tortoises with confidence. Is it food availability? Temperatures? Water? We will publish full results in due course, but for now, 4 years hard work, out in all weathers has paid off. Certainly by late September we should have the final data...

Very happy here. This is why extended fieldwork is so valuable. There is only one way to get data like this. Be there at the right time.
Tortoise Trust
 
Posts: 8866
Joined: Thu Mar 12, 2009 6:07 pm
Location: Almeria, Spain

Re: Estivation & Rain

Postby FLINTUS » Tue Aug 06, 2013 5:23 pm

Excellent. Loads of us have observed them being more active after rain-especially in mating-but we have no hard evidence to prove it.
2.2 Red Foots
1.0 Golden Retriever
1.1 Lop-eared rabbits
0.1 Cat
0.0.5 Goldfish
0.0.3 Jadatzi GALS
1.2 Serrated/Forest Hingebacks(Kinixys Erosa)
FLINTUS
 
Posts: 165
Joined: Thu Dec 27, 2012 9:55 pm

Re: Estivation & Rain

Postby Tortoise Trust » Tue Aug 06, 2013 5:40 pm

Yes, saw two mating. Interestingly, less than 1 hour after rain ended - they are going down again. But obviously did drink, and did get rid of urates....

Fascinating stuff.
Tortoise Trust
 
Posts: 8866
Joined: Thu Mar 12, 2009 6:07 pm
Location: Almeria, Spain

Re: Estivation & Rain

Postby FLINTUS » Tue Aug 06, 2013 9:10 pm

And of course most species hatch during the wet season-if there is one in that locality. Could you do a full scale controlled steady of it, at least on TGG?
2.2 Red Foots
1.0 Golden Retriever
1.1 Lop-eared rabbits
0.1 Cat
0.0.5 Goldfish
0.0.3 Jadatzi GALS
1.2 Serrated/Forest Hingebacks(Kinixys Erosa)
FLINTUS
 
Posts: 165
Joined: Thu Dec 27, 2012 9:55 pm

Re: Estivation & Rain

Postby Tortoise Trust » Tue Aug 06, 2013 11:19 pm

We have done.

I addition to the wild observations.
Tortoise Trust
 
Posts: 8866
Joined: Thu Mar 12, 2009 6:07 pm
Location: Almeria, Spain

Next

Return to Taxonomy, Identification and Natural History

Who is online

Users browsing this forum: No registered users and 1 guest

cron