Bergmann's rule is an ecogeographic principle that states that within a broadly distributed taxonomic clade, populations and species of larger size are found in colder environments, and species of smaller size are found in warmer regions. Although originally formulated in terms of species within a genus, it has often been recast in terms of populations within a species. It is also often cast in terms of latitude.
The rule is named after nineteenth century German biologist Carl Bergmann, who described the pattern in 1847, although he was not the first to notice it. Bergmann's rule is most often applied to mammals and birds which are endotherms, but some researchers have also found evidence for the rule in studies of ectothermic species such as the ant Leptothorax acervorum. While Bergmann's rule appears to hold true for many mammals and birds, there are exceptions.
There seems to be a tendency for larger-bodied animals to conform more closely than smaller-bodied animals, at least up to certain latitudes, perhaps reflecting a reduced ability to avoid stressful environments by burrowing or other means. In addition to being a general pattern across space, Bergmann’s rule has been reported in populations over historical and evolutionary time when exposed to varying thermal regimes. In particular, reversible dwarfing of mammals has been noted during two relatively brief upward excursions in temperature during the Paleogene: the Paleocene-Eocene thermal maximum and the Eocene Thermal Maximum 2.
Bergmann´s rule and Allen´s rule are probably familiar. Both of these ecological rules describe adaptations of mammals and birds to cold or warm environments.
References:
1 Sadava, D. E., Hillis, D. M., & Heller, H. C. (2009). Life: the science of biology (Vol. 2). Macmillan.
2 https://www.sciencedirect.com/topics/earth-and-planetary-sciences/bergmann-rule
3 https://hfmoconservationandscience.weebly.com/ecological-rules-and-processes/allens-rule
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0:00 Intro
0:28 Bergmann's Rule
2:16 Allen's Rule
#ecology #adaptations #zoology
published: 20 Feb 2023
Bergmann's rule and Allen's rule
This lecture explains about the Bergmann's rule and Allen's rule for the worm blooded and cold blooded animals with their body size.
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published: 01 Apr 2015
60 Second Zoology - Snow Hares And Bergmann's Rule
Snow hares are a great study subject for scientists interested in geographical variation among members of the same species - Karl Bergmann proposed a pretty cool theory which scientists tested out in the 1970s.
published: 01 Mar 2023
BERGMANN'S RULE EXPLAINED | CARL BERGMANN | EXAMPLES OF BERGMANN'S RULE | ECOGEOGRAPHICAL RULE
BERGMANN'S RULE IS ONE OF THE MOST IMPORTANT CONCEPTS IN ECOLOGY. STUDENTS OF LIFE SCIENCE MUST NEED TO UNDERSTAND THIS CONCEPT FOR ANSWERING SUCH QUESTIONS IN COMPETITIVE AND ACADEMIC EXAMS. THE VIDEO IS SMALL AND EXPLAINS THE EXACT CONCEPT USING EXAMPLES.
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published: 19 Jan 2023
Allen's and Bergmann's Rule || Simple Explanation
Allen's and Bergmann's Rule ||
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published: 28 Apr 2023
Relationship between Temperature & Body Size I Ecology- Bergmann Allen Hesse's rule I CSIRNET NEET
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published: 15 Dec 2022
Bergmann's Rule | CSIR NET| ECOLOGY
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Bergmann’s rule- populations and species of larger size are found in colder environments, and species of smaller size are found in warmer regions.
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Happy Earth day everyone! In honour of today, I decided to explain a topic related to our animals and the earth. This video describes the ecogeographic rules, Bergmann, Gogler, and Allen, and how geographic location and conditions affect appearance and physiology of animal species.
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published: 22 Apr 2021
#1 BERGMAN RULE
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Bergmann´s rule and Allen´s rule are probably familiar. Both of these ecological rules describe adaptations of mammals and birds to cold or warm environments.
...
Bergmann´s rule and Allen´s rule are probably familiar. Both of these ecological rules describe adaptations of mammals and birds to cold or warm environments.
References:
1 Sadava, D. E., Hillis, D. M., & Heller, H. C. (2009). Life: the science of biology (Vol. 2). Macmillan.
2 https://www.sciencedirect.com/topics/earth-and-planetary-sciences/bergmann-rule
3 https://hfmoconservationandscience.weebly.com/ecological-rules-and-processes/allens-rule
Social Media:
Follow me on Twitter @Henrikslab
Music:
Patrick Patrikios - Beyond (YouTube Audio Library)
https://www.youtube.com/watch?v=uQUCXPZebos
Download MP3 - https://hypeddit.com/45dz7j
0:00 Intro
0:28 Bergmann's Rule
2:16 Allen's Rule
#ecology #adaptations #zoology
Bergmann´s rule and Allen´s rule are probably familiar. Both of these ecological rules describe adaptations of mammals and birds to cold or warm environments.
References:
1 Sadava, D. E., Hillis, D. M., & Heller, H. C. (2009). Life: the science of biology (Vol. 2). Macmillan.
2 https://www.sciencedirect.com/topics/earth-and-planetary-sciences/bergmann-rule
3 https://hfmoconservationandscience.weebly.com/ecological-rules-and-processes/allens-rule
Social Media:
Follow me on Twitter @Henrikslab
Music:
Patrick Patrikios - Beyond (YouTube Audio Library)
https://www.youtube.com/watch?v=uQUCXPZebos
Download MP3 - https://hypeddit.com/45dz7j
0:00 Intro
0:28 Bergmann's Rule
2:16 Allen's Rule
#ecology #adaptations #zoology
This lecture explains about the Bergmann's rule and Allen's rule for the worm blooded and cold blooded animals with their body size.
For more information, log o...
This lecture explains about the Bergmann's rule and Allen's rule for the worm blooded and cold blooded animals with their body size.
For more information, log on to-
http://www.shomusbiology.com/
Get Shomu's Biology DVD set here-
http://www.shomusbiology.com/dvd-store/
Download the study materials here-
http://shomusbiology.com/bio-materials.html
Remember Shomu’s Biology is created to spread the knowledge of life science and biology by sharing all this free biology lectures video and animation presented by Suman Bhattacharjee in YouTube. All these tutorials are brought to you for free. Please subscribe to our channel so that we can grow together. You can check for any of the following services from Shomu’s Biology-
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This lecture explains about the Bergmann's rule and Allen's rule for the worm blooded and cold blooded animals with their body size.
For more information, log on to-
http://www.shomusbiology.com/
Get Shomu's Biology DVD set here-
http://www.shomusbiology.com/dvd-store/
Download the study materials here-
http://shomusbiology.com/bio-materials.html
Remember Shomu’s Biology is created to spread the knowledge of life science and biology by sharing all this free biology lectures video and animation presented by Suman Bhattacharjee in YouTube. All these tutorials are brought to you for free. Please subscribe to our channel so that we can grow together. You can check for any of the following services from Shomu’s Biology-
Buy Shomu’s Biology lecture DVD set- www.shomusbiology.com/dvd-store
Shomu’s Biology assignment services – www.shomusbiology.com/assignment -help
Join Online coaching for CSIR NET exam – www.shomusbiology.com/net-coaching
We are social. Find us on different sites here-
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Snow hares are a great study subject for scientists interested in geographical variation among members of the same species - Karl Bergmann proposed a pretty coo...
Snow hares are a great study subject for scientists interested in geographical variation among members of the same species - Karl Bergmann proposed a pretty cool theory which scientists tested out in the 1970s.
Snow hares are a great study subject for scientists interested in geographical variation among members of the same species - Karl Bergmann proposed a pretty cool theory which scientists tested out in the 1970s.
BERGMANN'S RULE IS ONE OF THE MOST IMPORTANT CONCEPTS IN ECOLOGY. STUDENTS OF LIFE SCIENCE MUST NEED TO UNDERSTAND THIS CONCEPT FOR ANSWERING SUCH QUESTIONS IN ...
BERGMANN'S RULE IS ONE OF THE MOST IMPORTANT CONCEPTS IN ECOLOGY. STUDENTS OF LIFE SCIENCE MUST NEED TO UNDERSTAND THIS CONCEPT FOR ANSWERING SUCH QUESTIONS IN COMPETITIVE AND ACADEMIC EXAMS. THE VIDEO IS SMALL AND EXPLAINS THE EXACT CONCEPT USING EXAMPLES.
PLEASE LIKE, SHARE AND SUBSCRIBE OUR CONTENT.
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STAY CONNECTED WITH OUR INSTAGRAM AND FACEBOOK PAGES TOO.
BERGMANN'S RULE IS ONE OF THE MOST IMPORTANT CONCEPTS IN ECOLOGY. STUDENTS OF LIFE SCIENCE MUST NEED TO UNDERSTAND THIS CONCEPT FOR ANSWERING SUCH QUESTIONS IN COMPETITIVE AND ACADEMIC EXAMS. THE VIDEO IS SMALL AND EXPLAINS THE EXACT CONCEPT USING EXAMPLES.
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TOPIC: Bergmann's Rule |CSIR NET| ECOLOGY
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Bergmann’s rule- populations and species of larger siz...
WELCOME TO TEACHING PATHSHALA!!!!
TOPIC: Bergmann's Rule |CSIR NET| ECOLOGY
#TEACHINGPATHSHALA #CSIRNET
Bergmann’s rule- populations and species of larger size are found in colder environments, and species of smaller size are found in warmer regions.
********
ABOUT THIS CHANNEL ---This channel will have the syllabus wise lectures Video for CSIR-NET-Lifescience/GATE-Lifescience/BARC/ICMR-JRF/ICAR.
******
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LIST OF IMPORTANT VIDEOS FOR CSIR NET EXAM-
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Vulva for mation in C.elegans (P-1)- https://youtu.be/ati-iJ9zWKM
Vulva for mation in C.elegans (P-2)- https://youtu.be/el2SUaJhS4o
Eye Lens Induction- https://youtu.be/FgyTxSejfaQ
Axis(A-P) formation in Drosophila- https://youtu.be/-EjT2Xe2O1A
Axis(D-V) formation in Drosophila- https://youtu.be/IMqgpbBw1qM
Segment polarity genes-
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TOPIC: Bergmann's Rule |CSIR NET| ECOLOGY
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Bergmann’s rule- populations and species of larger size are found in colder environments, and species of smaller size are found in warmer regions.
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LIST OF IMPORTANT VIDEOS FOR CSIR NET EXAM-
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Vulva for mation in C.elegans (P-1)- https://youtu.be/ati-iJ9zWKM
Vulva for mation in C.elegans (P-2)- https://youtu.be/el2SUaJhS4o
Eye Lens Induction- https://youtu.be/FgyTxSejfaQ
Axis(A-P) formation in Drosophila- https://youtu.be/-EjT2Xe2O1A
Axis(D-V) formation in Drosophila- https://youtu.be/IMqgpbBw1qM
Segment polarity genes-
****PLANT BIOLOGY-CSIR NET****
Agrobacterium transformation-https://youtu.be/9pj_SRs2z58
shoot apical meristem-https://youtu.be/Q8KIQSoUufU
Stress physiology (part-1)- https://youtu.be/YoNgSOIsk0A
Stress physiology (part-2)- https://youtu.be/BTh8THX3Bgo
Stress physiology (part-3)- https://youtu.be/66pQplA3bCQ
Stress physiology (part-4)- https://youtu.be/Rztffk3ZjCQ
Phytochrome- https://youtu.be/AkRxzA6AbJI
Cryptochrome- https://youtu.be/cOOnt_hicFU
Phototropin- https://youtu.be/GHyrQx04aCU
ABC model of flower- https://youtu.be/Opkmx8xnQ94
PHYTOHORMONES-FOR CSIR NET
Auxin transport- https://youtu.be/MqmoPt3RszY
Auxin signaling- https://youtu.be/TOx9yTJ4b5c
jasmonic acid signaling- https://youtu.be/03cduXJddnM
gibberelline signaling- https://youtu.be/qW2Pjz46LBM
cytokinin signaling- https://youtu.be/waWGWxprrDg
Ethylene signaling- https://youtu.be/0GRDQ37kDj8
ABA signaling - https://youtu.be/h4AAulVsq0A
~~Plant secondary metabolites -CSIR NET~~
PART-1- https://youtu.be/hOHyIuO20-4
PART-2- https://youtu.be/waf0bLMZ4VY
PART-3- https://youtu.be/POKieWsTVUg
PART4- https://youtu.be/9B46LTlEXBg
****ECOLOGY UNIT-CSIR NET****
Top Down control- https://youtu.be/k_tvKHkfw2M
Island Theory- https://youtu.be/kK3kNOzHxMs
Niche and character displacement- https://youtu.be/el9HXUelTEs
COMPETITIVE EXCLUSION PRINCIPLE- https://youtu.be/zV3LxYDz-qE
Eutrophication- https://youtu.be/MpRMWrWBKEc
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Happy Earth day everyone! In honour of today, I decided to explain a topic related to our animals and the earth. This video describes the ecogeographic rules, B...
Happy Earth day everyone! In honour of today, I decided to explain a topic related to our animals and the earth. This video describes the ecogeographic rules, Bergmann, Gogler, and Allen, and how geographic location and conditions affect appearance and physiology of animal species.
Check us out on social media!
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Happy Earth day everyone! In honour of today, I decided to explain a topic related to our animals and the earth. This video describes the ecogeographic rules, Bergmann, Gogler, and Allen, and how geographic location and conditions affect appearance and physiology of animal species.
Check us out on social media!
Insta: https://www.instagram.com/brainboost_edu/
Tiktok: https://www.tiktok.com/@brainbooost?lang=en
Hello All,
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Hello All,
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Bergmann´s rule and Allen´s rule are probably familiar. Both of these ecological rules describe adaptations of mammals and birds to cold or warm environments.
References:
1 Sadava, D. E., Hillis, D. M., & Heller, H. C. (2009). Life: the science of biology (Vol. 2). Macmillan.
2 https://www.sciencedirect.com/topics/earth-and-planetary-sciences/bergmann-rule
3 https://hfmoconservationandscience.weebly.com/ecological-rules-and-processes/allens-rule
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0:00 Intro
0:28 Bergmann's Rule
2:16 Allen's Rule
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This lecture explains about the Bergmann's rule and Allen's rule for the worm blooded and cold blooded animals with their body size.
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Snow hares are a great study subject for scientists interested in geographical variation among members of the same species - Karl Bergmann proposed a pretty cool theory which scientists tested out in the 1970s.
BERGMANN'S RULE IS ONE OF THE MOST IMPORTANT CONCEPTS IN ECOLOGY. STUDENTS OF LIFE SCIENCE MUST NEED TO UNDERSTAND THIS CONCEPT FOR ANSWERING SUCH QUESTIONS IN COMPETITIVE AND ACADEMIC EXAMS. THE VIDEO IS SMALL AND EXPLAINS THE EXACT CONCEPT USING EXAMPLES.
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Bergmann’s rule- populations and species of larger size are found in colder environments, and species of smaller size are found in warmer regions.
********
ABOUT THIS CHANNEL ---This channel will have the syllabus wise lectures Video for CSIR-NET-Lifescience/GATE-Lifescience/BARC/ICMR-JRF/ICAR.
******
Another channel (only in Hindi) - https://www.youtube.com/channel/UCssB_Ei9SjQn_cpeYFEbNHQ
LIST OF IMPORTANT VIDEOS FOR CSIR NET EXAM-
*****DEVELOPMENTAL BIOLOGY-CSIR NET*****
Vulva for mation in C.elegans (P-1)- https://youtu.be/ati-iJ9zWKM
Vulva for mation in C.elegans (P-2)- https://youtu.be/el2SUaJhS4o
Eye Lens Induction- https://youtu.be/FgyTxSejfaQ
Axis(A-P) formation in Drosophila- https://youtu.be/-EjT2Xe2O1A
Axis(D-V) formation in Drosophila- https://youtu.be/IMqgpbBw1qM
Segment polarity genes-
****PLANT BIOLOGY-CSIR NET****
Agrobacterium transformation-https://youtu.be/9pj_SRs2z58
shoot apical meristem-https://youtu.be/Q8KIQSoUufU
Stress physiology (part-1)- https://youtu.be/YoNgSOIsk0A
Stress physiology (part-2)- https://youtu.be/BTh8THX3Bgo
Stress physiology (part-3)- https://youtu.be/66pQplA3bCQ
Stress physiology (part-4)- https://youtu.be/Rztffk3ZjCQ
Phytochrome- https://youtu.be/AkRxzA6AbJI
Cryptochrome- https://youtu.be/cOOnt_hicFU
Phototropin- https://youtu.be/GHyrQx04aCU
ABC model of flower- https://youtu.be/Opkmx8xnQ94
PHYTOHORMONES-FOR CSIR NET
Auxin transport- https://youtu.be/MqmoPt3RszY
Auxin signaling- https://youtu.be/TOx9yTJ4b5c
jasmonic acid signaling- https://youtu.be/03cduXJddnM
gibberelline signaling- https://youtu.be/qW2Pjz46LBM
cytokinin signaling- https://youtu.be/waWGWxprrDg
Ethylene signaling- https://youtu.be/0GRDQ37kDj8
ABA signaling - https://youtu.be/h4AAulVsq0A
~~Plant secondary metabolites -CSIR NET~~
PART-1- https://youtu.be/hOHyIuO20-4
PART-2- https://youtu.be/waf0bLMZ4VY
PART-3- https://youtu.be/POKieWsTVUg
PART4- https://youtu.be/9B46LTlEXBg
****ECOLOGY UNIT-CSIR NET****
Top Down control- https://youtu.be/k_tvKHkfw2M
Island Theory- https://youtu.be/kK3kNOzHxMs
Niche and character displacement- https://youtu.be/el9HXUelTEs
COMPETITIVE EXCLUSION PRINCIPLE- https://youtu.be/zV3LxYDz-qE
Eutrophication- https://youtu.be/MpRMWrWBKEc
THANK YOU!!
KEEP SUPPORTING
Happy Earth day everyone! In honour of today, I decided to explain a topic related to our animals and the earth. This video describes the ecogeographic rules, Bergmann, Gogler, and Allen, and how geographic location and conditions affect appearance and physiology of animal species.
Check us out on social media!
Insta: https://www.instagram.com/brainboost_edu/
Tiktok: https://www.tiktok.com/@brainbooost?lang=en
Hello All,
If you are preparing for any exam related to life science and/or biology then my channel can help you a lot.
Get daily videos and many other updates regarding lifescience and other exams.
Checkout my channel and enjoy the learning.
Thank you
PLAYLISTS:-
GENETICS - https://youtube.com/playlist?list=PL0zryVDvLHpH9ZNpjUWnocJfye38Y3oGc
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Bergmann's rule is an ecogeographic principle that states that within a broadly distributed taxonomic clade, populations and species of larger size are found in colder environments, and species of smaller size are found in warmer regions. Although originally formulated in terms of species within a genus, it has often been recast in terms of populations within a species. It is also often cast in terms of latitude.
The rule is named after nineteenth century German biologist Carl Bergmann, who described the pattern in 1847, although he was not the first to notice it. Bergmann's rule is most often applied to mammals and birds which are endotherms, but some researchers have also found evidence for the rule in studies of ectothermic species such as the ant Leptothorax acervorum. While Bergmann's rule appears to hold true for many mammals and birds, there are exceptions.
There seems to be a tendency for larger-bodied animals to conform more closely than smaller-bodied animals, at least up to certain latitudes, perhaps reflecting a reduced ability to avoid stressful environments by burrowing or other means. In addition to being a general pattern across space, Bergmann’s rule has been reported in populations over historical and evolutionary time when exposed to varying thermal regimes. In particular, reversible dwarfing of mammals has been noted during two relatively brief upward excursions in temperature during the Paleogene: the Paleocene-Eocene thermal maximum and the Eocene Thermal Maximum 2.
Madison Bergmann is facing 10 felony charges for allegedly starting an inappropriate relationship with her fifth-grade student, according to NBC affiliate KARE. ... Bergmann is expected to be arraigned on Nov.
Bergmann is seen wiping her tears as her lawyer argued that her charges should be dropped ... The judge ultimately ruled that the word 'chest' does not excuse Bergmann from being charged for sexual assault.
Luke Bergmann, director of behavioral health for San Diego County, updated county supervisors at their meeting Tuesday, highlighting three projects that his department plans to submit for the first round of Prop.
Bergmann’s rule, named after the 19th-century biologist Carl Bergmann, suggests that animals in warmer climates tend to be smaller, as their larger surface area relative to the volume of their bodies helps them dissipate heat.
Correction. The April 17 story with the headline “New UAF research challenges Bergmann’s Rule” misspelled Pat Druckenmiller’s name. It has been updated online ... .
"We found that Bergmann's rule is only applicable to a subset of homeothermic animals (those that maintain stable body temperatures), and only when you consider temperature, ignoring all other climatic variables.
) Dinosaur study challenges Bergmann's rule ... question Bergmann's rule ... This suggests that Bergmann's 'rule' is really the exception rather than the rule." ... Does Bergmann's rule apply to dinosaurs?.
The author writes, “In the 19th century, the German zoologist Christian Bergmann pondered a simple question ... ‘Bergmann pointed out that smaller species tend to live in warmer climes.
why are some animals so small? His answer, that a warm-blooded animal’s size increases as its habitat cools, remains a rule in biology to this day . “Bergmann ...
"We found eight gene variations in the genomes we sequenced, all associated with body mass as predicted by Bergmann's Rule," said lead author Katherine Carbeck, a Ph.D.
Wilson’s vision that Bergmann wants Biden to emulate, however, may instead of undermining Putin’s rule make him stronger or, conversely, lead to a military coup that could end up widening and escalating the current regional war in Europe.
Bergmann's rule states that colder climates spawn bigger bodies because they help retain heat while smaller bodies help shed it ...Baldwin et al, Complementarity in Allen's and Bergmann's rules among birds, Nature Communications (2023).
An upper tooth from a megalodon (right) dwarfs that of a white shark (left) ... The findings align with a principle known as Bergmann’s rule, where animals found in colder climates are often larger as a greater size allows them to retain more heat ... .