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by: Judson Fisher
Judson Fisher
GPA 3.9


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About this Document

Class Notes
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Popular in Ecology, Evolution, and Marine Biology

This 14 page Class Notes was uploaded by Judson Fisher on Thursday October 22, 2015. The Class Notes belongs to EEMB 138 at University of California Santa Barbara taught by Staff in Fall. Since its upload, it has received 61 views. For similar materials see /class/226896/eemb-138-university-of-california-santa-barbara in Ecology, Evolution, and Marine Biology at University of California Santa Barbara.

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Popular in Ecology, Evolution, and Marine Biology




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Date Created: 10/22/15
873 vaiuz x cqx r rf xr l W39 K l 55 r rgtzll l Jlgrgag l EEMB 738 Ethology amp Bella ioral Ecology NOTE The real lecture presentation has custom animation which is not preserved in this Adobe PDF format However the answers did not appear until after the discussion was complete A L A 77 t r r x in lt y r r i a v 7 x 1 ne A c n f 46 quot i m l i ll u WW l F Him l l l x l I g v a x J 19 t 14 39 X 1 x l 1 Pquotg j J 417 1 JU Definitions of communication Fitness consequences to senders and receivers deceitful versus honest signals etc Features of the three major sensory channels for communication channel Chemical communication in mammals Visual communication displays ritualization 1 178 if g a n 7 r1i7 PF 7 02319 F U 71 quot7 9quot Ifquot quot3quot 7 13 V575 i ll ll ll ll g H il ii iii ll ii iii l l ll 1 ill ii ll ll loll i ll gills Most mammals see world through their noses intraspecific signals interspecific signals Urine feces amp special glands on skin What are some of the functions or messages involved in the olfactory signals of mammals r U nonons Indian mongoose has anal glands that produce 6 different acids Gliding opossum dominant male scent marks all group members Often along borders Many examples urine spraying in cats including tigers clogs wolves beavers etc Craatlng Fox Cerdocyon thous Brazil Marking done mostly by dominant individuals Rabbits live in lose social groups top ranked male and females mark most Also found in some socially roosting bats many rodents wolves and relatives plus many other examples Li i m Odor in female urine mice may suppress estrus if mice are crowded synchronized estrus in humansnot GS Odor in urine of male mice stimulates females to come into estrus t 39 female mice Will not impant fertilized eggs and may abort fetuses if exposed to urine of strange male Functions or messages involved in the olfactory signals of mammals 7 Signaling sexual receptivity by females Very common l j i Examplesm most mammals r 8 Male courtship Elk urinate on themselves musth in elephants heightened willingness to escalate fights overfemales 2 a ragga continuous urine dribbling vocalizations temporal gland secretions 50fold increase in testosterone heightened activity small males in musth will usually dominate larger males not in musth Two males in musth may fight to the death 2 of 20 fights resulted in death of one elephant in a third one a male lost an eye 11 r l ii not Tl l jil lquot in 2 lg r lalin 1 Agonistic signals and 2 honest signals of w J 4 xw orRHP fighting ability should be uncheatable otherwise they are not ESSs Can t because testosterone level is indicated in urine other males would detect if a male is faking a 4 n 9 a i Itsl rill in n i ii iii as 3 7 r L 7 a V a an l Ky s u Z ill 1 739 l i all i Lil lili l 2231jj An honest signal of intent to escalate should not occur according to theory because it seems to be quotcheatable 1 y if Vlrc r qt 541 Vl 7 V r3 wax quot 45 a ax3 77 l laV 7m r 6 a t V M 11 i luv l liqll l l l l l lilJi ilLl l iJj le ill l l Lllulkl a z J V V V V V V V V V V V V V 39 V V V V V 4 V V V 1 Too little time for eating Testosterone increases metabolism Males in musth are very active and lose weight rapidly Fights with other males can be very costly 1s a 4 n 9 a i I ll uh in n i l Cl r i 3 7 r a t 9 l u quot iii iv an i Lil lili l 2221 An honest signal of intent to escalate should not occur according to theory because it seems to be quotoheatable Elephants are very longlived A faker will be remembered and will be unable to intimidate other males


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