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SOCIAL BEHAVIOR TERRITORIAL BEHAVIOR TERRITORY
... • Several studies with a variety of species have revealed that males (and females) removed from their territories are usually replaced by conspecifics (and, often, replaced very quickly). • This indicates that there are 'floaters' (birds without territories) in at least some populations and suggests ...
... • Several studies with a variety of species have revealed that males (and females) removed from their territories are usually replaced by conspecifics (and, often, replaced very quickly). • This indicates that there are 'floaters' (birds without territories) in at least some populations and suggests ...
max planck society
... One of the intriguing questions is why some females are faithful while others are not. Are there intrinsic differences in the females’ propensity to be promiscuous, or is it all a matter of opportunities ? Blue Tits are one of the model species in studies of behavioural ecology. At the MPIO, a key e ...
... One of the intriguing questions is why some females are faithful while others are not. Are there intrinsic differences in the females’ propensity to be promiscuous, or is it all a matter of opportunities ? Blue Tits are one of the model species in studies of behavioural ecology. At the MPIO, a key e ...
The Secret Sex Lives of Rotifers -RE-S-O-N-A-N--CE--I-
... effective size of the male substantially larger, which makes it very difficult for the hungry female to capture. How does a male rotifer locate its potential mate? Often there are females of more than one species moving around in the medium immediately surrounding it and, therefore, it is not an eas ...
... effective size of the male substantially larger, which makes it very difficult for the hungry female to capture. How does a male rotifer locate its potential mate? Often there are females of more than one species moving around in the medium immediately surrounding it and, therefore, it is not an eas ...
Mabuya buettneri appears to closely resemble ~. varia and lays its
... The growth rate from recaptures indicate that both males and females grow at a mean rate of 0,12 rnrn/day, but this ranges from 0,3 rnrn/day to 0,01 rnrn/ day, depending on the age and size of the animal (Figure 63). It is apparent from Figure 63 that the growth rate is depressed during the winter m ...
... The growth rate from recaptures indicate that both males and females grow at a mean rate of 0,12 rnrn/day, but this ranges from 0,3 rnrn/day to 0,01 rnrn/ day, depending on the age and size of the animal (Figure 63). It is apparent from Figure 63 that the growth rate is depressed during the winter m ...
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... Plumage: Winter versus Summer plumage, sexes do not differ in plumage coloration Food: Highly opportunistic, omnivorous: fish, crustaceans, mollusks, worms, insects, birds, mammals (jaegers), vegetation and refuse Foraging Behavior: Store food in crops and regurgitate pellets Larger species ha ...
... Plumage: Winter versus Summer plumage, sexes do not differ in plumage coloration Food: Highly opportunistic, omnivorous: fish, crustaceans, mollusks, worms, insects, birds, mammals (jaegers), vegetation and refuse Foraging Behavior: Store food in crops and regurgitate pellets Larger species ha ...
Primate Studies 2
... dimorphism with males up to 400 pounds and females at 200 pounds. • Weight makes them primarily terrestrial, and semi-quadrupedal knuckle walkers. • Family groups consist of one or more large silverback (due to white hair patch across back) males, a few females and subadult offspring. • They are not ...
... dimorphism with males up to 400 pounds and females at 200 pounds. • Weight makes them primarily terrestrial, and semi-quadrupedal knuckle walkers. • Family groups consist of one or more large silverback (due to white hair patch across back) males, a few females and subadult offspring. • They are not ...
PDF - Oxford Academic - Oxford University Press
... However, some male scale-eaters from Osprey Lake were used more than once in novel combinations with different females. Visual cues A pool (91.5 cm in diameter) was filled to a depth of 10 cm with ~65.8 L of sea water. Two clear 7.6 ...
... However, some male scale-eaters from Osprey Lake were used more than once in novel combinations with different females. Visual cues A pool (91.5 cm in diameter) was filled to a depth of 10 cm with ~65.8 L of sea water. Two clear 7.6 ...
____ 20 Marine Biology Señor Robles Ducks: an Original
... 17. For ducks that paddle in icy cold waters, how do they prevent heat loss in their feet? a. They have extra thick insulation in the form of blubber b. The blood vessels close off circulation to the extremities c. They burn massive amounts of calories to maintain a high body temperature d. They swi ...
... 17. For ducks that paddle in icy cold waters, how do they prevent heat loss in their feet? a. They have extra thick insulation in the form of blubber b. The blood vessels close off circulation to the extremities c. They burn massive amounts of calories to maintain a high body temperature d. They swi ...
Queen number influences the timing of the sexual production in
... affects the production of both winged and wingless males. The disparity between C. obscurior and C. minutior can be explained by different experimental conditions: C. obscurior queens had already been fertile for an unknown time, while C. minutior queens mated at the beginning of the experiment. Thi ...
... affects the production of both winged and wingless males. The disparity between C. obscurior and C. minutior can be explained by different experimental conditions: C. obscurior queens had already been fertile for an unknown time, while C. minutior queens mated at the beginning of the experiment. Thi ...
SHORTER COMMUNICATIONS
... Comparison of infected (submissive) and noninfected (territorial) fence lizards can be used to examine three proposed functions of territoriality in Sceloporus (Martins, 1994), defending sites for foraging or thermoregulation, or protecting access to potential mates. Our results suggest that aggress ...
... Comparison of infected (submissive) and noninfected (territorial) fence lizards can be used to examine three proposed functions of territoriality in Sceloporus (Martins, 1994), defending sites for foraging or thermoregulation, or protecting access to potential mates. Our results suggest that aggress ...
Visually mediated species and neighbour recognition in fiddler crabs
... (b) Neighbour recognition in Uca capricornis Between neap and spring tide, we located male and female U. capricornis that were closest neighbours, living 10–30 cm apart and with no obstacles obscuring their view of each other. We caught the female and randomly assigned her to one of seven treatments ...
... (b) Neighbour recognition in Uca capricornis Between neap and spring tide, we located male and female U. capricornis that were closest neighbours, living 10–30 cm apart and with no obstacles obscuring their view of each other. We caught the female and randomly assigned her to one of seven treatments ...
reproductive synchrony, parental investment, and the evolutionary
... dynamic process, influencing the factors which in turn control it. To date, however, the evolutionary dynamics of sexual selection have only been carefully explored in the direction of increasing the disparity between the sexes in the degree to which they invest in the offspring. The purpose of this ...
... dynamic process, influencing the factors which in turn control it. To date, however, the evolutionary dynamics of sexual selection have only been carefully explored in the direction of increasing the disparity between the sexes in the degree to which they invest in the offspring. The purpose of this ...
answeres
... a) store food over a dry season b) bring food to its infant c) share food with its consorts or potential mates d) none of the above 31. All Catarrhines have… a) tails b) estrus swellings c) 2 premolars d) cheek pouches ...
... a) store food over a dry season b) bring food to its infant c) share food with its consorts or potential mates d) none of the above 31. All Catarrhines have… a) tails b) estrus swellings c) 2 premolars d) cheek pouches ...
Limiting Factors
... only a few make it to the ocean and then even fewer actually live to reproductive age ...
... only a few make it to the ocean and then even fewer actually live to reproductive age ...
Reciprocal Altruism - Eclectic Anthropology Server
... support, but at a cost to reproductive fitness. • Relatively recent field of study: no real work done on this subject until late 1960’s. ...
... support, but at a cost to reproductive fitness. • Relatively recent field of study: no real work done on this subject until late 1960’s. ...
Review Notes
... Biotechnology is the use of new technology to produce living things that can be used to improve conditions for human beings by manipulating genetic materials. Artificial insemination – any artificial method of joining a male (sperm) and female (egg) gamete. For example, sperm from a desirable bull ...
... Biotechnology is the use of new technology to produce living things that can be used to improve conditions for human beings by manipulating genetic materials. Artificial insemination – any artificial method of joining a male (sperm) and female (egg) gamete. For example, sperm from a desirable bull ...
CURRENT ZOOLOGY Vol. 60 (2014) Index
... Editorial Animal Behavior can inform conservation policy, we just need to get on with the job – or can it? ... ........................................................................................................................................ Ximena J. NELSON Conservation and behavior of Africa ...
... Editorial Animal Behavior can inform conservation policy, we just need to get on with the job – or can it? ... ........................................................................................................................................ Ximena J. NELSON Conservation and behavior of Africa ...
Thirteen-Lined Ground Squirrel
... This species is strictly diurnal and rarely ventures out of the burrow on dark or damp days. They survey the area around their burrow by standing in an upright position with arms held closely to the chest (Cleary and Craven 1994). If the threat of danger is suspected, they quickly retreat to the nea ...
... This species is strictly diurnal and rarely ventures out of the burrow on dark or damp days. They survey the area around their burrow by standing in an upright position with arms held closely to the chest (Cleary and Craven 1994). If the threat of danger is suspected, they quickly retreat to the nea ...
Bird Vocalizations
... • Ward and Slater (2005) used heat transfer modeling, based on thermal images, to estimate the energetic cost of singing by Canaries (Serinus canaria) not enclosed in respirometry chambers. • Metabolic rate calculated from heat transfer modeling was 14% greater than during standing, suggesting song ...
... • Ward and Slater (2005) used heat transfer modeling, based on thermal images, to estimate the energetic cost of singing by Canaries (Serinus canaria) not enclosed in respirometry chambers. • Metabolic rate calculated from heat transfer modeling was 14% greater than during standing, suggesting song ...
Frog, Leaf-nesting - UWI St. Augustine
... often larger than silent males (Smith, 2001). Thus calling sounds usually help indicate the size of the frog to the female. Vocal communication is not only used to communicate within the frog species however. These sounds also transfer signals to predators which as a result increase the predation on ...
... often larger than silent males (Smith, 2001). Thus calling sounds usually help indicate the size of the frog to the female. Vocal communication is not only used to communicate within the frog species however. These sounds also transfer signals to predators which as a result increase the predation on ...
Full-Text PDF
... whose gametes are usually larger and more costly to produce [6]. Consequently, males optimise their reproductive fitness by maximising the number of mating events, whereas females optimise fitness by selecting and mating with higher quality males, i.e., females are choosy [5–7]. Female choosiness is ...
... whose gametes are usually larger and more costly to produce [6]. Consequently, males optimise their reproductive fitness by maximising the number of mating events, whereas females optimise fitness by selecting and mating with higher quality males, i.e., females are choosy [5–7]. Female choosiness is ...
33 BEHAVIOR AND THE ENVIRONMENT
... 1. Not much is known about map sense. 2. Young birds move with a flock of experienced older birds and learn to recognize cues. Reproductive Behaviors (p. 742; Figs. 33.10; Table 33.1) A. Reproductive success is influenced by a number of factors that in turn are directly affected by its behavior. B. ...
... 1. Not much is known about map sense. 2. Young birds move with a flock of experienced older birds and learn to recognize cues. Reproductive Behaviors (p. 742; Figs. 33.10; Table 33.1) A. Reproductive success is influenced by a number of factors that in turn are directly affected by its behavior. B. ...
Behavioral ecology
![](https://commons.wikimedia.org/wiki/Special:FilePath/Aptenodytes_forsteri_-Snow_Hill_Island,_Antarctica_-juvenile-8.jpg?width=300)
Behavioral ecology is the study of the evolutionary basis for animal behavior due to ecological pressures. Behavioral ecology emerged from ethology after Niko Tinbergen outlined four questions to address when studying animal behavior which are the proximate causes, ontogeny, survival value, and phylogeny of behavior.If an organism has a trait which provides them with a selective advantage (i.e. has an adaptive significance) in a new environment natural selection will likely favor it. This was originally proposed as the theory of natural selection by Charles Darwin. Adaptive significance therefore refers to the beneficial qualities, in terms of increased survival and reproduction, a trait conveys. Genetic differences in individuals lead to behavioral differences that in turn drive differences in adaptation, reproductive success, and ultimately evolution.Individuals are always in competition with others for limited resources, including food, territories, and mates. Conflict will occur between predators and prey, between rivals for mates, between siblings, mates, and even between parents and their offspring.