27.4 Social Behavior
... Some behaviors benefit other group members at a cost to the individual performing them. • There are many types of helpful social behavior. – cooperation – reciprocity – altruism ...
... Some behaviors benefit other group members at a cost to the individual performing them. • There are many types of helpful social behavior. – cooperation – reciprocity – altruism ...
Haplodiploidy seems to facilitate queen re
... Wilson 1990: 153, see also Kronauer et al. 2007). This implies that these species always found new colonies dependently. In most ant species though, queens do have wings. During and following the nuptial flight, the vast majority of them is killed by a variety of predators, including workers of the ...
... Wilson 1990: 153, see also Kronauer et al. 2007). This implies that these species always found new colonies dependently. In most ant species though, queens do have wings. During and following the nuptial flight, the vast majority of them is killed by a variety of predators, including workers of the ...
The importance of ants
... communication system which has allowed them to utilise their environment in ways approached by few other animals. Endless lines of ants create bare highways across the pindan as they tirelessly work even on the hottest Kimberley days. While passing each other they stop only momentarily in acknowledg ...
... communication system which has allowed them to utilise their environment in ways approached by few other animals. Endless lines of ants create bare highways across the pindan as they tirelessly work even on the hottest Kimberley days. While passing each other they stop only momentarily in acknowledg ...
Chapter 13F
... indirect fittness Hamilton’s rule – a rare altruistic allele can become more common in a population only if the indirect fitness gained by the altruist is greater than the direct fitness it loses as a result of the self-sacrificing actions. ...
... indirect fittness Hamilton’s rule – a rare altruistic allele can become more common in a population only if the indirect fitness gained by the altruist is greater than the direct fitness it loses as a result of the self-sacrificing actions. ...
Lecture 6: Units of Selection cont`d
... 2) Co-operative brood care 3) Specialized castes of non-reproductive individuals ...
... 2) Co-operative brood care 3) Specialized castes of non-reproductive individuals ...
Kin Selection - People Server at UNCW
... that a 3:1 female biased sex ratio results Female biased sex ratios are widespread in Hymenoptera Sundström et al (1996) showed that in wood ants, the queen lays a 1:1 sex ratio, but it ...
... that a 3:1 female biased sex ratio results Female biased sex ratios are widespread in Hymenoptera Sundström et al (1996) showed that in wood ants, the queen lays a 1:1 sex ratio, but it ...
ch12kinquizkey
... • A) describes the genetic system in which males develop from unfertilized eggs and are haploid whereas females develop from fertilized eggs and are diploid • B) makes females more closely related to their full sisters than they would be to their own offspring • C) contributes to an understanding of ...
... • A) describes the genetic system in which males develop from unfertilized eggs and are haploid whereas females develop from fertilized eggs and are diploid • B) makes females more closely related to their full sisters than they would be to their own offspring • C) contributes to an understanding of ...
SEXUAL SELECTION
... social system in which each social group contains only a relatively few reproductive individuals (sometimes just a single reproductive female and one or more reproductive males). Most of the members of the group do not reproduce, but help to maintain conditions under which breeders that are genetica ...
... social system in which each social group contains only a relatively few reproductive individuals (sometimes just a single reproductive female and one or more reproductive males). Most of the members of the group do not reproduce, but help to maintain conditions under which breeders that are genetica ...
Eusociality
Eusociality (Greek eu: ""good/real"" + ""social""), the highest level of organization of animal sociality, is defined by the following characteristics: cooperative brood care (including brood care of offspring from other individuals), overlapping generations within a colony of adults, and a division of labour into reproductive and non-reproductive groups. The division of labor creates specialized behavioral groups within an animal society which are sometimes called castes. Eusociality is distinguished from all other social systems because individuals of at least one caste usually lose the ability to perform at least one behavior characteristic of individuals in another caste.Eusociality exists in certain insects, crustaceans and possibly mammals. It is mostly observed and studied in the Hymenoptera (ants, bees, and wasps) and in the termites. For example, a colony has caste differences; queens and reproductive males take the roles as the sole reproducers while the soldiers and workers work together to create a living situation favorable for the brood. In addition to Hymenoptera and Isoptera, there are two known eusocial vertebrates from the order Rodentia, which includes the naked mole-rat and the Damaraland mole-rat. Most of the individuals cooperatively care for the brood of a single reproductive female (the queen) to which they are most likely related. Some shrimps such as Synalpheus regalis are also eusocial.Several other levels of animal sociality have been distinguished. These include presocial (solitary but social), subsocial, and parasocial (including communal, quasisocial, and semisocial).