The driving forces behind female-female aggression and its fitness consequence in an Asian agamid lizard

Wu, Yayong; Whiting, Martin J.; Fu, Jinzhong; Qi, Yin

doi:10.1007/s00265-019-2686-8

Cited by 14 publications

(8 citation statements)

References 48 publications

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“…Although these possible explanations have been put forward [1,2], there seems to be a lack of quantitative estimates. Still, studies on female-female competition through interference in social groups support the general idea that interference is stronger when it can increase the RS of a dominant individual [21,[26][27][28].…”

Section: Discussionmentioning

confidence: 99%

Effects of local versus global competition on reproductive skew and sex differences in social dominance behaviour

Leimar

Bshary

2022

Proc. R. Soc. B.

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Social hierarchies are often found in group-living animals. The hierarchy position can influence reproductive success (RS), with a skew towards high-ranking individuals. The amount of aggression in social dominance varies greatly, both between species and between males and females within species. Using game theory we study this variation by taking into account the degree to which reproductive competition in a social group is mainly local to the group, emphasizing within-group relative RS, or global to a larger population, emphasizing an individual’s absolute RS. Our model is similar to recent approaches in that reinforcement learning is used as a behavioural mechanism allowing social-hierarchy formation. We test two hypotheses. The first is that local competition should favour the evolution of mating or foraging interference, and thus of reproductive skew. Second, decreases in reproductive output caused by an individual’s accumulated fighting damage, such as reduced parenting ability, will favour less intense aggression but should have little influence on reproductive skew. From individual-based simulations of the evolution of social dominance and interference, we find support for both hypotheses. We discuss to what extent our results can explain observed sex differences in reproductive skew and social dominance behaviour.

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Section: Discussionmentioning

confidence: 99%

Effects of local versus global competition on reproductive skew and sex differences in social dominance behaviour

Leimar

Bshary

2022

Proc. R. Soc. B.

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“…Although these possible explanations have been put forward [1, 2], there seems to be a lack of quantitative estimates. Still, studies on female-female competition through interference in social groups support the general idea that interference is stronger when it can increase the RS of a dominant individual [23, 24, 13, 25].…”

Section: Discussionmentioning

confidence: 99%

Effects of local versus global competition on reproductive skew and sex differences in social dominance behaviour

Leimar

Bshary

2022

Preprint

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Social hierarchies are often found in group-living animals. The hierarchy position can influence reproductive success (RS), with a skew towards high-ranking individuals. The amount of aggression in social dominance varies greatly, both between species and between males and females within species. Using game theory we study this variation by taking into account the degree to which reproductive competition in a social group is mainly local to the group, emphasising within-group relative RS, or global to a larger population, emphasising an individual’s absolute RS. Our model is similar to recent approaches in that reinforcement learning is used as a behavioural mechanism allowing social-hierarchy formation. We test two hypotheses. The first is that local competition should favour the evolution of mating or foraging interference, and thus of reproductive skew. Second, decreases in reproductive output caused by an individual’s accumulated fighting damage, such as reduced parenting ability, will favour less intense aggression but should have little influence on reproductive skew. From individual-based simulations of the evolution of social dominance and interference, we find support for both hypotheses. We discuss to what extent our results can explain observed sex differences in reproductive skew and social dominance behaviour.

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“…The aggressive behavior observed in our conspecific stimulus experiments could be an artifact related to the unnatural environment of the empty tank used for these experiments that might have caused the sensation of depleted resources. Indeed, female–female aggression in lizards has been recently linked to resource competition in the agamid lizard Phrynocephalus vlangalii [ 67 ]. Still, the differences in aggressiveness observed in same-sex compared to opposite-sex laboratory treatments might have complex multimodal basis that should be further studied.…”

Section: Discussionmentioning

confidence: 99%

Visual Signaling in the Semi-Fossorial Lizard Pholidobolus montium (Gymnophthalmidae)

Poma-Soto

Narváez²,

Romero‐Carvajal

2021

Animals

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It has been suggested that gymnophthalmids, like most semi-fossorial lacertoids, rely more in chemical cues to communicate, in comparison to other groups, like Iguanids, on which communication is mostly based on visual signaling. We present the first description of visual signaling in the Andean lizard Pholidobolusmontium (Gymnophthalmidae) and a complete ethogram based on ex situ observations (34 different types of behaviors including positions and simple movements). Through the design of conspecific stimulus experiments, we were able to recognize leg-waving as a visual signal, as it is only displayed in presence of conspecifics or in presence of a mirror and was one of first and most frequent displays in this context. We also detected other visual displays like neck-arching and tail-undulation which may also be relevant as visual signals. Based on our results, we propose that visual signaling is also possible in semi-fossorial lizards; however, further studies regarding chemical signal recognition and color detection are required to confirm our hypothesis.

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The driving forces behind female-female aggression and its fitness consequence in an Asian agamid lizard

Cited by 14 publications

References 48 publications

Effects of local versus global competition on reproductive skew and sex differences in social dominance behaviour

Effects of local versus global competition on reproductive skew and sex differences in social dominance behaviour

Effects of local versus global competition on reproductive skew and sex differences in social dominance behaviour

Visual Signaling in the Semi-Fossorial Lizard Pholidobolus montium (Gymnophthalmidae)

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