TheDrosophilaKctd-family homologueKctd12-likemodulates male aggression and mating behaviour

2014 ◽  
Vol 40 (3) ◽  
pp. 2513-2526 ◽  
Author(s):  
Michael J. Williams ◽  
Philip Goergen ◽  
Ganesh Phad ◽  
Robert Fredriksson ◽  
Helgi B. Schiöth
Keyword(s):  
Mating Behaviour ◽  
Male Aggression

Male aggression, limited female choice and the ontogeny of mating behaviour in the flesh flySarcophaga crassipalpis

2015 ◽  
Vol 40 (4) ◽  
pp. 325-335 ◽  
Author(s):  
J. Dylan Shropshire ◽  
Darrell Moore ◽  
Edith Seier ◽  
Karl H. Joplin
Keyword(s):  
Female Choice ◽  
Mating Behaviour ◽  
Male Aggression

Variation of Male–Male Aggression Patterns in Harbor Seals (Phoca vitulina)

2020 ◽  
Vol 46 (2) ◽  
pp. 119-123
Author(s):  
Anders Galatius ◽  
Jonas Teilmann ◽  
Jakob Tougaard ◽  
Rune Dietz
Keyword(s):  
Phoca Vitulina ◽  
Harbor Seals ◽  
Male Aggression

Bonobo baby dominance: Did female defense of offspring lead to reduced male aggression?

2018 ◽  
Author(s):  
Kara Walker ◽  
Brian Hare
Keyword(s):  
Adult Male ◽  
Social System ◽  
Dominant Species ◽  
Potential Solution ◽  
Adult Males ◽  
Male Aggression ◽  
Dominance Style ◽  
The Social ◽  
Initial Support

The dominance style of bonobos presents an evolutionary puzzle. Bonobos are not male dominant but female bonobos do not show traits typical of female-dominant species. This chapter proposes the offspring dominance hypothesis (ODH) as a potential solution. ODH suggests the social system of bonobos evolved as a defence against infanticide and is not due to pressure to monopolize resources. Females that prevented aggression towards offspring and preferred mating with less aggressive males were most successful. Supporting ODH, during observations at Lola ya Bonobo Sanctuary it was found that: 1) adult male bonobos are rarely aggressive towards offspring with mothers, 2) some mother-reared juvenile bonobos attain rank higher than adult males and 3) mother-reared offspring often socially interact with adult males without their mothers nearby. These preliminary findings provide initial support that the bonobo social system evolved due to fitness advantages of effectively protecting offspring against consequences of male aggression. Le style de dominance des bonobos présente un puzzle évolutionnaire. Les bonobos ne sont pas dominés par les mâles mais les bonobos femelles ne montrent pas les traits caractéristiques d’une espèce dominée par femelles. On propose l’hypothèse de dominance de progéniture (ODH) comme une solution potentielle. La ODH suggère que le système social des bonobos a évolué en défense contre l’infanticide et pas sous pression pour la monopolisation des ressources. Les femelles qui préviennent l’agression vers leur progéniture et leur préférence d’accouplement avec des mâles moins agressives étaient très efficaces. À l’appui de la ODH on a trouvé pendant nos observations à Lola ya Bonobo Sanctuary que: 1) les mâles adultes bonobos agressent rarement vers les bébés avec mères, 2) quelques adolescents bonobos qui furent élevés par leurs mères atteignent un rang plus haut que les mâles adultes et 3) la progéniture élevée par la mère interagissent avec avec d’adultes mâles sans la présence de leur mère. Ces trouvailles préliminaires donnent appuie à l’hypothèse que le système social des bonobos a évolué par les avantages corporelles de la protection de la progéniture contre les conséquences de l’agression mâle.

scholarly journals Different stress from parasites and mate choice in two female morphs of the blue-tailed damselfly

2021 ◽  
Author(s):  
Erica Subrero ◽  
Irene Pellegrino ◽  
Marco Cucco
Keyword(s):  
Mating Behaviour ◽  
Adult Males ◽  
Similar Frequency ◽  
Male Preference ◽  
Ischnura Elegans ◽  
Emergence Success ◽  
The Common ◽  
Nw Italy ◽  
Whole Life Cycle ◽  
Pairing Behaviour

AbstractIn Odonates, female colour polymorphism is common and implies the presence of two or more female types with different colours and behaviours. To explain this phenomenon, several hypotheses have been proposed that consider morph frequency, population density, the presence of parasites, and mating behaviour. We studied the blue-tailed damselfly Ischnura elegans, a species with a blue androchrome morph and two gynochrome morphs (the common green infuscans, and the rare orange rufescens-obsoleta). The size of adult males and females, the presence of parasites, and pairing behaviour between males and the three female morphs was assessed in field conditions throughout the reproductive season in NW Italy. Moreover, growth and emergence success of larvae produced by the different morphs was analyzed in standardized conditions. In the field, males showed a preference for the gynochrome infuscans females, despite a similar frequency of androchrome females. In test conditions, male preference for the infuscans females was also observed. Paired males and paired androchrome females were larger than unpaired individuals, while there were no differences in size between paired and unpaired infuscans females. Males and androchrome females were more parasitized than infuscans females. The survival and emergence success of larvae produced by androchrome females was higher than those of offspring produced by the infuscans females. Our results suggest that a higher survival of progeny at the larval stage could counterbalance the higher parasitism and the lower pairing success of andromorph adult females and highlight the importance of considering the whole life-cycle in polymorphism studies.

scholarly journals ‘Hangry’ Drosophila: food deprivation increases male aggression

2021 ◽  
Vol 177 ◽  
pp. 183-190
Author(s):  
Danielle Edmunds ◽  
Stuart Wigby ◽  
Jennifer C. Perry
Keyword(s):  
Food Deprivation ◽  
Male Aggression

scholarly journals Influence of a raised slatted area in front of the nest on leg health, mating behaviour and floor eggs in broiler breeders

animal ◽  
2020 ◽  
pp. 100109
Author(s):  
A.C.M. van den Oever ◽  
L. Candelotto ◽  
B. Kemp ◽  
T.B. Rodenburg ◽  
J.E. Bolhuis ◽  
...  
Keyword(s):  
Mating Behaviour ◽  
Broiler Breeders

Observations on the Mating Behaviour of the Crab Hole Mosquito Deinocerites cancer (Diptera: Culicidae)

1966 ◽  
Vol 98 (11) ◽  
pp. 1169-1177 ◽  
Author(s):  
J. A. Downes
Keyword(s):  
Adult Male ◽  
Mating Behaviour ◽  
Surface Film ◽  
Natural Habitat ◽  
Chemical Stimulus ◽  
Strong Response ◽  
Mating Response ◽  
Auditory Response

AbstractIn Deinocerites, an aberrant offshoot of Culex, the larvae live in water in deep crab holes and the adults also are often found in the burrow. The males have elongate non-plumose antennae and specialized front claws, and often rest on the surface film. In observation cages the males associate with pupae (of either sex) at the surface of the water, hold them lightly with the claws and sense the pupal horns (spiracles) with their antennae. The male perceives the pupa at 1–2 cm. An emerging female elicits a strong response from males up to 15 cm. away; the males fight for possession and mating may be established before the female has fully emerged. The pupal skin continues to attract for several minutes thereafter. Emergence of the adult male was not successfully observed. Probably both pupal attendance and mating response depend on a chemical stimulus, which appears to be non-specific.The males also make slow exploratory flights near the cage walls, and a mating response may be elicited when their legs touch a resting insect. The response is made to either sex (perhaps more readily to the female) and again is non-specific. The two mating processes are presumably reinforcing, and both seem well adapted to the natural habitat provided the lack of specificity is tolerable.Several other mosquitoes, all of slow flight and restricted habitat, make similar irregular flights and mate on contact with resting females. Probably this behaviour represents the last phase of mating in more strongly flying (swarming) species, after the sexes are brought together by the auditory response mediated by the plumose antennae. In some mosquitoes the two patterns of behaviour coexist. Assembly at a swarm-marker and recognition in flight must be less necessary in non-dispersing forms in confined habitats, and most of all in Deinocerites. Several other crab hole mosquitoes show convergence or analogies with Deinocerites.The association with the pupa and the related attraction to the female at emergence find a parallel only in Opifex fuscus; but in Opifex these processes depend not on a chemical stimulus but mainly on vision, as befits an inhabitant of open sunlit pools.

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