Homosexual behavior in male goats is more frequent during breeding season and in bucks isolated from females

Ungerfeld, Rodolfo; Giriboni, Julia; Freitas‐de‐Melo, Aline; Lacuesta, Lorena

doi:10.1016/j.yhbeh.2014.04.013

Cited by 14 publications

(8 citation statements)

References 15 publications

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“…The homosexual behaviours, i.e. when males exhibit sexual behaviours to individuals of the same sex, are more frequent in males that had been isolated from females (Ungerfeld et al 2014). In our study, anestrous females with limited sexual experience exhibited more female-female mounts than sexually inexperienced goats and those with complete sexual experience, which could be associated with an attempt to attract attention of the male, and initiate a sexual interaction, perhaps caused by previous restriction to males (Beach 1976;Shearer and Katz 2006).…”

Section: Figurementioning

confidence: 46%

“…The female-female sniffing was more observed in sexually inexperienced goats than in complete and limited sexual experience female groups. Perhaps this response was due to fact that sexually inexperienced goats were more familiarized with other females than males, and then they redirected such behaviour, as has been demonstrated in male goats (Ungerfeld et al 2014).…”

Section: Figurementioning

confidence: 96%

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Sexually inexperienced anestrous goats are able to exhibit sexual behaviours exposed to sexually active bucks

Loya-Carrera

Ramírez

Terrazas

et al. 2017

JABB

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The aim of this study was to determine whether sexually inexperienced females could display proceptivity and receptivity behaviours as the experienced in the first exposure to males. Three groups of females (n=9 each) were used: i) sexually inexperienced, ii) with complete sexual experience, and iii) with limited sexual experience. Three male goats were subjected to photoperiodic treatment for 2.5 months of long days to stimulate their sexual activity during the natural sexual rest (March-April). During anestrous season, females were exposed to photo-stimulated males. Sexual behaviours were recorded during the first three days post-introduction of the males into female groups, in two daily periods of 20 min each. Sexually inexperienced females and those with complete sexual experience showed higher tail wagging than those with limited sexual experience (P<0.001). Sexually inexperienced females displayed higher female-female sniffing and emission of urine than those groups with complete and limited sexual experience (P<0.001 and P<0.05, respectively). Females with limited sexual experience displayed higher female-female mounts than those groups inexperienced and with complete sexual experience (P<0.05). In addition, females with complete sexual experience displayed higher male-female sniffing than those groups inexperienced and with limited sexual experience (P<0.001). Receptivity behaviour did not differ between female groups (P>0.05). We concluded that sexually inexperienced anestrous females display proceptivity and receptivity behaviours as those sexually experienced exposed to photo-stimulated males.

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Section: Figurementioning

confidence: 46%

Section: Figurementioning

confidence: 96%

Sexually inexperienced anestrous goats are able to exhibit sexual behaviours exposed to sexually active bucks

Loya-Carrera

Ramírez

Terrazas

et al. 2017

JABB

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“…Different mechanisms of intrasexual competition were suggested in the experimental studies ( Table 2 ): male-male courtship display can be relevant for “resource defence” ( Elie, Mathevon & Vignal, 2011 ; Abbassi & Burley, 2012 ); it plays a role on “condition assessment” of the displayer or its opponents ( Abbassi & Burley, 2012 ); and males assess the displayer condition to modulate aggressiveness ( Lane et al, 2016 ; Kuriwada, 2017 ) by “diverting costly aggression” ( Rayner & Bailey, 2019 ), or to establish “dominance hierarchies” ( Oliveira & Almada, 1998 ; Ungerfeld, Ramos & Bielli, 2007 ; Wang et al, 2011 ; Ungerfeld et al, 2014 ); with dominant males performing more male-male courtship than subordinate ones ( Adachi & Soma, 2019 referring to Langmore & Bennett, 1999 ).…”

Section: Survey Resultsmentioning

confidence: 99%

“…The mistaken identity hypothesis, a non-adaptive explanation, was suggested by the same study for five species ( Scharf & Martin, 2013 ). The other hypotheses were only mentioned once by the same or different studies: three studies suggested other non-adaptive explanations, such as displaced behaviour ( Oliveira & Almada, 1998 ; Amorim, Fonseca & Almada, 2003 ; Ungerfeld et al, 2014 ) and three studies suggested adaptive explanations, such as social glue and practice ( MacFarlane, Blomberg & Vasey, 2010 ), and thermoregulation ( Bailey & Zuk, 2009 ; Shine et al, 2000 ).…”

Section: Survey Resultsmentioning

confidence: 99%

The role of intrasexual competition on the evolution of male-male courtship display: a systematic review

Órfão

Carvalho

Rodrigues

et al. 2023

PeerJ

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Background Evidence of male-male courtship display is widespread across the animal kingdom. Yet, its function and evolutionary origin remain unclear. Here, we hypothesise that male-male courtship display evolved in response to selection pressure exerted by intrasexual competition during male-female courtship interactions. Intrasexual competition can be caused by bystander male pressure through eavesdropping and exploiting on displayer male’s courtship interactions with females. This bystander pressure can lead to an audience effect by the displayer, who will change their courtship behaviour in the presence of bystanders and display directly towards them, even in the absence of females, as an intimidation strategy. In species where this selection pressure has taken place, we predict that the male courtship display will have a dual function: attract females and deter competitors. Therefore, we expected to find more evidence of bystander-related behaviours in species for which male-male courtship display is linked to intrasexual competition compared to species for which other explanatory hypotheses are more plausible (e.g., mistaken identity or courtship practice). Methodology We conducted two systematic reviews to test this hypothesis. First, we conducted a search for studies of species with courtship display between males and of the hypotheses provided to explain this behaviour. Our goal was to identify the species with male-male courtship display and evidence of intrasexual competition. Second, among the species with male-male courtship display, we searched for evidence of bystander-related behaviours, i.e., articles referring to eavesdropping, exploitation, and audience effect during male-female courtship interactions. Our goal was to test whether species with intrasexual competition are also more likely to show bystander-related behaviours. Results Although most studies reporting male courtship display towards other males do not suggest any explanatory hypothesis for this behaviour, the intrasexual competition hypothesis was largely mentioned and supported by some studies reviewed. Additionally, there is more evidence of eavesdropping and of all three bystander-related behaviours combined in species for which the intrasexual competition hypothesis was suggested. Conclusions Overall, our review supports the hypothesis that intrasexual competition can play a key role in male courtship display evolution, namely that male-male courtship display may have evolved as a secondary function of male-female courtship interactions via bystander male pressure. However, our review also shows that despite the increasing interest in same-sex sexual behaviours, and male-male courtship display in particular, most studies were found to be merely descriptive, and the hypotheses they suggested to explain courtship display between males mostly speculative. This highlights an important gap in the literature. To clarify both the evolution and the function of male-male courtship display, this behaviour needs to be empirically studied more often. Our review can help advancing this research area, as it makes the 20 species with male-male courtship display for which the intrasexual competition hypothesis was suggested excellent candidates for empirical research.

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“…Also, bucks are readily infected when they come in contact with infected semen deposited by other infected males during co-servings of does on heat (Godfroid et al, 2004). In addition, small ruminant males are known to exhibit homosexual behaviours and Brucella infection is readily established when the organism is deposited on abraded mucous membranes (EC, 2001;CFSPH, 2009a) an occurrence which is common with anal sex (Ungerfeild et al, 2014). However, the study was undertaken in the abattoir and therefore not representative of the situation in the local herds/flocks in the area studied.…”

Section: Discussionmentioning

confidence: 99%

Occurrence of brucellosis in small ruminants slaughtered in Lafia central abattoir, Nasarawa State, Nigeria

Agada¹,

Ogugua²,

Anzaku³

2018

Sokoto J. Vet. Sc.

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Homosexual behavior in male goats is more frequent during breeding season and in bucks isolated from females

Cited by 14 publications

References 15 publications

Sexually inexperienced anestrous goats are able to exhibit sexual behaviours exposed to sexually active bucks

Sexually inexperienced anestrous goats are able to exhibit sexual behaviours exposed to sexually active bucks

The role of intrasexual competition on the evolution of male-male courtship display: a systematic review

Occurrence of brucellosis in small ruminants slaughtered in Lafia central abattoir, Nasarawa State, Nigeria

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