Multiple occurrences of king penguin (Aptenodytes patagonicus) sexual harassment by Antarctic fur seals (Arctocephalus gazella)

Overlap and temporal variation in the diets of sympatric Antarctic and Subantarctic fur seals (Arctocephalus spp.) at Marion Island, Prince Edward Islands

“…Penguin remains occurred in 8.2% of the Antarctic fur seal scats we examined, and none of the Subantarctic fur seal scats. Opportunistic predation of penguins has been reported in Antarctic as well as Subantarctic fur seals (Hofmeyr & Bester 1993, and references therein) and land-based predation on king penguins (Aptenodytes patagonicus) by Antarctic fur seals first reported on Marion Island in 1986 persists (Hofmeyr & Bester 1993;Haddad et al 2015). Penguin remains were not abundant (0.6% of prey) or very frequent (8.2% of scats) in Antarctic fur seal scats, but the large mass represented by an individual penguin (2.7-12.0 kg; Ryan & Bester 2008) versus a myctophid (0.2 -49.8 g; Klages & Bester 1998) means that penguins may contribute substantially to the diet of Antarctic fur seals, and this may lessen interspecific overlap.…”

A tangled web: Comparing inter‐ and intraspecific mating dynamics in Anasa squash bugs

“…The term encompasses a broad range of behaviours, from intrasexual competition between heterospecific males, to misdirected courtship and attempted and actual interspecific matings, the latter of which we focus on in this study (Burdfield‐Steel & Shuker, 2011). In extreme cases, instances of interspecific mating attempts have been documented between individuals of different taxonomic orders or even classes (Haddad et al, 2015). Such observations have historically led to these interspecific mating events being dismissed as rare maladaptive curiosities, arising via mistaken identity.…”

“…The term encompasses a broad range of behaviours, from intrasexual competition between heterospecific males, to misdirected courtship and attempted and actual interspecific matings, the latter of which we focus on in this study (Burdfield-Steel & Shuker, 2011). In extreme cases, instances of interspecific mating attempts have been documented between individuals of different taxonomic orders or even classes (Haddad et al, 2015).Such observations have historically led to these interspecific mating events being dismissed as rare maladaptive curiosities, arising via mistaken identity. This paradigm likely stems from the assumption that individuals are under strong selection pressure to avoid such mating 'errors', given the observed costs that typically accompany these interactions (Kyogoku, 2015).…”