scholarly journals Parasitic cuckoo catfish exploit parental responses to stray offspring

2019 ◽  
Vol 374 (1769) ◽  
pp. 20180412 ◽  
Author(s):  
M. Polačik ◽  
M. Reichard ◽  
C. Smith ◽  
R. Blažek
Keyword(s):  
Brood Parasitism ◽  
Lake Tanganyika ◽  
Buccal Cavity ◽  
Brood Parasite ◽  
Theme Issue ◽  
Brood Parasites ◽  
Parental Response ◽  
Interspecific Brood Parasitism ◽  
Late Developmental Stage ◽  
Parental Responses

Interspecific brood parasitism occurs in several independent lineages of birds and social insects, putatively evolving from intraspecific brood parasitism. The cuckoo catfish, Synodontis multipunctatus , the only known obligatory non-avian brood parasite, exploits mouthbrooding cichlid fishes in Lake Tanganyika, despite the absence of parental care in its evolutionary lineage (family Mochokidae). Cuckoo catfish participate in host spawning events, with their eggs subsequently collected and brooded by parental cichlids, though they can later be selectively rejected by the host. One scenario for the origin of brood parasitism in cuckoo catfish is through predation of cichlid eggs during spawning, eventually resulting in a spatial and temporal match in oviposition by host and parasite. Here we demonstrate experimentally that, uniquely among all known brood parasites, cuckoo catfish have the capacity to re-infect their hosts at a late developmental stage following egg rejection. We show that cuckoo catfish offspring can survive outside the host buccal cavity and re-infect parental hosts at a later incubation phase by exploiting the strong parental instinct of hosts to collect stray offspring. This finding implies an alternative evolutionary origin for cuckoo catfish brood parasitism, with the parental response of host cichlids facilitating its evolution. This article is part of the theme issue ‘The coevolutionary biology of brood parasitism: from mechanism to pattern’.

scholarly journals Brood parasitism in eusocial insects (Hymenoptera): role of host geographical range size and phylogeny

2019 ◽  
Vol 374 (1769) ◽  
pp. 20180203 ◽  
Author(s):  
Jukka Suhonen ◽  
Jaakko J. Ilvonen ◽  
Tommi Nyman ◽  
Jouni Sorvari
Keyword(s):  
Brood Parasitism ◽  
Range Size ◽  
Geographical Range ◽  
Social Parasite ◽  
Brood Parasite ◽  
Social Parasites ◽  
Brood Parasites ◽  
Eusocial Insects ◽  
Interspecific Brood Parasitism ◽  
Logistic Regressions

Interspecific brood parasitism is common in many animal systems. Brood parasites enter the nests of other species and divert host resources for producing their own offspring, which can lead to strong antagonistic parasite–host coevolution. Here, we look at commonalities among social insect species that are victims of brood parasites, and use phylogenetic data and information on geographical range size to predict which species are most probably to fall victims to brood parasites in the future. In our analyses, we focus on three eusocial hymenopteran groups and their brood parasites: (i) bumblebees, (ii) Myrmica ants, and (iii) vespine and polistine wasps. In these groups, some, but not all, species are parasitized by obligate workerless inquilines that only produce reproductive-caste descendants. We find phylogenetic signals for geographical range size and the presence of parasites in bumblebees, but not in ants and wasps. Phylogenetic logistic regressions indicate that the probability of being attacked by one or more brood parasite species increases with the size of the geographical range in bumblebees, but the effect is statistically only marginally significant in ants. However, non-phylogenetic logistic regressions suggest that bumblebee species with the largest geographical range sizes may have a lower likelihood of harbouring social parasites than do hosts with medium-sized ranges. Our results provide new insights into the ecology and evolution of host–social parasite systems, and indicate that host phylogeny and geographical range size can be used to predict threats posed by social parasites, as well to design efficient conservation measures for both hosts and their parasites. This article is part of the theme issue ‘The coevolutionary biology of brood parasitism: from mechanism to pattern’.

scholarly journals Under the radar: detection avoidance in brood parasitic bees

2019 ◽  
Vol 374 (1769) ◽  
pp. 20180196 ◽  
Author(s):  
Jessica R. Litman
Keyword(s):  
Brood Parasitism ◽  
Solitary Bees ◽  
General Context ◽  
Brood Parasite ◽  
Theme Issue ◽  
Evolutionary Transitions ◽  
Brood Parasites ◽  
Selective Pressures ◽  
Specialized Form ◽  
Fierce Competition

Brood parasitism is a specialized form of parasitism in which the offspring of a parasite develops on the food provisions gathered by a host species for its own young. Obligate brood parasitic lineages have lost the ability to acquire provisions for their young and thus rely entirely on the location of an appropriate host to serve as a food-provider. Solitary bees provide some of the most fascinating examples of brood parasitism in animals. Most solitary bees build and provision their own nests. Some, however, usurp the nests of other species of bees. These brood parasites, or ‘cuckoo’ bees, deposit their eggs on the pollen provisions collected by a host bee for her own offspring. The provisions stored by the host bee are not sufficient to sustain the development of both the host's larva and that of the brood parasite and the parasite must kill the offspring of its host in order to obtain enough nourishment to complete its development. As a consequence, there is fierce competition between the host bee seeking to protect her nest from attack and the brood parasite seeking to avoid detection by the host in order to successfully deposit her eggs in an appropriate nest. In this paper, I review the behaviours that allow brood parasitic bees to escape detection by their hosts. Identifying these behaviours, and placing them within the general context of strategies employed by brood parasitic bees to parasitize the nests of their hosts, is key to understanding how brood parasitic lineages may have evolved from nest-building ancestors, decrypting the selective pressures that drive evolutionary transitions from one strategy to another and, more broadly, revealing how similar selective pressures in widely divergent lineages of animals have given rise to remarkably convergent behaviours. This article is part of the theme issue ‘The coevolutionary biology of brood parasitism: from mechanism to pattern’.

scholarly journals Early life-history features associated with brood parasitism in the cuckoo catfish, Synodontis multipunctatus (Siluriformes: Mochokidae)

2019 ◽  
Vol 374 (1769) ◽  
pp. 20180205 ◽  
Author(s):  
Marcus S. Cohen ◽  
M. Brent Hawkins ◽  
David W. Stock ◽  
Alexander Cruz
Keyword(s):  
Life History ◽  
Brood Parasitism ◽  
Lake Tanganyika ◽  
Rapid Development ◽  
Life History Strategy ◽  
Early Life History ◽  
Early Ontogeny ◽  
Brood Parasite ◽  
Theme Issue ◽  
Morphological Differences

The cuckoo catfish, Synodontis multipunctatus , is the only known obligate brood parasite among fishes, exploiting the parental care of mouthbrooding cichlids endemic to Lake Tanganyika. Comparisons of this system to brood parasitism in birds may reveal broader principles that underlie the evolution of this life-history strategy in vertebrates. However, little is known about the features of the cuckoo catfish that enable this species to successfully parasitize cichlids. Here, we examine early ontogeny of the cuckoo catfish and compare it to that of its cichlid hosts as well as a non-parasitic congener. We found that cuckoo catfish embryos develop and hatch in advance of host embryos, and begin feeding on cichlid young just as they start to hatch. Overall timing of ontogeny in the cuckoo catfish was found to be similar to that of the substrate-spawning congener Synodontis lucipinnis , suggesting that more rapid development of the cuckoo catfish relative to cichlids is not a unique adaptation to brood parasitism. However, we found that cuckoo catfish progeny exhibit extensive morphological differences from S . lucipinnis , which may represent adaptations to brood parasitism. These life-history observations reveal both similarities and differences between the cuckoo catfish system and brood parasitism in other lineages. This article is part of the theme issue ‘The coevolutionary biology of brood parasitism: from mechanism to pattern’.

scholarly journals Patterns of host use by brood parasitic Maculinea butterflies across Europe

2019 ◽  
Vol 374 (1769) ◽  
pp. 20180202 ◽  
Author(s):  
András Tartally ◽  
Jeremy A. Thomas ◽  
Christian Anton ◽  
Emilio Balletto ◽  
Francesca Barbero ◽  
...  
Keyword(s):  
Brood Parasitism ◽  
Geographical Variation ◽  
Host Switching ◽  
Host Use ◽  
Theme Issue ◽  
Geographic Mosaic ◽  
New Host ◽  
Brood Parasites ◽  
Comprehensive Survey ◽  
Maculinea Butterflies

The range of hosts exploited by a parasite is determined by several factors, including host availability, infectivity and exploitability. Each of these can be the target of natural selection on both host and parasite, which will determine the local outcome of interactions, and potentially lead to coevolution. However, geographical variation in host use and specificity has rarely been investigated. Maculinea (= Phengaris ) butterflies are brood parasites of Myrmica ants that are patchily distributed across the Palæarctic and have been studied extensively in Europe. Here, we review the published records of ant host use by the European Maculinea species, as well as providing new host ant records for more than 100 sites across Europe. This comprehensive survey demonstrates that while all but one of the Myrmica species found on Maculinea sites have been recorded as hosts, the most common is often disproportionately highly exploited. Host sharing and host switching are both relatively common, but there is evidence of specialization at many sites, which varies among Maculinea species. We show that most Maculinea display the features expected for coevolution to occur in a geographic mosaic, which has probably allowed these rare butterflies to persist in Europe. This article is part of the theme issue ‘The coevolutionary biology of brood parasitism: from mechanism to pattern’.

scholarly journals The coevolutionary biology of brood parasitism: a call for integration

2019 ◽  
Vol 374 (1769) ◽  
pp. 20180190 ◽  
Author(s):  
Rose Thorogood ◽  
Claire N. Spottiswoode ◽  
Steven J. Portugal ◽  
Ros Gloag
Keyword(s):  
Parental Care ◽  
Brood Parasitism ◽  
Evolutionary History ◽  
Social Evolution ◽  
Special Issue ◽  
Theme Issue ◽  
Brood Parasites ◽  
History Of ◽  
Ancient Times ◽  
Illuminating System

Obligate brood-parasitic cheats have fascinated natural historians since ancient times. Passing on the costs of parental care to others occurs widely in birds, insects and fish, and often exerts selection pressure on hosts that in turn evolve defences. Brood parasites have therefore provided an illuminating system for researching coevolution. Nevertheless, much remains unknown about how ecology and evolutionary history constrain or facilitate brood parasitism, or the mechanisms that shape or respond to selection. In this special issue, we bring together examples from across the animal kingdom to illustrate the diverse ways in which recent research is addressing these gaps. This special issue also considers how research on brood parasitism may benefit from, and in turn inform, related fields such as social evolution and immunity. Here, we argue that progress in our understanding of coevolution would benefit from the increased integration of ideas across taxonomic boundaries and across Tinbergen’s Four Questions: mechanism, ontogeny, function and phylogeny of brood parasitism. We also encourage renewed vigour in uncovering the natural history of the majority of the world's brood parasites that remain little-known. Indeed, it seems very likely that some of nature’s brood parasites remain entirely unknown, because otherwise we are left with a puzzle: if parental care is so costly, why is brood parasitism not more common?This article is part of the theme issue ‘The coevolutionary biology of brood parasitism: from mechanism to pattern’.

scholarly journals The ghosts of parasitism past: lingering frontline anti-brood parasite defences in a former host

2021 ◽  
Author(s):  
Matthew H J Chaumont ◽  
Naomi E Langmore ◽  
Justin A Welbergen
Keyword(s):  
Brood Parasitism ◽  
Species Interactions ◽  
Egg Laying ◽  
Arms Race ◽  
Fine Tuning ◽  
Brood Parasite ◽  
Reed Warbler ◽  
Arms Races ◽  
Brood Parasites ◽  
Defensive Behaviors

Abstract Coevolutionary arms races between brood parasites and hosts provide tractable systems for understanding antagonistic coevolution in nature; however, little is known about the fate of frontline antiparasite defences when the host ‘wins’ the coevolutionary arms race. By recreating bygone species-interactions, using artificial parasitism experiments, lingering defensive behaviors that evolved in the context of parasitism can be understood and may even be used to identify the unknown agent of parasitism past. Here we present the first study of this type by evaluating lingering “frontline” nest defences that have evolved to prevent egg laying in a former brood parasite host. The Australian reed warbler Acrocephalus australis, is currently not parasitized but is known to exhibit fine-tuned egg discrimination—a defensive behavior indicative of a past brood parasite-host arms race and common in closely related parasitized species. Here, using 3 D-printed models of adult brood parasites, we examined whether the Australian reed warbler also exhibits frontline defences to adult brood parasites, and whether we could use these defences to identify the warbler’s “ghost of parasitism past”. Our findings provide evidence that the Australian reed warbler readily engages in frontline defences that are considered adaptive specifically in the context of brood parasitism. However, individuals were unable to discriminate between adults of different brood parasite species at their nest. Overall, our results demonstrate that despite a relaxation in selection, defences against brood parasitism can be maintained across multiple stages of the host’s nesting cycle, and further suggest that, in accordance with previous findings, that learning may be important for fine-tuning frontline defence.

scholarly journals Defences against brood parasites from a social immunity perspective

2019 ◽  
Vol 374 (1769) ◽  
pp. 20180207 ◽  
Author(s):  
S. C. Cotter ◽  
D. Pincheira-Donoso ◽  
R. Thorogood
Keyword(s):  
Immune Responses ◽  
Brood Parasitism ◽  
Inclusive Fitness ◽  
Social Immunity ◽  
Theme Issue ◽  
Brood Parasites ◽  
Structured Groups ◽  
Parasitic Interactions ◽  
The Individual ◽  
Multicellular Organisms

Parasitic interactions are so ubiquitous that all multicellular organisms have evolved a system of defences to reduce their costs, whether the parasites they encounter are the classic parasites which feed on the individual, or brood parasites which usurp parental care. Many parallels have been drawn between defences deployed against both types of parasite, but typically, while defences against classic parasites have been selected to protect survival, those against brood parasites have been selected to protect the parent's inclusive fitness, suggesting that the selection pressures they impose are fundamentally different. However, there is another class of defences against classic parasites that have specifically been selected to protect an individual's inclusive fitness, known as social immunity . Social immune responses include the anti-parasite defences typically provided for others in kin-structured groups, such as the antifungal secretions produced by termite workers to protect the brood. Defences against brood parasites, therefore, are more closely aligned with social immune responses. Much like social immunity, host defences against brood parasitism are employed by a donor (a parent) for the benefit of one or more recipients (typically kin), and as with social defences against classic parasites, defences have therefore evolved to protect the donor's inclusive fitness, not the survival or ultimately the fitness of individual recipients This can lead to severe conflicts between the different parties, whose interests are not always aligned. Here, we consider defences against brood parasitism in the light of social immunity, at different stages of parasite encounter, addressing where conflicts occur and how they might be resolved. We finish with considering how this approach could help us to address longstanding questions in our understanding of brood parasitism. This article is part of the theme issue ‘The coevolutionary biology of brood parasitism: from mechanism to pattern’.

scholarly journals Egg Discrimination in the Yellowhammer

The Condor ◽  
2004 ◽  
Vol 106 (2) ◽  
pp. 405-410 ◽  
Author(s):  
Petr Procházka ◽  
Marcel Honza
Keyword(s):  
Brood Parasitism ◽  
Host Responses ◽  
Brood Parasite ◽  
Cuculus Canorus ◽  
The Czech Republic ◽  
Egg Discrimination ◽  
Emberiza Citrinella ◽  
Interspecific Brood Parasitism ◽  
Egg Mimicry ◽  
A Minor

Abstract In a coevolutionary arms race between a brood parasite and its host, both species evolve adaptations and counteradaptations, such as egg mimicry and egg discrimination. The Yellowhammer (Emberiza citrinella) is a minor host of the Common Cuckoo (Cuculus canorus) in Europe. We studied egg discrimination in the Yellowhammer in the Czech Republic where it is parasitized only occasionally. To investigate host responses to parasitic eggs, we added either a nonmimetic (blue) or a mimetic (conspecific) egg to 50 nests. The hosts rejected nonmimetic eggs at a higher rate (92%) than mimetic eggs (32%). Neither intraclutch variation nor contrast between mimetic and host eggs had a significant effect on rejection behavior. There is no evidence for intraspecific brood parasitism in this species. The ability to reject mimetic eggs has therefore most likely evolved as an adaptation against interspecific brood parasitism and may be the reason why the Yellowhammer is parasitized only occasionally. Discriminación de Huevos en Emberiza citrinella Resumen. En una carrera armamentista co-evolutiva entre un ave parásita y su hospedador es previsible que ambas especies desarrollen adaptaciones y contraadaptaciones tales como el ovomimetismo y la ovodiscriminación. Emberiza citrinella es un huésped menor de Cuculus canorus en Europa. Estudiamos la capacidad discriminatoria de los huevos, por parte de Emberiza citrinella, en la República Checa, donde la especie es parasitada sólo ocasionalmente. Con objeto de investigar la respuesta del hospedador a los huevos parásitos, añadimos un huevo no mimético (azul) o uno mimético (coespecífico) a 50 nidos. El hospedador rechazó los huevos no miméticos en una proporción más elevada (92%) que los miméticos (32%). Ni la variación de la apariencia del huevo dentro de la puesta, ni el contraste entre los huevos miméticos y los del hospedador, parecen tener algún efecto significativo en el comportamiento de rechazo. No hay evidencias de la existencia de parasitismo intraespecífico en esta especie. Por tanto, la habilidad de Emberiza citrinella para rechazar huevos miméticos probablemente ha evolucionado como una adaptación contra el parasitismo interespecífico y esta puede ser la razón de por qué la especie es parasitada sólo de manera ocasional.

scholarly journals Fast and furious: host aggression modulates behaviour of brood parasites

2020 ◽  
Author(s):  
Václav Jelínek ◽  
Michal Šulc ◽  
Gabriela Štětková ◽  
Marcel Honza
Keyword(s):  
Brood Parasitism ◽  
Egg Laying ◽  
Nest Defence ◽  
Great Reed Warbler ◽  
Acrocephalus Arundinaceus ◽  
Brood Parasite ◽  
Cuculus Canorus ◽  
Common Cuckoo ◽  
Brood Parasites ◽  
The Common

ABSTRACTAvian brood parasites pose a serious threat for hosts, substantially reducing their fitness which selects for the evolution of host defences. A classic example of a host frontline defence is mobbing which frequently includes contact attacking of brood parasites. Here, we investigated how the nest defence of a very aggressive great reed warbler (Acrocephalus arundinaceus) host influences the speed of egg-laying and egg-removing behaviour of its brood parasite – the common cuckoo (Cuculus canorus). We video-recorded 168 brood parasitic events at 102 active host nests and found that cuckoos avoided host mobbing in only 62% of cases. If hosts spotted the cuckoo at their nests, they almost always attacked it (in 91 of 104 cases), however, such attacks only rarely and temporarily prevented cuckoos from parasitizing (11 additional cases). When attacked, cuckoos parasitized host nests significantly faster and left them immediately. However, when not attacked, cuckoos frequently stayed at or near the nest suggesting that host aggression, rather than the risk of being spotted, influences the speed of brood parasitism in this species. Further, we found that cuckoos performed egg-removing behaviour in all parasitic events without regard to host aggression. As a result, cuckoos removed at least one egg during all brood parasitism events except those when an egg slipped from their beaks and fell back into the nest (in 9 of 73 cases). This indicates that egg-removing behaviour is not costly for the common cuckoo and is an essential part of its parasitism strategy, widening understanding of this currently unexplained behaviour.

scholarly journals The brood parasite's guide to inclusive fitness theory

2019 ◽  
Vol 374 (1769) ◽  
pp. 20180198 ◽  
Author(s):  
Ros Gloag ◽  
Madeleine Beekman
Keyword(s):  
Brood Parasitism ◽  
Social Behaviour ◽  
Inclusive Fitness ◽  
Alloparental Care ◽  
Brood Parasite ◽  
Brood Parasites ◽  
Inclusive Fitness Theory ◽  
Kin Structure ◽  
Host Evolution ◽  
Reproductive Tactic

Hamilton's theory of inclusive fitness provides a framework for understanding the evolution of social behaviour between kin, including parental and alloparental care. Brood parasitism is a reproductive tactic in which parasites exploit the care of other individuals of the same species (conspecific parasitism) or different species (interspecific parasitism) to rear their brood. Here, drawing from examples in birds and social insects, we identify two insights into brood parasitism that stem from inclusive fitness theory. First, the kin structure within nests, or between neighbouring nests, can create a niche space favouring the evolution of conspecific parasitism. For example, low average relatedness within social insect nests can increase selection for reproductive cheats. Likewise, high average relatedness between adjacent nests of some birds can increase a female's tolerance of parasitism by her neighbour. Second, intrabrood conflict will be high in parasitized broods, from the perspective of both parasite and host young, relative to unparasitized broods. We also discuss offspring recognition by hosts as an example of discrimination in a kin-selected social behaviour. We conclude that the inclusive fitness framework is instructive for understanding aspects of brood parasite and host evolution. In turn, brood parasites present some unique opportunities to test the predictions of inclusive fitness theory.This article is part of the theme issue ‘The coevolutionary biology of brood parasitism: from mechanism to pattern’.

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