Modification of Tetragnatha montana (Araneae, Tetragnathidae) web architecture induced by larva of the parasitoid Acrodactyla quadrisculpta (Hymenoptera, Ichneumonidae, Polysphincta genus-group)

Korenko, Stanislav; Korenková, Barbora; Satrapová, Jitka; Hamouzová, Kateřina; Belgers, Dick

doi:10.1186/s40555-015-0119-6

Cited by 14 publications

(8 citation statements)

References 18 publications

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“…As in cocoon webs of T. clavipes, the reduction of web components associated with prey interception and retention is the main characteristic of cocoon webs spun by C. citricola. This alteration may reduce the risks of web destruction by struggling insects and is often observed in cocoon webs spun by several hosts of polysphinctines (e.g., Eberhard 2000;Sobczak 2007, 2011;Korenko et al 2015;Gonzaga et al 2016).…”

Section: Discussionmentioning

confidence: 99%

Inclusion of an alien species in the host range of the Neotropical parasitoid Hymenoepimecis bicolor (Brullé, 1846) (Hymenoptera, Ichneumonidae)

Gonzaga¹,

Pádua²,

Quero³

2022

JHR

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In this study we report the first case of an introduced alien host spider species being parasitized and manipulated by an ichneumonid wasp. Hymenoepimecis bicolor, previously described parasitizing exclusively Trichonephila clavipes (Araneidae), was observed parasitizing the European species Cyrtophora citricola (Araneidae) in southeastern Brazil. The cocoon web built by the parasitized spider is composed of a reduced horizontal sheet, which maintains the radial structure. The reduced number of radii and spirals probably reduce the chances of insect interception by these modified structures. In addition, the density of supporting threads is apparently very different between normal and modified webs. The cocoon web spun by C. citricola lacks the protective barrier structure usually observed in cocoon webs spun by parasitized females of T. clavipes. Our observations are in agreement with several predictions of the ecdysteroid hypothesis and represent an interesting opportunity for further investigation of interactions between these parasitoids and their spider hosts.

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Section: Discussionmentioning

confidence: 99%

Inclusion of an alien species in the host range of the Neotropical parasitoid Hymenoepimecis bicolor (Brullé, 1846) (Hymenoptera, Ichneumonidae)

Gonzaga¹,

Pádua²,

Quero³

2022

JHR

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“…All web‐building manipulations that have been recorded so far in other species of the Polysphincta genus‐group have been found to be species‐specific, with each wasp species typically causing one particular alteration in the web architecture of its host (e.g. Korenko & Pekár, ; Korenko et al ., , ,b, ; Sobczak et al ., ; Messas et al ., ), even though one spider species is sometimes attacked by several parasitoid wasp species (Gonzaga et al ., ; Eberhard, ). The high plasticity in both host range and host manipulation in Z. kauros is unusual and might indicate a complex of several, more specialised cryptic species.…”

Section: Discussionmentioning

confidence: 99%

“…In the first, the spider host is forced to build an additional or completely new, three‐dimensional silk barrier as a shelter for the wasp pupa (Matsumoto, ; Korenko & Pekár, ; Korenko et al ., ). In the second, the manipulated spider reduces the normal web to a simple and sparse, but strong silk construction (Eberhard, , ; Korenko et al ., ; Takasuka et al ., , ; Kloss et al ., ). These modifications of the web structure into a more persistent cocoon web ascertain that the wasp can pupate safely after the spider's death (e.g.…”

Section: Introductionmentioning

confidence: 98%

One generalist or several specialist species? Wide host range and diverse manipulations of the hosts’ web‐building behaviour in the true spider parasitoidZatypota kauros(Hymenoptera: Ichneumonidae)

Korenko

Spasojevic

Pekár

et al. 2018

Insect Conserv Diversity

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1. Parasitoid wasps of the Polysphincta genus-group are highly specialised on their spider hosts, and most of them are known to manipulate their hosts into building a special web in which the parasitoid pupates. Trophic niche and the plasticity of host use were investigated in the koinobiont parasitoid Zatypota kauros Gauld from Queensland, Australia.2. We found that Z. kauros attacks spider hosts from different families, each differing widely in their web-building behaviours, which makes it unique in the breadth of its host range. Molecular analyses revealed that the taxon Z. kauros contains three divergent mitochondrial lineages. Lineage A was associated exclusively with spiders of the genus Anelosimus (Theridiidae), which builds tangle webs; lineage B was associated with the genus Cyrtophora (Araneidae), which weaves tent webs; and lineage C was associated with a broad range of hosts, including spiders of both the families Araneidae and Theridiidae. Unique host manipulations could be observed in the web-building behaviours of the different host groups. Nevertheless, nuclear data from two ribosomal genes and three introns did not add any support to the existence of different evolutionary lineages, nor did they coincide with the different host groups.3. The partial correspondence of mitochondrial lineage and host use, together with an apparent mito-nuclear conflict might indicate maternal effects or very recent and/or incomplete speciation in this taxon. Given their wide host range and intriguing interactions with their hosts, the Z. kauros complex represents a promising system for studying parasitoid specialisation and its potential impact on speciation.

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“…a), as protection against predators. Some species of Acrodactyla induce their host to form a somewhat modified web consisting of some irregularly spun horizontal threads, or strongly modified into single repeatedly accumulated linear threads (Korenko et al , ; R. Matsumoto, personal observation, Fig. c).…”

Section: Discussionmentioning

confidence: 99%

Molecular phylogeny and systematics of the Polysphincta group of genera (Hymenoptera, Ichneumonidae, Pimplinae)

Matsumoto

2016

Systematic Entomology

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The phylogenetic relationships between genera of the Polysphincta group of Pimplinae (Ichneumonidae) were surveyed using molecular markers, partial sequences of cytochrome c oxidase I (COI), 28S rRNA and elongation factor 1α, and maximum likelihood and Bayesian approaches to obtain a robust phylogenetic hypothesis to understand the evolution of the group. The Polysphincta group was recovered as monophyletic, although relationships between genera were different from previous hypotheses based on morphological data. Within the Polysphincta group, three major clades were recognized and phylogenetic relationships among them were well resolved as (Schizopyga subgroup + (Acrodactyla subgroup + Polysphincta subgroup)). The Schizopyga subgroup consisted of the genera Piogaster, Schizopyga, Zabrachypus and Brachyzapus. As the genus Schizopyga was found to be polyphyletic, the genus Dreisbachia, which had been synonymized under Schizopyga, was resurrected and Iania gen.n. is proposed for Dreisbachia pictifrons, to maintain monophyletic genera. Species of the Schizopyga subgroup utilize spiders constructing egg‐laying chambers or funnel webs as hosts. The genus Piogaster was not recovered as the sister to all other members of the genus group, unlike previous hypotheses, but was nested in this clade as (Zabrachypus + ((Brachyzapus + Schizopyga) + (Dreisbachia + (Iania + Piogaster)))). Members of the Acrodactyla and Polysphincta subgroups attack spiders that weave aerial webs. The host range of the former is centred on tetragnathid and linyphiid spiders, the host range of the latter seems to centre mainly on orb‐weaving araneids and partly on theridiids weaving three‐dimensional (3D) irregular webs. Based on the obtained phylogeny of the group, the evolution of larval and cocoon morphology, and the mode of parasitism are discussed. Acrodactyla varicarinata Uchida & Momoi and A. inoperta Kusigemati are transferred to the genus Megaetaira (comb.n.). This published work has been registered in ZooBank, http://zoobank.org/urn:lsid:zoobank.org:pub:0AB1086F-9F23-4057-B7ED-3A3943E19C61.

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Modification of Tetragnatha montana (Araneae, Tetragnathidae) web architecture induced by larva of the parasitoid Acrodactyla quadrisculpta (Hymenoptera, Ichneumonidae, Polysphincta genus-group)

Cited by 14 publications

References 18 publications

Inclusion of an alien species in the host range of the Neotropical parasitoid Hymenoepimecis bicolor (Brullé, 1846) (Hymenoptera, Ichneumonidae)

Inclusion of an alien species in the host range of the Neotropical parasitoid Hymenoepimecis bicolor (Brullé, 1846) (Hymenoptera, Ichneumonidae)

One generalist or several specialist species? Wide host range and diverse manipulations of the hosts’ web‐building behaviour in the true spider parasitoidZatypota kauros(Hymenoptera: Ichneumonidae)

Molecular phylogeny and systematics of the Polysphincta group of genera (Hymenoptera, Ichneumonidae, Pimplinae)

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