Web Costs and Web Defense in the Parsnip Webworm (Lepidoptera: Oecophoridae)

Berenbaum, May R.; Green, Ellen S.; Zangerl, Arthur R.

doi:10.1093/ee/22.4.791

Cited by 46 publications

(35 citation statements)

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“…Like many other caterpillars, T. or invests in building a leaf shelter, which provides a more stable microclimate, protection from predators and displacement, and enhanced quality of food (Fukui, 2001). Shelters are also costly, requiring time, energy and material to build (Ruggiero & Merchant, 1986;Fitzgerald et al, 1991;Berenbaum et al, 1993;Cappuccino, 1993;Fitzgerald & Clark, 1994). Many caterpillars have evolved ways to maintain the use of their shelters while minimizing their costs, such as using empty shelters, attempting take over of occupied shelters, or by sharing them with con-and heterospecifics (Berenbaum et al, 1993;Cappuccino, 1993;Lill et al, 2007).…”

Section: Do Mandible Scrapes Function In Territorial Behaviour?mentioning

confidence: 99%

“…Shelters are also costly, requiring time, energy and material to build (Ruggiero & Merchant, 1986;Fitzgerald et al, 1991;Berenbaum et al, 1993;Cappuccino, 1993;Fitzgerald & Clark, 1994). Many caterpillars have evolved ways to maintain the use of their shelters while minimizing their costs, such as using empty shelters, attempting take over of occupied shelters, or by sharing them with con-and heterospecifics (Berenbaum et al, 1993;Cappuccino, 1993;Lill et al, 2007). Shelter sharing, however, often has associated costs and is not always favourable (Cappuccino, 1993;Lill et al, 2007).…”

Section: Do Mandible Scrapes Function In Territorial Behaviour?mentioning

confidence: 99%

“…In some lepidopteran larvae defense of leaf shelters involves mainly physical aggression, and in some cases this can escalate to serious injury or death of one of the contestants (Weyh & Maschwitz, 1982;Okuda, 1989;Baker, 1983;Berenbaum et al, 1993). Territorial behaviour in T. or therefore could represent an intermediate form between species that use only physical aggression, and those using only ritualized aggression (i.e., signaling).…”

Section: Evolutionary Origins Of Vibratory Territorial Signalsmentioning

confidence: 99%

“…As such, caterpillars that expend time, energy and material (silk) constructing their own shelters may be expected to defend these valuable commodities from intruding conand heterospecifics. Caterpillars have been reported to defend resources using physical aggression, including striking with the head (e.g., Oecophoridae, Depressaria pastinacella Duponchel: Berenbaum et al, 1993), biting (e.g., Noctuidae, Busseola fusca Fuller: Okuda, 1989) and even killing their opponents (e.g., Pieridae, Anthocharis cardamines L.: Baker, 1983). In addition to using physical combat, there is evidence that some species use vibratory warning signals in the context of territory defense (see references below).…”

Section: Introductionmentioning

confidence: 99%

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Vibratory territorial signals in caterpillars of the poplar lutestring, Tethea or (Lepidoptera: Drepanidae)

Scott¹,

Yack²

2012

Eur. J. Entomol.

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Abstract. Caterpillars of the poplar lutestring moth, Tethea or, construct leaf shelters that they defend against intruding conspecifics using a combination of vibratory signals and physical aggression. Staged interactions between a resident caterpillar and introduced conspecific were recorded with a video camera and laser vibrometer. Residents crawl towards the intruder and perform three behaviours: lateral hitting, pushing, and mandible scraping. Vibrations caused by mandible scraping result from the caterpillar repeatedly scraping opened mandibles laterally against the leaf surface in bouts lasting 1.16 ± 0.39 s, with an average of 4 ± 1 scrapes per bout. We propose that these scrapes function in leaf shelter defense against conspecifics for the following reasons: Mandible scrapes are produced only by residents; they are generated when a resident is approached by an intruder; the rate of scraping increases as the intruder approaches the shelter; and residents in all trials retain their shelters, with the intruder leaving the leaf within 127.9 ± 104.3 s from the beginning of the trial. The function and evolutionary origins of vibration-mediated territoriality in caterpillars are discussed.

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Section: Do Mandible Scrapes Function In Territorial Behaviour?mentioning

confidence: 99%

Section: Do Mandible Scrapes Function In Territorial Behaviour?mentioning

confidence: 99%

Section: Evolutionary Origins Of Vibratory Territorial Signalsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Vibratory territorial signals in caterpillars of the poplar lutestring, Tethea or (Lepidoptera: Drepanidae)

Scott¹,

Yack²

2012

Eur. J. Entomol.

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“…This selective pressure might explain their tendency to enter pre-existing silk (Edgerly 1987b), and the safety provided by silk might counterbalance the risk of higher concentrations of egg parasites. In contrast to this embiopteran system, silk that is expensive to produce seems to be the reason why aggressive attacks are elicited when caterpillars attempt to join resident silk spinners in Depressaria pastinacella (Berenbaum et al 1993).…”

Section: Facultatively Colonial: Benefits and Risksmentioning

confidence: 99%

Relating the Cost of Spinning Silk to the Tendency to Share It for Three Embiids with Different Lifestyles (Order Embiidina: Clothodidae, Notoligotomidae, and Australembiidae)

2006

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Is the existence of a mutualistic relationship between Lobesia botrana and Botrytis cinerea well‐founded?

Moosavi

Cargnus

Torelli

et al. 2020

Arch Insect Biochem Physiol

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Some studies have highlighted benefits for Lobesia botrana by adding Botrytis cinerea mycelium to an artificial larval diet and have suggested a mutualistic relationship between the two organisms on grapevine, hypothesizing that fungal sterols were the nutritional factor involved. Because the nutritional quality of an artificial diet should be similar to grapes to allow extrapolation of the results to the field conditions, in the current study L. botrana larval performance was compared when larvae were fed on grapes (berries) or two artificial diets either with or without enrichment with B. cinerea. Based on sterol analysis, the two artificial diets had high cholesterol content, but relative to berries showed comparable and low phytosterol contents, respectively (high‐ and low‐phytosterol, HPh, and LPh). While larval fitness on the HPh diet was similar to berries, the LPh diet led to higher mortality and worse larval performance. The addition of the fungus compensated for the shortage in the LPh diet but did not improve the HPh diet. Supplementing the LPh diet with linoleic acid, which is supplied also from B. cinerea, partially improved larval performance. In a field experiment, females did not show any egg‐laying preferences towards naturally botrytized bunches. The positive effect of B. cinerea on the moth's next generation that is reported in the literature could be a consequence of fungus developed inside berry tunnels bored by larvae. Therefore, based on our data and previous reports the existence of a mutualistic relationship between L. botrana and B. cinerea is not well‐founded.

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Web Costs and Web Defense in the Parsnip Webworm (Lepidoptera: Oecophoridae)

Cited by 46 publications

References 0 publications

Vibratory territorial signals in caterpillars of the poplar lutestring, Tethea or (Lepidoptera: Drepanidae)

Vibratory territorial signals in caterpillars of the poplar lutestring, Tethea or (Lepidoptera: Drepanidae)

Relating the Cost of Spinning Silk to the Tendency to Share It for Three Embiids with Different Lifestyles (Order Embiidina: Clothodidae, Notoligotomidae, and Australembiidae)

Is the existence of a mutualistic relationship between Lobesia botrana and Botrytis cinerea well‐founded?

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