Molecular systematics of the wolf spider genus Lycosa (Araneae: Lycosidae) in the Western Mediterranean Basin

Planas, Enric; Fernández-Montraveta, Carmen; Ribera, Carles

doi:10.1016/j.ympev.2013.02.006

Cited by 38 publications

(31 citation statements)

References 76 publications

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“…In a field experiment, we confined 99 males and 80 females of the Iberian tarantula Lycosa hispanica (formerly, L. tarantula for the Iberian Peninsula – Planas et al. ) in enclosures. We studied the occurrence of mating and pre‐mating cannibalism of females with no mating history (i.e.…”

Section: Introductionmentioning

confidence: 99%

Does Female Personality Determine Mate Choice Through Sexual Cannibalism?

et al. 2013

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Animal personalities (e.g. consistent across-context behavioural differences between individuals) can lead to differences in mate choice. However, evidence for this link remains limited. Pre-mating sexual cannibalism can be a behavioural syndrome (i.e. a suboptimal personality) in which adaptive female aggression towards heterospecific prey spills over on non-adaptive aggression towards courting males, independently of the female mating or feeding status (i.e. the 'aggressive spillover hypothesis', ASH). On the other hand, sexual cannibalism can also be a form of mate choice by which females selectively kill or mate with males depending on the male phenotype. We introduce the hypothesis that the most aggressive females in the population will not only attack males more frequently, but will be less likely to impose sexual selection on males through sexual cannibalism. Assuming that in a field common garden experiment in which females were fed ad libitum the rate of weight gain by a female may reflect her voracity or aggressiveness, we show that in the cannibalistic burrowing wolf spider Lycosa hispanica (formerly L. tarantula), voracity towards heterospecific prey predicts a female's tendency towards sexual cannibalism. Unmated females with higher weight gains were more cannibalistic and attacked males regardless of the male phenotype. On the other hand, females that were less voracious tended to be less cannibalistic, and when they did kill a male, they were selective, killing males in poorer condition and mating with those in better condition. Our results demonstrate that females with different phenotypes (growth rates) differently imposed selection on male condition, tentatively supporting the hypothesis that female aggression levels can spill over on sexual selection through sexual cannibalism.Ethology 120 (2014) 238-248

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Section: Introductionmentioning

confidence: 99%

Does Female Personality Determine Mate Choice Through Sexual Cannibalism?

et al. 2013

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“…Firstly, we used a gene widely employed in spider systematics as a marker of deep and shallow relationships across (Wheeler et al ., ) and within (Murphy et al ., ) spider families, as well as within genera (Planas et al ., ). Secondly, the clusters within our tree ( Lycosa / Pavacosa and Aglaoctenus ) showed that this marker establishes the same phylogenetic relationships as other analyses (e.g.…”

Section: Discussionmentioning

confidence: 97%

Web building and silk properties functionally covary among species of wolf spider

Lacava

Camargo

García

et al. 2018

J of Evolutionary Biology

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Although phylogenetic studies have shown covariation between the properties of spider major ampullate (MA) silk and web building, both spider webs and silks are highly plastic so we cannot be sure whether these traits functionally covary or just vary across environments that the spiders occupy. As MaSp2-like proteins provide MA silk with greater extensibility, their presence is considered necessary for spider webs to effectively capture prey. Wolf spiders (Lycosidae) are predominantly non-web building, but a select few species build webs. We accordingly collected MA silk from two web-building and six non-web-building species found in semirural ecosystems in Uruguay to test whether the presence of MaSp2-like proteins (indicated by amino acid composition, silk mechanical properties and silk nanostructures) was associated with web building across the group. The web-building and non-web-building species were from disparate subfamilies so we estimated a genetic phylogeny to perform appropriate comparisons. For all of the properties measured, we found differences between web-building and non-web-building species. A phylogenetic regression model confirmed that web building and not phylogenetic inertia influences silk properties. Our study definitively showed an ecological influence over spider silk properties. We expect that the presence of the MaSp2-like proteins and the subsequent nanostructures improves the mechanical performance of silks within the webs. Our study furthers our understanding of spider web and silk co-evolution and the ecological implications of spider silk properties.

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“…Alopecosa, Geolycosa, Lycosa and Trochosa are largely Northern Hemisphere Lycosinae and reasonably well diagnosed (e.g. Lugetti and Tongiorgi 1969;Dondale and Redner 1979;Dondale and Redner 1990;Zyuzin and Logunov 2000;Kovblyuk et al 2012;Planas et al 2013). Based on these reviews, Australian representatives of these genera are taxonomically misplaced and therefore Costacosa is not diagnosed against these here.…”

Section: Diagnosismentioning

confidence: 88%

Costacosa, a new genus of wolf spider (Araneae, Lycosidae) from coastal north-west Western Australia

Framenau¹,

Leung²

2013

Rec West Aust Mus Sup

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-A new genus of wolf spider (family Lycosidae Sundevall, 1833), Costacosa gen. nov. is described from north-west Western Australia to include C. torbjorni sp. nov. (type species) and C. dondalei sp. nov. The genus belongs to the subfamily Lycosinae Sundevall, 1833 and differs from all other Australian genera in this subfamily with similar somatic morphology, in particular Venator Hogg, 1900 and Knoelle Framenau, 2006, mainly in genitalic characters. The tegular apophysis of the male pedipalp has a pronounced ventral spur, a distinct ventral edge of species-specific shape and serrations along its apical edge. The female epigyne has an elongated triangular atrium and the medium septum is longer than the posterior transverse part. Costacosa are medium-sized wolf spiders of overall brown colouration and with broad light median and sublateral bands on the carapace and a black patch in the frontal two-thirds of the venter. Costacosa torbjorni is the most commonly recorded wolf spider on Barrow Island, from where currently seven species of Lycosidae are known.

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Molecular systematics of the wolf spider genus Lycosa (Araneae: Lycosidae) in the Western Mediterranean Basin

Cited by 38 publications

References 76 publications

Does Female Personality Determine Mate Choice Through Sexual Cannibalism?

Does Female Personality Determine Mate Choice Through Sexual Cannibalism?

Web building and silk properties functionally covary among species of wolf spider

Costacosa, a new genus of wolf spider (Araneae, Lycosidae) from coastal north-west Western Australia

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