Phylogenetic evidence for an ancient rapid radiation of Caribbean sponge-dwelling snapping shrimps (Synalpheus)

Morrison, Cheryl L.; Rı́os, Rubén; Duffy, J. Emmett

doi:10.1016/s1055-7903(03)00252-5

Cited by 104 publications

(135 citation statements)

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“…Our analysis is based on sponge-dwelling shrimp specimens collected in the vicinity of Carrie Bow Cay, Belize, between 1990and 2004(Macdonald et al 2006. The dataset was restricted to Belize because this is the only site from which we have detailed ecological, morphological and phylogenetic data for the same set of species; the set includes 20 of the more than 35 known species (Macdonald et al 2006;Ríos & Duffy 2007) from the gambarelloides (spongedwelling) species group of Synalpheus in the West Atlantic, including nearly all of the most common species.…”

Section: Methodsmentioning

confidence: 99%

“…To factor out effects of common ancestry, we computed phylogenetically independent contrasts (Felsenstein 1985), implemented with the phylogenetic diversity analysis programs (PDAPs) (Midford et al 2005) module in the program MESQUITE . We based our tests on a new phylogeny (figure 1) obtained from a Bayesian analysis of the dataset used in the most recent examination of Synalpheus relationships (Morrison et al 2004). The data included a sequence alignment from Morrison et al (2004) of 1067 genetic characters from portions of the mitochondrial cytochrome c oxidase subunit I and 16S rRNA genes, as well as 66 morphological characters.…”

Section: (D) Quantifying Socialitymentioning

confidence: 99%

“…Phylogenetic tree of selected West Atlantic Synalpheus species. The tree is a consensus of 24 000 trees from a Bayesian phylogenetic analysis of combined COI, 16S, and morphological characters (data from Morrison et al 2004). Numbers represent Bayesian posterior probabilities for clades with probabilities more than 50%.…”

Section: (D) Quantifying Socialitymentioning

confidence: 99%

“…Tropical sponge-dwelling shrimp (Synalpheus) offer a valuable window on the early evolution of eusociality because of their recent radiation (less than 6 Ma, Morrison et al 2004), ecological uniformity, and variation in life history and social organization (Duffy 2007). Unusually among animal taxa, social organization in the single genus Synalpheus ranges from heterosexual pairs, to groups with multiple breeders, to eusocial colonies that can contain more than 300 individuals with a single breeding female (the queen), along with sterile workers (Tó th & Bauer 2007) and in some cases morphological castes (Duffy & Macdonald 1999); eusociality has arisen at least three times within the genus (Duffy et al 2000;Duffy 2007).…”

Section: Introductionmentioning

confidence: 99%

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Kin structure, ecology and the evolution of social organization in shrimp: a comparative analysis

2009

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Eusocial societies present a Darwinian paradox, yet they have evolved independently in insects, mole-rats and symbiotic shrimp. Historically, eusociality has been thought to arise as a response to ecological challenges, mediated by kin selection, but the role of kin selection has recently been questioned. Here we use phylogenetically independent contrasts to test the association of eusociality with ecological performance and genetic structure (via life history) among 20 species of sponge-dwelling shrimp (Synalpheus) in Belize. Consistent with hypotheses that cooperative groups enjoy an advantage in challenging habitats, we show that eusocial species are more abundant, occupy more sponges and have broader host ranges than nonsocial sister species, and that these patterns are robust to correction for the generally smaller body sizes of eusocial species. In contrast, body size explains less or no variation after accounting for sociality. Despite strong ecological pressures on most sponge-dwellers, however, eusociality arose only in species with non-dispersing larvae, which form family groups subject to kin selection. Thus, superior ability to hold valuable resources may favour eusociality in shrimp but close genetic relatedness is nevertheless key to its origin, as in other eusocial animals.

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Section: Methodsmentioning

confidence: 99%

Section: (D) Quantifying Socialitymentioning

confidence: 99%

Section: (D) Quantifying Socialitymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Kin structure, ecology and the evolution of social organization in shrimp: a comparative analysis

2009

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“…Phylogeny-based analysis of diversifi cation provides some limited evidence for increasing speciation through time (e.g. Barraclough and Vogler 2002 ;Linder et al 2003 ;Turgeon et al 2005 ), but again, a scenario of rapid radiation followed by a decline in speciation rate over time appears to be more common (Harmon et al 2003 ;Shaw et al 2003 ;Kadereit et al 2004 ;Machordom and Macpherson 2004 ;Morrison et al 2004 ;Williams and Reid 2004 ;Xiang et al 2005 ;Kozak et al 2006 ;Weir 2006 ;Phillimore and Price 2008 ;Scantlebury 2013 ). This pattern could be linked to a density-dependent model of ecological opportunity and/or refl ect punctual mass extinctions (e.g.…”

Section: Speciation and Extinction As Two Natural Processesmentioning

confidence: 99%

Reconsidering the Loss of Evolutionary History: How Does Non-random Extinction Prune the Tree-of-Life?

Yessoufou

Davies

2016

Topics in Biodiversity and Conservation

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Analysing extinction within a phylogenetic framework may seem counter-intuitive because extinction is a priori a non-heritable trait. However, extinction risk is correlated with other traits, such as body size, that show a strong phylogenetic signal. Further, there has been much effort in identifying key traits important for diversifi cation, and recent evidence has demonstrated that the processes of speciation and extinction may be inextricably linked. A phylogenetic approach also allows us to quantify the impact of extinction, for example, as the loss of branches from the tree-of-life. Early work suggested that extinctions might result in little loss of evolutionary history, but subsequent studies indicated that nonrandom extinctions might prune more of the evolutionary tree. Loss of phylogenetic diversity might have ecosystem consequences because functional differences between species tend to be correlated with the evolutionary distances between them. Here we explore how extinction prunes the tree-of-life. Our review indicates that the loss of evolutionary history under non-random extinction (the emerging pattern in extinction biology) might be less pronounced than some previous studies have suggested. However, the loss of functional diversity might still be large, depending on the evolutionary model of trait change. Under a punctuated model of evolution, in which trait differences accrue in bursts at speciation, the number of branches lost is more important than their summed lengths. We suggest that evolutionary models need to be incorporated more explicitly into measures of phylogenetic diversity if we are to use phylogeny as a proxy for functional diversity.

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Evidence of constant diversification punctuated by a mass extinction in the African cycads

Yessoufou

Bamigboye

Daru

et al. 2013

Ecology and Evolution

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The recent evidence that extant cycads are not living fossils triggered a renewed search for a better understanding of their evolutionary history. In this study, we investigated the evolutionary diversification history of the genus Encephalartos, a monophyletic cycad endemic to Africa. We found an antisigmoidal pattern with a plateau and punctual explosive radiation. This pattern is typical of a constant radiation with mass extinction. The rate shift that we found may therefore be a result of a rapid recolonization of niches that have been emptied owing to mass extinction. Because the explosive radiation occurred during the transition Pliocene–Pleistocene, we argued that the processes might have been climatically mediated.

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Phylogenetic evidence for an ancient rapid radiation of Caribbean sponge-dwelling snapping shrimps (Synalpheus)

Cited by 104 publications

References 53 publications

Kin structure, ecology and the evolution of social organization in shrimp: a comparative analysis

Kin structure, ecology and the evolution of social organization in shrimp: a comparative analysis

Reconsidering the Loss of Evolutionary History: How Does Non-random Extinction Prune the Tree-of-Life?

Evidence of constant diversification punctuated by a mass extinction in the African cycads

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