Phylogenetic Relationships of Hippolytid Genera, With an Assignment of New Families for the Crangonoidea and Alpheoidea (Crustacea, Decapoda, Caridea)

Christoffersen, Martin Lindsey

doi:10.1111/j.1096-0031.1987.tb00898.x

Cited by 43 publications

(62 citation statements)

References 29 publications

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“…72). The highly derived Ogyrididae appear to be sister group to the Alpheidae (see also Christoffersen 1987).…”

Section: Monophyly Of the Alpheidaementioning

confidence: 99%

“…Despite extensive effort (e.g., Banner and Banner 1973, 1975, 1982 Chace 1988;Christoffersen 1979), all larger genera await revision. Cryptic species occur in many genera, notably in the two most speciose genera, Alpheus (>400 species) and Synalpheus (>150 species) (e.g., Knowlton and Keller 1985;Knowlton and Mills 1992;Duffy 1996; Anker 2001a;Nomura and Anker 2005), and most cryptic species complexes remain unresolved (Anker 2001a).…”

Section: Alpheid Evolutionary Relationshipsmentioning

confidence: 99%

“…His subdivision of Synalpheus into seven species groups (Coutiere 1909) was less well received as only three remain in use (Banner and Banner 1975). Christoffersen (1987Christoffersen ( , 1990) advanced the first family-level phylogeny of caridean shrimps based on a cladistic analysis of morphological characters and proposed several new families, including the Pterocarididae for the peculiar monotypic genus Pterocaris. Christoffersen (1990) was unable to satisfyingly place another odd monotypic genus, Yagerocaris, which Chace and Kensley (1992) eventually transferred from the Hippolytidae to the Alpheidae.…”

Section: Alpheid Snapping Claws and Morphological Diversitymentioning

confidence: 99%

“…Thompson 1967;Christoffersen 1987), we used four outgroups to root our analyses: Pandalopsis (Pandalidae, Pandaloidea), Ambidexter (Processidae, Processoidea), Ogyrides (Ogyrididae, Alpheoidea), and Lysmata (Hippolytidae, Alpheoidea). Representatives of the two alpheoid families were included to test for alpheid monophyly.…”

Section: Outgroup Taxamentioning

confidence: 99%

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Morphological Phylogeny of Alpheid Shrimps: Parallel Preadaptation and the Origin of a Key Morphological Innovation, the Snapping Claw

Anker¹,

Ahyong²,

Noël³

et al. 2006

Evol

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Abstract.-The Alpheidae-possibly the most diverse family of recent decapod crustaceans-offers attractive opportunities to study the evolution of many intriguing phenomena, including key morphological innovations like spectacular snapping claws, highly specialized body forms, facultative and obligate symbioses with many animal groups, and sophisticated behaviors like eusociality. However, studies of these remarkable adaptations remain hampered by insufficient phylogenetic information. We present the first phylogenetic hypothesis of relationships among 36 extant genera of alpheid shrimps, based on a cladistic analysis of 122 morphological characters from 56 species, and we use this hypothesis to explore evolutionary trends in morphology and species diversity. Our results strongly supported a monophyletic Alpheidae that included two hitherto difficult-to-place genera (Yagerocaris and Pterocaris). Of 35 + nodes among genera, all were supported by at least one morphological character (24 were supported by two or more) and 17 received greater than 50% jackknife support. Unfortunately, many basal nodes were only weakly supported. Six genera appeared nonmonophyletic, including the dominant genus Alpheus (paraphyletic due to inclusion of one clade with three minor genera). Evolutionary trends in alpheid claw form shed some revealing light on how key innovations evolve. First, several functionally significant features of the cheliped (claw bearing leg) evolved independently multiple times, including: asymmetry, folding, inverted orientation, sexual dimorphism, adhesive plaques that enhance claw cocking, and tooth-cavity systems on opposing claw fingers, a preadaptation for snapping. Many conspicuous features of alpheid claw form therefore appear prone to parallel evolution. Second, although tooth-cavity systems evolved multiple times, a functional snapping claw, which likely facilitated an explosive radiation of over 550 species, evolved only once (in Synalpheus + [Alpheus + satellite genera]). Third, adhesive plaques (claw cocking aids) also evolved multiple times, and within snapping alpheids are associated with the most diverse clade (Alpheus + derivative genera). This pattern of parallel preadaptation-multiple independent evolutionary origins of precursors (preadaptations) to what ultimately became a key innovation (adaptation)-suggests alpheid shrimp claws are predisposed to develop features like tooth-cavity and adhesive plaque systems for functional or developmental reasons. Such functional/developmental predisposition may facilitate the origin of key innovations. Finally, moderate orbital hoods-anterior projections of the carapace partly or completely covering the eyes-occur in many higher Alpheidae and likely evolved before snapping claws. They are unique among decapod crustaceans, and their elaboration in snapping alpheids suggests they may protect the eyes from the stress of explosive snaps. Thus one key innovation (orbital hoods) may have facilitated evolution of a second (snapping claws).Key words.-Alpheidae...

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“…72). The highly derived Ogyrididae appear to be sister group to the Alpheidae (see also Christoffersen 1987).…”

Section: Monophyly Of the Alpheidaementioning

confidence: 99%

Section: Alpheid Evolutionary Relationshipsmentioning

confidence: 99%

Section: Alpheid Snapping Claws and Morphological Diversitymentioning

confidence: 99%

Section: Outgroup Taxamentioning

confidence: 99%

See 2 more Smart Citations

Morphological Phylogeny of Alpheid Shrimps: Parallel Preadaptation and the Origin of a Key Morphological Innovation, the Snapping Claw

Anker¹,

Ahyong²,

Noël³

et al. 2006

Evol

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show abstract

“…Family Barbouriidae Christoffersen, 1987 Janicea antiguensis (Chace, 1972) ( Fig. 2A) Material examined: 1 female (pocl 7.6), Arrecife Alacranes, 10 Aug. 2009, 22°23'8.88"N 89°42'1.65"W, on reef wall, below 17 m depth, nocturnal dive, fcn NS-178 (OUMNH.ZC.2012.11.001); 1 male (pocl 5.6), Arrecife Alacranes, 10 Aug. 2009, 22°23'28.89"N 89°42'13.79"W, nocturnal dive, on reef wall, at 19m depth, fcn NS-215 (OUMNH.ZC.2012.11.002).…”

Section: Systematicsmentioning

confidence: 99%