Phylogeny and Evolution

Patek, S. N.; Feldmann, Rodney M.; Porter, Megan L.; Tshudy, Dale

doi:10.1002/9780470995969.ch4

Cited by 14 publications

(13 citation statements)

References 108 publications

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“…Both species evolved in different clades and under different environmental conditions. While the group of Homarida, which includes the lobster, is thought to have evolved in the early Triassic (~210 to 230 million yr ago [mya]), the group of Brachyura, which includes the rock crab, is thought to have evolved in the warmer Jurassic period (~150 to 210 mya; reviewed in Patek et al 2007). The different evolutionary past will likely affect physiological performance.…”

Section: Discussionmentioning

confidence: 99%

Enhancing thermal tolerance by eliminating the pejus range: a comparative study with three decapod crustaceans

Jost¹,

Podolski²,

Frederich³

2012

Mar. Ecol. Prog. Ser.

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Marine invertebrates in the intertidal and subtidal zones are often exposed to highly variable environmental conditions, especially rapid changes in temperature. The ability to survive at different temperatures has previously been described using an extended version of Shelford's law of tolerance, with optimum, pejus (Latin: 'turning worse'), and pessimum ranges, and the respective thresholds, critical (T c ) and pejus (T p ) temperatures, that mark the transition from one range into the next. The width of the pejus range, in which the scope for activity gradually declines, varies among species. We tested the hypothesis that the width of the pejus range is correlated to the temperature stability of the species' respective habitats. We used locomotor activity, heart rate, lactate accumulation, heat shock protein 70 (HSP70) levels, and the activation of AMPactivated protein kinase (AMPK) to identify T c and T p in 3 decapod crustaceans: green crab Carcinus maenas, rock crab Cancer irroratus, and lobster Homarus americanus. We found speciesspecific patterns of temperature-induced changes in all parameters, especially in HSP70 protein and AMPK activity. The width of the pejus range (between T p and T c ) was 8 to 12°C for rock crabs and 12 to 16°C for lobsters. Most importantly, green crab, the most temperature-tolerant of our 3 species and which lives in a highly variable habitat, switched directly from optimum to pessimum range, meaning that the pejus range was eliminated completely. Additionally, even lethal temperatures did not activate AMPK in green crabs, pointing to a different cellular tolerance strategy than in rock crabs and lobsters. This modified tolerance pattern might represent a broader strategy to enhance physiological tolerance in a highly variable habitat. KEY WORDS: AMP-activated protein kinase · AMPK · Heat shock protein 70 · HSP70 · Temperature stress · Critical temperatures Resale or republication not permitted without written consent of the publisherMar Ecol Prog Ser 444: 263-274, 2012 264 ranges at both extremes. T c characterizes the transition into the pessimum range. However, in its natural environment an animal is frequently exposed to suboptimal conditions, often well before T c is attained. Consequently, Frederich & Pörtner (2000) added 'pejus temperature' (T p ) and 'pejus range' (from the Latin for 'turning worse') to this concept. In the pejus range, which is between the optimum and pessimum ranges, animals can still survive, but with a reduced scope for aerobic activity. Subsequent studies have identified T p and pejus ranges in various species of marine invertebrates and fish (reviewed by Pört-ner 2010). T p and T c differ by several degrees, thus in dicating a well-defined and broad pejus range. However, the width of the pejus range appears to vary among species, and the outstanding question of whether this is associated with habitat stability needs to be addressed.In a previous study on the rock crab Cancer irroratus, we showed that T p can be identified on the cell...

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Section: Discussionmentioning

confidence: 99%

Enhancing thermal tolerance by eliminating the pejus range: a comparative study with three decapod crustaceans

Jost¹,

Podolski²,

Frederich³

2012

Mar. Ecol. Prog. Ser.

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“…However, it is most parsimonious to suggest that the stridulating apparatus initially evolved to enhance the effectiveness of tailflips. all crustaceans with the extended abdomen typical of the macruran body plan (shrimps, crayfish, lobsters) inherited the morphological capacity for tailflip escape (Holthuis 1991;Patek et al 2006). George & main (1967) also suggested a general evolutionary trend in the palinuridae of moving from relatively stable ancestral conditions in deeper waters, where more primitive lobster taxa are still found (e.g., Puerulus, Linuparus), to more varied and fluctuating conditions in shallow water habitats, where the most advanced palinurid taxa are found today (e.g., Panulirus, Justitia).…”

Section: Discussionmentioning

confidence: 99%

Sound production in Caribbean spiny lobsterPanulirus argusand its role in escape during predatory attack byOctopus briareus

Bouwma

Herrnkind

2009

New Zealand Journal of Marine and Freshwater Research

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The production of sound (commonly called stridulation) in spiny lobsters when disturbed by humans is well documented but its function during encounters with natural predators remains largely undocumented. Caribbean spiny lobsters Panulirus argus stridulate during tailflip escape attempts in response to grasping of the carapace or antennae by human divers. We hypothesised that stridulating may be effective against predators like octopus which grasp the carapace and antennae during attacks in a way similar to human divers. In this study, we examined defensive sound production during nighttime encounters with Caribbean reef octopus Octopus briareus to determine how P. argus use stridulation and whether it improves survival. In staged nighttime encounters with octopus, lobsters stridulated both during grasping attacks by octopus and after being captured and restrained. Stridulating lobsters escaped from attacking octopuses more frequently and remained uncaptured longer during encounters than experimentally muted individuals. We discuss ecological and evolutionary implications for these data in lobster species that produce sounds when grasped.

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“…True mouthparts consist of a mandible with associated palp, first and second flattened maxillae; additionaly three thoracic appendages have been modified to act as additional mouthparts (first, second, and third maxillipeds). Currently, the spiny lobsters are represented by 47 extant species in eight genera (Jasus, Justitia, Linuparus, Palinurus, Palinustus, Panulirus, Projasus, Puerulus) (Patek et al, 2006), slipper lobsters are represented by 88 species in 20 genera and four subfamilies (Arctidinae, Ibacinae, Scyllarinae, Theninae) (Burton & Davie, 2007;, synaxids are represented by 3 species in two genera (Palinurellus and Palibythus) , and polychelids are represented by 34 species in five genera (Cardus, Homeryon, Pentacheles, Polycheles, Willemoesia) (Galil, 2000;Ahyong & Brown, 2002). provides a general description and key to many of the species within Palinura, that has been updated by revisions to scyllarids (Holthuis, 2002;Burton & Davie, 2007), and polychelids (Galil, 2000).…”

Section: Table Imentioning

confidence: 99%

“…Traditional phylogenetic schemes are based on anatomical features thought to be highly conservative: antennal, maxilliped, and gill structures and mode of reproduction. These features contrast with anatomical features that are highly diverse both within and among families and more likely to be the result of ecological/environmental pressures: carapace morphology and sculpturing, and pleonal and appendage morphology (Schweitzer & Feldmann, 2000;Patek et al, 2006). Cladistic schemes using morphological data matrices Schram & Dixon, 2004) and molecular characters have resulted in the determination that the highly diverse species of so-called "lobsters" are paraphyletic, being separated into two monophyletic clades of Homarida and the highly derived Achelata Patek et al, 2006).…”

Section: Phylogeny and Biogeographymentioning

confidence: 99%

“…These features contrast with anatomical features that are highly diverse both within and among families and more likely to be the result of ecological/environmental pressures: carapace morphology and sculpturing, and pleonal and appendage morphology (Schweitzer & Feldmann, 2000;Patek et al, 2006). Cladistic schemes using morphological data matrices Schram & Dixon, 2004) and molecular characters have resulted in the determination that the highly diverse species of so-called "lobsters" are paraphyletic, being separated into two monophyletic clades of Homarida and the highly derived Achelata Patek et al, 2006). In some cladistic analyses, Palinura are a basal group separate from Polychelidae and Scyllaridae, which are sister groups that are also basal (Amati et al, 2004) (fig.…”

Section: Phylogeny and Biogeographymentioning

confidence: 99%

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Treatise on Zoology - Anatomy, Taxonomy, Biology. The Crustacea, Volume 9 Part A

Schram¹,

(²

2010

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Phylogeny and Evolution

Cited by 14 publications

References 108 publications

Enhancing thermal tolerance by eliminating the pejus range: a comparative study with three decapod crustaceans

Enhancing thermal tolerance by eliminating the pejus range: a comparative study with three decapod crustaceans

Sound production in Caribbean spiny lobsterPanulirus argusand its role in escape during predatory attack byOctopus briareus

Treatise on Zoology - Anatomy, Taxonomy, Biology. The Crustacea, Volume 9 Part A

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