دانلود رایگان مقاله لاتین تکامل خرچنگ خزنده از سایت الزویر
عنوان فارسی مقاله:
تکامل شخصیت کلیدی، و یا چگونگی تکامل خرچنگ خزنده
عنوان انگلیسی مقاله:
The evolution of a key character, or how to evolve a slipper lobster
سال انتشار : 2015
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مقدمه انگلیسی مقاله:
1. Introduction
Distinct morphotypes have been discussed repeatedly within Decapoda in recent years, with a focus on evolutionary scenarios leading to these morphotypes. A particularly ‘hot’ topic has been the process of ‘carcinisation’, or the evolution of the ‘crab’ morphotype, respectively, the evolution of a crab-like habitus (e.g. McLaughlin and Lemaitre, 1997; McLaughlin et al., 2004; Hiller et al., 2010; Tsang et al., 2011; Scholtz, 2014). In evolutionary terms, any form of crab has evolved from an ancestral macruran or “lobster” morphotype. An interesting and much less studied case of departure from the simple “lobster” morphotype are the slipper lobsters, or scyllarids, easily differentiable from other decapod lobsters due to their unique morphology (e.g. Jones, 1990). The group Scyllaridae forms a sharply characterised natural group, distinguished by wide and flat segments of the peduncle of the antennae (a2, second antennae) and by having the antennal flagellum transformed to a single broad and flat element without a trace of articulation. Scyllarid lobsters can be considered to represent a distinct ‘morphotype’ (note that the term used here is more or less equivalent what other authors term ‘bauplan’; yet this has a quite difficult meaning in German), and this is especially apparent when comparing them to their closest relatives, the palinurid lobsters (e.g. Palero et al., 2009; Bracken-Grissom et al., 2014). Scyllaridae and Palinuridae form together Achelata (Scholtz and Richter, 1995), characterized by the lack of true claws (i.e. no index or fixed finger is opposed to the dactylus, or it is very short) and the presence of a phyllosoma larva. Contrary to the most familiar lobster types, slipper lobsters are dorsoventrally flattened, so that their cephalo-thoracic dorsal shield (also called carapace) is sometimes very wide, often square-shaped (in dorsal view) or even anteriorly widened. The dorsoventrally flattened body and, more importantly, the distinctive antennae of scyllarid lobsters must have evolved in their own evolutionary lineage. The structure of the highly specialized, shovel-like antennae of scyllarid lobsters is remarkable. According to Holthuis (1991) the basal element of the antennal peduncle is conjoined with the carapace; so it is only visible ventrally (treated as peduncle element 1 in the following). The second and third element are conjoined to a single element which is short and broad and may bear teeth on the anterior margin (treated as peduncle element 2). In most scyllarids this element is free. In Scyllarus, however, it is immovably connected with the antennular somite and the carapace, thereby forming an integral part of the orbit (Holthuis, 1985). The fourth element is large, broad and flat; it usually bears teeth on its margins (treated as peduncle element 3). The fifth segment is narrow and small; it may bear teeth on the inner margin (treated as peduncle element 4). The last element of the antenna, which represents the flagellum, is very broad and flat, sometimes with teeth on the margin. This element, together with the fourth one, is what makes the antenna into a broad, shovel-like organ for which the vernacular names ‘shovel nose shrimp’ and ‘bulldozer lobster’ are given to species of scyllarids. By providing “intermediate forms”, fossils have the potential to provide further insights in the origin of key synapomorphies, such as the scyllarid antenna. Phylogenetically expressed, early fossil representatives of a group often have only part of the apomorphies of the modern group, while still lacking others. In this way the sequence in which the specializations of a morphotype evolved can be broken down into several, more gradual evolutionary transformations (examples in Senter, 2010; Haug et al., 2010).
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کلمات کلیدی:
The evolution of a key character, or how to evolve a slipper lobster ... https://www.researchgate.net/.../281363864_The_evolution_of_a_key_character_or_ho... A new fossil lobster from the Cretaceous of Lebanon, Charbelicaris maronites gen. et sp. nov., is presented here, while the former species 'Cancrinos' libanensis ... The evolution of a key character, or how to evolve a slipper lobster https://tel.archives-ouvertes.fr/CR2P/hal-01191654v1 - Translate this page A new fossil lobster from the Cretaceous of Lebanon, Charbelicaris maronites gen. et sp. nov., is presented here, while the former species 'Cancrinos' libanensis ... Palaeo-Evo-Devo.info - News https://www.palaeo-evo-devo.info/english/news/ Haug, J. T., Audo, D., Charbonnier, S., Palero, F., Petit, G., Abi Saad, P. & Haug, C. 2016. The evolution of a key character, or how to evolve a slipper lobster. Phylogenetic relationships, character evolution, and taxonomic ... agris.fao.org/agris-search/search.do?recordID=US201500042584 by CH Yang - 2012 - Cited by 18 - Related articles Phylogenetic relationships, character evolution, and taxonomic implications within the slipper lobsters (Crustacea: Decapoda: Scyllaridae) [2012]. Yang ... The Biology and Fisheries of the Slipper Lobster https://books.google.com/books?isbn=1420005162 Kari L. Lavalli, Ehud Spanier - 2007 - Science Evolution. W. Richard Webber and John D. Booth CONTENTS 2.1 Introduction . .... 39 2.3.3.3 Implications of Life-History Characters . ... 50 Abstract The Scyllaridae (slipper lobsters) is a highly distinctive family, recognized for millennia. Additional slipper lobsters of the subfamily Scyllarinae ... - Biotaxa https://www.biotaxa.org/Zootaxa/article/view/zootaxa.3852.3.3 by CHUI YANG - 2014 - Cited by 1 - Related articles Additional slipper lobsters of the subfamily Scyllarinae Latreille, 1825 (Crustacea, ... character evolution, and taxonomic implications within the slipper lobsters ... Towards a Supertree of Arthropoda: A Species-Level Supertree of the ... journals.plos.org/plosone/article?id=10.1371/journal.pone.0140110 by KE Davis - 2015 - Cited by 1 - Related articles Oct 13, 2015 - ... a supertree of Achelata (spiny, slipper and coral lobsters) as a proof of ... character evolution, and taxonomic implications within the slipper ...
