<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>1405-3322</journal-id>
<journal-title><![CDATA[Boletín de la Sociedad Geológica Mexicana]]></journal-title>
<abbrev-journal-title><![CDATA[Bol. Soc. Geol. Mex]]></abbrev-journal-title>
<issn>1405-3322</issn>
<publisher>
<publisher-name><![CDATA[Sociedad Geológica Mexicana A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1405-33222018000200369</article-id>
<article-id pub-id-type="doi">10.18268/bsgm2018v70n2a7</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Análisis de rastros en el desplazamiento de cangrejos ermitaño terrestres: una ventaja al usar conchas ligeras]]></article-title>
<article-title xml:lang="en"><![CDATA[Track analysis of terrestrial hermit crabs: the advantade of using light shells]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Larrañaga]]></surname>
<given-names><![CDATA[Oscar]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Kruesi]]></surname>
<given-names><![CDATA[Karla]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Nacional Autónoma de México Facultad de Ciencias Laboratorio de Ecofisiología]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2018</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2018</year>
</pub-date>
<volume>70</volume>
<numero>2</numero>
<fpage>369</fpage>
<lpage>377</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1405-33222018000200369&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1405-33222018000200369&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1405-33222018000200369&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Para los cangrejos ermitaño, uno de los recursos más importantes es la concha de gasterópodos que portan a lo largo de su vida. Esta concha les proporciona diferentes beneficios como protección, refugio y evita la desecación. En los ermitaños semi-terrestres (Familia Coenobitidae) se presenta una conducta a través de la cual remodelan sus conchas desde el interior, incrementando el volumen interno y haciéndolas más ligeras. En este estudio se evaluaron algunas ventajas en términos de locomoción que estos organismos adquieren como resultado de este proceso de remodelación. Para esto se recolectaron cangrejos ermitaño terrestres de la especie Coenobita compressus en Playa Troncones, Guerrero. Se realizaron experimentos de locomoción en los que los cangrejos caminaron en arena húmeda ocupando conchas nuevas sin remodelar (pesadas), y conchas remodeladas (ligeras) con el fin de medir su desempeño. Se tomaron medidas de profundidad y tipo de huellas, además de la velocidad de la caminata de cada cangrejo. El resultado fue que los cangrejos que utilizaban conchas remodeladas presentaban un menor arrastre, huellas de la concha menos profundas y alcanzaron una mayor velocidad. Por lo tanto, se lograron demostrar ventajas obtenidas tras remodelar la concha desde un punto de vista locomotriz. Este estudio además nos muestra una aplicación de neo-icnología como herramienta en estudios del área ecológica y biológica.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract For the hermit crabs, one of the most important resources is the shell of gastropod they carry along their life. This shell gives them different benefits like protection, refuge and prevents desiccation. The semi-terrestrial hermit crabs (Family Coenobitidae) perform a behavioral remodeling process from the inside of the gastropod shell, increasing its internal volume and making them lighter. In this study the advantages provided by remodeling a shell were evaluated with a locomotion approach. For this, terrestrial hermit crabs from Coenobita compressus species were collected in Playa Troncones, Guerrero. Locomotion experiments were performed where the crabs walked on wet sand occupying remodeled and non-remodeled shells with the purpose of measure their performance. Depth measurements and type of imprint were taken; also the walking velocity of each crab was measured. As a result we obtained that the hermit crabs occupying remodeled shells had a lower drag, shallower shell traces and they reached a greater speed. Therefore, the benefits of using a remodeled shell were demonstrated from a locomotive point of view. Besides, this study showed an application of the neo-ichnology as an implement in ecological and biological studies.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Conchas remodeladas]]></kwd>
<kwd lng="es"><![CDATA[conchas sin remodelar]]></kwd>
<kwd lng="es"><![CDATA[locomoción]]></kwd>
<kwd lng="es"><![CDATA[huellas]]></kwd>
<kwd lng="es"><![CDATA[profundidad]]></kwd>
<kwd lng="es"><![CDATA[velocidad]]></kwd>
<kwd lng="en"><![CDATA[Remodeled shells]]></kwd>
<kwd lng="en"><![CDATA[non-remodeled shells]]></kwd>
<kwd lng="en"><![CDATA[locomotion]]></kwd>
<kwd lng="en"><![CDATA[imprints]]></kwd>
<kwd lng="en"><![CDATA[depth]]></kwd>
<kwd lng="en"><![CDATA[walking velocity]]></kwd>
</kwd-group>
</article-meta>
</front><back>
<ref-list>
<ref id="B1">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Abrams]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Shell selection and utilization in a terrestrial hermit crab, Coenobita compressus (H. Milne Edwards)]]></article-title>
<source><![CDATA[Oecologia]]></source>
<year>1978</year>
<volume>34</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>239-53</page-range></nlm-citation>
</ref>
<ref id="B2">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Angel]]></surname>
<given-names><![CDATA[J.E.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Effects of shell fit on the biology of the hermit crab Pagurus longicarpus (Say)]]></article-title>
<source><![CDATA[Journal of Experimental Marine Biology and Ecology]]></source>
<year>2000</year>
<volume>243</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>169-84</page-range></nlm-citation>
</ref>
<ref id="B3">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Barnes]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Ecology of tropical hermit crabs at Quirimba Island, Mozambique: a novel and locally important food source]]></article-title>
<source><![CDATA[Marine Ecology Progress Series]]></source>
<year>1997</year>
<volume>161</volume>
<page-range>299-302</page-range></nlm-citation>
</ref>
<ref id="B4">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Brown]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Tracker (Java)]]></article-title>
<source><![CDATA[Open Source Physics]]></source>
<year>2008</year>
<publisher-loc><![CDATA[California, E.U.A. ]]></publisher-loc>
</nlm-citation>
</ref>
<ref id="B5">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Chapple]]></surname>
<given-names><![CDATA[W.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Kinematics of walking in the hermit crab, Pagurus pollicarus]]></article-title>
<source><![CDATA[Arthropod Structure &amp; Development]]></source>
<year>2012</year>
<volume>41</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>119-31</page-range></nlm-citation>
</ref>
<ref id="B6">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Dana]]></surname>
<given-names><![CDATA[J.D.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Conspectus crustaceorum quae in orbis terrarum circumnavigatione, Carolo Wilkes e classe reipublicae foederatae duce, lexit et descripsit]]></article-title>
<source><![CDATA[Proceedings of the Academy of Natural Sciences of Philadelphia]]></source>
<year>1851</year>
<volume>2</volume>
<page-range>267-72</page-range></nlm-citation>
</ref>
<ref id="B7">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Davis]]></surname>
<given-names><![CDATA[R.B.]]></given-names>
</name>
<name>
<surname><![CDATA[Minter]]></surname>
<given-names><![CDATA[N.J.]]></given-names>
</name>
<name>
<surname><![CDATA[Braddy]]></surname>
<given-names><![CDATA[S.J.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The neoichnology of terrestrial arthropods]]></article-title>
<source><![CDATA[Palaeogeography, Palaeoclimatology, Palaeoecology]]></source>
<year>2007</year>
<volume>255</volume>
<numero>3-4</numero>
<issue>3-4</issue>
<page-range>284-307</page-range></nlm-citation>
</ref>
<ref id="B8">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[de Wilde]]></surname>
<given-names><![CDATA[P.A.W.J.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[On the ecology of Coenobita clypeatus in Curaçao with reference to reproduction, water economy and osmoregulation in terrestrial hermit crabs]]></article-title>
<source><![CDATA[Studies on the Fauna of Curaçao and Other Caribbean Islands]]></source>
<year>1973</year>
<volume>44</volume>
<page-range>1-138</page-range></nlm-citation>
</ref>
<ref id="B9">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Fabricius]]></surname>
<given-names><![CDATA[F.C.]]></given-names>
</name>
</person-group>
<source><![CDATA[Mantissa insectorum: sistens eorum species nuper detectas, adiectis characteribus genericis, differentiis specificis, emendationibus, observationibus]]></source>
<year>1787</year>
<publisher-loc><![CDATA[Copenhague, Dinamarca ]]></publisher-loc>
<publisher-name><![CDATA[Christ. Gottl. Proft.]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B10">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Guillén]]></surname>
<given-names><![CDATA[F.C.]]></given-names>
</name>
<name>
<surname><![CDATA[Osorno]]></surname>
<given-names><![CDATA[J.L.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Elección de concha en Coenobita compressus (Decapoda: Coenobitidae)]]></article-title>
<source><![CDATA[Revista de Biología Tropical]]></source>
<year>1993</year>
<volume>41</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>65-72</page-range></nlm-citation>
</ref>
<ref id="B11">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Herreid]]></surname>
<given-names><![CDATA[C.F.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Integument permeability of crabs and adaptation to land]]></article-title>
<source><![CDATA[Comparative Biochemistry and Physiology]]></source>
<year>1969</year>
<volume>29</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>423-9</page-range></nlm-citation>
</ref>
<ref id="B12">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Herreid]]></surname>
<given-names><![CDATA[C.F.]]></given-names>
</name>
<name>
<surname><![CDATA[Full]]></surname>
<given-names><![CDATA[R.J.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Energetics of hermit crabs during locomotion: the cost of carrying a shell]]></article-title>
<source><![CDATA[Journal of Experimental Biology]]></source>
<year>1986</year>
<volume>120</volume>
<page-range>297-308</page-range></nlm-citation>
</ref>
<ref id="B13">
<nlm-citation citation-type="book">
<collab>Instituto Nacional de Estadística y Geografía (INEGI)</collab>
<source><![CDATA[Mapa digital de los Estados Unidos Mexicanos Marco Geoestadístico Municipal]]></source>
<year>2010</year>
<publisher-loc><![CDATA[Ciudad de México, México ]]></publisher-loc>
<publisher-name><![CDATA[Instituto Nacional de Estadística y Geografía]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B14">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Laidre]]></surname>
<given-names><![CDATA[M.E.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The social lives of hermits]]></article-title>
<source><![CDATA[Natural History]]></source>
<year>2014</year>
<volume>122</volume>
<page-range>24-9</page-range></nlm-citation>
</ref>
<ref id="B15">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Laidre]]></surname>
<given-names><![CDATA[M.E.]]></given-names>
</name>
<name>
<surname><![CDATA[Patten]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
<name>
<surname><![CDATA[Pruitt]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Costs of a more spacious home after remodeling by hermit crabs]]></article-title>
<source><![CDATA[Journal of The Royal Society Interface]]></source>
<year>2012</year>
<volume>9</volume>
<numero>77</numero>
<issue>77</issue>
<page-range>3574-7</page-range></nlm-citation>
</ref>
<ref id="B16">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Lamarck]]></surname>
<given-names><![CDATA[J.-B.P.A.M.]]></given-names>
</name>
</person-group>
<source><![CDATA[Histoire naturelle des animaux sans vertèbres : présentant les caractères généraux et particuliers de ces animaux, leur distribution, leurs classes, leurs familles, leurs genres, et la citation des principales espèces qui s&#8217;y rapportent: précédée d&#8217;une introduction offrant la détermination des caractères essentiels de l&#8217;animal, sa distinction du végétal et des autres corps naturels, enfin, l&#8217;exposition des principes fondamentaux de la zoologie]]></source>
<year>1815</year>
<publisher-loc><![CDATA[París, Francia ]]></publisher-loc>
<publisher-name><![CDATA[Verdière]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B17">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Leach]]></surname>
<given-names><![CDATA[W.E.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[A tabular view of the external characters of four classes of animals which Linné arranged under Insecta; with the distribution of the genera composing three of these classes into orders and descriptions of several new genera and species]]></article-title>
<source><![CDATA[Series Transactions of the Linnean Society of London]]></source>
<year>1815</year>
<volume>11</volume>
<page-range>306-400</page-range></nlm-citation>
</ref>
<ref id="B18">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Li]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<name>
<surname><![CDATA[Zhang]]></surname>
<given-names><![CDATA[T.]]></given-names>
</name>
<name>
<surname><![CDATA[Goldman]]></surname>
<given-names><![CDATA[D.I.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[A Terradynamics of Legged Locomotion on Granular Media]]></article-title>
<source><![CDATA[Science]]></source>
<year>2013</year>
<volume>339</volume>
<numero>6126</numero>
<issue>6126</issue>
<page-range>1408-12</page-range></nlm-citation>
</ref>
<ref id="B19">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Linnaeus]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
</person-group>
<source><![CDATA[Systema Naturae per regna tria naturae, secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis]]></source>
<year>1758</year>
<publisher-loc><![CDATA[Estocolmo, Suecia ]]></publisher-loc>
<publisher-name><![CDATA[Laurentii Salvii]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B20">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Mazouchova]]></surname>
<given-names><![CDATA[N.]]></given-names>
</name>
<name>
<surname><![CDATA[Gravish]]></surname>
<given-names><![CDATA[N.]]></given-names>
</name>
<name>
<surname><![CDATA[Savu]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Goldman]]></surname>
<given-names><![CDATA[D.I.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Utilization of granular solidification during terrestrial locomotion of hatchling sea turtles]]></article-title>
<source><![CDATA[Biology Letters]]></source>
<year>2010</year>
<volume>6</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>398-401</page-range></nlm-citation>
</ref>
<ref id="B21">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Milne-Edwards]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
</person-group>
<source><![CDATA[Histoire Naturelle des Crustacés, Comprenant L &#769;anatomie, La Physiologie et la Classification de ces Animaux]]></source>
<year>1834</year>
<publisher-loc><![CDATA[París, Francia ]]></publisher-loc>
<publisher-name><![CDATA[Librairie Encyclopédique de Roret]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B22">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Osorno]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Fernández]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
<name>
<surname><![CDATA[Rodríguez]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Are hermit crabs looking for light and large shells?: evidence from natural and field induced shell exchanges]]></article-title>
<source><![CDATA[Journal of Experimental Marine Biology and Ecology]]></source>
<year>1998</year>
<volume>222</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>163-73</page-range></nlm-citation>
</ref>
<ref id="B23">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Torres-Contreras]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
<name>
<surname><![CDATA[Vásquez]]></surname>
<given-names><![CDATA[R.A.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[A field experiment on the influence of load transportation and patch distance on the locomotion velocity of Dorymyrmex goetschi (Hymenoptera, Formicidae)]]></article-title>
<source><![CDATA[Insect Sociaux]]></source>
<year>2004</year>
<volume>51</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>265-70</page-range></nlm-citation>
</ref>
<ref id="B24">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Urfi]]></surname>
<given-names><![CDATA[A.J.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Animal locomotion in different mediums. The Adaptations of Wetland Organisms]]></article-title>
<source><![CDATA[Resonance]]></source>
<year>2016</year>
<volume>21</volume>
<numero>6</numero>
<issue>6</issue>
<page-range>545-56</page-range></nlm-citation>
</ref>
<ref id="B25">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Vermeij]]></surname>
<given-names><![CDATA[G.J.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Evolution: Remodeling Hermit Shellters]]></article-title>
<source><![CDATA[Current Biology]]></source>
<year>2012</year>
<volume>22</volume>
<numero>20</numero>
<issue>20</issue>
<page-range>R882-4</page-range></nlm-citation>
</ref>
<ref id="B26">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Walker]]></surname>
<given-names><![CDATA[S.E.]]></given-names>
</name>
<name>
<surname><![CDATA[Holland]]></surname>
<given-names><![CDATA[S.M.]]></given-names>
</name>
<name>
<surname><![CDATA[Gardiner]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Coenobichnus currani (new ichnogenus and ichnospecies): fossil trackway of a land hermit crab, Early Holocene, San Salvador, Bahamas]]></article-title>
<source><![CDATA[Journal of Paleontology]]></source>
<year>2003</year>
<volume>77</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>576-82</page-range></nlm-citation>
</ref>
</ref-list>
</back>
</article>
