<?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>1659-4266</journal-id>
<journal-title><![CDATA[Cuadernos de Investigación UNED]]></journal-title>
<abbrev-journal-title><![CDATA[Cuadernos de Investigación UNED]]></abbrev-journal-title>
<issn>1659-4266</issn>
<publisher>
<publisher-name><![CDATA[Universidad Estatal a Distancia de Costa Rica]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1659-42662017000100151</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Cambios en la estructura poblacional del caimán, Caiman crocodilus (Crocodylia: Alligatoridae) y su posible relación con el cambio climático, en Caño Negro, Costa Rica]]></article-title>
<article-title xml:lang="en"><![CDATA[Changes in the population of structure of the spectacled caiman, Caiman crocodilus (Crocodilia: Caimanidae) and its possible relation with climate change, in Caño Negro, Costa Rica]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Aranda-Coello]]></surname>
<given-names><![CDATA[J. Manuel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Nacional Instituto Internacional en Conservación y Manejo de Vida Silvestre ]]></institution>
<addr-line><![CDATA[Heredia ]]></addr-line>
<country>Costa Rica</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2017</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2017</year>
</pub-date>
<volume>9</volume>
<numero>1</numero>
<fpage>151</fpage>
<lpage>155</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_arttext&amp;pid=S1659-42662017000100151&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_abstract&amp;pid=S1659-42662017000100151&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_pdf&amp;pid=S1659-42662017000100151&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen El caimán, Caiman crocodilus, es importante ecológica y económicamente en algunas áreas de Latinoamérica. En Costa Rica no es abundante y existe poca información de su población. Lo estudié en el Refugio Nacional de Vida Silvestre Caño Negro, Costa Rica por medio de la recopilación y comparación de estudios previos y la incorporación de información reciente. Realicé recorridos nocturnos en bote con una lámpara de 2 millones de lúmenes (espectro de luz de 400m) y capturé manualmente individuos por debajo de los 60cm de longitud. Para individuos más grandes ó de difícil acceso, usé lazos tipo Thompson y pértigas de 2m de largo con una soga insertada, y capturé 180 caimanes. La mayoría eran subadultos y la proporción hembras/machos fue de 1:12, inusualmente alto para la especies y probablemente a causa de las condiciones ambientales. Los efectos del calentamiento global podrían alterar la proporción de sexos y la estructura reproductiva del caimán.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract The spectacled caiman, Caiman crocodilus, is ecologically and economicaly important in some areas of Latin America. In Costa Rica it is not abundant and there is a need for population data. I studied it in Caño Negro National Wildlife Refuge, Costa Rica, through the collection and comparison of previous studies and the incorporation of recent information. I made night boat trips with a 2 million lumen lamp (400m spectrum) and manually captured individuals under 60cm long. For larger sizes or animals located in areas of difficult access, I used Thompson ties and 2m long poles with an inserted rope, and captured 180 caiman. Most were sub-adults and there were 1:12 females per male, unusually high for the species and possibly caused by environmental conditions. The efects of global warming could disrupt the sex ratio and reproductive structure of spectacled caimans.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[caimán]]></kwd>
<kwd lng="es"><![CDATA[conservación]]></kwd>
<kwd lng="es"><![CDATA[crocodilianos]]></kwd>
<kwd lng="es"><![CDATA[manejo de vida silvestre]]></kwd>
<kwd lng="es"><![CDATA[proporción de sexos]]></kwd>
<kwd lng="en"><![CDATA[Caymans]]></kwd>
<kwd lng="en"><![CDATA[conservation]]></kwd>
<kwd lng="en"><![CDATA[crocodylians]]></kwd>
<kwd lng="en"><![CDATA[wildlife management]]></kwd>
<kwd lng="en"><![CDATA[sex ratio]]></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[Allsteadt]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Vaughan]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Ecological studies of the Central American caiman (Caiman crocodilus fuscus) in CañoNegroNational Wildlife Refuge, Costa Rica]]></article-title>
<source><![CDATA[Herpetological Society]]></source>
<year>1988</year>
<volume>23</volume>
<numero>8</numero>
<issue>8</issue>
<page-range>123-6</page-range></nlm-citation>
</ref>
<ref id="B2">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Allsteadt]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Vaughan]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Population status of Caiman crocodilus (Crocodylia: Alligatoridae) in Caño Negro, Costa Rica]]></article-title>
<source><![CDATA[Brenesia]]></source>
<year>1992</year>
<volume>38</volume>
<page-range>57-64</page-range></nlm-citation>
</ref>
<ref id="B3">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Allsteadt]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Nesting ecology of Caiman crocodilus in Caño Negro, Costa Rica]]></article-title>
<source><![CDATA[Journal of Herpetology]]></source>
<year>1994</year>
<volume>28</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>12-9</page-range></nlm-citation>
</ref>
<ref id="B4">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Brazaitis]]></surname>
<given-names><![CDATA[P. J]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The determination of sex in living crocodilians]]></article-title>
<source><![CDATA[Herpetological Journal]]></source>
<year>1968</year>
<volume>4</volume>
<page-range>54-8</page-range></nlm-citation>
</ref>
<ref id="B5">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Marmontel]]></surname>
<given-names><![CDATA[R. M.]]></given-names>
</name>
<name>
<surname><![CDATA[Queiroz]]></surname>
<given-names><![CDATA[H. L]]></given-names>
</name>
</person-group>
<collab>Botero-Arias</collab>
<article-title xml:lang=""><![CDATA[Projeto de manejo experimental de jacarés no estado do Amazonas: Abate de jacarés no Setor Jarauá - Reserva de Desenvolvimento Sustentável Mamirauá, Dezembro de 2008]]></article-title>
<source><![CDATA[Uakari]]></source>
<year>2009</year>
<volume>5</volume>
<page-range>49-58</page-range></nlm-citation>
</ref>
<ref id="B6">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Bolton]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
</person-group>
<source><![CDATA[The management of crocodiles in captivity]]></source>
<year>1989</year>
<page-range>62p</page-range><publisher-loc><![CDATA[Roma ]]></publisher-loc>
<publisher-name><![CDATA[FAO]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B7">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Cabrera]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Protti]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Urriola]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Cubero]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Distribución y abundancia de Caiman crocodilus en el Refugio Nacional de Vida Silvestre Caño Negro, Costa Rica]]></article-title>
<source><![CDATA[Revista de Biología Tropical]]></source>
<year>2003</year>
<volume>51</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>571-8</page-range></nlm-citation>
</ref>
<ref id="B8">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Chabreck]]></surname>
<given-names><![CDATA[R. H.]]></given-names>
</name>
<name>
<surname><![CDATA[Joanen]]></surname>
<given-names><![CDATA[T]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Growth rates of American alligators in Louisiana]]></article-title>
<source><![CDATA[Herpetologica]]></source>
<year>1979</year>
<volume>35</volume>
<page-range>51-7</page-range></nlm-citation>
</ref>
<ref id="B9">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Escobedo]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Estructura poblacional y proporción de sexos en Caiman crocodilus en Caño Negro, Costa Rica]]></article-title>
<source><![CDATA[Iheringia, Sér. Zool]]></source>
<year>2008</year>
<volume>98</volume>
<numero>4</numero>
<issue>4</issue>
<page-range>489-92</page-range><publisher-loc><![CDATA[Porto Alegre ]]></publisher-loc>
</nlm-citation>
</ref>
<ref id="B10">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Escobedo]]></surname>
<given-names><![CDATA[A. H.]]></given-names>
</name>
<name>
<surname><![CDATA[González-Maya]]></surname>
<given-names><![CDATA[J. F]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Estructura poblacional y proporción de sexos del Caimán (Caiman crocodilus) en el río Sierpe, Costa Rica]]></article-title>
<source><![CDATA[Acta Zoológica Mexicana]]></source>
<year>2006</year>
<volume>22</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>151-3</page-range></nlm-citation>
</ref>
<ref id="B11">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Escobedo]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Retana]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Méndez]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<name>
<surname><![CDATA[Gonzále]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[&#8220;Efecto potencial del cambio climático en la proporción de sexos del caimán en Costa Rica&#8221;]]></article-title>
<source><![CDATA[Ambientales, Costa Rica]]></source>
<year>2012</year>
<volume>44</volume>
<page-range>49-60</page-range></nlm-citation>
</ref>
<ref id="B12">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Ewert]]></surname>
<given-names><![CDATA[M. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Lang]]></surname>
<given-names><![CDATA[J. W.]]></given-names>
</name>
<name>
<surname><![CDATA[Nelson]]></surname>
<given-names><![CDATA[C. E]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Geographic variation in the pattern of temperature-dependent sex determination in the American snapping turtle (Chelydra serpentina)]]></article-title>
<source><![CDATA[Journal of Zoology London]]></source>
<year>2005</year>
<volume>265</volume>
<page-range>81-95</page-range></nlm-citation>
</ref>
<ref id="B13">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Girodont]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Delmas]]></surname>
<given-names><![CDATA[V.]]></given-names>
</name>
<name>
<surname><![CDATA[Rivalan]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
<name>
<surname><![CDATA[Courchamp]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
<name>
<surname><![CDATA[PrevotJulliard]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Godfrey]]></surname>
<given-names><![CDATA[M. H]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Implications of temperature-dependent sex determination for population dynamics]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[Valenzuela]]></surname>
<given-names><![CDATA[N]]></given-names>
</name>
<name>
<surname><![CDATA[Lance]]></surname>
<given-names><![CDATA[V]]></given-names>
</name>
</person-group>
<source><![CDATA[Temperature-dependent sex determination in vertebrates]]></source>
<year>2004</year>
<publisher-loc><![CDATA[Washington, DC ]]></publisher-loc>
<publisher-name><![CDATA[Smithsonian Institute]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B14">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Holdridge]]></surname>
<given-names><![CDATA[L. R]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Determination of world plant forma- tions from simple climatic data]]></article-title>
<source><![CDATA[Science]]></source>
<year>1947</year>
<volume>105</volume>
<page-range>367-8</page-range></nlm-citation>
</ref>
<ref id="B15">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Janzen]]></surname>
<given-names><![CDATA[F. J]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Climate change and temperature-dependent sex determination in reptiles]]></article-title>
<source><![CDATA[Proc. Nat. Acad. Sci.]]></source>
<year>1994</year>
<volume>91</volume>
<page-range>7487-90</page-range></nlm-citation>
</ref>
<ref id="B16">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Junier]]></surname>
<given-names><![CDATA[E. F]]></given-names>
</name>
</person-group>
<source><![CDATA[Análisis de la población de Caiman crocodilus en el Refugio Nacional de Vida Silvestre Caño Negro, Costa Rica]]></source>
<year>2000</year>
<page-range>46</page-range><publisher-loc><![CDATA[Heredia, CR ]]></publisher-loc>
<publisher-name><![CDATA[UNA]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B17">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Magnusson]]></surname>
<given-names><![CDATA[W. E.]]></given-names>
</name>
<name>
<surname><![CDATA[Sanaiotii]]></surname>
<given-names><![CDATA[T. M]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Growth of Caiman crocodilus crocodilus in Central Amazonia, Brazil]]></article-title>
<source><![CDATA[Copeia]]></source>
<year>1995</year>
<volume>1995</volume>
<page-range>498-501</page-range></nlm-citation>
</ref>
<ref id="B18">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Medem]]></surname>
<given-names><![CDATA[F]]></given-names>
</name>
</person-group>
<source><![CDATA[Los Crocodylia de Sur América]]></source>
<year>1981</year>
<volume>I</volume>
<publisher-loc><![CDATA[Bogotá ]]></publisher-loc>
<publisher-name><![CDATA[Colciencias]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B19">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Miller]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
<name>
<surname><![CDATA[Summers]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Silber]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Environmental versus genetic sex determination: a possible factor in dinosaur extinction?]]></article-title>
<source><![CDATA[Special Contribution Fertility and Sterility]]></source>
<year>2004</year>
<volume>4</volume>
<page-range>954-64</page-range></nlm-citation>
</ref>
<ref id="B20">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Mountain]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Integrating population monitoring and resource use of caiman with human impact at Lago Preto, Perú]]></article-title>
<source><![CDATA[WCS-DICE Report Pask]]></source>
<year>2005</year>
</nlm-citation>
</ref>
<ref id="B21">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Ojasti]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Dallmeier]]></surname>
<given-names><![CDATA[F]]></given-names>
</name>
</person-group>
<source><![CDATA[Manejo de fauna silvestre neotropical]]></source>
<year>2000</year>
<publisher-loc><![CDATA[Washington, D.C. ]]></publisher-loc>
<publisher-name><![CDATA[SI/MAB Smithsonian Institution, MAB Biodiversity Program]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B22">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Ouboter]]></surname>
<given-names><![CDATA[P. E.]]></given-names>
</name>
<name>
<surname><![CDATA[Nanhoe]]></surname>
<given-names><![CDATA[L. M]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Habitat selection and migration of Caiman crocodilus crocodilus in a Swamp and Swamp-Forest habitat in Northern Suriname]]></article-title>
<source><![CDATA[Journal of Herpetology]]></source>
<year>1998</year>
<volume>22</volume>
<page-range>283-94</page-range></nlm-citation>
</ref>
<ref id="B23">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Piña]]></surname>
<given-names><![CDATA[C. I.]]></given-names>
</name>
<name>
<surname><![CDATA[Larriera]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Cabrera]]></surname>
<given-names><![CDATA[M. R]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Effect of temperature on incubation period, sex ratio, hatching success and survivorship in Caiman latirostris (Crocodylia, Alligatoridae)]]></article-title>
<source><![CDATA[Journal of Herpetology]]></source>
<year>2003</year>
<volume>37</volume>
<page-range>199-202</page-range></nlm-citation>
</ref>
<ref id="B24">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Rodríguez]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Caiman crocodilus fuscus]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[Castaño- Mora]]></surname>
<given-names><![CDATA[GV]]></given-names>
</name>
</person-group>
<source><![CDATA[Libro rojo de reptiles de Colombia]]></source>
<year>2002</year>
<page-range>10-5</page-range><publisher-loc><![CDATA[Bogotá ]]></publisher-loc>
<publisher-name><![CDATA[Instituto de Ciencias Naturales, Universidad Nacional de Colombia, Ministerio del Medio Ambiente, Conservación Internacional-Colombia]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B25">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Rodda]]></surname>
<given-names><![CDATA[G. H]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Movements of juvenile American crocodiles in Gatun lake, Panama]]></article-title>
<source><![CDATA[Journal of Herpetology]]></source>
<year>1984</year>
<volume>40</volume>
<numero>4</numero>
<issue>4</issue>
<page-range>444-51</page-range></nlm-citation>
</ref>
<ref id="B26">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Ross]]></surname>
<given-names><![CDATA[J. P]]></given-names>
</name>
</person-group>
<source><![CDATA[Crocodiles Status Survey and Conservation Action Plan]]></source>
<year>1998</year>
<edition>2nd</edition>
<publisher-loc><![CDATA[Gland, Switzerland and Cambridge ]]></publisher-loc>
<publisher-name><![CDATA[IUCN]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B27">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Saénz]]></surname>
<given-names><![CDATA[I]]></given-names>
</name>
</person-group>
<source><![CDATA[Variación estacional de la comunidad íctica según el nivel de agua, en el sector Playuelas, Refugio Nacional de Vida Silvestre Caño Negro, Alajuela, Costa Rica]]></source>
<year>2001</year>
<page-range>53</page-range><publisher-loc><![CDATA[Heredia, CR ]]></publisher-loc>
<publisher-name><![CDATA[UNA]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B28">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Sánchez]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
</person-group>
<source><![CDATA[Estado de la población de cocodrilos (Crocodylus acutus) en el río Tempisque, Guanacaste, Costa Rica]]></source>
<year>2001</year>
<publisher-loc><![CDATA[Heredia, Costa Rica ]]></publisher-loc>
<publisher-name><![CDATA[Área de Conservación Tempisque-Instituto Nacional de Biodiversidad (INBio)]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B29">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Sánchez]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Bolaños]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Piedra]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Población de Crocodylus acutus (Crocodylia: Crocodylidae) en dos ríos de Costa Rica]]></article-title>
<source><![CDATA[Revista de Biología Tropical]]></source>
<year>1996</year>
<page-range>835-40</page-range></nlm-citation>
</ref>
<ref id="B30">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Thorbjarnarson]]></surname>
<given-names><![CDATA[J. B]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Are crocodilian sex ratios female biased? The data are equivocal]]></article-title>
<source><![CDATA[Copeia]]></source>
<year>1997</year>
<volume>1997</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>451-5</page-range></nlm-citation>
</ref>
<ref id="B31">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Velasco]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Ayarzagüena]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Situación actual de las poblaciones de baba (Caiman crocodilus) sometidas a aprovechamiento comercial en los Llanos Venezolanos]]></article-title>
<source><![CDATA[Publicaciones de la Asociación Amigos de Doñana]]></source>
<year>1995</year>
<numero>5</numero>
<issue>5</issue>
</nlm-citation>
</ref>
</ref-list>
</back>
</article>
