Patrones alimentarios de Uta stansburiana stejnegeri (Sauria: iguanidae) en dunas del Bolsón de Mapimí en Chihuahua, México
We studied the seasonal feeding pattern of the lizard Uta stansburiana stejnegeri in sand dunes of the Bolsón de Mapimí in Chihuahua, México. We determined the main food items at the Order level, quantified the fluctuations of diversity of arthropods in the diet related to rainfall fluctuations, and calculated the intersexual niche overlap. Stomaches were examined and the importance value of each prey based on its relative abundance, relative volume, and constancy was determined. Formicidae was the most important order, followed by Isoptera (adults). Other groups were less abundant, but were important because of the individual size of prey (Coleoptera adults, Lepidoptera larvae and Hemiptera adults). Prey diversity was relatively low during Spring and higher in Summer and Autumn. The intersexual niche overlap was high all year round. However, we found some intersexual variation in Isoptera prey length.
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Asociación Argentina de Ecología
1995
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rev-ecoaus-article-16812021-02-03T00:38:31Z Patrones alimentarios de Uta stansburiana stejnegeri (Sauria: iguanidae) en dunas del Bolsón de Mapimí en Chihuahua, México Patrones alimentarios de Uta stansburiana stejnegeri (Sauria: iguanidae) en dunas del Bolsón de Mapimí en Chihuahua, México Palacios-Orona, Luis E. Gadsden-Esparza, Héctor We studied the seasonal feeding pattern of the lizard Uta stansburiana stejnegeri in sand dunes of the Bolsón de Mapimí in Chihuahua, México. We determined the main food items at the Order level, quantified the fluctuations of diversity of arthropods in the diet related to rainfall fluctuations, and calculated the intersexual niche overlap. Stomaches were examined and the importance value of each prey based on its relative abundance, relative volume, and constancy was determined. Formicidae was the most important order, followed by Isoptera (adults). Other groups were less abundant, but were important because of the individual size of prey (Coleoptera adults, Lepidoptera larvae and Hemiptera adults). Prey diversity was relatively low during Spring and higher in Summer and Autumn. The intersexual niche overlap was high all year round. However, we found some intersexual variation in Isoptera prey length. El objetivo de este trabajo es conocer los patrones alimentarios estacionales de la lagartija Uta stansburiana stejnegeri en dunas del Bolsón de Mapimí, en el Estado de Chihuahua, México. Se determinaron los principales taxa del nivel de Orden, se cuantificaron las fluctuaciones estacionales de la diversidad de artrópodos en la dieta y su relación con las fluctuaciones anuales del aporte pluvial. También se determinó la similitud de la dieta entre ambos sexos. Los estómagos fueron examinados y se determinó un valor de importancia para cada presa de acuerdo a su abundancia relativa, volumen relativo y constancia. Formicidae fue la presa de mayor importancia e Isoptera fue el segundo grupo. También se encontraron presas que no se consumieron en abundancia pero que son voluminosas, tales como Coleoptera (adultos), Lepidoptera (larvas) y Hemiptera (adultos). La diversidad alimentaria fue relativamente baja durante primavera y algo mayor en verano y otoño. El índice de similitud alimentaria reflejó una alta semejanza entre la dieta de hembras y machos. No obstante, se detectó una cierta diferenciación intersexual en la longitud de los isópteros consumidos. Los resultados sugieren que este organismo es básicamente generalista con una adaptación oportunista debido a la variación en el consumo de presas en diferentes estaciones. Asociación Argentina de Ecología 1995-06-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Artículos application/pdf https://ojs.ecologiaaustral.com.ar/index.php/Ecologia_Austral/article/view/1681 Ecología Austral; Vol. 5 No. 1 (1995); 037-045 Ecología Austral; Vol. 5 Núm. 1 (1995); 037-045 0327-5477 1667-7838 spa https://ojs.ecologiaaustral.com.ar/index.php/Ecologia_Austral/article/view/1681/1013 Derechos de autor 2021 Ecología Austral |
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Asociación Argentina de Ecología |
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| author |
Palacios-Orona, Luis E. Gadsden-Esparza, Héctor |
| spellingShingle |
Palacios-Orona, Luis E. Gadsden-Esparza, Héctor Patrones alimentarios de Uta stansburiana stejnegeri (Sauria: iguanidae) en dunas del Bolsón de Mapimí en Chihuahua, México |
| author_facet |
Palacios-Orona, Luis E. Gadsden-Esparza, Héctor |
| author_sort |
Palacios-Orona, Luis E. |
| title |
Patrones alimentarios de Uta stansburiana stejnegeri (Sauria: iguanidae) en dunas del Bolsón de Mapimí en Chihuahua, México |
| title_short |
Patrones alimentarios de Uta stansburiana stejnegeri (Sauria: iguanidae) en dunas del Bolsón de Mapimí en Chihuahua, México |
| title_full |
Patrones alimentarios de Uta stansburiana stejnegeri (Sauria: iguanidae) en dunas del Bolsón de Mapimí en Chihuahua, México |
| title_fullStr |
Patrones alimentarios de Uta stansburiana stejnegeri (Sauria: iguanidae) en dunas del Bolsón de Mapimí en Chihuahua, México |
| title_full_unstemmed |
Patrones alimentarios de Uta stansburiana stejnegeri (Sauria: iguanidae) en dunas del Bolsón de Mapimí en Chihuahua, México |
| title_sort |
patrones alimentarios de uta stansburiana stejnegeri (sauria: iguanidae) en dunas del bolsón de mapimí en chihuahua, méxico |
| description |
We studied the seasonal feeding pattern of the lizard Uta stansburiana stejnegeri in sand dunes of the Bolsón de Mapimí in Chihuahua, México. We determined the main food items at the Order level, quantified the fluctuations of diversity of arthropods in the diet related to rainfall fluctuations, and calculated the intersexual niche overlap. Stomaches were examined and the importance value of each prey based on its relative abundance, relative volume, and constancy was determined. Formicidae was the most important order, followed by Isoptera (adults). Other groups were less abundant, but were important because of the individual size of prey (Coleoptera adults, Lepidoptera larvae and Hemiptera adults). Prey diversity was relatively low during Spring and higher in Summer and Autumn. The intersexual niche overlap was high all year round. However, we found some intersexual variation in Isoptera prey length. |
| publisher |
Asociación Argentina de Ecología |
| publishDate |
1995 |
| url |
https://ojs.ecologiaaustral.com.ar/index.php/Ecologia_Austral/article/view/1681 |
| work_keys_str_mv |
AT palaciosoronaluise patronesalimentariosdeutastansburianastejnegerisauriaiguanidaeendunasdelbolsondemapimienchihuahuamexico AT gadsdenesparzahector patronesalimentariosdeutastansburianastejnegerisauriaiguanidaeendunasdelbolsondemapimienchihuahuamexico |
| _version_ |
1755912519656931328 |