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首页> 外文期刊>The Herpetological journal >Feeding ecology of the neotropical worm snake Atractus reticulatus in southern Brazil
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Feeding ecology of the neotropical worm snake Atractus reticulatus in southern Brazil

机译：巴西南部新热带蠕虫蛇Atractus reticulatus的饲养生态

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摘要

Analyses of the gut content of 126 specimens of Atractus reticulatus from the eastern Central Depression of Rio Grande do Sul State, southern Brazil, indicate that this species feeds exclusively on annelids, and primarily on oligochaetes of the family Megascolecidae. Thirty-two stomachs presented 52 items, of which 84.6% were oligochaetes (75.0% family Megascolecidae, 7.7% family Glossoscolecidae, and 1.9% unidentified families), 7.7% were Hirudinea and 7.7% unidentified annelids. Chaetae of oligochaetes were also found in the intestines of 40 additional specimens. Among 20 individuals of A. reticulatus of different size classes captured with some content in the gut, 85.0% were captured at night or in the early hours of morning, indicating foraging activity in these periods. About 83% of the ingested prey were free-living, epigeic annelids, which indicates that A. reticulatus forages mainly on the ground. Prior to swallowing, the annelids were usually oriented and ingested from the anterior portion of the body, a method probably related to autotomy of the prey, which may occur if they are captured from the posterior.
机译：对巴西南部里奥格兰德州南部中部东部凹陷的126个白术标本的肠道成分进行的分析表明，该物种仅以肘类动物为食，并且主要以Megascolecidae科的寡食动物为食。三十二个胃代表了52种食物，其中寡头鱼类（75.0％的s科，7.7％的G科和1.9％的不明科），7.7％的水rud科和7.7％的小nel科。在另外40个标本的肠道中也发现了寡头类的Chaetae。在20个不同大小等级的网状土壤杆菌中捕获到一些内含物，其中85.0％是在夜间或清晨捕获的，这表明这些时期的觅食活动。摄入的猎物中约有83％是自由活动的雌性无性类动物，这表明网纹拟南芥主要在地面觅食。吞咽前，通常从身体的前部定向并摄取关节突，这可能与猎物的切开术有关，如果从后部捕获，可能会发生这种情况。

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