Four Agkistrodon conanti interact including engaging in food-induced male-male combat.(103.8MB, 00:03:29)撮影場所：Volusia County, Florida, USA | ||
 | 種類 Agkistrodon conanti キーワード | |
Terence Farrell 2024/03/16登録 |
Four Agkistrodon conanti interact including engaging in food-induced male-male combat.(103.8MB, 00:03:29)撮影場所：Volusia County, Florida, USA | ||
| 種類 Agkistrodon conanti キーワード | |
Terence Farrell 2024/03/16登録 |
動物界 >脊索動物門 >爬虫綱 >有鱗目 >クサリヘビ科 >Agkistrodon属 >Four Florida cottonmouths (Agkistrodon conanti) interact including engaging in food-induced male-male combat.
Time Key event
0:00 A yearling cottonmouth (Snake 1) approaches an envenomated pig frog (Rana grylio).
0:06 Close up of Snake1 and the frog
0:09 Snake2 approaches frog after Snake1 retreated to cover
0:20 Snake3 approaches frog and Snake2
0:49 Snake2 and Snake 3 rise and challenge each other
0:56 Snake3 tongue flicks frog
1:08 Snake2 tongue flicks frog
1:30 Snake2 and Snake3 engage in vigorous combat
1:45 Snake3 pauses combat and attempts to ingest frog
1:52 Snake2 reinitiates combat with Snake3
2:09 Snake3 again attempts to ingest the frog
2:16 Snake2 and Snake3 engage in vigorous combat
2:40 Snake4 approaches Snake2 and Snake3
2:51 Snake3 starts ingesting frog
3:10 Snake3 flees with frog and is followed by Snake2 and Snake4
3:17 Snake1 returns and searches area were frog was initially located
Below is the abstract from the article containing this video:
Male-male combat occurs in many snake species and is often thought to result from competition for mates. We argue a more thorough assessment of the contexts in which combat occurs is warranted for snakes. We made field video observations of Agkistrodon conanti in central Florida, A. piscivorus in eastern North Carolina, and A. contortrix in eastern Kentucky. These observations were made in frequently used foraging sites; near drying ephemeral ponds in Florida and North Carolina and in a forested area with abundant emerging cicadas in Kentucky. In all three populations, males engaged in ritualized combat. In four instances, a variety of lines of evidence including season, local food resource abundance, local female abundance, and postcombat behaviors all indicated that access to food resources, rather than mating opportunities, was the catalyst for agonistic behavior. Behaviorally, food-induced combat appears nearly identical to mating-induced combat. Simplistic assumptions about the environmental contexts that induce combat may lead researchers to make inaccurate conclusions concerning the duration of the breeding season and the frequency of intraspecific competition for food in snake species. We outline a rigorous set of criteria that should be used to determine the context of male–male combat bouts. Videos showing the examples of combat discussed are available at http://www.momo-p.com/showdetail-e.php?movieid=momo231230ac01a, http:// www.momo-p.com/showdetail-e.php?movieid=momo231230ac02a, http://www.momo-p.com/showdetail-e.php?movieid= momo231228ap01a, and http://www.momo-p.com/showdetail-e.php?movieid=momo231230ap01a.
Terence M. Farrell, Henderson C. Gull, Frederick S. Boyce, and Stephen C. Richter (2024). Ritualized male–male combat resulting from intraspecific food competition in three Agkistrodon species. J. Ethol. doi.org/10.1007/s10164-024-00806-8
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