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The Amazon molly has been reproducing asexually for about 100,000-200,000 years. [29] This is about 500,000 generations of Amazon molly. Asexual lineages typically go extinct after 10,000-100,000 generations. [23] There is research being done to determine how the Amazon molly has not gone extinct or developed a Muller's ratchet of mutations
Horses can breed with Przewalski's horse to produce fertile hybrids. Mule, a cross of female horse and a male donkey. Hinny, a cross between a female donkey and a male horse. Mules and hinnies are examples of reciprocal hybrids. Kunga, a cross between a donkey and a Syrian wild ass. Zebroids. Zeedonk or zonkey, a zebra/donkey cross. Zorse, a ...
In competitions between sperm from an unrelated male and from a full sibling male, a significant bias in paternity towards the unrelated male was observed. [4] It is a theory that females avoid inbreeding more than males due to the fact that when they mate with a sibling, they obtain 50% less sperm in their ovarian cavities in comparison to ...
Fear of fish or ichthyophobia ranges from cultural phenomena such as fear of eating fish, fear of touching raw fish, or fear of dead fish, up to irrational fear (specific phobia). Selachophobia, or galeophobia , is the specific fear of sharks .
Pages in category "Fish of the Amazon basin" The following 200 pages are in this category, out of approximately 368 total. This list may not reflect recent changes .
The parrots will nest in a wide variety of trees, although dead Coyols (palm trees) are one preferred species. During the breeding season, pairs are monogamous, and pairs defend small breeding territories around the nest by duetting with their partners. [6] Breeding success is low (89%), and the majority of nests fail due to poaching [5]
A spawning bed is an underwater solid surface on which fish spawn to reproduce themselves. In fishery management , a spawning bed is an artificial bed constructed by wildlife professionals in order to improve the ability of desired game fish to reproduce.
In evolutionary psychology and behavioral ecology, human mating strategies are a set of behaviors used by individuals to select, attract, and retain mates.Mating strategies overlap with reproductive strategies, which encompass a broader set of behaviors involving the timing of reproduction and the trade-off between quantity and quality of offspring.