| 词汇 | spermatophore |
| 释义 | BETA Examples of spermatophorespermatophore isn’t in the Cambridge Dictionary yet. You can help! While manipulating the spermatophore, the male also secretes saliva, which is believed to serve as a lubricant. The tubular portion of the spermatophore, after fertilisation, breaks off from the reservoir remaining with the male and blocks up the canal of the spermatheca. In many insects, the mating plug is a coagulum of the seminal fluid rather than the spermatophore. Male ticks have no specialized copulatory organ, so their mouthparts push the tip of the spermatophore into the female's gonopore. The spermatophore is then formed externally in less than a minute. Following successful identification of the female as a conspecific mate, the spermatophore is formed and copulation ensues. Furthermore, but for reasons not known, it was observed that when only sterile matings were considered, the lack of spermatophore transfer was more frequent in young females. After spermatophore transfer is complete, the male will attempt to remain in contact with the female to prevent her from removing the spermatophore. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. There are several theories regarding the adaptive value of using a spermatophore. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. During mating, each individual places a spermatophore onto the neck of its partner after rupture of the seminal vesicle. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The speckled wood males's spermatophore size increases as body mass of the male increases. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Males produce from 81 to 1,555 spermatophores, varying in length between 1.4and3.8cm in. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The left 5th appendage of males is modified to form a hectocotylus arm which is used to transfer spermatophores into the female reproductive organ. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Male spermatophores are relatively small at 7 mm in length. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. A first step probably was the attachment of a spermatophore to the basal sternites of the male abdomen instead of a deposition on substrate. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Because the cost of mistakes is low (low investment in spermatophores) and potential reward (location of receptive female) is high, indiscriminate behavior can become advantageous. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Another line of research is artificial insemination, either in vitro or by inserting spermatophores into the cloacas of females. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The spermatophores usually remain embedded near the mouth of the female. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. That in turn is used to transfer the spermatophores to the female. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. At mating, the male engages in courtship behavior and produces a spermatophore. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. |
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