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Author: Gavin Droessler: Software used: Microsoft® Word 2016: Date and time of digitizing: 17:13, 14 November 2016: File change date and time: 17:13, 14 November 2016
English: Butterfly life cycle diagram, in English. The butterfly is the Southern Monarch (Danaus erippus). Date: 1 August 2020: Source:
Extremity of a male nematode showing the spicule, used for copulation, bar=100 μm [48] Most nematode species are dioecious, with separate male and female individuals, though some, such as Caenorhabditis elegans, are androdioecious, consisting of hermaphrodites and rare males. Both sexes possess one or two tubular gonads. In males, the sperm ...
Life cycle of the monarch butterfly. Butterflies in their adult stage can live from a week to nearly a year depending on the species. Many species have long larval life stages while others can remain dormant in their pupal or egg stages and thereby survive winters. [36] The Melissa Arctic (Oeneis melissa) overwinters twice as a caterpillar. [37]
H. galeatus is described as being a relatively large nematode (1.1–15.mm) with a large heavily defined cephalic framework, including a large stylet with tulip shaped knobs. The nematode has a cuticle with 4–6 layers. The lips are offset with 4–5 annules, which are divided into tile-like structures.
When the nematode enters an insect larvae, Photorhabdus species are released by the nematodes and will produce a range of toxins, killing the host within 48 hours. Photorhabdus species feed on the cadaver of the insect and the process converts the cadaver into a nutrient source for the nematode. Mature nematodes leave the depleted body of the ...
The nematode moves out of its developmentally arrested third, nonfeeding stage, triggered by either bacterial or insect food signals. The nematodes feed on the bacteria and moult to the fourth stage, reaching adulthood within a few days. with separate male and female individuals. [6] Nematode development continues for two to three generations.
Under drought conditions the nematode can persist up to two years outside a host by entering an anhydrobiotic state. [4] The life cycle is 17 to 29 days long. [6] The juvenile molts once while still inside the egg. [11] The eggs hatch in 8 to 10 days. The juvenile molts three times to reach the immature stage. [11]