Zobrazeno 1 - 10
of 46
pro vyhledávání: '"John A. Fornshell"'
Autor:
John A. Fornshell
Publikováno v:
Arthropods, Vol 13, Iss 1, Pp 7-14 (2024)
The mechanoreceptors of land-dwelling juveniles of the family Coenobitidae were studied using scanning electron microscopy to determine how their morphology varied from the mechanoreceptors of the marine dwelling zoea stage. Archived specimens of Bir
Externí odkaz:
https://doaj.org/article/2ab32d31924948638ef3d9f6c752ec4c
Autor:
John A. Fornshell
Publikováno v:
Arthropods, Vol 12, Iss 4, Pp 260-275 (2023)
The study of pycnogonid diversity and biogeography began in the late nineteenth century with a series of 13 single ship cruises between 1870 and 1915. The rapid expansion of research on sea spiders was made possible by the availability of research sh
Externí odkaz:
https://doaj.org/article/f665f94d091640f092d8a60472bb342e
Autor:
John A. Fornshell
Publikováno v:
Arthropods, Vol 12, Iss 1, Pp 27-36 (2023)
The mechanoreceptors found on the larval stages and juvenile stage of squilloid stomatopods are investigated using photomicrographs and scanning electron micrographs. The frequency which may be detected by a sensillum is related to its length and the
Externí odkaz:
https://doaj.org/article/41bdf3112bf44f4193b5a4c01a58449d
Autor:
John A. Fornshell
Publikováno v:
Arthropods, Vol 11, Iss 3, Pp 127-134 (2022)
In this study trilobite larvae and early juvenile stages of Limulus polyphemus (Linnaeus, 1758) are examined using light microscopy and scanning electron microscopy to examine the mechanoreceptors present on the cuticle. Three forms of mechanorecepto
Externí odkaz:
https://doaj.org/article/f6d6709c5ba648c2b8e0a4d22a34594b
Autor:
John A. Fornshell
Publikováno v:
Arthropods, Vol 9, Iss 3, Pp 68-73 (2020)
There are three sound producing mechanisms employed in the Order Stomatopoda: (1) Sounds generated by raptorial appendages, the second maxillipeds used to attack prey organisms as described by Tirmizi and Kazmi (1984), Vetter and Caldwell (2015); (2)
Externí odkaz:
https://doaj.org/article/3e30403c793447a29a3ee9505872d664
Autor:
John A. Fornshell
Publikováno v:
Arthropods, Vol 9, Iss 2, Pp 27-31 (2020)
Members of the Malacostraca employ an escape swimming mode called a tail-flip. In this maneuver the uropods and telson are rapidly brought forward until they contact the ventral surface of the abdomen. This movement is the result of stimulation of th
Externí odkaz:
https://doaj.org/article/a18ae775533a4c69be2f5616a7ae1dbb
Autor:
John A. Fornshell
Publikováno v:
Arthropods, Vol 8, Iss 4, Pp 110-117 (2019)
Observations of wound healing and regeneration of walking legs in specimens of Nymphon australe Hodgson, 1902, Nymphon charcoti Bouvier, 1911, Colssendeis tortipalpus Gordon, 1932 and Pentapycnon charcoti Bouvier 1910 archived in the U. S. National M
Externí odkaz:
https://doaj.org/article/6cc809f8667d4e5b977af4cd0b77f9eb
Autor:
John A. Fornshell
Publikováno v:
Arthropods, Vol 8, Iss 2, Pp 45-52 (2019)
Using scanning electron microscopy, we describe the first and second post hatching stages of Nymphon australe Hodgson 1902. In the first post hatching stage the animals have a pair of three segmented cheliphores and a pair of three segmented larval a
Externí odkaz:
https://doaj.org/article/4f41af17ce59408bbc354ad49ece6115
Publikováno v:
Arthropods, Vol 8, Iss 1, Pp 1-6 (2019)
The first post hatching stage of Pentapycnon charcoti Bouvier is described for the first time. The eggs and first hatching stage were recovered from a cocoon carried on the ovigerous appendages of an adult male specimen archived in the collections of
Externí odkaz:
https://doaj.org/article/a0fa508529ef403c9cb22e0b276f3004
Autor:
John A. Fornshell, Alessandra Tesei
Publikováno v:
Arthropods, Vol 6, Iss 2, Pp 36-46 (2017)
The Achelata, lobsters lacking claws and having a phyllosoma larva, are divided into two families, the Palinuridae or spiny lobsters and the Scyllaridae or slipper lobsters. Within the Palinuridae adults of two groups were identified by Parker (1884)
Externí odkaz:
https://doaj.org/article/004cdfa97dd74e45ace19c295097725a