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The relationship between humidity, light and the activity pattern of a velvet worm, Epiperipatus sp. (Onychophora: Peripatidae), from Bahía Drake, South Pacific of Costa Rica
(Instituto Internacional de Ecología (Brasil), 2018-10-31)
Even though the Onychophora represent a whole phylum, observations of their activity pattern in nature are almost
non-existent. Here we report on the relationship between humidity and light and activity pattern of a new ...
Velvet Worms (Onychophora) in Folklore and Art: Geographic Pattern, Types of Cultural Reference and Public Perception
(Sciencedomain International (India), 2015-07-06)
Aims: To document and preserve folkloric beliefs and art inspired by velvet worms (Onychophora), rare invertebrates that are considered "living fossils", have full placental organs and capture prey with a rough "net" built ...
¿Qué sabemos realmente sobre el apareamiento de los onicóforos?
(Universidad de Costa Rica (Costa Rica), 2019)
Tras más de un siglo de estudio y a pesar de que hay más de 200 especies de onicóforos, solamente contamos con tres observaciones del apareamiento en sí. La inseminación se puede dar cuando el macho insemina vaginalmente ...
What do we really know about how velvet worms mate?
(Universidad de Costa Rica (Costa Rica), 2019)
After more than a century of studying a phylum that has over 200 species, we only have three reports of the mating itself. Insemination can occur vaginally or through the skin, and it is suspected that the male simply ...
¿Por qué los onicóforos requieren tanto tiempo de gestación como los camellos?
(Universidad de Costa Rica (Costa Rica), 2019)
Uno de los muchos misterios que rodean a los onicóforos, es porqué, siendo tan pequeños, tienen períodos de gestación tan largos como algunos mamíferos. Acá proponemos que esto se debe a su alimentación infrecuente y al ...
Dos maneras de ser un onicóforo
(Universidad de Costa Rica (Costa Rica), 2019)
Hay dos maneras de ser un onicóforo. Una es aparearse vaginalmente a corta edad, dar a luz en cualquier mes y tener machos pequeños y escasos. La otra es inseminar periódicamente por la pared corporal, con igualdad sexual ...
Why do onychophorans and camels need the same gestation time?
(Universidad de Costa Rica (Costa Rica), 2019)
One of the many mysteries surrounding onychophorans, is why, despite their small body size, they have gestation periods that are as long as gestation in some mammals. Here we propose that the causes are infrequent feeding ...
Two ways to be a velvet worm
(Universidad de Costa Rica (Costa Rica), 2019)
There are two ways to be a velvet worm. One is to mate vaginally at a young age, give birth in any month and have small, scarce males. The other is to periodically inseminate through the body wall, with sexual equality in ...
Why do some Australian onychophorans have fantastic heads?
(Universidad de Costa Rica (Costa Rica), 2019)
Males of some Australian onychophorans transfer their spermatophores with spectacular structures in their head, such as pits with palps and spines. No one has explained why these structures allow this species to be identified. ...
¿Por qué algunos onicóforos australianos tienen cabezas fantásticas?
(Universidad de Costa Rica (Costa Rica), 2019)
Los machos de algunos onicóforos australianos transfieren sus espermatóforos con estructuras espectaculares en la cabeza, como fosos con palpos y espinas. Nadie ha explicado por qué estas estructuras permiten identificar ...