Results 41 to 50 of about 1,642 (229)

Les microhabitats d’Eudactylina similis T.scott, 1902 copépode parasite de Raja asterias Delaroche, 1809 (Elasmobranchii, Rajidae) des côtes algéroise [PDF]

open access: yes, 2022
 Les microhabitats d’Eudactylina similis T.scott, 1902 copépode parasite de Raja asterias Delaroche, 1809 (Elasmobranchii, Rajidae) des côtes algéroise 
Imane DEROUICHE (12996114)   +1 more
core   +1 more source

Les microhabitats branchiaux d’Eudactylina similis T.scott, 1902 (Crustacea : Copepoda) parasite de Raja radula Delaroche, 1809 (Elasmobranchii, Rajidae) en Algérie [PDF]

open access: yes, 2022
 Les microhabitats branchiaux d’Eudactylina similis T.scott, 1902 (Crustacea : Copepoda) parasite de Raja radula Delaroche, 1809 (Elasmobranchii, Rajidae) en Algérie 
Imane DEROUICHE (12996114)   +1 more
core   +1 more source

Bacterial community dynamics during embryonic development of the little skate (Leucoraja erinacea)

open access: yesAnimal Microbiome, 2021
Background Microbial transmission from parent to offspring is hypothesized to be widespread in vertebrates. However, evidence for this is limited as many evolutionarily important clades remain unexamined.
Katelyn Mika   +3 more
doaj   +1 more source

Individual Variation in Philopatry Is Unrelated to Activity and Space Use in the Undulate Skate <i>Raja undulata</i>. [PDF]

open access: yesEcol Evol
Consistent individual variation in fine‐scale movement traits is unrelated to movements occurring at larger spatio‐temporal scales in undulate skates (Raja undulata). ABSTRACT Individual variation in behavior is widespread in animals. Movement traits, which describe how individuals interact with their environment, can vary across a range of spatial and
Hillinger A   +5 more
europepmc   +2 more sources

Reproductive Anatomy of Chondrichthyans: Notes on Specimen Handling and Sperm Extraction. I. Rays and Skates

open access: yesAnimals, 2021
The superorder Batoidea (rays, skates, and relatives), constitutes one of the most threatened group of vertebrates. Strengthening ex situ conservation programs developed in research centers and public aquaria could be a way of addressing this situation ...
Pablo García-Salinas   +2 more
doaj   +1 more source

Caliraja gen. nov., a new skate genus (Rajiformes: Rajidae) from the eastern North Pacific

open access: yesRevista de biologia marina y oceanografia, 2022
A new genus of skate (Caliraja gen. nov.) is described based on egg case morphology and the number of embryos per egg case. Caliraja gen. nov. egg cases differ from those of the genus Beringraja by a combination of following characteristics: egg cases ...
D. Ebert
semanticscholar   +1 more source

The contribution of isopods in the feeding of Sympterygya spp (pisces: rajidae) with a description of Ancinus gaucho sp. n. (isopoda: sphaeromatidae)

open access: yesBrazilian Journal of Oceanography, 1987
The present paper deals with the isopods present in the stomach content of Sympterygia acuta and S. bonapartei, two species of Rajidae frequently found along Rio Grande do Sul coast.
Ana Maria Setubal Pires
doaj   +1 more source

Anatomy of the neurocranium, encephalon, and main sensory organs of the roundel skate, Rostroraja texana (Rajiformes: Rajidae)

open access: yesRevista de biologia marina y oceanografia, 2022
The organization of the neurocranium, the encephalon, and the main sensory organs of Rostroraja texana (Family Rajidae) corresponds to the general morphological pattern of the elasmobranchs and, in particular, of the batoids.
A. Kobelkowsky, C. Ramírez‐Díaz
semanticscholar   +1 more source

Revision of the fossil batomorphs from the Cretaceous of Lebanon, and their impact on our understanding of the early step of the evolution of the clade [PDF]

open access: yesResearch & Knowledge, 2017
Lebanon is endowed with its outstanding preservation lagerstätten of fossil fish from the Upper Cretaceous. The batomorphs are represented by 16 species of Rajiformes belonging to 9 genera and 4 families however, their phylogeny remains poorly understood.
Georges Kachacha   +3 more
doaj   +1 more source

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