Gracilideres mawatarii, a new genus and species of Franciscideridae (Allomalorhagida: Kinorhyncha) - a kinorhynch with thin body cuticle, adapted to the interstitial environment
Publication date: Available online 5 June 2019Source: Zoologischer AnzeigerAuthor(s): Hiroshi YamasakiAbstractA new genus and species of Kinorhyncha, Gracilideres mawatarii gen. et sp. nov. is described from coarse subtidal sand, west of Tanegashima Island, Japan. The genus and species is characterized by a cylindrical neck with sparsely arranged longitudinal crimps at surface; segments 1–10 each consisting of a single cylindrical cuticular plate; middorsal and ventromedial string-like glandular cells on segments 1–9; primary pectinate fringes with pectinate fringe teeth on segments 1–10; lateral accessory pores on s...
Source: A Journal of Comparative Zoology - June 6, 2019 Category: Zoology Source Type: research
Deep-sea Kinorhyncha diversity of the polymetallic nodule fields at the Clarion-Clipperton Fracture Zone (CCZ)
This study is the first in a series focused on kinorhynchs mainly collected at the German zone following requirements of the International Seabed Authority (ISA), who demands identification of fauna associated with nodules previous to the concession of the exploitation license. A total of 18 species were found, of which three new Echinoderidae species are described herein. Cephalorhyncha polunga sp. nov. is easily discriminated from its congeners by the presence of pointed and prominent tergal extensions together with middorsal spines on segments 4-8, ventrolateral tubes on segment 2, lateroventral tubes on segment 5, late...
Source: A Journal of Comparative Zoology - June 6, 2019 Category: Zoology Source Type: research
Echinoderid mud dragons (Cyclorhagida: Kinorhyncha) from Senghor Seamount (NE Atlantic Ocean) including general discussion of faunistic characters and distribution patterns of seamount kinorhynchs
Publication date: Available online 6 June 2019Source: Zoologischer AnzeigerAuthor(s): Hiroshi Yamasaki, Birger Neuhaus, Kai Horst GeorgeAbstractInvestigation of Kinorhyncha from Senghor Seamount (tropical northeastern Atlantic Ocean) and the adjacent deep-sea floor revealed seven species of Echinoderes. Of these, Echinoderes kaempfae sp. nov. and Echinoderes schwieringae sp. nov. are described as new species. Echinoderes multiporus originally found on Eratosthenes Seamount, Mediterranean Sea, and Echinoderes cf. adrianovi originally found off Florida, northwestern Atlantic Ocean, were also recovered. In addition, three add...
Source: A Journal of Comparative Zoology - June 6, 2019 Category: Zoology Source Type: research
Diversity and community structure of kinorhynchs around Svalbard: first insights into spatial patterns and environmental drivers
Publication date: Available online 6 June 2019Source: Zoologischer AnzeigerAuthor(s): Katarzyna Grzelak, Martin V. SørensenAbstractKinorhyncha is usually one of the more neglected groups in meiofauna ecology. Although their presence is frequently reported in a number of ecological meiofaunal studies, knowledge on their taxonomic composition and distribution at the local and regional scale is very limited. Particularly for the Arctic region, no comprehensive ecological description of kinorhynch communities has yet existed. To address this gap in our knowledge, we compared kinorhynch community structure in different localit...
Source: A Journal of Comparative Zoology - June 6, 2019 Category: Zoology Source Type: research
North American Condyloderes (Kinorhyncha: Cyclorhagida: Kentrorhagata): female dimorphism suggests moulting among adult Condyloderes
Publication date: Available online 6 June 2019Source: Zoologischer AnzeigerAuthor(s): Martin V. Sørensen, David Thistle, Stephen C. LandersAbstractTwo new species of Condyloderes are described, C. rohalorum sp. nov. from the deep-sea off California, and C. flosfimbriatus sp. nov. from the continental shelf in the northern Gulf of Mexico. Additional species are furthermore reported from the two regions, including C. kurilensis from the Californian deep-sea, one potentially new species from each of the two regions, and the presence of specimens similar to, and potentially conspecific with, the two new species, i.e., Condylo...
Source: A Journal of Comparative Zoology - June 6, 2019 Category: Zoology Source Type: research
Investigation of echinoderid kinorhynchs described 90 years ago: redescription of Echinoderes capitatus (Zelinka, 1928) and Echinoderes ferrugineus Zelinka, 1928
Publication date: Available online 6 June 2019Source: Zoologischer AnzeigerAuthor(s): Hiroshi Yamasaki, Matteo Dal ZottoAbstractThe two kinorhynch species Echinoderes capitatus (Zelinka, 1928) and Echinoderes ferrugineus Zelinka, 1928 are redescribed herein, based on specimens collected at different Mediterranean locations. Echinoderes capitatus is characterized by the presence of middorsal acicular spine on segment 4 and lateroventral acicular spines on segments 6–9; at least three pairs of tubes on segment 2 (subdorsal, midlateral, and ventrolateral); subdorsal tubes on segment 8; laterodorsal tubes on segment 10; late...
Source: A Journal of Comparative Zoology - June 6, 2019 Category: Zoology Source Type: research
The enigmatic kinorhynch Cateria styx Gerlach, 1956 – a sticky son of a beach
Publication date: Available online 6 June 2019Source: Zoologischer AnzeigerAuthor(s): María Herranz, Maikon Di Domenico, Martin V. Sørensen, Brian S. LeanderAbstractSince its discovery in the mid-1950’ies, Cateria has been an enigmatic kinorhynch genus due to its aberrant worm-like shape and extremely thin cuticle. However, the rare occurrence of the species, only found in sandy intertidal habitats, and the poor preservation of the type material have hampered detailed studies of the genus over time. Now, sixty years after the original description of Cateria styx, we present an extensive morphological and functional stu...
Source: A Journal of Comparative Zoology - June 6, 2019 Category: Zoology Source Type: research
A new species and first record of Dracoderes (Kinorhyncha: Allomalorhagida: Dracoderidae) from American waters, with an identification key of the genus
Publication date: Available online 6 June 2019Source: Zoologischer AnzeigerAuthor(s): Diego Cepeda, Fernando Pardos, Nuria SánchezAbstractA new species of Dracoderes, D. spyro sp. nov., is described from Hispaniola Island (Caribbean Sea), and represents the first record of this genus in American waters. The new species is distinguished from its congeners by the presence of lateroventral spines on segments 3–4 and 6–9, lateral accessory spines on segment 5, lateroventral tubes on segments 2, 5 and 10, and laterodorsal tubes on segment 8. Additionally, a dichotomous key to the species level for the genus Dracoderes is i...
Source: A Journal of Comparative Zoology - June 6, 2019 Category: Zoology Source Type: research
Spatial distribution pattern of the aberrant Franciscideres kalenesos (Kinorhyncha) on sandy beaches of Southern Brazil
We described the abundance and distribution of the kinorhynch Franciscideres kalenesos on two intermediate-dissipative sandy beaches of Southern Brazil. For the Factorial sampling design (FSD), six transects at each beach were delimited and divided into two distinct profiles, sandbars and rip currents. Transects were divided into three hydrodynamic zones: shoaling zone, surf zone, and swash zone. At the Geospatial sampling design (GSD), six transects with six points at each transect were georeferenced along one sandbar and two rip currents. We used additive model selection for the FSD and geospatial interpolation for the G...
Source: A Journal of Comparative Zoology - June 6, 2019 Category: Zoology Source Type: research
Four new species of Kinorhyncha from the Gulf of California, eastern Pacific Ocean
Publication date: Available online 6 June 2019Source: Zoologischer AnzeigerAuthor(s): Cepeda Diego, Álvarez-Castillo Lucía, Hermoso-Salazar Margarita, Sánchez Nuria, Gómez Samuel, Pardos FernandoAbstractSeveral meiofaunal samples from the central and lower Gulf of California were studied. Four new species of kinorhynchs, Cristaphyes fortis sp. nov., Higginsium mazatlanensis sp. nov., Cephalorhyncha teresae sp. nov. and Echinoderes xalkutaat sp. nov., are described herein. Cristaphyes fortis sp. nov. may be distinguished from its most similar congeners by its more strongly developed pachycycli and ball-and-socket joints...
Source: A Journal of Comparative Zoology - June 6, 2019 Category: Zoology Source Type: research
Dungeons and Dragons: two new species and records of Kinorhyncha from anchialine cenotes and marine lava tubes
Publication date: Available online 6 June 2019Source: Zoologischer AnzeigerAuthor(s): Nuria Sánchez, Alejandro MartínezAbstractCaves are natural laboratories to investigate evolutionary processes in the ocean. In contrast to the many described lineages of cave exclusive crustaceans and annelids, very little is known about cave scalidophorans. We here describe two new species of kinorhynchs from a lava tube in the Canary Islands and a cenote in the Yucatan Peninsula. Leiocanthus bretti sp. nov., from Tenerife, is mainly characterized by the lack of middorsal structure specializations on all trunk segment, middorsal line c...
Source: A Journal of Comparative Zoology - June 6, 2019 Category: Zoology Source Type: research
Comparative phenotypic and structural adaptations of tongue and gastrointestinal tract in two bats having different feeding habits captured from Saudi Arabia: Egyptian fruit bat (Rousettus aegyptiacus) and Egyptian tomb bat (Taphozous perforatus)
Publication date: Available online 6 June 2019Source: Zoologischer AnzeigerAuthor(s): Ahmed A. El-Mansi, M.A. Al-Kahtani, Mohamed M.A. AbumandourAbstractOur study was mainly designed to describe the structural and functional adaptations of tongue and gastro-intestinal tract of Rousettus aegyptiacus (Ra) and Taphozous perforatus (Tp) in relation to their diets. Ten adult bats from each species captured and investigated using histological, histochemical and scanning electron microscopy (SEM). Our finding showed that tongue of both species carried mechanical and gustatory papillae. In Ra, the mechanical papillae were subdivid...
Source: A Journal of Comparative Zoology - June 6, 2019 Category: Zoology Source Type: research
First report of the family Zelinkaderidae (Kinorhyncha: Cyclorhagida) for the Caribbean Sea, with the description of a new species of Triodontoderes Sørensen and Rho, 2009 and an identification key for the family
Publication date: Available online 6 June 2019Source: Zoologischer AnzeigerAuthor(s): Cepeda Diego, Sánchez Nuria, Pardos FernandoAbstractA new species of Kinorhyncha, Triodontoderes lagahoo sp. nov., is described from Tobago Island, Caribbean Sea (western Atlantic Ocean) from a coastal, sandy habitat using both light and scanning electron microscopy. The species is characterized by the presence of middorsal acicular spines on segments 1–11 (that on segment 10 crenulated in males), laterodorsal crenulated spines on segment 10 only in males, lateroventral acicular spines on segments 3–4 and 6–8 (lateroventral spines ...
Source: A Journal of Comparative Zoology - June 6, 2019 Category: Zoology Source Type: research
Comparative morphology of the digestive tract of two Neotropical tree frogs (Genus Boana)
Publication date: Available online 29 May 2019Source: Zoologischer AnzeigerAuthor(s): Bruno S.L. Valverde, Lara Zácari Fanali, Lilian Franco-Belussi, Classius de OliveiraAbstractThe vertebrate digestive system, responsible for providing nutrients for maintaining body homeostasis, consists of two components in anurans: the digestive tract and the accessory glands. The digestive tract includes the oral cavity, pharynx, esophagus, stomach, and small and large intestine, ending in the cloaca. Morphological characteristics of the digestive tract are distinct between anuran species. In this work, we describe the digestive tract...
Source: A Journal of Comparative Zoology - May 30, 2019 Category: Zoology Source Type: research
Altitudinal variation of community metrics in Italian small mammal assemblages as revealed by Barn Owl (Tyto alba) pellets
Publication date: Available online 30 May 2019Source: Zoologischer AnzeigerAuthor(s): Giuliano Milana, Corrado Battisti, Luca Luiselli, Giovanni AmoriAbstractA databank on the pellets of a widespread owl species (the Barn Owl, Tyto alba) was used in order to evaluate the differences in taxonomical composition and community metrics of small mammals (Rodentia and Soricomorpha) along an altitude gradient in Italy. The databank consisted of data from 292 sites, with altitudes ranging between -6 and 1292 m a.s.l. GLM models showed that the number of Rodentia species decreased significantly with elevation gradient, but increased...
Source: A Journal of Comparative Zoology - May 30, 2019 Category: Zoology Source Type: research
