Maria Eugenia Manjón-Cabeza

• University of Malaga

The Avilés Canyon System (ACS) is located at the Southern Bay of Biscay (Northern Spain, Cantabrian Sea). The ACS occupies a total of 339.026 ha and is composed of three canyons, reaching the abyssal plain at 4700 m depth. Water masses that mix in the area form gyres and upwelling that contribute to increasing the nutrients at different depths, whi...

The Avilés Canyons System (ACS) is located in the South of the Bay of Biscay (Northern Spain, Cantabrian Sea) and covers a total of 3,390 km². It is composed of three canyons, reaching the abyssal plain at 4700 m depth. The mixing of diverse water masses generates gyres and upwellings that contribute to the enrichment in nutrient concentration at d...

The main target of this paper is to improve the knowledge of the species composition of sea stars in Patagonian Argentine deep sea reaching depths of 2062 m. In addition, these results offer us the opportunity to analyze the possible connections between Argentinian marine fauna and adjacent Antarctic areas that have become a topic of interest in th...

Macro and megafauna were studied in the Aviles Canyon System (ACS), southern Bay of Biscay (Cantabrian Sea), during several oceanographic cruises carried out from 2009 to 2017. The biodiversity of ACS is summarized and its description is herein updated after sampling surveys of several programmes (ECOMARG, INDEMARES, SponGES) conducted by the Spani...

This study analyzes the fauna composition of the community of brittle and sea stars associated with sponge aggregations located in Avilés Canyons System and El Cachucho, Marine Protected Area (MPA). Diverse sampling methods were used depending on bottom morphology, such as rock dredges and specific samplers for sedimentary bottoms, mainly beam traw...

The holothurian Lissothuria braziliensis is herein reported for the first time from the intertidal rocky shore of Gran Canaria Island (Canary Islands). This constitutes the first record of the genus Lissothuria in the eastern Atlantic Ocean. We present a detailed diagnosis and illustrations of the species and its ossicles, together with brief notes...

Three species of the genus Asterina are known to inhabit the Mediterranean Sea and the north-eastern Atlantic Ocean: Asterina gibbosa (Pennant, 1777), A. pancerii (Gasco, 1870) and A. phylactica Emson & Crump, 1979. Differentiation of these species has primarily been based only on subtle characters (some highly debatable), such as colour or size. T...

Although scientific knowledge about the biodiversity of Antarctic benthic hydrozoans has considerably increased in recent years, little is known about their spatial distribution and underpinning factors. Trying to contribute to filling this gap, benthic hydroid spatial distribution in the Bellingshausen Sea (Southern Ocean) was studied. Samples wer...

The Bellingshausen Sea is one of the most remote and least surveyed seas of the Southern Ocean, so that little was known about benthic communities and those factors that determine community structuring until recently. The present work aims at characterizing the structure and spatial distribution of echinoid assemblages in the Bellingshausen Sea, as...

Data on the reproductive biology of the genus Hippolyte are available from studies of Hippolyte inermis. These findings support the idea that these species are protandric hermaphrodites, exhibiting sex reversal. However, recent studies of this and other species, such as Hippolyte obliquimanus and Hippolyte williamsi, have not reported sex reversal...

The present work completes a series of studies on the biology of the shrimp Hippolyte inermis Leach 1815, where we suggested the species to be gonochoristic. The morphology of the male reproductive system (testes, vasa deferentia, gonopores) and the different stages of male germ cell development are described for the first time in the genus Hippoly...

The marine ecosystem on the eastern shelf of the Antarctic Peninsula was surveyed 5 and 12 years after the climate-induced collapse of the Larsen A and B ice shelves. An impoverished benthic fauna was discovered, that included deep-sea species presumed to be remnants from ice-covered conditions. The current structure of various ecosystem components...

La selección de un espacio natural para su protección, con la figura legal que sea, se basa en la concurrencia de una serie de factores y criterios variados no excluyentes. Entre éstos podemos citar la presencia de singularidades, la existencia de una riqueza excepcional, la presencia de especies y/o hábitats que se encuentran amenazadas, etc. Aten...

The Hippolyte inermis Leach 1815 population from Zostera marina beds in southern Spain showed two recruitment periods that occurred simultaneously for both sexes (from September to December and from April to June), in a size range between 1.67 and 1.90 mm carapace length, due to gonadal activity and eggs hatching in summer and winter. The estimated...

Three new species of holothuroids from the Antarctic Peninsula and Bellingshausen Sea are described, with O’Loughin & Manjón-Cabeza as authors: dendrochirotids Cucumaria dudexa sp. nov., Psolicrux iuvenilesi sp. nov.; myriotrochid Myriotrochus hesperides sp. nov. Parathyonidium incertum Heding is discussed. Two synonymies for Antarctic holothuroids...

Three new species of holothuroids from the Antarctic Peninsula and Bellingshausen Sea are described, with O'Loughin & Manjón-Cabeza as authors: dendrochirotids Cucumaria dudexa sp. nov., Psolicrux iuvenilesi sp. nov.; myriotrochid Myriotrochus hesperides sp. nov. Parathyonidium incertum Heding is discussed. Two synonymies for Antarctic holothuroids...

FIGURE 1. a – c, Cucumaria dudexa O’Loughin & Manjón-Cabeza sp. nov.: a, holotype (MNCN 29.04 / 125), lateral view, oral end right, radial (left) and interradial plates of calcareous ring (insert); b, body wall ossicles (slides NMV F 161513, F 161514); c, tentacle ossicles (slide F 161512). d – f, Parathyonidium incertum Heding, 1954: d, lateral vi...

FIGURE 2. a – c, Psolicrux iuvenilesi O’Loughin & Manjón-Cabeza sp. nov.: a, holotype (MNCN 20.04 / 128), lateral view, radial (left) and interradial plates of the calcareous ring (insert); b, spired plates (slide F 161523 from holotype) and spire from body wall (slide from specimen F 68053); c, tentacle ossicles (slide from specimen F 68053). d, P...

The structure of decapod crustacean assemblages living in shallow waters (5 to 25 m depth) in an area of the Alboran Sea (Mediterranean Sea) neighbouring the Strait of Gibraltar was studied. The relatively high richness found in this area is probably due to the diversity of substrata and the confluence of Atlantic and Mediterranean waters. The most...

During the BENTART 2006 Expedition, a specimen of the galatheid Munidopsis albatrossae (Crustacea, Decapoda) was sampled in the Bellingshausen Sea, at 1920m depth on soft bottoms. This specimen represents the first record of the family for Antarctic waters. This and other recent records have substantially increased the known species richness of dec...

The structure of decapod crustacean assemblages living in shallow waters (5 to 25 m depth) in an area of the Alborán Sea (Mediterranean Sea) neighbouring the Strait of Gibraltar was studied. The relatively high richness found in this area is probably due to the diversity of substrata and the confluence of Atlantic and Mediterranean waters. The most...

The structure and spatial distribution of the macrofauna community of the Bellingshausen Sea in the western sector of Antarctica was studied during the ‘BENTART–06’ oceanographic expedition. This is one of the least explored Antarctic seas. A total of 20 box cores were sampled at 11 stations ranging from 157 to 3,304m depth, using an USNEL-type box...

The study of a decapod community in a Cymodocea nodosa meadow from Southeastern Spain (Western Mediterranean Sea) showed a stable structure, in which the families Hippolytidae, Processidae, Majidae and Portunidae were the most abundant and the species Hippolyte niezabitowskii dominated. The animal community was more numerous and diverse during the...

The majority of the published data about the reproductive biology of the decapod shrimp, Hippolyte inermis support the idea that this species is a protandric hermaphrodite, as is reported to be the case for certain other caridean species. However, our studies, based on the relative growth of the male reproductive appendage and histological examinat...

During the Bentart-2003 Cruise, carried out during austral summer 2003 in the Bellingshausen Sea, three species of Lithodidae, Paralomis birsteini, Lithodes murrayi and Neolithodes capensis, were caught from 218m to 1947m. With these captures the presence of L. murrayi in Peter I Island is confirmed, the distribution area of N. capensis is greatly...

A total of 126 species of decapods were collected in the soft bottoms of the macrolagoon of the Sabana-Camagüey Archipelago and Cardenas Bay (North coast of Cuba). The faunistic data pooled by sectors (Cardenas Bay, Santa Clara Bay, Fragoso Key to San Juán de los Remedios, Buenavista Bay-Coco Key and Perros Bay-Sabinal) and the environmental charac...

The capture of a specimen of Sphoeroides spengleri (Osteichthyes: Tetraodontidae), 17 December 2000 and 29·7 mm total length, from the Málaga coast (Alborán Sea, western Mediterranean) represents the first record of a new alien species for Mediterranean waters.

During the BENTART 95 survey, epifauna was sampled with an Agassiz trawl at 24 stations ranging from north of Livingston Island (South Shetland Islands) to the Antarctic Peninsula at depths from 40 to 850m. Four assemblages of ophiuroids were identified and correspond to Deception Island, Trinity Island, and the southern and northern zones of Livin...

Durante la Campaña Bentart 95 se muestreó el macrozoobentos en 24 estaciones con draga de arrastre Agassiz y a profundidades comprendidas entre 40 y 850 m, sobre un recorrido que cubrió desde el norte de la isla Livingston hasta la península Antártica. A partir de los datos de abundancia obtenidos se analiza la distribución de Ophionotus victoriae...

The present paper presents an overview of the studies on the genus Paguristes from the Caribbean Sea and more specifically from Cuban waters. Additionally, the hermit crabs belonging to the genus Paguristes collected during different surveys of the "Instituto de Oceanología de Cuba" on the Cuban coast have been listed. A new species of hermit crab,...

[A study of the specimens obtained during the "Fauna I" Expedition, held in the south of Spain in 1989, has provided the first record of Galathea capillata for Europe. Also, we found in these Spanish waters the morph P. neglectus of Philocheras bispinosus, which remains of uncertain taxonomic status. In addition, a check-list of Galathea species kn...

The incidence of foot nipping was studied on the Donax spp. of the littoral of Málaga (Southern Spain, 2875 specimens collected from February 1990 to January 1991) and of Ré island (French Atlantic coast, 262 specimens of Donax vittatus (Da Costa, 1778) collected in May 1996). In Málaga, Donax trunculus L., 1758 was the species most regularly nippe...

Frequency and distribution of asteroid genera in the South Shetlands zone are analysed, based on data from 24 Agassiz trawls carried out during the Bentart 95 Survey. Asteroids were collected at more than 90 % of the stations, on all types of bottoms, with richness per station ranging from 0-10 genera. The specimens belonged to 27 genera and 12 fam...

The morphological reproductive aspects of male of the hermit crab Diogenes pugilator have been studied. The different germ cell development stages have been reported. In addition, the zones of the vas deferens, according to their anatomy and the spermatophore formation, and the gonopore zone have been described. The histological data obtained have...

The morphological reproductive aspects of male of the hermit crab Diogenes pugilator have been studied. The different germ cell development stages have been reported. In addition, the zones of the vas deferens, according to their anatomy and the spermatophore formation, and the gonopore zone have been described. The histological data obtained have...

The ovary structure of the hermit crab Diogenes pugilator (Crustacea: Decapoda), is described in the different phases using electron microscopy. Sexual maturity was reached at a very small size; females from 0.74 mm shield length (SL) could be found in vitellogenesis stage and even 0.6 mm SL ovigerous females exist. The biometric study of the ovige...

Gastropod shells used by the three dominant hermit crabs, Diogenes pugilator (Roux, 1829), Paguristes eremita (Linnaeus, 1767), and Pagurus forbesii Bell, 1845, of the detritic littoral bottoms from Barbate Bay (Cadiz, Spain) were analyzed. The study showed that these hermit crabs species have different patterns of gastropod shell use. Paguristes e...

The relative growth of the dominant hermit crabs (Decapoda, Anomura), i.e., Diogenes pugilator, Anapagurus alboranensis, A. hyndmanni, Pagurus forbesii, and Paguristes el eremita, of littoral detritic bottoms (15-24 m deep) from southern Spain (Barbate Bay, near the Straits of Gibraltar) has been studied. Both the increase in cheliped length and in...

A population of the hermit crab Diogenes pugilator from the northeastern Atlantic (Barbate, Straits of Gilbraltar, Spain) was studied. The results show continuous recruitment throughout the year, within a size range from 0.4-1.02 mm in cephalothoracic shield length, as a consequence of the prevalence of ovigerous females throughout the year. The se...

Preliminary samples taken from Zostera marina beds on the Mediterranean coast of southern Spain, have allowed us to obtain three species of Hippolyte. One of them, Hippolyte niezabitowskii, represents the first record for Spain and the western Mediterranean. Also, the morphology of the present material shows clear differences with that of specimens...

Four specimens of the brachyuran crab Liocarcinus mcleayi (Barnard, 1947) (new combination), were captured from the Cadiz littoral (southern Spain) on a substratum of coarse sand and fine gravel under bottom currents at depths of 13 to 24 m. These captures represent a new record of this species from Iberian and European waters and support the known...

A study of the specimens obtained during the " Fauna I" Expedition, held in the south of Spain in 1989, has provided the é rst record of Galathea capillata for Europe. Also, we found in these Spanish waters the morph P. neglectus of Philocheras bispinosus , which remains of uncertain taxonomic status. In addition, a check-list of Galatheaspecies kn...

During 1993–1994 the decapod crustacean community of littoral detritic bottoms (15–24 m deep) from Southern Spain (Barbate Bay, near the Straits of Gibraltar) were studied. The substrata include coarse sand, fine gravel, Amphioxus sand, and contain abundant bioclastic remains (bivalve and gastropod shells), which are under the influence of bottom c...