The life history and systematics of deep-sea lizard fishes, genus Bathysaurus (Synodontidae)

Bathysaurus agassizii was found to be a junior synonym of Bathysaurus ferox. The two valid species of the genus Bathysaurus, B. ferox and B. mollis, are circumglobal except beneath polar waters. Bathysaurus ferox is known mostly from depths of 1000 to 2500 m and temperatures of 4 to 3 °C; B. mollis is known mostly from 2500 to 4500 m and from 3.0 to 2.0 °C. In the Middle Atlantic Bight, the numerical density of B. ferox from trawl samples was 0–8 fish/25 × 103 m2; biomass was 0–8000 g for the same unit area. No clear "bigger–deeper" trend was evident for either species. Both species have been shown to be synchronous hermaphrodites. Mature gonads in B. ferox have been found in samples off Virginia from November through January; the mean fecundity found was 32 000 ova. Both species are predominantly piscivorous. A large, lipid-rich liver, probably an energy store, constituted up to 20% of the total weight in B. ferox and up to 5% in B. mollis. New records of pelagic postlarvae of both species have been reported. Postlarval development is probably gradual and prolonged, prior to a rapid transformation to the benthic juvenile stage. Postlarval development may occur in midwater within a few hundred metres of the surface.

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Update of the marine Bivalvia Mollusca checklist in Greek waters

Journal of the Marine Biological Association of the United Kingdom ◽

10.1017/s0025315405012014 ◽

2005 ◽

Vol 85 (4) ◽

pp. 993-998 ◽

Cited By ~ 15

Author(s):

Argyro Zenetos ◽

Evi Vardala-Theodorou ◽

Catherine Alexandrakis

Keyword(s):

New Species ◽

Deep Sea ◽

New Records ◽

Valid Species ◽

Marine Bivalve ◽

Bivalve Molluscs ◽

Mediterranean Species ◽

Fossil Species

Species of marine bivalve molluscs identified in the last nine years in the Greek waters have been used to update the checklist published in 1996 (Fauna Graeciae VII) by inserting necessary changes and adding new records. The updated version includes 13 new species among which three are exotics (non-Mediterranean species), five rare, two new deep sea and one previously considered a fossil species. Also, as a result of new resources, the distributions of pre-existing native molluscs have been updated to include new habitat areas. The nomenclature is also up to date based on the CLEMAM Database. Thus five species are now excluded either because they are junior synonyms of pre-existing valid species (2) or because of old spurious records (3 species). Additions and corrections of the 1996 checklist have resulted in a total of 308 bivalves in Greek waters.

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New records of brittle stars (Echinodermata: Ophiuroidea) from the Lakshadweep atolls, northern Indian Ocean, with notes on Indophioderma ganapatii Sastry, Marimuthu & Rajan, 2019

Zootaxa ◽

10.11646/zootaxa.4809.3.9 ◽

2020 ◽

Vol 4809 (3) ◽

pp. 560-570

Author(s):

USHA V. PARAMESWARAN ◽

B. MOHAMMED NOWSHAD ◽

SUDHANSHU DIXIT ◽

HASHIM MANJEBRAYAKATH ◽

K.K. IDREESBABU ◽

...

Keyword(s):

Indian Ocean ◽

Deep Sea ◽

New Records ◽

Valid Species ◽

Northern Indian Ocean ◽

Brittle Stars ◽

Shallow Reef ◽

Indian Waters ◽

Lakshadweep Islands

The paper presents three new records of brittle stars for Indian waters, collected from the Lakshadweep atolls (northern Indian Ocean)—Ophiarachnella septemspinosa (Müller & Troschel, 1842), Ophiocoma cynthiae Benavides-Serrato & O’Hara, 2008 & Ophiomoeris obstricta (Lyman, 1878). Further, this paper also discusses the validity of two recently described taxa from this archipelago, the genus Indophioderma with the species Indophioderma ganapatii Sastry, Marimuthu & Rajan, 2019. A checklist of brittle stars reported so far from the Lakshadweep Islands is provided, which includes 40 valid species—32 from shallow (reef) areas and 8 deep-sea (>200m) species.

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Flight speed, foraging efficiency, and daily energy budget of the Barn Swallow, Hirundo rustica

Canadian Journal of Zoology ◽

10.1139/z97-140 ◽

1997 ◽

Vol 75 (7) ◽

pp. 1176-1183 ◽

Cited By ~ 1

Author(s):

Horacio de la Cueva ◽

Robert W. Blake

Keyword(s):

Doppler Radar ◽

Flight Speed ◽

Hirundo Rustica ◽

Foraging Efficiency ◽

Barn Swallow ◽

Aerodynamic Model ◽

Daily Energy ◽

Energy Store ◽

The Mean ◽

Barn Swallows

Aerodynamic power equations predict optimal speeds at which birds ought to fly if they are to maximize time spent in the air on a given energy store (minimum power speed, Vmp), distance covered using a given amount of fuel (maximum range speed, Vmr), and rate of delivering food to the chicks in the nest (Vnest), or maximize the daily energy balance (VDBAL). With the aerodynamic model employed, these speeds are 5.3, 7.0, 7.9, and 8.9 m∙s−1, respectively, for the Barn Swallow, Hirundo rustica. A comparison of the predicted flight speed with both the mean and median flight speeds (8 m∙s−1 in both cases; n = 821) recorded with Doppler radar indicates that Barn Swallows fly at speeds not significantly different from Vnest. The true sample size was unknown, and realistic sample sizes are drawn with bootstrap procedures and compared with those given by the number of measurements (821); no significant differences were found. To test the model, energy requirements for growth, prey density, and time spent foraging were varied independently in a sensitivity analysis. Large but realistic changes in these three variables do not contradict the model and predict speeds within the range measured in the field.

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DNA barcoding and phylogenetic relationship of shrimps (Crustacea: Decapoda) of Bangladesh

Bioresearch Communications ◽

10.3329/brc.v7i1.54248 ◽

2021 ◽

Vol 7 (1) ◽

pp. 941-946

Author(s):

Md Sagir Ahmed ◽

Sumaiya Salam ◽

Sayeda Sabrina Sarwar Rumana ◽

Anindita Barua

Keyword(s):

Dna Barcoding ◽

Genetic Divergence ◽

New Records ◽

Coi Gene ◽

Identification System ◽

Taxonomic Rank ◽

Macrobrachium Nipponense ◽

Shrimp Species ◽

The Mean ◽

Relationship Of

We adopted DNA barcoding technique using a 658-bp fragment of the mitochondrial cytochrome c oxidase I (COI) gene to identify shrimp species collected from the different areas of Bangladesh. A total of 24 sequences were generated belonging to 14 species including four new records- Macrobrachium nipponense, Macrobrachium kistnense, Exopalaemon carinicauda and Alpheus malleator. Genetic distance measured with Kimura 2 parameter showed that genetic divergence increased with higher taxonomic rank. The mean genetic divergence was evaluated and found to be 0.935%, 22.67% and 30.92% within species, genus and family, respectively. In addition to the barcode-based species identification system, phylogenetic relationships were established where individuals belonging to the same species were grouped under the same clade. Maximum likelihood (ML) was preferred as the statistical method and as expected, the phylogenetic tree complemented and ensured the conventional taxonomy. The present study evidently showed that DNA barcoding can be served as an effective tool to discriminate the shrimp species and this will enhance the understanding on evolution and conservation biology. Bioresearch Commu. 7(1): 941-946, 2021 (January)

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New records of Pseudotachidiidae from South Korea, including a key to species of the Pseudomesochrinae (Copepoda: Harpacticoida)

Zootaxa ◽

10.11646/zootaxa.5051.1.16 ◽

2021 ◽

Vol 5051 (1) ◽

pp. 387-422

Author(s):

JONG GUK KIM ◽

JIMIN LEE ◽

RONY HUYS

Keyword(s):

South Korea ◽

New Records ◽

East Asian ◽

Relative Length ◽

Valid Species ◽

Key To Species ◽

General Shape ◽

Abdominal Somite ◽

Western Norway ◽

Female Genital

Two species of the marine harpacticoid family Pseudotachidiidae (Copepoda) are reported from subtidal sediments in the Southern Sea of Korea. Psammis wellsi sp. nov. (Danielsseniinae) is most closely related to P. longisetosa Sars, 1910 but differs from its European congener in the ventral ornamentation of the female genital double-somite, the dorsal ornamentation of the second abdominal somite in the male, the armature of the proximal endite of the maxillary syncoxa, the relative setal lengths and general shape of the female P5, and the relative length of the inner seta of the male P5 endopodal lobe and P6. The female of Pseudomesochra tatianae Drzycimski, 1968 is redescribed in detail, constituting the only other record of the species since its discovery at the type locality in western Norway. East Asian records of members of the four subfamilies currently recognized in the Pseudotachidiidae are summarized. Published and other records of the 23 described species in the Pseudomesochrinae are collated and their armature patterns of P1–P5 are tabulated and corrected where necessary. Pseudomesochra affinis (Sars, 1920) is removed from its synonymy with P. longifurcata T. Scott, 1902 and formally reinstated as a valid species. An updated female-based key to the 19 valid species of Pseudomesochra T. Scott, 1902 and four species of Keraia Willen & Dittmar, 2009 is presented.

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NUEVOS HALLAZGOS Y DISTRIBUCIÓN DE ALGUNAS ESPECIES DE AGUAS PROFUNDAS DEL PACÍFICO DE COLOMBIA II. CALLIONYMIDAE (TELEOSTEI)

Bulletin of Marine and Coastal Research ◽

10.25268/bimc.invemar.2016.45.1.637 ◽

2016 ◽

Vol 45 (1) ◽

Author(s):

Beatriz Susana Beltrán León ◽

Raúl Ríos Herrera ◽

Efraín Rubio Rincón

Keyword(s):

Deep Sea ◽

Pacific Coast ◽

New Records ◽

Distribution Range ◽

Adult Fish ◽

The South ◽

Fishing Fleet ◽

The North ◽

The Family ◽

Colombian Pacific

We present new records of larvae and adult fish from the family Callionymidae in the Colombian Pacific coast. Larvae and juvenile of Synchiropus atrilabiatus (Garman 1899), expands its distribution range within this coast (between Tumaco in the South to the border with Panama in the North), presenting low to medium abundances in September-October 2002, 2003, 2004, 2005 and February-March 2006, 2014. Larvae were always collected at stations 54 km away from the coast. Adults of S. atrilabiatus were collected as bycatch from the deep-sea shrimp fishing fleet between 67-700 m depth at Bahía Cupica in 1995 and Arusí in 2005.

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New records of Benthesicymus Bate, 1881 (Dendrobranchiata, Penaeoidea, Benthesicymidae) from the abyssal depths of Taiwan

ZooKeys ◽

10.3897/zookeys.838.33051 ◽

2019 ◽

Vol 838 ◽

pp. 1-8 ◽

Cited By ~ 1

Author(s):

Chien-Hui Yang ◽

Tin-Yam Chan

Keyword(s):

Deep Sea ◽

New Records ◽

Marine Animal

The deep-sea Benthesicymus shrimps generally inhabit waters deeper than 1000 m deep. Recent deep-sea cruises off Taiwan collected two species of Benthesicymus Bate, 1881 from the abyssal depths greater than 3,000 m. They are B.crenatus Bate, 1881 and B.laciniatus Rathbun, 1906. Both of them are new records for Taiwan, with B.crenatus also representing the deepest (5,314 m) marine animal so far known for the island. The major distinguishing characters of these two species are described and illustrated.

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3. Reproduction and life history

Amphibians: A Very Short Introduction ◽

10.1093/actrade/9780198842989.003.0003 ◽

2021 ◽

pp. 48-71

Author(s):

T. S. Kemp

Keyword(s):

Life History ◽

Life Cycle ◽

Parental Care ◽

Juvenile Stage ◽

Number Of Species ◽

Area Of Interest ◽

Rapid Transformation

‘Reproduction and life history’ discusses the life cycle of amphibians, which includes a fully aquatic, juvenile stage. This is the larva, known in the anurans as the tadpole. It feeds and grows, and eventually undergoes a rapid transformation, or metamorphosis, into the adult. Metamorphosis can take place in as little as nine days from the eggs hatching. A small number of species in all three amphibian orders have evolved the most complete mode of parental care of all, viviparity, which is bearing the young live. An area of interest here is the courtship and mating practices of amphibians.

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Polychaetes from Santa Catarina State (southern Brazil): checklist and remarks on species distribution

Zootaxa ◽

10.11646/zootaxa.3486.1.1 ◽

2012 ◽

Vol 3486 (1) ◽

pp. 1 ◽

Cited By ~ 2

Author(s):

PAULO ROBERTO PAGLIOSA ◽

JOÃO GABRIEL DORIA ◽

GIORGIA FREITAS ALVES ◽

TITO CESAR MARQUES DE ALMEIDA ◽

LUCIANO LORENZI ◽

...

Keyword(s):

Species Distribution ◽

New Records ◽

Progressive Increase ◽

Water Masses ◽

Valid Species ◽

Southern Brazil ◽

Santa Catarina ◽

Rarefaction Curves ◽

Occurrence Of Species ◽

Santa Catarina State

This study summarizes taxonomic information on polychaetes from Santa Catarina State, southern Brazil, between25º57'S and 29º23'S, and provides species distribution records together with information on habitats, based on historicaldata and novel records from primary surveys. Rarefaction curves showed that most species were found in the shallowsublittoral (to 60 m) rather than in deep sublittoral (>60 m) or estuarine habitats. Altogether, 228 valid species belongingto 141 genera and 44 families were recorded. This inventory adds 141 new records to previous regional reports. We founda shift in occurrence of species when comparing data from the study area with data from both southward (29–33º S) andnorthward (23–26º S) sites. Few species were shared between consecutive sites: this could be a response to the regionalbehaviour of the atmosphere and water masses, with a progressive increase in the influence of subantarctic waters and a decrease in the influence of subtropical waters.

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