Results 101 to 110 of about 1,745 (173)

Population Structure of the Tub Gurnard (Chelidonichthys lucerna Linnaeus, 1758) in Türkiye Coasts Using Otolith Chemistry and Shape Analysis

open access: yesÇanakkale Onsekiz Mart University Journal of Marine Sciences and Fisheries
Chelidonichthys lucerna is an economically important demersal species. It is under excessive fishing pressure and yields from fisheries are in decline in Türkiye. Information about the species' population structure and habitat connections is limited.
Sibel Atak Sanduvaç , Ali İşmen
doaj   +1 more source

Über die Entwicklung der Sagitta [PDF]

open access: yes
ÜBER DIE ENTWICKLUNG DER SAGITTA Johannes Müller Library (-) Über die Entwicklung der Sagitta (-
Gegenbaur, Carl
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Predation by Sagitta on Larval Fish in Earthen Pond [PDF]

open access: yes, 1984
Observations of predation by Sagitta on larval red sea bream, Pagrus major were carried out in an earthen pond. The specimens of Sagitta were collected quickly by hand-net from the culture pond to avoid predation during sampling procedure.
フクハラ, オサム   +7 more
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Desarrollo de la sagitta en juveniles y adultos de Odontesthes argentinensis (Valenciennes, 1835) y O. bonariensis (Valenciennes, 1835) de la provincia de Buenos Aires, Argentina (Teleostei: Atheriniformes) Development of the sagitta in young and adults of Odontesthes argentinensis (Valenciennes, 1835) and Odontesthes bonariensis (Valenciennes, 1835) from Buenos Aires province, Argentina (Teleostei: Atheriniformes)

open access: yesRevista Chilena de Historia Natural, 2005
Se describió el desarrollo del otolito Sagitta de juveniles y adultos de Odontesthes argentinensis procedentes de Punta Rasa (36°22' S) y Miramar (38°16' S) y de Odontesthes bonariensis de la Laguna de Chascomús (35° 36' S).
ANDREA D TOMBARI   +2 more
doaj  

Distribution, abundance and biomass of Chaetognaths off São Sebastião region, Brazil in February 1994

open access: yesBrazilian Journal of Oceanography, 2002
The distribution, abundance, biomass, population structure and feeding habits of chaetognaths collected off São Sebastião region, Brazil, in February 1994 are described. Bongo nets were hauled obliquely to collect zooplankton samples. Forty-three samples
Tsui-Hua Liang, Luz Amelia Vega-Perez
doaj   +1 more source

Development and survival of Podisus maculiventris (Say) and Podisus sagitta (Fab.) (Heteroptera: Pentatomidae) at various constant temperatures [PDF]

open access: yes, 1992
Development and survival of the predatory pentatomids Podisus maculiventris (Say) and Podisus sagitta (Fab.) were studied at six constant temperatures ranging from 19 to 35 °C. Time required for development from egg to adult ranged from 48.9 days (19 °C)
Degheele, Danny, De Clercq, Patrick
core   +1 more source

The Spatial Niche and Influencing Factors of Desert Rodents

open access: yesAnimals
Resource partitioning may allow species coexistence. Sand dunes in the typical steppe of Alxa Desert Inner Mongolia, China, consisting of desert, shrub, and grass habitats, provide an appropriate system for studies of spatial niche partitioning among ...
Xin Li   +7 more
doaj   +1 more source

Sagitta, apothem, and chord [PDF]

open access: yes, 2016
If a 55-gallon barrel lying on its side has 8 inches of grain at its deepest point, how much grain does it hold? For this and similar problems, the important keywords have non-intuitive names: sagitta, apothem, circular segment, and chord.
Pegg Jr, Ed
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Morphological variations of the three otoliths of some species of the family Loricariidae (Ostariophysi: Siluriformes)

open access: yesNeotropical Ichthyology, 2017
Otoliths are three pairs of calcareous structures found in the inner ear of bony fish. In many cases they display a species-specific morphology. The present study describes morphological variations of otoliths, namely lapillus, asteriscus and sagitta, of
Roberto Omar Sánchez   +1 more
doaj   +1 more source

The Sagitta out on the water [PDF]

open access: yes, 2015
Sepia photo of two boats out on the water.

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