Results 31 to 40 of about 10,216 (225)

Age composition, growth, and reproduction of koi carp (Cyprinus carpio L.) in the lower Waikato, New Zealand [PDF]

open access: yes, 2006
A total of 566 koi carp (Cyprinus carpio) from the lower Waikato region were aged from scales and opercular bones, and growth was modelled with the von Bertalanffy growth function.
Crim LW   +12 more
core   +2 more sources

Seasonal Variations in Gonadosomatic Index, Hepatosomatic Index, and Condition Factor of Metapenaeus affinis

open access: yesEgyptian Journal of Aquatic Biology and Fisheries
Samples of Metapenaeus affinis were collected from the Iraqi coastal waters between January 1 and December 1, 2021, to investigate the development of sexual maturity. Seasonal variations in gonadal function were observed in males, with peak rates (0.052) recorded in summer and the lowest rates (0.024) in winter.
Intisar Jabbar   +4 more
openaire   +2 more sources

An indirect approach to estimate spawning fraction as applied to Sardinops sagax from northern Chile

open access: yesScientia Marina, 2001
The spawning fraction of fishes with multiple spawnings and indeterminate fecundity is normally estimated through biologically intensive and time-consuming histological procedures, such as the one based on the proportion of females with post-ovulatory ...
Gabriel Claramunt, Rubén Roa
doaj   +1 more source

A case of intersex occurrence in Steindachneridion parahybae (Steindachner, 1877) (Siluriformes: Pimelodidae) under captivity condition: A cytogenetic and morphological study [PDF]

open access: yes, 2016
Poco se sabe sobre la biología reproductiva de Steindachneridion parahybae , una especie de teleósteo gonocorístico en peligro de extinción que habita la cuenca del río Paraíba do Sul y en éste trabajo se describe por primera vez la aparición de ...
Caneppele, Danilo   +4 more
core   +2 more sources

Effects of Water Temperature on Gonads Growth in Ambystoma mexicanum Axolotl Salamanders

open access: yesAnimals, 2023
The thermal environment is a major factor influencing amphibians. For example, amphibian reproduction occurs in specific temperatures, and minor changes in this aspect could have negative impacts on this biological process.
Chester R. Figiel
doaj   +1 more source

Breeding Biology of Freshwater Goby Glossogobius Giuris Using Gonadosomatic Index and Gonadal Histology

open access: yesAnnals of Bangladesh Agriculture, 2020
The breeding season of fishes plays an important role in fish domestication and conservation of fish diversity. Freshwater goby, Glossogobius giuris is an important food fish of Bangladesh. Therefore, a study was performed to determine the breeding biology through assessing the gonadosomatic index (IG), fecundity and histology of gonad of G. giuris.
S Jabbar   +6 more
openaire   +1 more source

Reproductive biology of Yellowfin Seabream Acanthopagrus latus in coastal waters of Hormozgan [PDF]

open access: yesبوم‌شناسی آبزیان, 2012
Some reproductive biology features of Yellowfin Seabream Acanthopagrusl atus including gonadosomatic index, hepatosomatic index, sex ratio, macroscopic and microscopic survey of gonad development, frequency of different maturationstages and absolute and ...
Shahlah Nikkhah Khaje Ataei   +5 more
doaj  

Estimation Of Fecundity And Gonadosomatic Index Of Terapon Jarbua From Pondicherry Coast, India

open access: yes, 2013
{"references": ["A.N. Shendge, B.A. Pawar, and U.H. Mane, \"Sex ratio of Cichlid fish Oreochromis mossambicus from Bhima river Maharashra,\" Journal of Aquatic Biology, Vol. 22, no. 2, pp. 121-124, 2007.", "G. Renuka, and U.G. Bhat, \" Fecundity of Whipfin silver biddy Gerres filamentosus (cuvier) from Sharavati estuary, central west coast of India ...
R. Nandikeswari   +2 more
openaire   +1 more source

Biological Aspects of Channa limbata (Cuvier, 1831) in Ta Bo - Huai Yai Wildlife Sanctuary, Phetchabun Province, Thailand [PDF]

open access: yes, 2017
The biological aspects of Channa limbata were studied between November 2013 and October 2014. A total of 346 fish specimens, 185 male and 161 female, were collected from Ta Bo, Huai Yai Wildlife Sanctuary, Phetchabun Province, Thailand.
Kan Khoomsab,, Suwit Wannasri,
core   +1 more source

Reproductive biology of the eyespot skate atlantoraja cyclophora (Elasmobranchii: Arhynchobatidae) an endemic species of the southwestern atlantic ocean (34ºs - 42ºS) [PDF]

open access: yes, 2018
Atlantoraja cyclophora is an endemic skate to the continental shelf of the Southwestern Atlantic Ocean (22ºS-47ºS) and a bycatch species in commercial bottom trawl fisheries. The morphometric relationships, the size at maturity and the reproductive cycle
Colonello, Jorge Horacio   +3 more
core   +3 more sources

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