Dolphin Development - Revision history

Z8600021 at 00:18, 2 Mayıs 2013

2013-05-02T00:18:11Z

← Older revision		Revision as of 10:18, 2 Mayıs 2013
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	== Introduction ==		== Introduction ==
	[[File:Dolphin_anatomy.jpg\|thumb\|Dolphin anatomy]]		[[File:Dolphin_anatomy.jpg\|thumb\|Dolphin anatomy]]

			Delphinus


	== Some Recent Findings ==		== Some Recent Findings ==
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	* Family Lipotidae		* Family Lipotidae
	* Family Pontoporiidae		* Family Pontoporiidae


			===Species===
			* Common bottlenose dolphin (''Tursiops truncatus'')
			* Indo-Pacific bottlenose dolphin (''Tursiops aduncus'')
			* Burrunan dolphin (''Tursiops australis'')

	== Development Overview ==		== Development Overview ==

S8600021: /* Articles */

2011-02-21T22:34:49Z

Articles

← Older revision		Revision as of 08:34, 22 February 2011
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	===Articles===		===Articles===
	<pubmed></pubmed>		<pubmed>20722252</pubmed>
			<pubmed>17957751</pubmed>
			<pubmed>17597550</pubmed>
			<pubmed>12845705</pubmed>
			<pubmed>4856964</pubmed>

	===Books===		===Books===

S8600021: /* References */

2011-02-21T22:31:09Z

References

← Older revision		Revision as of 08:31, 22 February 2011
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	===Reviews===		===Reviews===
	<pubmed></pubmed>		<pubmed>10882306</pubmed>


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	===Search PubMed===		===Search PubMed===

	'''Search PubMed:''' [http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=pubmed&cmd=search&term=Dolphin%20development Dolphin development] \| [http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=pubmed&cmd=search&term=cetacean%20development cetacean development]		'''Search PubMed:''' [http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=pubmed&cmd=search&term=Dolphin%20development Dolphin development] \| [http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=pubmed&cmd=search&term=cetacean%20development cetacean development]

	==External Links ==		==External Links ==

S8600021: /* Some Recent Findings */

2011-02-21T22:30:04Z

Some Recent Findings

← Older revision		Revision as of 08:30, 22 February 2011
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	\|		\|
	* '''Seasonality, estrous cycle characterization, estrus synchronization, semen cryopreservation, and artificial insemination in the Pacific white-sided dolphin (Lagenorhynchus obliquidens).''' <ref><pubmed>19494046</pubmed>\| [http://www.reproduction-online.org/cgi/content/full/138/2/391 Reproduction]</ref> "Ovulations and conceptions occurred from August to October. Peak mean serum testosterone, cross-sectional testicular area , and sperm concentration occurred in July, August, and September respectively. Spermatozoa were only found in ejaculates from July to October. Estrous cycles were 31 d long and were comprised of a 10 d follicular and 21 d luteal phase. Ovulation occurred 31.2 h after the onset of the LH surge and 19.3 h after the LH peak."		* '''Seasonality, estrous cycle characterization, estrus synchronization, semen cryopreservation, and artificial insemination in the Pacific white-sided dolphin (Lagenorhynchus obliquidens).''' <ref><pubmed>19494046</pubmed>\| [http://www.reproduction-online.org/cgi/content/full/138/2/391 Reproduction]</ref> "Ovulations and conceptions occurred from August to October. Peak mean serum testosterone, cross-sectional testicular area , and sperm concentration occurred in July, August, and September respectively. Spermatozoa were only found in ejaculates from July to October. Estrous cycles were 31 d long and were comprised of a 10 d follicular and 21 d luteal phase. Ovulation occurred 31.2 h after the onset of the LH surge and 19.3 h after the LH peak."
			* '''True hermaphroditism: first evidence of an ovotestis in a cetacean species'''<ref><pubmed>20708743</pubmed></ref> "An immature unilateral hermaphrodite common dolphin (Delphinus delphis) was found stranded on the southwest coast of the UK. The external phenotype was that of a female, but internally there was one ovotestis, containing both ovarian follicles and testicular tubular elements, and a contralateral ovary. Ovarian portions of the ovotestis appeared normal and demonstrated follicular development, whereas the testicular tissue exhibited hypoplasia and degeneration."
	\|}		\|}

S8600021: /* Taxon */

2011-02-21T16:24:31Z

Taxon

← Older revision		Revision as of 02:24, 22 February 2011
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	== Taxon ==		== Taxon ==
			Suborder Odontoceti, toothed whales
			* Family Delphinidae, oceanic dolphins
			* Family Platanistidae
			* Family Iniidae
			* Family Lipotidae
			* Family Pontoporiidae

	== Development Overview ==		== Development Overview ==

S8600021: /* Introduction */

2011-02-21T16:22:19Z

Introduction

← Older revision		Revision as of 02:22, 22 February 2011
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	== Introduction ==		== Introduction ==
			[[File:Dolphin_anatomy.jpg\|thumb\|Dolphin anatomy]]

	== Some Recent Findings ==		== Some Recent Findings ==

S8600021: /* External Links */

2011-02-21T16:14:19Z

External Links

← Older revision		Revision as of 02:14, 22 February 2011
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	{{Template:External Links}}		{{Template:External Links}}

			* Carnegie Stage 11 CRL: 4.7 mm [http://www.neoucom.edu/DLDD/Embryo/cs_11/94674/index.html Spotted Dolphin Embryo LACM 94674] \| [http://www.neoucom.edu/DLDD/Embryo/cs_11/94674/section_index.html Section Index]
			* [http://dmc.ohiolink.edu/cgi/i/image/image-idx?sort=dolphin_ti;q1=dolphin;type=boolean;rgn1=ic_all;med=1;view=thumbnail;c=dolphin OhioLINK - Dolphin Embryo Digitized Slides]

	{{Template:Animals}}		{{Template:Animals}}

S8600021: /* Some Recent Findings */

2011-02-21T16:03:17Z

Some Recent Findings

← Older revision		Revision as of 02:03, 22 February 2011
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	\|-bgcolor="F5FAFF"		\|-bgcolor="F5FAFF"
	\|		\|
	* '''Seasonality, estrous cycle characterization, estrus synchronization, semen cryopreservation, and artificial insemination in the Pacific white-sided dolphin (Lagenorhynchus obliquidens).''' <ref><pubmed>19494046</pubmed></ref> "Ovulations and conceptions occurred from August to October. Peak mean serum testosterone, cross-sectional testicular area , and sperm concentration occurred in July, August, and September respectively. Spermatozoa were only found in ejaculates from July to October. Estrous cycles were 31 d long and were comprised of a 10 d follicular and 21 d luteal phase. Ovulation occurred 31.2 h after the onset of the LH surge and 19.3 h after the LH peak."		* '''Seasonality, estrous cycle characterization, estrus synchronization, semen cryopreservation, and artificial insemination in the Pacific white-sided dolphin (Lagenorhynchus obliquidens).''' <ref><pubmed>19494046</pubmed>\| [http://www.reproduction-online.org/cgi/content/full/138/2/391 Reproduction]</ref> "Ovulations and conceptions occurred from August to October. Peak mean serum testosterone, cross-sectional testicular area , and sperm concentration occurred in July, August, and September respectively. Spermatozoa were only found in ejaculates from July to October. Estrous cycles were 31 d long and were comprised of a 10 d follicular and 21 d luteal phase. Ovulation occurred 31.2 h after the onset of the LH surge and 19.3 h after the LH peak."
	\|}		\|}

S8600021: /* Some Recent Findings */

2011-02-21T16:02:14Z

Some Recent Findings

← Older revision		Revision as of 02:02, 22 February 2011
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	== Some Recent Findings ==		== Some Recent Findings ==

	* '''~~Hibernation~~ and ~~reproduction overlap~~ in the ~~echidna~~.''' <ref><pubmed>~~19562080~~</pubmed></ref> "~~During hibernation there is~~ a ~~slowing~~ of ~~all metabolic~~		{\|
			\|-bgcolor="F5FAFF"
			\|
			* '''Seasonality, estrous cycle characterization, estrus synchronization, semen cryopreservation, and artificial insemination in the Pacific white-sided dolphin (Lagenorhynchus obliquidens).''' <ref><pubmed>19494046</pubmed></ref> "Ovulations and conceptions occurred from August to October. Peak mean serum testosterone, cross-sectional testicular area , and sperm concentration occurred in July, August, and September respectively. Spermatozoa were only found in ejaculates from July to October. Estrous cycles were 31 d long and were comprised of a 10 d follicular and 21 d luteal phase. Ovulation occurred 31.2 h after the onset of the LH surge and 19.3 h after the LH peak."
			\|}

	== Taxon ==		== Taxon ==

S8600021: /* Limb Development */

2011-02-21T15:56:23Z

Limb Development

← Older revision		Revision as of 01:56, 22 February 2011
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	==Limb Development==		==Limb Development==
	[[Dolphin_limb_development_01.jpg\|thumb\|Hind-limb loss in embryos of the dolphin.<ref name="PMID16717186"><pubmed>16717186</pubmed>\| [http://www.pnas.org/content/103/22/8414.long PNAS]</ref>]]		[[File:Dolphin_limb_development_01.jpg\|thumb\|Hind-limb loss in embryos of the dolphin.<ref name="PMID16717186"><pubmed>16717186</pubmed>\| [http://www.pnas.org/content/103/22/8414.long PNAS]</ref>]]
	Researchers have identified that Sonic hedgehog (Shh), that in limb development is the signaling activity of the zone of polarizing activity (ZPA), is absent from the dolphin hind-limb bud.<ref name="PMID16717186"><pubmed>16717186</pubmed>\| [http://www.pnas.org/content/103/22/8414.long PNAS]</ref> The hind-limb bud initiates, but then bud arrests and degenerates around the fifth gestational week.		Researchers have identified that Sonic hedgehog (Shh), that in limb development is the signaling activity of the zone of polarizing activity (ZPA), is absent from the dolphin hind-limb bud. An absence of Hand2, an upstream regulator of Shh, leads to the failure to establish a ZPA.<ref name="PMID16717186"><pubmed>16717186</pubmed>\| [http://www.pnas.org/content/103/22/8414.long PNAS]</ref> The hind-limb bud initiates, but then bud arrests and degenerates around the fifth gestational week.

	[[File:Dolphin limb development 02.jpg\|600px]]		[[File:Dolphin limb development 02.jpg\|600px]]

			:'''Links:''' [[Musculoskeletal_System_-_Limb_Development\|Limb Development]] \| [[Developmental_Signals_-_Sonic_hedgehog\|Sonic hedgehog]]

	== References ==		== References ==