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Hybridization and conservation - how are they related?

Posted by Brian on October 5, 2019 at 3:25 PM

A recent interview with The Wildlife Society was just posted on their website (see below), check it out here: https://wildlife.org/researchers-discover-hummingbird-hybrid-zone/


As is pointed out in the interview article, I'm highly suspicious this hybrid zone, although it arose naturally, is larger than it would be in the absence of human disturbance and landscape alteration. Anthropogenic disturbance and habitat modification are reshaping species distributions and bringing previously isolated species into contact. Although under-studied, the potential for disturbance to erode species boundaries has enormous implications for conservation and management, especially when declining species are involved. Migratory Allen’s and Rufous Hummingbird, species of conservation concern on the Partners in Flight Watchlist, form a hybrid zone in northern California and southern Oregon. Hybrids are successful at exploiting disturbed habitat and outnumber parental species in disturbed areas across the hybrid zone.


When two species interbreed, they exchange genes, and their resultant offspring have genomes (and traits) that resemble both parental species. If hybridization spreads too far into the range of a species with a small range, it could threaten the genetic integrity of that species if the genome of the other hybridizing parent species is expanding south as a result of gene flow. I have preliminary data that shows high levels of gene flow from Rufous Hummingbird, far into the range of migratory Allen's Hummingbird, and additional data showing migratory Allen's is undergoing a population decline (although non-migratory Allen's populations are expanding rapidly and doing just fine). Thus, hybridization might be affecting the long-term viability migratory Allen's Hummingbird in the  northern part of its range. Further, non-migratory Allen’s Hummingbird is expanding its range, likely due to urbanization and landscape alteration. I also have preliminary evidence of hybridization between non-migratory and migratory Allen's at the southern end of the breeding range of migratory Allen's, so I want to investigate whether interbreeding has recently expanded north, further into the range of migratory Allen's. This is a complicated, interesting system that I want to use to show how analyses of hybridization are relevant (and needed) when addressing certain conservation issues. I plan on looking into this in the future (possibly as part of a postdoc project!) to establish whether human-enhanced hybridization is detrimental to the genetic integrity of a (likely) declining migratory subspecies.


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2 Comments

Reply Lobnisee2
8:52 AM on October 31, 2019 
??ед??авим, в? владеле? нового ?ай?а, ко?о??й имее? п?и??н?й ?ов?еменн?й дизайн, ?добн?? навига?и? и полезн?? дл? пок?па?елей ин?о?ма?и?. ?о ?е?ви? ни к?о не по?е?ае?. Ч?о дела??? ??ли ? ва? е??? ?об??венн?й бизне? м? поможем вам ?озда?? веб ???ани??. ?е ?айна, ни одно дей??ви?ел?ное или ви???ал?ное п?едп?и??ие не може? п?одвига???? ?амо по ?ебе. ??бой л?бой компании надлежи? подде?жка в п?иоб?е?ении поп?л??но??и, а во ?и?овой комп???о?ной па??ине без нее ка?его?и?е?ки не обой?и?? из-за бе?еной конк??ен?ной бо??б?.?? занимаем?? ?аз?або?кой веб по??ала . ?? го?ов? зап???и?? полнове?н?й ин?е?не? магазин в ?е?ение п??и дней. ?добавок оказани? го?ов?? ?ай?ов, м? в?полн?ем об?л?живание по ?е?. ?оп?овождени?: ?ме??ное п?одление ?о??инга и ва?его домена, добавление наполнени? на онлайн-п?оек?, ?азме?ени? изве??ий. ?а?и ??л?ги позвол?? вам ??а?? лиде?ом на п?о??о?а? ин?е?не?а.

url=https://apistudio.ru says...
?а?к???ка ?ай?а в ев?опе
Reply ScottChacy
9:34 AM on November 10, 2019 
?оже? б???, на ?оди?ел??ком ?об?ание педагог в??азил обе?покоенно??? ?ем, ??о ? ва?его ?ебенка ?л??а???? за???днени? ? ?вн?ми ?з?ков?ми или ?е?ев?ми нав?ками. ?ли, возможно, в ?вое в?ем? об?а??? ? ?ебенком п?име?или неожиданное ?епел?во???? ?? о?м??лили ??о ??о нено?мал?но? ??ли ??о ?ак, ??о вам необ?одимо ?дела??? ??е ?еб??а ?о?ми?????? ? ?азной ?ко?о????, и дл? неко?о??? ??ан??о?ма?и? ? п?о???? ?лов к о?ли?но ??о?м?ли?ованном? и г?амма?и?е?ки п?авил?ном? п?едложени? може? понадоби???? не?кол?ко ле?,а неко?о??е п?ак?и?е?ки ??аз?( к 1 год?) на?ина?? без ?молка гово?и??. Тол?ко к 5 годам ди?? должен(на) име?? нав?к не ?ол?ко ли?? п?оизно?и?? бе??и??о??н?е п?едложени?, ?о??о??ие из дв??, ???? ?лов, однов?еменно логи?но ?ове??а?? длинн?е ??аз?. ???ледование ?ол?ко ?пе?иали??ом логопедом може? помо?? п?ове?и??, име???? ли ? мал??а за???днени? в ?е?и. Kогопеди?е?кое зан??ие - ??о помо?? дл? подавл???его бол??ин??ва ?кол?ников ? на???ени?ми ?е?и и / или ?з?ка,или заде?жки п?и?и?е?кого ?азви?и?.
?е??м возможно понадоби??? логопеди?е?ка? ?е?апи? по в?евозможн?м ?ак?о?ам, н?жно по?ла?? ва?его ?еб?нка к ?пе?иали???, когда: " ?ам ли?но либо о??ал?н?м л?д?м ??жело пон??? ?ебенка. " ??е ??и?а??, ??о ?еб?нок млад?е, нежели они, по?кол?к? он пло?о ?азгова?ивае?. " Школ?ника д?азн?? из-за ?ого ?ак?а, как он гово?и?. " Ребенок и?пол?з?е? мен??е ?лов, ?ем, нап?име?, д??гие де?и?ки его года.
???Ь??Ц? ??Ч???Я ??Щ??? ????Р????Т?? Р?Ч? поможе? ва?ем? ?ебенк? ?п?ави???? ? ??Р. Сделай?е звонок нам, п?и?оди?е на ознакоми?ел?ное зан??ие, и м? поможем мал???.

url=https://nadejda-centr.ru/ says...
??и?ел? де?ек?олог